ENGLISH

Group Selection in Predator-Prey Communities. (MPB-9), Volume 9

By Michael E. Gilpin

Book information

Publisher
Princeton University Press
Year
2020
ISBN
9780691209463
DOI
10.1515/9780691209463
Language
english
Format
PDF
Filesize
12 MB (12065391 bytes)
Series
Monographs in Population Biology; 9
Pages
124\125
Library
degruyter.com
Time added
2023-08-23 23:10:10

Description

Many animals regulate their population density by patterns of behavior that would be easy to explain if the forces of natural selection acted to optimize group properties. But Darwinian selection acts on individuals, not groups, and most simple theories have shown group selection to be too slow ever to oppose individual selection successfully.In this book Michael Gilpin presents a model, based on predator-prey dynamics, wherein nonlinear effects are important, so that small advantages to the selfish individual are nonlinearly amplified into disaster for his group. The result is that group selection can be rapid and powerful. Of course many instances of apparent group selection can be explained by kin selection; in other cases, close examination reveals that seemingly altruistic behavior directly benefits the individual genotype as well as the group. The value of the monograph is that it provides a robust model in which group selection, pure and unadulterated, can be seen to work.

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