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Ch 11 Feb 11 Lecture.docx

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Ben Evans

Chapter 11 Hunting: -pursue other living things for food. - In apes/primates , OWP, hunts other primates, birds - In chimps and bonobos as well, high cooperative Looking at DNA and deces to see if gorillas, bonobos and chimps eat meat . there will be DNAfrom other organisms. Using barcodes to identify dna from other mammals - Can also due to contamination. - Communities don’t think gorillas eat meat - Food sharing is crucial. - Can have even distribution of food or clumped food. Lead to aggression, hierarchy - Reduced feeding opportunity when it is clumped - Can defend food resources or share food with other individuals Chimps and bonobos have different social hierarchy. Bonobos eat evenly shared food, terrestrial l herbal vegetation. Chimps have clumped food sources and more hierarchy. Other than group size , there is also predation. Need to worry about predators. More individuals in a group is better to detect predators. Large group size becomes resources , lead to sexual selection. If there are more females in one area, can trigger male-male competition, leads to different morphological differences between males and females. Transmission of disease and pathogens – play a factor in group size Distribution of food matters, relates to sexual reproduction. Is cooperation is needed for hunting? Defend food resources? [all these affect evolution] Too
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