Mating portfolios: bet-hedging, sexual selection and female multiple mating
نویسندگان
چکیده
منابع مشابه
Mating 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...
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 کاملBet-hedging and the evolution of multiple mating
Two related bet-hedging hypotheses have been proposed to explain the evolution of multiple mating by females. The first examines fitness of females within a single type of environment, and predicts that multiple mating can increase fitness by reducing the probability that all of a female’s eggs are fertilized by a poor-quality male. The second examines fitness across environments and predicts t...
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Female zebra finches may be influenced by the choices of other females when selecting mates, challenging the view that mate-choice copying should not occur in species with biparental care. Choosing a mate is not a simple business. A female needs a male in order to reproduce, but how does she know which one to pick? How can she find a good mate without wasting too much time and effort? One answe...
متن کاملSexual selection and mating systems.
Sexual selection is among the most powerful of all evolutionary forces. It occurs when individuals within one sex secure mates and produce offspring at the expense of other individuals within the same sex. Darwin was first to recognize the power of sexual selection to change male and female phenotypes, and, in noting that sexual selection is nonubiquitous, Darwin was also first to recognize the...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society B: Biological Sciences
سال: 2015
ISSN: 0962-8452,1471-2954
DOI: 10.1098/rspb.2014.1525