BIOL 302 Chapter Notes - Chapter 10: Inclusive Fitness, Selfishness, Eusociality
Document Summary
There are benefits and costs when living in groups. Variety of social interactions developed through evolutionary time. Eusocial species take social interactions to the extreme. Social behaviours: interactions with members of one"s own species, including mates, offspring, other relatives, and unrelated individuals. Have a genetic basis and are subject to natural selection. Exists in vertebrates and invertebrates: such as bacteria and protists. Many species and organisms have social groupings and it plays a vital role in life: some never disperse, others do for mating, and others stick with small groups. Benefits of living in groups: increases many aspects of life such as: Success in finding mates: grouping allows for increase survival against predators. Stronger in numbers less likely to be killed off with 100 vs 1 predator: dilution effect: The reduced, or diluted, probability of predation to a single animal when it is in a group.
