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- W3147444966 abstract "We explored the idea that sex ratio represents a unique context for selection on attractive traits by manipulating sex ratio and pollinator abundance in experimental populations of a gender‐dimorphic wild strawberry Fragaria virginiana. We found that increasing the frequency of functional males (the pollen‐bearing morph) increased the frequency of pollen‐collecting syrphid flies in the pollinator assemblage, decreased pollinator visitation to less preferred morph (females), and decreased the degree of pollen limitation of females. Moreover, sex ratio influenced the strength of selection on petal size through female fitness but did not alter the strength of selection through male fitness components, suggesting that sex ratio can alter the gender bias of selection on an attractive trait. This study of context‐dependent selection has important implications for the evolution of sexual dimorphism in attractive traits. First, it suggests that only certain conditions generate male‐biased selection and, thus, could lead to selection‐driven male‐biased petal size dimorphism. Second, it suggests that flexible pollinator foraging may be an important mechanism by which sex ratio influences selection on attractive traits. Finally, it implies that variation in sex ratio could limit the evolution of sexual dimorphism and/or could maintain genetic variation in attractive traits." @default.
- W3147444966 created "2021-04-13" @default.
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- W3147444966 date "2001-01-01" @default.
- W3147444966 modified "2023-09-26" @default.
- W3147444966 title "Sex Ratio Represents a Unique Context for Selection on Attractive Traits: Consequences for the Evolution of Sexual Dimorphism" @default.
- W3147444966 doi "https://doi.org/10.2307/3079195" @default.
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