Sex- and trait-specific silver-spoon effects of developmental environments, on ageing

Sanghvi, Krish; Zajitschek, Felix; Iglesias-Carrasco, Maider; Head, Megan L.

doi:10.5061/dryad.qbzkh18gw

Cited by 2 publications

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Sex- and trait-specific silver-spoon effects of developmental environments, on ageing

et al. 2021

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The environment organisms experience during development can have effects which carry over into their adult lives. These environments not only affect adult traits at a given point in time, but also how these traits change with age. Generally, favorable developmental environments lead to more optimal adult traits while stressful environments are deleterious ("silver-spoon effect"). But whether developmental environments affect how whole-organism performance traits change with age or whether they affect males and females differently lacks evidence. Here, we test whether experiencing favorable developmental environments leads to "silver-spoon effects" on life-history traits and whole-organism flight performance of males and females by manipulating developmental density in Callosobruchus maculatus. We further test whether such effects are mediated by an individual's reproductive status by comparing traits of mated versus virgin females. We show that although developmental crowding has no effect on flight performance of either sex, on male adult lifespan, or on female age-dependent survival, it is detrimental to female lifespan and fecundity, as well as female age-dependent reproduction, suggesting that females are more sensitive to differences in developmental density. Additionally, we show that flight traits change with age and differ not only between males and females, which is reflective of sex-specific lifehistories and behavior, but also between virgin and mated females. Our study is important for understanding sex-specific responses to developmental environments in life-history, behavioral, and ecologically important traits which may affect resource allocation, dispersal, and mating strategies, hence fitness.

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Sex- and trait-specific silver-spoon effects of developmental environments, on ageing

et al. 2021

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Sex-specific effects of developmental density on life history and age-dependent flight traits

Sanghvi

Zajitschek

Iglesias‐Carrasco

et al. 2020

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The environment organisms experience during development can have effects which carry over into their adult lives. These developmental environments may not only affect adult traits at a given point in time, but also how these traits change with age. Generally, stressful developmental environments can lead to sub-optimal adult fitness traits and a faster deterioration of these traits with age. But whether these environments affect how performance traits change with age or whether they affect males and females differently lacks evidence. Here, we test the sex-specific effects of crowding during development on life history traits such as lifespan, fecundity, age-dependent survival, and reproductive senescence, as well as flight performance traits, in the seed beetle- Callosobruchus maculatus. We show that although developmental crowding has no effect on flight performance of either sex, on male adult lifespan, or on female age-dependant survival, it is detrimental to female lifespan and fecundity, as well as female age-dependent reproduction. Additionally, we show that flight traits can change with age and differ between males and females, which may be reflective of sex-specific life-histories and behaviour. Our study has implications for understanding how developmental environments affect life history and behavioural strategies of both males and females.

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Sex- and trait-specific silver-spoon effects of developmental environments, on ageing

Cited by 2 publications

References 2 publications

Sex- and trait-specific silver-spoon effects of developmental environments, on ageing

Sex- and trait-specific silver-spoon effects of developmental environments, on ageing

Sex-specific effects of developmental density on life history and age-dependent flight traits

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