Results 41 to 50 of about 277,765 (323)

Limited indirect fitness benefits of male group membership in a lekking species [PDF]

open access: yes, 2014
In group living species, individuals may gain the indirect fitness benefits characterizing kin selection when groups contain close relatives. However, tests of kin selection have primarily focused on cooperatively breeding and eusocial species, whereas ...
Alatalo   +70 more
core   +2 more sources

Nepotistic patterns of violent psychopathy: evidence for adaptation? [PDF]

open access: yes, 2012
Psychopaths routinely disregard social norms by engaging in selfish, antisocial, often violent behavior. Commonly characterized as mentally disordered, recent evidence suggests that psychopaths are executing a well-functioning, if unscrupulous strategy ...
Craig eSheriff   +7 more
core   +3 more sources

Kin and multilevel selection in social evolution: a never-ending controversy? [version 1; referees: 4 approved]

open access: yesF1000Research, 2016
Kin selection and multilevel selection are two major frameworks in evolutionary biology that aim at explaining the evolution of social behaviors. However, the relationship between these two theories has been plagued by controversy for almost half a ...
Jos Kramer, Joël Meunier
doaj   +1 more source

Extending the range of additivity in using inclusive fitness

open access: yesEcology and Evolution, 2021
Inclusive fitness is a concept widely utilized by social biologists as the quantity organisms appear designed to maximize. However, inclusive fitness theory has long been criticized on the (uncontested) grounds that other quantities, such as offspring ...
Samuel R. Levin, Alan Grafen
doaj   +1 more source

Involvement of Flagellin in Kin Recognition between Bacillus velezensis Strains

open access: yesmSystems, 2022
Kin discrimination in nature is an effective way for bacteria to stabilize population cooperation and maintain progeny benefits. However, so far, the research on kin discrimination for Bacillus still has concentrated on “attack and defense” between cells
Yan Liu   +8 more
doaj   +1 more source

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   +4 more sources

Kin selection and altruism [PDF]

open access: yesCurrent Biology, 2019
Natural selection is predicated on the 'struggle for existence': life is short, cruel and, whether through predation, disease or starvation, often ends traumatically. It would seem that in such a dog-eat-dog world, organisms ought to act selfishly, and avoid reducing their fitness (expected survival and reproductive success) by expending time and ...
Kay, T., Lehmann, L., Keller, L.
openaire   +3 more sources

Grandparental Childcare for Biological, Adopted, and Step-Offspring: Findings From Cross-National Surveys

open access: yesEvolutionary Psychology, 2020
Based on kin selection theory, amounts of grandparental investment should reflect the probability to share common genes with offspring. Adoption may represent a special case, however, yet grandparental investment in adopted children has previously been ...
Antti O. Tanskanen   +2 more
doaj   +1 more source

Kin selection with twin genetic programming [PDF]

open access: yes, 2016
In steady state Twin GP both children created by sub-tree crossover and point mutation are used. They are born together and die together. Evolution is little changed.
Langdon, WB
core   +1 more source

Kin Selection and Its Critics [PDF]

open access: yesBioScience, 2014
Hamilton's theory of kin selection is the best-known framework for understanding the evolution of social behavior but has long been a source of controversy in evolutionary biology. A recent critique of the theory by Nowak, Tarnita, and Wilson sparked a new round of debate, which shows no signs of abating.
Birch, Jonathan, Okasha, Samir
openaire   +4 more sources

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