KA 4: sex and behaviour: reproductive behaviours and mating systems in animals Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

whats the range of mating systems?

A

polygamy (polygyny and polyandry) to monogamy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what are mating systems based on?

A

how many mates an individual has during one breeding season

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what is monogamy?

A

the mating of a pair of animals to the exclusion of all others

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is polygamy?

A

individuals of one sex have more than one mate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what is polygyny?

A

one male mates exclusively with a group of females

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is polyandry?

A

one female mates with a number of males in the same breeding season

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what do many animals have?

A

mate-selection courtship rituals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what can successful courtship behaviour in birds and fish be a result of?

A

species-specific sign stimuli and fixed action pattern responses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what does sexual selection select for?

A

characteristics that have little survival benefit for the individual, but increase their chances of
mating

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what do many species exhibit as a product of sexual selection?

A

sexual dimorphism

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

females are generally….

A

inconspicuous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

males usually have more…

A

conspicuous markings, structures and behaviours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what occurs in some species?

A

reversed sexual dimorphism

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what does female choice involve?

A

females assessing honest signals of the fitness of males

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what can honest signals indicate?

A

-favourable alleles that increase the chances of survival of offspring (fitness)

-low parasite burden suggesting a healthy individual

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

in lekking species, what happens regarding male displays and female choice?

A

males gather to display a lek, where female choice occurs

17
Q

describe how some birds exhibit lekking behaviour

A

dominant males occupy the centre of the lek, with subordinates and juveniles at the fringes as “satllite” males. During the display, female choice occurs

18
Q

what increases access to females for mating?

A

success in male-male rivalry through conflict (real or ritualised)

19
Q

how will males fight for dominance and access to females?

A

using elaborate “weapons” such as antlers, tusks, horns