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The Evolution of Mammalian Sociality in an Ecological Perspective

The Evolution of Mammalian Sociality in an Ecological Perspective

Paperback

Series: Springerbriefs in Ecology

Environmental StudiesEvolution

ISBN10: 331903930X
ISBN13: 9783319039305
Publisher: Springer
Published: Jan 30 2014
Pages: 112
Weight: 0.42
Height: 0.27 Width: 6.14 Depth: 9.21
Language: English

This brief discusses factors associated with group formation, group maintenance, group population structure, and other events and processes (e.g., physiology, behavior) related to mammalian social evolution. Within- and between-lineages, features of prehistoric and extant social mammals, patterns and linkages are discussed as components of a possible social tool-kit. Top-down (predators to nutrients), as well as bottom-up (nutrients to predators) effects are assessed. The present synthesis also emphasizes outcomes of Hebbian (synaptic) decisions on Malthusian parameters (growth rates of populations) and their consequences for (shifting) mean fitnesses of populations. Ecology and evolution (EcoEvo) are connected via the organism's norms of reaction (genotype x environment interactions; life-history tradeoffs of reproduction, survival, and growth) exposed to selection, with the success of genotypes influenced by intensities of selection as well as neutral (e.g. mutation rates) and stochastic effects. At every turn, life history trajectories are assumed to arise from decisions made by types responding to competition for limiting resources constrained by Hamilton's rule (inclusive fitness operations).

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Environmental Studies