Evolution of cooperation Flashcards
(34 cards)
Which science has a lot to say about behv?
Biology
What is altruism??
A behv that benefits a recipient and that has direct fitness costs to an actor
What question does Jean ask to help understand altruism?
Would you take a bullet for your dog?!
Where do terms differs?
Biology, social sciences and everyday conversation
What definitions do we take when looking at altruism?
Biology
What is an actor in biology?
Individual doing the behaviour
What is a recipient?
The individual affected by the behv of an actor
What is social behv?
A behv that has fitness consequences for both actor and a recipient
What is an example of social behv?
Actor - Person shots someone and steals their wallet
Recipient - Person who got shot/wallet stolen
What is this? Social Behv
What is cooperation?
Any behv that benefits the recipient
a net gain in their fitness
If the effect on actor is + AND
The effect on recipient is +
Mutually beneficial
If effect on actor is + AND
the effect on the recipient is -
Selfish
If the effect on actor is - AND
effect on recipient +
Altruistic
Superman?! makes for a good film!
If the effect on actor is - AND
effect on recipient is -
Spiteful
Actor/Recipient
+/+ Win win - mutually beneficial
-/+ Altruism - sacrifice to benefit someone else
Cleaner fish plucking parasites/fungi out of the mouth of another fish
+/+ !!
Cleaner fish = actor
Fish = recipient
Cleaner fish gets food - gets enough to eat
Fish gets rid of parasites - avoid injury & disease
Wolf pair bonds with another wolf & helps her hunt &/or rear offspring
+/+
Actor = male wolf
Recipient = female wolf
Male = reproduction - passing on his genes and getting enough to eat!
Female = reproduction/enough to eat
Lassie - throw herself in front of a bullet
-/+
actor = lassie
recipient = timmy
Lassie = dead :(
Timmy = survival
How does social behv play out in populations??
They all get along fine it’s woodstock. no significant price for either type
What happens to the population if a +/- dog comes in??
the +/- dog wins and breed n
How can the -/+ guys do well??
Protecting young - loudly feigning injury to ensure survival of offspring
What is inclusive fitness
It’s not just about ones direct fitness, it’s about protecting the genes in related animals. It’s a net gain taking a bullet to lose 1 copy to protect 4 copies
Who was WD Hamilton
UK Biologist who was a significant contributor to evolutionary biology and natural selection re behv
Who was WD Hamilton
UK Biologist who was a significant contributor to evolutionary biology and natural selection re behv
