Bet hedging based cooperation can limit kin selection and form a basis for mutualism
نویسندگان
چکیده
منابع مشابه
Natural selection on fecundity variance in subdivided populations: kin selection meets bet hedging.
In a series of seminal articles in 1974, 1975, and 1977, J. H. Gillespie challenged the notion that the "fittest" individuals are those that produce on average the highest number of offspring. He showed that in small populations, the variance in fecundity can determine fitness as much as mean fecundity. One likely reason why Gillespie's concept of within-generation bet hedging has been largely ...
متن کاملCooperation and Specialisation without Kin Selection
We present a model that demonstrates the evolution of groups composed of cooperative individuals performing specialised functions. Specialisation and cooperation results from an evolutionary process in which selection and reproduction is based on individual fitness. Specialists come to help (through the donation of resources) their non-kin group members, optimising their behaviour as a team and...
متن کاملBreeding together: kin selection and mutualism in cooperative vertebrates.
In cooperatively breeding vertebrates, nonbreeding helpers raise young produced by dominant breeders. Although the evolution of cooperative breeding has often been attributed primarily to kin selection (whereby individuals gain "indirect" benefits to their fitness by assisting collateral relatives), there is increasing evidence that helpers can be unrelated to the young they are raising. Recent...
متن کاملBet-hedging via polyandry: a comment on 'Mating portfolios: bet-hedging, sexual selection and female multiple mating'.
Garcia-Gonzalez et al. [1] conducted an original and elegant experiment examining whether fertilization of a female’s eggs by multiple males (polyandry) can provide fitness benefits via ‘bet-hedging’ (i.e. due to decreased variance in offspring fitness). The authors measured these benefits in both stable and variable environments, and also quantified the joint fitness consequences of bet-hedgin...
متن کاملMating portfolios: bet-hedging, sexual selection and female multiple mating.
Polyandry (female multiple mating) has profound evolutionary and ecological implications. Despite considerable work devoted to understanding why females mate multiply, we currently lack convincing empirical evidence to explain the adaptive value of polyandry. Here, we provide a direct test of the controversial idea that bet-hedging functions as a risk-spreading strategy that yields multi-genera...
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ژورنال
عنوان ژورنال: Journal of Theoretical Biology
سال: 2011
ISSN: 0022-5193
DOI: 10.1016/j.jtbi.2011.04.002