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Phenotypic Responses to and Genetic Architecture of Sterility Following Exposure to Sub-Lethal Temperature During Development

Zwoinska, Martyna K. (författare)
Stockholms universitet,Zoologiska institutionen
Rodrigues, Leonor R. (författare)
Stockholms universitet,Zoologiska institutionen
Slate, Jon (författare)
visa fler...
Snook, Rhonda R. (författare)
Stockholms universitet,Zoologiska institutionen
visa färre...
 (creator_code:org_t)
2020-06-03
2020
Engelska.
Ingår i: Frontiers in Genetics. - : Frontiers Media SA. - 1664-8021. ; 11
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • Thermal tolerance range, based on temperatures that result in incapacitating effects, influences species' distributions and has been used to predict species' response to increasing temperature. Reproductive performance may also be negatively affected at less extreme temperatures, but such sublethal heat-induced sterility has been relatively ignored in studies addressing the potential effects of, and ability of species' to respond to, predicted climate warming. The few studies examining the link between increased temperature and reproductive performance typically focus on adults, although effects can vary between life history stages. Here we assessed how sublethal heat stress during development impacted subsequent adult fertility and its plasticity, both of which can provide the raw material for evolutionary responses to increased temperature. We quantified phenotypic and genetic variation in fertility ofDrosophila melanogasterreared at standardized densities in three temperatures (25, 27, and 29 degrees C) from a set of lines of theDrosophilaGenetic Reference Panel (DGRP). We found little phenotypic variation at the two lower temperatures with more variation at the highest temperature and for plasticity. Males were more affected than females. Despite reasonably large broad-sense heritabilities, a genome-wide association study found little evidence for additive genetic variance and no genetic variants were robustly linked with reproductive performance at specific temperatures or for phenotypic plasticity. We compared results on heat-induced male sterility with other DGRP results on relevant fitness traits measured after abiotic stress and found an association between male susceptibility to sterility and male lifespan reduction following oxidative stress. Our results suggest that sublethal stress during development has profound negative consequences on male adult reproduction, but despite phenotypic variation in a population for this response, there is limited evolutionary potential, either through adaptation to a specific developmental temperature or plasticity in response to developmental heat-induced sterility.

Ämnesord

NATURVETENSKAP  -- Biologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences (hsv//eng)

Nyckelord

climate change
heat stress
thermal fertility limits
heat-induced male sterility
DrosophilaGenetic Reference Panel
Drosophila melanogaster
GWAS
phenotypic plasticity

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Zwoinska, Martyn ...
Rodrigues, Leono ...
Slate, Jon
Snook, Rhonda R.
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Stockholms universitet

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