Shifts in Reproductive Investment in Response to Competitors Lower Male Reproductive Success
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چکیده
منابع مشابه
Male age mediates reproductive investment and response to paternity assurance
Theory predicts that male response to reduced paternity will depend on male state and interactions between the sexes. If there is little chance of reproducing again, then males should invest heavily in current offspring, regardless of their share in paternity. We tested this by manipulating male age and paternity assurance in the burying beetle Nicrophorus vespilloides. We found older males inv...
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Life-history theory predicts that individuals should adjust their reproductive effort according to the expected fitness returns on investment. Because sexually selected male traits should provide honest information about male genetic or phenotypic quality, females may invest more when paired with attractive males. However, there is substantial disagreement in the literature whether such differe...
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In many species, males can influence the amount of resources their mates invest in reproduction. Two favoured hypotheses for this observation are that females assess male quality during courtship or copulation and alter their investment in offspring accordingly, or that males manipulate females to invest heavily in offspring produced soon after mating. Here, we examined whether there is genetic...
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ژورنال
عنوان ژورنال: The American Naturalist
سال: 2020
ISSN: 0003-0147,1537-5323
DOI: 10.1086/709821