PSYC 3201 Lecture Notes - Lecture 5: Sand Martin, Barn Swallow, Protozoa
12 Dec 2016
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Florida scrubjays: offspring grow to adults and become nest helpers that help parents brood next offspring, they"re so used to being studied that they fly onto your head! Nepotism in ants: researchers anchor ants into sand so they are trapped, only homocolonial nestmates (kin) help rescue the trapped ant. Conspecific altruism and heterospecific altruism in chimps and humans: if man drops item, toddler will hand it to him, if man drops item, chimp will also hand it to him. Grey-crowned babbler: helpers removed less reproductive success for parents for next offspring, the helpers inherit territories of their dead parents and are more successful in rearing their first brood. Susceptible to cheating (someone may not be there when you need help) Cooperation with temporal component (time interval in between) Subordinate 1 will attack the alpha male while subordinate 2 mates with alpha"s partner. Then, subordinate 2 will attack and subordinate 1 will mate. 4 mechanisms of kin recognition: spatial distribution.
