Results 51 to 60 of about 154,113 (272)

Altruism can proliferate through group/kin selection despite high random gene flow [PDF]

open access: yes, 2012
The ways in which natural selection can allow the proliferation of cooperative behavior have long been seen as a central problem in evolutionary biology. Most of the literature has focused on interactions between pairs of individuals and on linear public
A Gardner   +53 more
core   +8 more sources

Chronometry for the chorusing herd: Hamilton's legacy on context-dependent acoustic signalling—a comment on Herbers (2013) [PDF]

open access: yes, 2014
Biology Letters’ special feature on Hamilton’s legacy pays due tribute to a brilliant mind. Herbers [1] and the other contributors paint a compelling picture of how Hamilton’s work on inclusive fitness anticipated much contemporary evolutionary thinking,
Ravignani, A.
core   +1 more source

Can Hamilton’s rule be violated?

open access: yeseLife, 2018
How generally Hamilton’s rule holds is a much debated question. The answer to that question depends on how costs and benefits are defined. When using the regression method to define costs and benefits, there is no scope for violations of Hamilton’s rule.
Matthijs van Veelen
doaj   +1 more source

Psychopathy, adaptation, and disorder [PDF]

open access: yes, 2013
In a recent study, we found a negative association between psychopathy and violence against genetic relatives. We interpreted this result as a form of nepotism and argued that it failed to support the hypothesis that psychopathy is a mental disorder ...
Craig eSheriff   +5 more
core   +2 more sources

The evolution of ageing in cooperative breeders

open access: yesEvolution Letters, 2022
Cooperatively breeding animals live longer than their solitary counterparts. This has been suggested for birds, mole rats, and social insects. A common explanation for these long lifespans is that cooperative breeding evolves more readily in long‐lived ...
Jan J. Kreider   +3 more
doaj   +1 more source

When resistance is useless: policing and the evolution of reproductive acquiescence in insect societies [PDF]

open access: yes, 2004
In social groups composed of kin, inclusive fitness benefits can favor greater cooperation. Alternatively, cooperation can be enforced through the policing of less cooperative individuals.
Hart, A.G.   +2 more
core   +2 more sources

Matrilateral Bias in Human Grandmothering

open access: yesFrontiers in Sociology, 2017
Children receive more care and resources from their maternal grandmothers than from their paternal grandmothers. This asymmetry is the “matrilateral bias” in grandmaternal investment. Here, we synopsize the evolutionary theories that predict such a bias,
Martin Daly, Gretchen Perry
doaj   +1 more source

The Abduction of Disorder in Psychiatry [PDF]

open access: yes, 1999
The evolutionary cornerstone of J. C. Wakefield's (1999) harmful dysfunction thesis is a faulty assumption of comparability between mental and biological processes that overlooks the unique plasticity and openness of the brain?s functioning design.
Hinshaw, Stephen P., Richters, John E.
core   +1 more source

Intrasexual selection: Kin competition increases male‐male territorial aggression in a monogamous cichlid fish

open access: yesEcology and Evolution, 2020
During intrasexual competition, individuals of the same sex compete for access to breeding sites and mating partners, often accompanied by aggressive behavior.
Simon Vitt, Jenny Hiller, Timo Thünken
doaj   +1 more source

Kin discrimination, negative relatedness, and how to distinguish between selfishness and spite

open access: yesEvolution Letters, 2020
Spiteful behaviors occur when an actor harms its own fitness to inflict harm on the fitness of others. Several papers have predicted that spite can be favored in sufficiently small populations, even when the harming behavior is directed indiscriminately ...
Matishalin Patel   +2 more
doaj   +1 more source

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