Animal Behaviour Flashcards
(364 cards)
1
Q
What is the definition of behaviour
A
The internally coordinated responses (actions or inactions) of whole living organism (individuals or groups) to internal and/or external stimuli, excluding responses more easily understood as developmental changes (Levitis et al. 2009)
2
Q
Why is understanding animal behaviour important?
A
- Aquaculture: post-release mortality - lack of skills to survive such as migration, foraging, avoiding predators
- Resolving human-wildlife conflict - Mozambique elephants habitat reducing due to increased farm land
- Conservation
- Neuroscience - bird song
- public engagement - public recognising importance of nature
3
Q
What are the 2 ways of studying animal behaviour?
A
- Question
Question > What are the benefits of hunting in groups? > Then choose a system - System
system > field observation > What is your question?
some people invest in a system i.e. buying a boat
4
Q
What is an ethogram?
A
A comprehensive list, inventory or description of all the behaviours an organism carries out
5
Q
What kind of data will ethograms record?
A
- Events - Aggression, vocalisation, yawning, sneezing
- States - Foraging, movement, singing, mating display
6
Q
What is an Event?
A
Behaviours of short duration generally counted and not timed
7
Q
What is a State?
A
Behaviours that occur for an extended duration
8
Q
What must be taken into account when collecting data?
A
- how easy is it to observe
- your specific question
- how you plan to statistically analyse your data
- Constraints e.g. person-power
9
Q
What are the 5 methods of sampling?
A
I Ad Libitum
II Focal animal
III All occurrences
IV Binary
V Scan sampling
10
Q
What is sampling I - Ad Libitum
A
Researcher records individual or group behaviours, with little or no reference to specifics, well‑defined methods
11
Q
What is sampling II - Focal animal
A
Observations of one focal individual. Record either:
all behaviours of individual
all occurrences of specific behaviour/s of interest exhibited during a set period of time
12
Q
What is sampling III - All occurrences
A
Select one or more specific behavioural events and record every occurrence within the animal group (e.g. every occurrence of grooming, chasing, etc…)
13
Q
What is sampling IV - Binary
A
Records whether specific behaviours did (1) or did not (0) occur during observation of individual or group, during a set time period.
14
Q
What is sampling V - Scan sampling
A
Records instantaneous activity or behavioural state of all animals in the group at predetermined time intervals
15
Q
What 3 types of information do we measure?
A
Latency
Frequency
Duration
16
Q
As animal behaviour is very hypothesis-driven it is key to…..
A
- Don’t forget controls
- Replication is critical
- Independence of data
- Robustly test alternate hypotheses
Tinbergen’s framework
17
Q
What is Anthropomorphism?
A
applying human qualities (emotions/intentions) to non-human animals or things
18
Q
What framework is key to understanding animal behaviour?
A
Tinbergen’s framework
19
Q
How can Tinbergen’s framework be broken down?
A
- Mechanism - underlying causation
- Function - impact on fitness
- Phylogeny - evolutionary history of species
- Ontogeny - Developmental history of individual
20
Q
How is Tinbergen’s framework grouped?
A
Proximate - how it works (Mechanism and Ontogeny)
Ultimate - why the behaviour exists ( Function and Phylogeny)
Or is also grouped as
Current - Mechanism and function
Historical - Ontogeny and phylogeny
21
Q
What is the time it takes to eat and kill and animal called?
A
Handling time
22
Q
What are the assumptions for the developing foraging theory?
A
- They will have an animal in front of them and they think do I take this or move on
- Animals are trying to maximise the rate at which they intake resources
- If the animal has the better food item it will always take that
23
Q
What are the factors that the Krebs inequality equation takes into account?
A
T = time spent searching for food (s)
λ = encounter rate for food type (items/s)
r = reward rate for food (J)
h = handling time for food (s/item)
24
Q
What is the Krebs inequality equation>
A
Sorry im cheap and dont want to buy the pro version, look in your notes lecture 2
25
What are 2 things to consider when applying krebs theory to biology?
1. Whether an item is eaten depends on how common it
2. Poorer items should be included in the diet only if better items are rare
26
What is the great tit experiment?
In lab experiment set up with conveyor belt with food going past of different caloric (larger/smaller) gain.
Speed and size were variable - bird had to fly down from perch and grab food of conveyor belt and return (output).
Big prey if common took only big pieces, if big pieces are rare it took both small and big
27
What were the results of the great tit experiment?
1. when big prey was common, birds took only big prey
2. when big prey was rare, birds took both big and small prey
3. The predictions were qualitatively correct (the birds knew went to switch)
28
When animal forage what is important to remember?
Variability matters - better to play less risky strategy if they are getting consistent food sources - birds with food dispensers giving variable amounts of food
Danger matters - fish in the lake half with predators half without causes a trade in foraging strategy prey will trade worse food source for less predation
Learning matters - depending on how they learnt to specialise will lead to their preferred feeding strategy - results in handling times to change
29
What do the right and left side of the krebs predation equation mean? (Check notes in either lectures 2/3 for equation)
Left is the food infront of you and the gain from eating it
Right is the rate of energy you gain/lose if you ignore it and went to look for a better food source
30
What is absolute fitness?
(W) The expected number of offspring that an individual will produce over the course of its lifetime
31
What does absolute fitness depend on?
Viability - need to live to be a certain age (sexual maturity) and longer living normally means more opportunities to reproduce
Reproductive success - dependent on species and sexes, males can theoretically produce a near infinite number of gametes compared with females who are much more limited
32
What is relative fitness?
Absolute fitness divided by the group or population fitness
33
What does relative fitness show if its greater than 1?
the population/population phenotype increases
34
What are the 4 main fitness interactions between 2 animals?
Mutualism - +/+
Competition - -/-
Commensalism - +/0
Predation -/+
35
What is mutualism
Both organisms gain from interaction
Bees and flowers
36
What is Competition
Both organisms lose from the interaction
Lions and hyenas
Aphids and nematodes (indirect)
37
What is Commensalism
Has a positive effectt on one organism and none on the other
Barnacles on whales
May not be 100% real
38
What is predation
Has a positive effect on 1 organism and a negative on the other
Seal and shark
39
What is Crypsis and an example of it
the ability of an animal or a plant to avoid observation or detection by other animals
Peppered moth in the industrial revolution to reduce predation from birds
40
What was the impact of the clean air act of 1956
de-industrialisation caused the environment to change for peppered moths resulting another phenotypic change
41
Other than environmental what other components can crypsis include?
Behavioural - Orientation that moths resting during the day effected their survival rates
42
Define Masquerade?
Organism attempt to be mistaken for non-prey (exploits predators cognitive limitations)
Papilo cresphonetes - looks like bird shit
43
What is an example of a behavioural component in Masquerade
Cuttlefish change colour and shape (even of non natural items like a plastic tree)
44
What is aposematism
The animal advertising to potential predators that it is not worth attacking or eating (normally bright colours)
45
What a negative effect for animals that display aposematism
It can be costly
e.g. Monarch butterflies which are poisonous that eating the toxic chemicals from milkweed makes them grow more slowly
46
What factor can effect aposematism
Population density
Grasshopper's display bright colours if raised in high density to warn predators
those raised in low density are green as the bright colours would make them stand out
47
What model does aposematism lead to
Mimicry
48
State 2 types of mimicry?
Batesian - An animal is trying to look like another toxic animal (corn snake vs coral snake)
Mullerian - Trying to look like each other as they can all benefit (wasps, bees, hornets)
49
Describe Crypsis, masquerade and mimicry as well as stating the predator system each exploit
Crypsis - prey avoids notice - sensory
Masquaerade - prey is misidentified - cognitive
Mimicry - prey is misidentified - cognitive
50
What does Mono and poly mean
Mono = one
Poly = many
51
What does gamy, gyny and andry mean?
Gamy = sexual union
Gyny = female
Andry = male
52
What is monogamy
1F + 1M
53
What is Polygyny
>1F + 1M
54
What is Polyandry
1F + >1M
55
What is Promiscuity
ORGY TIMEEEE!
>1F + >1M
56
Which mating system do males have disproportionate reproductive success?
Polygyny
57
What factors shape mating systems?
1. Differential investment between the sexes
2. Ecological factors
3. Certainty of paternity
4. Dependence of young and impact of care
58
How does differential investment between the sexes impact the shaping of mating systems?
As males gametes are easier to make males limitations is the number of females he can mate with
females invest more into their gamete so it's not advantageous to have as many partners as possible
Male = Quantity
Female = Quality
Leads to polygyny >1F + 1M
59
Which sex is polyandry better for?
Females
- a higher rate of impregnation
- uncertainty of child's father therefore less infanticide
- more paternal parental care
males almost always do worse in this system - only beneficial in negative environments
60
In what environment is monogamy the better mating system?
Poor quality environments
61
How do ecological factors affect mating systems?
If the population is spread out males choose monogamy as it's to costly to find multiple females
If the population is clumped (due to high predation risk) it makes males polygynous
mating strategies depend on how dispersed the females are
62
How does certainty of paternity affect mating systems?
Males certain of paternity > monogamy
Males uncertain of paternity > polygyny
is a key driver for monogamy - if the males need to guard the female as she is on the heat for a long time or if he needs to give parental care - results in monogamy
63
How does dependence of young and impact of care shape mating systems
The degree of that parental care influences reproductive success influences whether it is better to have one mate or multiple mates
high degree = more monogamous
Also depends on certainty of paternity
64
What are the consequences of mating systems?
Secondary sexual characteristics
Intrasexual competition - males compete for females via displays or combat
Weaponised males - Antlers canines
Sexual dimorphism - Biggest strongest males
Intersexual - females pick a male to mate with
Exaggerated traits - Peacocks tail
65
Name the 4 types of polygyny
- Female defence polygyny - males defend access to females
- Resource defence polygyny - males compete over resources that females choose for
- Scramble competition polygyny - males roam around trying to find available females
- Lek polygyny - wingman-ship
66
Give an example for the 4 types of polygyny
- Female defence - F zebras are tied to each other and males compete for access to get into the group
- Resource defence - Females cichlids (fish) lay eggs in empty snail shells males collect and defend big hoards of these shells
- Scramble competition - F squirrels are widely dispersed so M squirrels move around alot during mating season but return to their home range after
- Lek - subordinate song birds in the tropical rainforest perform a backup song/dance for dominant males to attract females
67
What are the 3 hypothesis for lek formation
Hotspot hypothesis
Hotshot hypothesis
Female preference hypothesis
68
What is the hotspot hypothesis
Males cluster around where females commonly pass or resources
69
What is the hotshot hypothesis
Subordinate males gather around attractive dominant males
70
What is the females preference hypothesis
Females go "shopping" for leks, but are more likely to shop in the large leks - so its advantageous to go for the largest leks
71
Evidence for hotspot hypothesis?
Multiple species of bird in costa rica use the same location to Lek - showing a specific place increases chances of reproduction
- flyways
72
Evidence for hotshot hypothesis
In european sandpiper the removal of the dominant male from the lek caused the subordinates to disperse
whilst removing the subordinate did nothing
73
What are the 3 hypothesis for monogamy?
- Mate guarding hypothesis
- Mate assistance hypothesis
- Female-enforced monogamy hypothesis
74
What is the mate-guarding hypothesis
Monogamy is adaptive (produces more offspring) when a female is left another male may come to reproduce so the initial male stays defending his mate- clown shrimp
75
What is the mate assistance hypothesis?
Monogamy is adaptive when parental care can greatly increase offspring survival - often in altricial species - Californian mouse
76
What is the female enforced monogamy hypothesis?
Males are not monogamous because it is in their best interest, but the females impose monogamy on them and males stay as it is unlikely they will find another mate - burying beetles
77
Why are most birds socially monogamous
1. mate guarding
2. rearing altricial offspring
3. eggs mean both parents can provide care
trick with social monogamy is genetic evidence suggest they under go promiscuous mating
78
Why live in groups?
Resources
- Communal roosting
- Cooperative hunting
- Aggregated resources
Predation
- Reduced investment in vigilance
- Dilution - less chance of being a prey 1/100 v 1/1
- Confusion - fish schooling
- Communal defence - crows mobbing a raptor
79
What is the effect of group living on competition?
It increases competition both within and between groups
80
What group size tends to have the highest fitness?
intermediate group size - bit like a bell curve
81
What determines social relationships between groups?
Resource competition leading to conflict
82
What are the 2 types of competition hypothesis?
Contest competition - slanted line graph
Scramble competition - horizontal line graph
83
Explain the impact of contest competition between animals in big and small groups
If you are a dominant animal in a large group in a patchy environment, you will have a higher fitness than animals in small groups with a high rank, but if you are a low ranking animal in a big group you are likely to have lower fitness than the high ranking individuals in medium groups
84
Explain a scenario where scrambled competition can be observed
A primate that eats only leaves have abundant food sources and it is not worth alot effort to fight over food, the leaves are pretty much evenly dispersed across the environment (howler monkeys)
Large groups do a bit worse, as they eat through the resources faster, small groups have a higher intake rate as they deplete their resources less quickly, but there is no difference between foraging rates in animals within a group, (little dominance hierarchy), little variance in reproductive success in either sized groups
85
What is the impact of social relationships on hormones
If you are lower in the hierarchy then you had lower health in terms of stress levels and CV system - resulting in higher stress levels and slower wound healing
86
In the contest competition which animal has the highest stress levels
The most dominant male as everyone is trying to take there spot
87
What hormones are responsible for social stress?
Adrenaline
Corticosterone
88
What are coping mechanisms to reduce aggression
Intervention - 2nd and 3rd male confront the dominant male
Reconciliation - victim of big fight attempts to reconcile with the winner via grooming
89
In egalitarian societies (scrambled competition) what is how do the stress levels vary amongst members?
High and Low ranking members have high levels
whilst Medium ranking members have the lowest
90
What is the impact of having friends within your social group
that strong social bond animals have
- more offspring
- and the offspring tend to be healthier,
- and inherit the social ties of the family,
- tend to then have higher fitness
In wild horses that experienced positive interactions (grooming etc) had more fowls
In baboons it resulted in an increased chance of reaching old age
91
Impact of social relationships on reproductive suppression of hormones
Dominance leads to reproduction suppression via hormonal changes
GC's levels are higher in subordinate members, whilst all the reproductive hormones are higher in dominant/breeding members. showing that breeders are suppressing the subordinates ability to reproduce
92
Name 2 animals that exhibit menopause like behaviour other than humans
Killer whales
Elephants
93
Why do some animals exhibit menopausal symptoms?
This is due to the older female members by providing additional fitness advantages by having ecological knowledge such as remembering where good foraging spots are (killer whales) or predator knowledge - how the herd should respond to male vs females lion attacks (elephants)
94
Definition of sleep
Behaviourally as a normal absence of consciousness
95
What is decreased neuronal activity linked to?
transitioning from a wake state to a sleep state
96
What is the relationship between sleep bout duration and organism size
Small organism - shorter bouts of wake/sleep
Bigger - tends to be longer
97
Why do smaller animals have smaller bouts of sleep/wake
There is a metabolic burden of being awake where it builds up and reaches the critical level that requires sleep
- smaller animals has a smaller brain and therefore has a smaller critical level so needs to sleep more often
- May be due to smaller animals being prey, so cannot sleep for long durations to reduce chance of predation
98
What ecological factors influence sleep and do they promote or suppress sleep?
P = promotes S = suppress
Protection against predation S
Enhancing mating success S
Incompatibility with swimming S - causes animals to sleep with only half their brain
Thermoregulation S
Need for food (foraging) S
Adaptive Inactivity P
99
What intrinsic factors influence sleep and do they promote or suppress sleep?
Enhancement of memory consolidation P
Compensation for NREM P
Activity-dependant rewiring of CNS P
Energy conservation P
Metabolic clearance P
Tuning sensory functions P
Synaptic homeostasis P
100
How do we measure sleep?
Electroencephalogram (EEG)
101
Benefits of EEG?
Is cheap and non invasive
102
what are the stages for sleep
Alpha - eyes shut
Beta - thinking hard
Theta - drowsiness
Spindle Oscillations
Delta
Lower frequency delta
REM
103
What are the 2 opposing factors controlling timing and amount of sleep?
Homeostatic sleep pressure
Internal circadian clock
104
What are the the neural systems actively controlling sleep?
Forebrain system that independently support SWS
Brainstem systems that - activates the forebrain into waking
Brainstem systems that - triggers REM sleep
105
What does Orexin do in the sleep cycle
It is produced in the lateral hypothalamus
it promotes waking/being awake
106
What is Unihemispheric sleep?
Where half the brain sleeps at a time
a.k.a. Unihemispheric slow-wave-sleep (USWS)
107
Why do some animals do Unihemispheric sleep?
High predation risk
continuous movement - dolphins
navigation
108
How do Frigate birds sleep?
They stay in thermals flying up and then fly straight back down so they can sleep without landing in the sea
with sleep only occurring whilst they ascend
109
How can Frigate birds sleep in thermals
They tilt their heads the direction they are turning to always remain in the thermal
110
What are the 4 factors associated with sleep in animals of simpler nervous systems?
1) a period of quiescence associated with a species specific posture
2) an increased arousal threshold (reduced responsiveness to external stimuli)
3) Quick reversibility to wakefulness
4) Homeostasis
111
What are the impacts of sleep debt on honey bees
Impaired learning and memory
Waggle-dance precision reduced
Impaired navigational memory
112
How do organisms adapt to earths cyclical changes
Retroactively
- Homeostatic mechanisms
-- Exposed to a condition and we respond to that
-- Keep things as a set point
-- Vasoconstriction to keep the body temperature constant, then shivering if prolonged exposure
Proactively
- biological timekeepers
-- if we can predict the cycle than we can change our behaviour to overcome a change
113
What environmental conditions do earths 24hr/1year rotations cause
24 hr
- light
- temp
- UV rays
- predation
1 year - all of the above
- Food availability
114
What processes are controlled by circadian rhythms
body temp
hormone secretion
locomotor activity
sleep
alertness
muscle strength
immune function
115
How can we measure the circadian rhythms of rodents in a lab
Use a running wheel to monitor voluntary activities
116
How does the circadian rhythm of rodents change in constant dark
there is a drift as the circadian rhythm is more than 24hrs
117
How does the circadian rhythm of rodents change in a light and dark cycle
It drifts until its circadian rhythm is aligned with light and dark cycle
118
What is the benefit of having a internal clock
allows us to predict changes in the environment
e.g. body temp with light and dark cycle high in the day and low at night
119
Why are pacemakers important in the schematic model of circadian rhythms?
because they communicate with downstream regions that effect behaviour (effector) and mechanism of measuring a variable (receptor)
120
What is the main mammalian circadian clock
The Suprachiasmatic Nuclei (SCN)
121
When is the SCN active?
Day = Active
Night = Inactive
122
Where does the SCN receive light information from?
the retina
123
Describe the importance of the SCN receiving light from the retina
It allows the synchronisation of local cellular clocks to provide coordinated information about time-of-day
124
How does the SCN receive light from the eyes?
via Retinohypothalamic Tract RHT
125
What is the primary process that SCN controls
The regulation of melatonin release from the pineal gland
126
What is the impact of light on melatonin release
Melatonin is released at night therefore light rapidly suppresses melatonin release
127
What is the type of pathway between the SCN-pineal gland
multi-synaptic pathway
128
Do nocturnal animals release melatonin?
Yes but they interact with it differently to us
129
What impact does the removal of the SCN have on wild chipmunks
As they had a lack of internal clock it caused those with lesioned scn's to have considerably higher mortality rates than the control groups
130
What is key to consider when looking at internal clocks and fitness
If the internal clock and the environment are synced the animal will have higher fitness. the more out of sync the lower the fitness
131
What is a Ultradian rythm
Biological rhythm with a period of <24hrs
- Human sleep cycle, 80 to 90 mins
- Growth hormones often have a circadian rhythm with a smaller rhyme imposed on them
132
What is a infradian rhythm
Long period rhythm
- bird migration
- hibernation
- reproductive cycles
133
Name a type of external stimuli that enables marine animals to gauge timing
Tidal - circa tidal rhythms however apparently are nothing to do with circadian rhythm
134
What is a circannual rhythm?
a rhythm once a year
an example is a sheep
- bigger testes and longer coats in winter
- opposite in the summer
135
Evolutionary change will act provided organisms exhibit what 3 factors?
Genetic variation
Heredity
Differential reproduction
in order for phenotypes to evolve, there must be variation, inheritance, and differential reproduction
136
What is Occasm's razor/law and who came up with it
"In no case is an animal activity to be interpreted in terms of higher psychological processes, if it can be fairly interpreted in terms of processes which stand lower in the scale of psychological evolution and development" by Lloyd Morgan's Canon
137
What study of behaviour developed in europe
Ethology - the scientific and objective study of animal behaviour under natural conditions (study in situ)
138
What study of behaviour developed in America?
Behaviourism - focusing on physiology and comparative, lab-based psychology
139
What is behaviourism based on?
The influence of external stimuli on behaviour
Observable and quantifiable stimuli and response
Mind unnecessary
140
What are the 2 key puzzles linked with behaviourism
Skinners box - rat with electric grid on the floor and food dispenser
Thordikes puzzle box - cat with a bit of string to open the box door
141
explain the differences between behaviourism and ethology
Behaviourism is problem-oriented (cause and effect relationship) operant conditioning
Ethology is innate behaviour under natural conditions
142
What debate did the 2 separate methods of studying behaviour cause
Nature vs nurture
Nature - ethology
Nurture - behaviourism
143
Describe Nature?
Genetic constraints
instinctive
pre-programmes
innate
FIXED ACTION
144
Describe nurture
reinforcement
learning from experience and environment
145
Examples of where nature was proven
Tinbergen's seagull eggs - found it did not matter if it was an egg, could do with a lightbulb and the bird would do the same response
David lack's robins - found that robins attack each other due to the colour of red rather than the bird - was shown using a red clothe
146
What can't be studied in behaviourism?
Questions that are immeasurable
e.g. the mind and internal states
147
As the nature vs nurture debate is outdated how should we see behaviour?
As a continuum
one end "more genetic" and the other being "more environmental"
a classic example is birdsong
148
Why can Twin studies and Adoption help us work out where on the continuum the behaviour sits
Twin studies
- same genes
- same/different environments
Adoption
- Different genes
- same environment
149
What should be avoided when studying sexual selection
Just-so stories
150
How can sexual selection be broken down
Pre-copulatory - before
- Intra-sexual selection = same-sex competition
- Inter-sexual selection = mate choice
Post-copulatory - after
- Sperm competition = same-sex competition
- Cryptic female choice = mate choice
151
After how many mates do females' fitness plateau and why
1 and because they are constrained by egg production
152
What is the trend with males when comparing fitness with the number of mates
The more mates a male has the higher fitness - as more offspring
153
How does gamete investment differ between the sexes
Females - high investment as eggs are larger than sperm
Males - low as sperm is cheap to produce and can produce many at one times
154
How does gamete investment differ between the sex's
Female - high investment as egg costs more to produce
Males - low investment as can produce many sperm which is cheap
155
What do males and females invest in when looking at mate selection?
Males - quantity
Females - quality
156
What are the 2 tactics males use to win over a mate
Out-compete rivals - intra-sexual selection
Be more attractive - inter-sexual selection
157
Case study for intrasexual selection?
Elephant seals fighting for social dominance
158
What are the effects of intrasexual selection on elephant seal populations?
Sexual dimorphism
evolution of weaponry in males
The minority of males responsible for the majority of offspring
female reproductive success is much less variable
159
What is the cost of weaponry
Developmental cost - reduction in foraging ability due to eye size - Horn battles
Increase reproductive success but reduced survival - Soay sheep
160
What type of pre-copulatory selection is females' choice?
Intersexual selection
161
What are typical behaviours males exhibit to females during intersexual selection
Courtship displays
Elaborate architecture - nest etc
162
What are the direct benefits a female can receive in intersexual selection?
Oral/Nuptial gifts - nutrients to consume - shrike capture prey and incorporate them into their bush, give them to the female
Seminal gifts - protein-rich ejaculate to nourish female e.g. cum gobbling bush crickets
163
What are the hypothesis for the evolution of female choice
male traits indicate "good genes"
Sexy son hypothesis - females choose males based on producing offspring with the best chance of reproducing-Does not explain why one trait is under selection
Zahavi's handicap principle - females choose males because he was able to survive with a costly sexual trait (assumes sexual signals are costly – ‘honest signals’)
164
What is runaway sexual selection?
(birds with really long tails)
- male traits originally indicate survival advantage; genes arise that enable females to detect and choose that trait
- leads to runaway sexual selection, where females prefer longer tails despite fitness cost
165
What factor affects animals population dynamics that can rapidly reproduce like lemmings
Carrying capacity
predator aggregation
166
In Holts 1985 population growth/population size graph (The one that looks like a n with a line underneath it) Describe the meaning of the graph
As the population gets bigger there are more individuals reproducing so the population growth rate increases
However, if it increases too much resource competition causes population size to plateau and then decrease
167
What are the red dots/where the curve crosses the straight line called and what do they represent?
They are called equilibrium and on the normal graph there are 2, first the equilibrium at zero is called a unstable equilibrium and the second is called a stable equilibrium as a population will always return to it
168
What is the graph called where the curves goes below the line before above the line
Allee graph
169
What can an allee graph be used to show and what do the 3 equilibriums represent?
It can be used to show small populations struggle to survive, the first and last equilibrium is stable whilst the second is unstable - I know these few flashcards are a bit shit but I don't wanna give my hard-earned money's to Brainscape so use ur notes with these flashcards
170
What factors make dispersal costly?
- the energetic cost of moving
- investment in dispersal physiology
- predation
- failure to find a new habitat
171
When does temporal variability favour dispersal?
If the carrying capacity of a habitat changes then it could be beneficial to disperse because it affects the population size
172
What factor characterises a metapopulation
Its connectivity
173
What is the relation between connectivity and the dispersal propensity of individuals in the patch between old and new populations?
Highly connected patches have little difference in dispersal propensity
In low connectivity, new populations are better dispersal propensity than individuals in old populations
174
What is the effect of new invasions on dispersal?
It increases the dispersal - cane toads in Australia
175
What happened to the morphology of cane toads after a while
The leg length of toads increases meaning they could move further
176
What is cannibalism a good sign of?
The environment is getting worse
177
Why is it beneficial if an animal can anticipate their environment
Because they often disperse before it becomes uninhabitable
178
Animals can use dispersal to avoid.....
inbreeding
179
If animals have siblings are they more or less likely to disperse?
More to avoid inbreeding
180
What is anisogamy?
the idea that the gametes of males and females are different
181
What form of dispersal does anisogamy favour
Sex-dependant dispersal
182
Why does anisogamy favour sex-dependent dispersal?
because it is easier to survive and rear offspring in a familiar environment however IT IS HARDER TO FIND UNRELATED MATES
183
What are the benefit and costs for the individuals either dispersing or in the local habitat?
dispersed females - benefit as can find an unrelated mate but the cost is being in an unknown environment
Dispersed male - has many new mates but the unknown environment
Local male - males dispersing into their habitat is negative as their potential mates decrease and higher competition
184
Where do the fall armyworm moths migrate from the beginning to the end of summer?
Make their way up the USA starting in Texas/Florida in early June to Minnesota in late August and then move back to Texas in winter
185
Which animals intercept the moths and eat them
A colony of up to 40 million bats from Bracken Cave full of maternal mothers with high metabolic rates
186
What is the habitat for these bats
Mainly caves however human intervention has caused them to also live under bridges - do not live in trees
187
What is the impact on juveniles of living under bridges compared to caves
Bridge juveniles have higher body mass and length of fore arm as well as growing faster than those in caves
188
What is the cost for bats to live in a cave
Competition
Parasitism
189
What factor promotes living in groups?
The ability to collect social information
190
If the environment is uneven but stable should animals copy or not?
Best to copy
191
If the environment is even should animals copy or not?
It is not very beneficial to copy
192
If the patches are variable should an animal copy or not?
Better to not copy
193
How do temporal and spatial variability affect whether an individual should copy
Temporal - makes it worse
Spatial - males it better
194
Give examples of how grouping together to avoid predation
Selfish herd theory (snake and frogs)
Predator satiation (locusts all coming out of the ground at once)
Reduced vigilance (gazelles in herds spend less time looking around)
Predator confusion (fish schooling)
195
Does the selfish herd theory increase or decrease the chance of predation
It decreases overall whilst some members still have a high chance
196
Give evidence for the selfish herd theory
Redshanks - prey sparrow hawks - predation
Redshanks flying in groups found that those birds that where more densely grouped where less likely to be predated
197
Give evidence for the selfish herd theory
Redshanks - prey sparrow hawks - predation
Redshanks flying in groups found that those birds that were more densely grouped were less likely to be predated
198
Give evidence for predator satiation
Locust nymphs stay in the ground for 17 years and all emerge at the same time, creating a high density of defenceless nymphs. This study found more nymphs doesn't mean more birds and so more nymphs survive leaving the ground.
199
Give evidence for reduced vigilance
Gazelles in big groups spend less time looking around due to more members and can spend more time foraging
200
Give evidence for predator confusion
Schooling fish to confuse a shark
201
How many species of songbird are there?
~4000
202
remember most birds can vocalize, not all birds can sing
8===D
203
What is a call?
usually a short and simple vocalization that signals flight or danger and is produced throughout the year
204
What is a song?
tends to be a long and complex vocalization produced during a breeding season
205
What is repertoire?
When individual birds can sing more than one version of a song type
206
Name 4 model species for our birdsong info?
Chaffinch
White-crowned sparrow
Zebra finch
Canary
207
How can we measure song structure, how is it broken down?
using sonogram
notes/elements (continuous mark on the sonogram
== Simple continuous narrow frequency band
== Complex frequency and amplitude
- Syllables (composed of two or more notes clustered together)
- Phrase (two or more syllables grouped together)
== Could also be series of single notes/syllables
- Syntax (specific timing and ordering of notes, syllables and phrases)
208
Fun Fact
White-crowned sparrows have different dialects in order to distinguish between newcomers and locals to avoid costly fights over territory
209
Which sex sings?
Normally its males can be a duet where both do, but it depends on who competes to breed
210
Why has song evolved?
Twin selective pressures - female choice and male-male competition
211
Describe the evidence for twin selective pressures causing the evolution of bird song
If you remove males from territories and replace them with speakers playing male song, or with no speakers (silent territory)
--- It takes a lot longer for males to occupy abandoned
territory when there are speakers
--- If there are nests with removed males and some nests
with speakers and some without, females are attracted
to the nests with speakers much more than the nests
without speakers
It can attract females and repel males
212
In male-male barn swallows what does the variation in the rattle indicate?
Correlated with male traits
- Long rattle - more testosterone
- Low frequency - better condition (good genetic condition,
there is also something about representing a costly fight
due to better condition, but I'm confused)
- Rattle correlates with breeding success
Has been linked to female choice
213
What traits do females want males songs to have?
More complex songs
Larger repertoires
214
Name at least 5 bits of information that are in birdsong?
Presence of potential mate
Individual identity
Where he was born & raised
Where is physically located at the time
Whether or not he owns a territory
His willingness to breed
Condition
Early environmental experience
“Quality”
215
What is a chaffinch a model species for?
Understanding the ontogeny (development) of bird song
216
How can the development of bird song be broken down?
Subsong - young birds producing rambling sound
Plastic song - first evidence of imitation and the rehearsal of songs
Crystallized song - full song expressed with normal variations
217
What are the song learning phases?
Sensory phase
Sensorimotor phase
Transition to crystalized song
218
What is the sensory phase
Must hear his normal species' song from other adult males. During this phase commits the song to memory, but may not sing at this time
occurs before subsong
219
What is the sensorimotor phase
where birds carry out vocal practice and include both the subsong and plastic song stages
220
What are the 3 types of learners
Seasonal closed learners
Age limited learners
Open-ended learners
221
Birds song is....
Fucking boring and confusing sorry if these flashcards are a bit shit I'm bored out of my mind
after this there are still hormones and neurobiology to come, I bet you cant wait!!!!!!
222
What hormone inhibits plasticity
Testosterone and is therefore important for crystallization
223
What hormone inhibits plasticity
Testosterone and is therefore important for crystallization
224
When do syllables increase in white-crowned sparrow?
When song crystalization occurs in spring and therefore an increase in testosterone
225
What are the song production nuclei
Higher vocal centre (HVc)
Robust nucleus of the archistriatum (RA)
The tracheosyringeal portion of the hypoglossal nucleus (nXIIts)
226
Where does song learning occur in the Anterior Forebrain Pathway?
Area X
Medial portion of the dorsolateral thalamus (DLM)
Lateral portion of the magnocellular nucleus of the anterior neostriatum (LMAN)
227
What do the anterior forebrain pathway and the song production pathway cell groups specialize in?
AFP = vocal learning
SPP = vocal learning and adult song
228
What is laterality?
particular syllables contain 2 notes that are sung alternately by each side of the syrinx and thus control of the rapid switching from one side of the syrinx to the other is required to produce these attractive syllables
229
How do seasons influence the regions of song production within male canaries
HVc is 99% larger
RA is 76% larger
in spring compared to autumn
230
How many times has song learning evolved independently?
2 or 3 times
2 phylogenetic trees but 3 types of vocal learners (Hummingbirds, parrots, passerine song birds)
231
Name a few environmental hazards for offspring that parental care can decrease
Predation
Hypoxia
Temperature
Food shortages
Parasites
Pathogens
Desiccation
232
Define parental care
behaviour that increases fitness of offspring (and is likely to have originated/maintained for this function)
233
Define parental investment
behaviour that increases offspring fitness at the cost of a parent's ability to reproduce in the future
234
Name a few forms of care that parents can provide
Provisioning of gametes - providing energy and nutrients
Oviposition site selection - nest/specific spawning site
Nest building and burrowing
Egg/offspring attendance - staying in the same location with young
Egg/offspring brooding - parents carrying young
Food provisioning
Care after nutritional independence
235
What are the varying levels of care?
Superprecocial - capable of independent living soon after birth
Precocial - relatively mature/mobile at birth/hatching
Altricial - young are immature at birth/hatching
236
Why is parental care costly
Increased predation
physiological cost - loss of body mass
237
What are the benefits of parental care
Improved offspring survival
improved offspring quality
Key to remember costs and benefits differ between species due to ecology
238
3 forms of care?
Maternal - mother
Paternal - father
Biparental - both = most common in birds
239
What parental care is associated with monogamy
1F + 1M biparental care
240
What parental care is associated with polygyny
>1F + 1M maternal care (most mammals)
241
What parental care is associated with polyandry
1F + >1M paternal care
242
fun stuff
There is some stuff about each type of animal and the forms of parental care and other niche facts however it's early and I cant be arsed so go to hoops notes on page 224
243
how can we predict who will care for the baby
- Natural selection favours the evolution of behaviour that will maximise lifetime reproductive success (LRS)
- LRS = which is obtained through the present brood & that which is obtained through all future broods
- Sex differences in these costs & benefits will influence probability of caregiving
244
State 5 factors of parental investment that will determine the amount of care given to offspring
Gamete sizes
Gamete production cost
Reproductive rate
Competition among the sex-producing small gametes
Males avoid parental care to find more mates
245
why are birds naughty
because they seem like they are monogamous however they love to spend the night in their neighbours nest
246
External fertilisers in fish lead to mainly which form of parental care
Paternal care
247
When is desertion opportunity highest for males and females in fish?
Males - is highest when internal fertilization occurs
Females - is highest when external fertilization occurs
248
What is association?
Williams (1975) suggested that association with embryos preadapts one of the sex's for parental care
internal fertilization = female association with embryo
External fertilization = eggs laid in the male's territory
249
How does paternity certainty affect parental care
causes males to adjust care depending on paternity certainty e.g. bluegill sunfish
250
What factor drives biparental care
When offspring is low when only one parent cares, potential due to predation or harsh environment
251
Why do parents abandon their young in poor condtions (which often leads to adoption)
Gain parental experience
= Better mother for future broods
Low costs (= no selection?)
= Female does not do that much
High cost to getting it wrong
= Could kick out your own offspring
= Ignore begging from own offspring
252
What is brood parasitism?
a breeding strategy where a bird goes and lays its eggs in another nest of the same or different species relying on unrelated foster parents to care for their young
253
What are the 2 types of brood parasitism
Obligate - when the parasite species is completely dependent e.g. coocoo's
Facultative - an alternative tactic and supplements parasites' own reproduction
254
What is essential for cooperative behaviours to occur
A cooperator and a recipent
255
What is the problem with cooperation
- Natural selection favours genes that increase individual fitness become dominate
256
What are the results of a cooperative behaviour?
Direct benefits - Reproductive success of the cooperator is increased
Indirect benefits - Reproductive success of individuals sharing the cooperator's genes is increased
257
Why do direct benefits and reciprocity work over time
increase the fitness of the cooperating individual and the recipient of the behaviour (but requires repeated interactions)
I help you, you help me, therefore, = mutualistic
258
Give an example of mutually beneficial behaviours
Cleaner wrasse cleans parasites from larger fish
- Wrasse gets a meal
Bites the flesh of the larger fish, however, know if they do it too often that the client will no longer return
- Larger fish gets ectoparasites removed
Larger fish is a parasite and could eat the wrasse however would not receive a benefit in the future
259
What are behaviours that benefit the recipient but not the cooperator called?
Altruistic behaviours
260
Why are Altruistic behaviours hard to explain evolutionarily?
Why help someone else when you don't benefit
Can be explained by continued interactions over a long time period - an example is vampire bats sharing food
261
What is indirect reciprocity and why do animals do it
Are apparent altruistic behaviours where the benefits come later
“If I help you, someone else helps me”
Cooperators gain reputational benefits which makes the altruistic behavior worthwhile in the long term
262
What is kin selection
A process by which traits are favoured because of their beneficial effects on the fitness of relatives
263
What is hamiltons rule
Cooperative genes should increase in frequency when the benefits (B) of cooperating are greater than the costs (C), depending on the level of relatedness (r).
rB - C > 0
264
What is key for kin selection to make it work
Animals must be able to recognize their relatives
265
How do animals recognize kin?
Shared environmental cues
= Familiarity or shared environments
Phenotype and self-referent matching
= Individuals that look like me are more closely related
Green bead effect
266
Describe environmental cues that animals can use to distinguish kin
acoustic cues, appearance, odour – or treat those sharing their environment as kin.
not genetic signatures
e.g. long-tailed tits recognize each other based on song cues
267
Describe Phenotype and self-referent matching that animals can use to distinguish kin
individual learns its own phenotype(s) and those of kin, stores information and uses it to determine the relatedness of unidentified animals, therefore, discriminating between kin and non-kin
268
Describe green beard effects that animals can use to distinguish kin
individuals preferentially direct cooperative behaviours to others sharing a distinctive genetic marker…e.g. a ‘green beard’ - Dawkins
- Very rare because unrelated cheaters that display markers will gain benefits of cooperation and spread in the population
- Making the green beards costly means there are very few cheaters
269
Name an example of when cooperation leads to inclusive fitness
Cooperative Courtship in Turkeys
males either do it on their own or with other subordinate turkeys
females like it when there are more subordinate turkeys in the courtship
however, females only ever mate with the dominant turkey
using hamiltons rule there is still a benefit of cooperating
270
How do you measure inclusive fitness?
Inclusive fitness = Direst fitness + r (indirect fitness)
r = relatedness
271
What is cooperative breeding?
A social system where individuals provide care for offspring that are not their own at the cost of their own reproduction
272
What is needed for cooperative breeding?
Breeders (1M+1F)
nonbreeding helpers (1 or more)
273
Cooperatively breeding animals discriminate between kin more when..........
the benefits of helping are greater
274
Which mating system is very unlikely when linked with cooperative breeding?
Promiscuity as offspring relatedness is more unknown
275
What are the life history and ecological constraints that lead to helpers?
LFC
- delayed maturity
- low adult mortality
- no/limited dispersal
- low reproductive rate
ECD
- shortage of territories
- shortage of mates
- high dispersal costs
- low success in breeding independently
WHICH ALL LEAD TO HELPERS HAVING V LITTLE OPPORTUNITY TO BREED BY THEMSELVES
276
What does the habitat saturation model show?
It shows that only after all the available territories were taken then cooperative breeding started
277
Which environment promotes cooperative breeding
harsh environments as they add more environmental pressures on the parents
278
How do helpers increase offspring numbers
Can increase food delivery and reduce the load on the breeding pair
279
Why do helpers help breeders?
Indirect fitness benefit
- By helping relatives
Direct fitness benefits
- benefits of group membership
== reduced predation and territorial defence
- gain breeding experience
- territory or mate inheritance
- participate in reproduction
280
What happens when a helper is removed from a group and reintroduced to the group
reintroduced helpers worked harder after being returned to the group - showing they must pay to stay
281
What factors will helpers consider when attempting to breed?
Levels of relatedness
Competitive ability - how easily can the helper be evicted from the group
Constraints on independent breeding - can a helper make it on their own
282
What model can explain the dynamics of reproduction?
Reproductive skew models - describe how social dynamics can regulate helper reproduction in a group
One end of the continuum is Helpers DO breed (reproductive concessions) the other is Helpers DO NOT breed (reproductive restraint)
283
What is the helper's dilemma and what factors do animals take into consideration when doing it?
Should they disperse or stay and help
- the relatedness of helpers
- availability of territories
284
What is migration?
The regular movement back and forth between two relatively distant locations by animals that use resources concentrated in these different sites (Alcock 2013).
285
What are the 3 types of navigation
Pilotage - steering using landmarks
Compass orientation - Ability to head in a particular compass direction without reference to landmarks
True navigation - ability to orientate toward a goal such as home/breeding area without use of landmarks and regardless of its direction
286
How many times has migration evolved independently
3
287
What is the cost of migration
● Extra weight that must be carried to build sufficient
energy reserves
● Temporary atrophy of reproductive organs
● Increase in muscle contraction efficiency
● Altered metabolism enabling birds to store fats
efficiently
● Risk of death during trip
● Must be well adapted to multiple habitats (predators,
parasites)
288
What does Emlen funnel measure
The pre-migratory restlessness
the orientation of the bird depends on time of year
this can be used to understand the migratory ques birds requires
289
What ques can animals use to navigate?
○ Visual
○ Olfactory
○ Atmospheric pressure
○ Sound
○ Geomagnetism
290
Examples of experiments that demonstrate that olfactory cues exist?
Dropping turtles north and south of the island those north found the island rapidly but those more southern took much longer to find it
291
Example of infrasound that can be used as a queue
Surf - to locate islands
292
How can songbirds migrate at night?
They use the oreintation of the sky/stars rather than particular constellations to orientate them selves and navigate
293
What did Emlen show about songbirds and star constellations
1. Indigo buntings raised without a night sky experience could not orient properly for migration
2. Birds exposed to planetarium sky rotating around Polaris between fledging and autumn migration showed normal southerly orientation
3. Birds are raised under the sky which rotates around Betelgeuse, a star in Orion that appears to the northern viewer to be in the southern sky, oriented in a northern direction.
use celestial cues as a compass
294
What happens when sun/moonlight enters the atmosphere and how can animals use it to navigate
It polarises and this shows the direction of the sun/moon due to the patterns that the animals see when observing the polarised light - especially in dung beetles
295
What is a continental map for birds?
When the bird has an understanding of the continent and knows which direction to go
296
How does the continental map vary in juvenile and adult birds
Adults have a better continental map as they have travelled to more places and have a better understanding, this allows them to compensate for the bearing when travelling south for example
However, juveniles have a lack continental map due to the lack of knowledge and therefor cant compensate and just follow their genetic programming to go south
297
What is communication
The transmission of information between a sender and a receiver that enables the latter to act appropriately
can involve "eavesdropping" and the use of "public information"
298
What can aposematism as a form of communication lead to
can lead to dishonesty with mimicry
299
List 4 types of communication
Visual
Audible
Chemical
Tactile
300
Which form of communication are birds thought to be lacking
Smell/chemical - no known pheromones
301
What are observations often limited by?
Our sensory systems and prejudices
302
What is the exemplar interaction of multi-model communication?
Drosophila courtship
303
What are the processes that occur during drosophila courtship?
Male orients to female
The male follows and vibrates the wing
Male licks female
Then shag time babeyyyyyy
304
How do you maintain the idea that the signal is the truth intraspecifically?
Signals have evolved to be costly
must be costly to send and therefore cost correlates with the sender's quality
305
How do signals evolve to increase the fitness of the sender?
By altering the behaviour of the receiver
306
Give an example both a signal and a cue
Size is a cue, not a signal, antlers are signals not cues
307
Give an example of when cues aren't always honest signals
Male baldness is due to too much testosterone
308
Why is the badge of status in birds a beneficial honest signal
Because it's not costly to produce energetically
309
What is the social cost if there is a dishonest badge size in birds
Other males will behave differently around the dishonest birds - showing that its cost is not in production but in social consequences
310
Give an example of a dishonest signal
crab - if it loses the claw it will grow the same size but not the same strength
There is also the example of the velvet monkeys that have different alarm calls depending on what the danger is. The introduction of food by researchers caused capuchin to vocalise alarm calls to remove the other monkeys and steal the food
311
What are the 2 main models for how evolution can occur
Punctuated
Gradual
312
What is punctuated evolution theory
A chance event happening
e.g. gene duplication event
313
What is gradual evolution theory
Consistent change over time
314
What is the biology vs cultural debate
Biology is universal in humans e.g. smiling
whereas there are cultural behaviours such as shaking hands when you meet someone
315
Why is it hard to measure human fitness?
Due to the different degrees of health care worldwide
healthcare = decrease in mortality rates
316
What are the stages of the demographic transition and fitness model
Stage 1= High stationary
Stage 2 = Early expanding
Stage 3 = Late expanding
Stage 4 = Low stationary
Stage 5 = Declining
317
What is the adaptation approach in the adaptation versus phylogenetic inertia debate
Adaptation = individuals behaviour reflects selective pressures exerted by the environment
318
What are the 2 approaches to understanding human behaviour in an evolutionary context
Human behavioural ecology
Evolutionary psychology
319
Describe Human behavioural ecology
Human traits that are appropriately adapted to their environment
320
Describe Evolutionary psychology
Using evolution to explain some of the psychological traits seen in humans
321
What is an example of where biological characteristics are dependent on rank?
High ranking male baboons have better cardiovascular health and low blood pressure
322
What was the Whitehall study
A study which asked 18,000 civil servants many kinds of health questions to see the impact of your job on your health
323
What did the Whitehall study conclude
High-level workers had a much lower mortality risk
Biggest indicators of poor health
○ Uncertainty
○ Lack of clarity
○ Lack of skill utilization
324
What is reproductive cessation?
Long-living mammals down-regulate their reproductive system to improve the fitness of younger members in the group by:
Knowledge transfer
Memory and experience
social networks
325
Evidence for reproductive cessation
In Gambia children found with a grandmother have a higher nutrition status and the chance of survival
326
What is the modular mind?
It organises sensory inputs into understandable information
327
.
.
328
What is the evidence for modules
perceptual system modularity
○ vision, hearing, and face recognition
Reflexes/relic behaviours
○ newborn mon response
The language instinct
○ acquisition too fast and preordained, and inherent grammatical structure in all languages
○ Dedicated areas of the brain
○ Broca's (production) and Wernicke's (comprehension)
Evolutionary psychology massive modularity
○ WHR detection, cheater detection, predator detection, incest avoidance (for most unless you live in a flyover state) and self recognition
(SORRY IF THAT DOESNT MAKE SENSE IM CONFUSED TOO)
329
What does the modular system feed into?
Our personal preferences and attractiveness
meaning people from different cultures, geolocations and access to resources have different preferences
330
What is cultural evolution
A process of change in the traits manifested within a population
that is explained by various forms of social learning among species members
331
What is culture?
The inheritance of acquired behaviours;
that is the totality of a person's learned, accumulated experience which is socially transmitted
332
Which population size has more transfer of knowledge
larger
333
What is social learning
learning from observing others around you - how cultures are formed
334
what is horizontal transmission
Transmission within a generation, sometimes also used to refer to transmission from any nonparent.
335
What is a meme
A cultural entity, intended to be analogous to a gene, capable of being replicated and transmitted between individuals
336
What is a replicator
An entity capable of being replicated and capable of influencing its own chances of being replicated through its effects on the world.
337
What is vertical transmission
transmission from parent to offspring, usually of genetic material
338
What are the differences between biological and cultural evolution?
sorry I'm not spending moneys look at your notes there's a beautiful table that displays it perfectly (pg 384 in hoops notes)
339
Name a few learned behaviours within the animal culture
Nest building
Vocalisation/songs
Tool use
340
Where does most evidence for cultures come from?
ethnographic descriptions of population differences
341
What does the phrase "Apes don't "ape" people do" refer to
Primates do not copy individuals in the way that humans do, they rather emulate
342
When comparing chimps vs children on copying relevant behaviour what were the results of the study
○ Children copy irrelevant behaviour more than chimps
○ There is no ratcheting and therefore more complex behaviours are harder to figure out by apes
○ Humans do not need to understand something to use it (cars, phones)
343
What is the dual inheritance theory
Human evolution is a combination of both biological and cultural processes
344
What did the accidental discovery of cooking allow us to do?
Increase the effieceny of nutrient uptake
which may have also influenced out teeth, guts and brains
345
What is cumulative culture
● Fundamental to modern humans
● Transmission of information with some “error” leading to a modification
○ Error can be by chance or intentional
● Information storage leads to the acceleration of information
346
What are the characteristics of a cultural replicator
Derived from the selfish gene
- high mutation rate
- spread not dependent on the accuracy
347
What are language families based on?
● Linked to human migration patterns
● Expansion of agriculture
● Horizontal transmission common
348
What is intelligence?
"Intelligence is a very general mental capability that, among other things, involves the ability to reason, plan, solve problems, think abstractly, comprehend complex ideas, learn quickly and learn from experience … it reflects a broader and deeper capability for comprehending our surroundings — ‘catching on,’ ‘making sense’ of things, or ‘figuring out’ what to do.” (Linda Gottfredson)
349
What is cognition
the mental process of acquiring knowledge and understanding through thought, experience, and the senses
350
Name one-way chimpanzees show signs of intelligence that we have studied
tool usage - termite fishing
351
What is the problem of apparent intelligence
● Nest building
○ Nest building is genetically hardwired, not intelligence rather innate
○ However it does improve over time, when does it become intelligence
● Blue tits
○ Cream would rise to the top, tits would open the milk and drink the cream
○ spread through the population, socially learnt
○ However there is an innate behaviour of finding insects
352
What is the social brain hypothesis
The hypothesis that suggest why primates brains are so big compared to there body
353
Explain the factors behind the social brain hypothesis
● Social complexity drives the evolution of intelligence
● Positive feedback loop between individuals in social
intelligence
● Social living has novel challenges
○ Maintaining group cohesion during a conflict
○ Communication
○ Individual recognition skills
○ Linked to parental care & long-lasting pair bonds
however things like diet tend to predict it better - and the evidence is very mixed
354
If a species is pair-bonded what's the effect on brain volume
pair bonded species = larger brain volume
355
What is the issue with the guilty dog experiment?
We are imparting human characteristics to dogs
If a treat was taken, they would scold the dog, found that it has nothing to do with a link to whether the dog ate the treat, rather that they were scolded
356
Name a method used to see if an animal knows they exist
The mirror self recognition experiment
357
Which animals that we have studied does the mirror self-recognition experiment work on?
Chimpanzee
Dolphins
Asian elephant
Corvids
358
What is a key driving factor in establishing whether the self-recognition test will work
Motivation - African elephant and gorillas want to smash the mirror
359
What is the theory of mind?
the ability to understand and take into account another individual's mental state or of “mind-reading”
360
How can you test the theory of mind in children?
Ernie the toy puts the ball under one box he leaves they switch the box and then ask the child where Ernie will think the ball is
361
How can the theory of mind be shown in primates?
2 containers - grasped or accidentally touched
the primates can distinguish between the intent
they are more interested in intentional behaviours showing the theory of mind
362
What are the limits to non-human language
- Language is not communication. need syntax
- Apes mainly communicate requests
- little evidence for metaphor or creativity
- Human language used for "time-travel" past present future
363
Define change in behaviour in the following experience
cannot be understood in terms of maturational growth processes in the nervous system, fatigue or sensory adaptation - Robert hinde (1970)
NGL go look at this yourselves cos bare confusing there's some shit about habitation, adaption and sensitisation as well as operant/classical condition. I'm sure it all links together but fuck knows how
364
What is habituation
When animals stop responding to repeated stimuli
