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Fluctuating thermal environments and time‐dependent effects on fruit fly egg‐hatching performance

Cavieres, Grisel ; Bogdanovich, José M. ; Toledo, Paloma ; Bozinovic, Francisco

Ecology and evolution, 2018-07, Vol.8 (14), p.7014-7021 [Periódico revisado por pares]

England: John Wiley & Sons, Inc

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  • Título:
    Fluctuating thermal environments and time‐dependent effects on fruit fly egg‐hatching performance
  • Autor: Cavieres, Grisel ; Bogdanovich, José M. ; Toledo, Paloma ; Bozinovic, Francisco
  • Assuntos: Changing environments ; Drosophila melanogaster ; Eggs ; Environmental effects ; Exposure ; Fitness ; Fluctuations ; Fruit flies ; Hatching ; hatching success ; Ontogeny ; Original Research ; Thermal environments ; thermal variability ; Time dependence ; time‐dependent effects ; Variability ; Viability
  • É parte de: Ecology and evolution, 2018-07, Vol.8 (14), p.7014-7021
  • Descrição: Organismal performance in a changing environment is dependent on temporal patterns and duration of exposure to thermal variability. We experimentally assessed the time‐dependent effects of thermal variability (i.e., patterns of thermal exposure) on the hatching performance of Drosophila melanogaster. Flies were collected in central Chile and maintained for four generations in laboratory conditions. Fourth generation eggs were acclimated to different thermal fluctuation cycles until hatching occurred. Our results show that the frequency of extreme thermal events has a significant effect on hatching success. Eggs exposed to 24 hr cycles of thermal fluctuation had a higher proportion of eggs that hatched than those acclimated to shorter (6 and 12 hr) and longer cycles (48 hr). Furthermore, eggs subjected to frequent thermal fluctuations hatched earlier than those acclimated to less frequent thermal fluctuations. Overall, we show that, egg‐to‐adult viability is dependent on the pattern of thermal fluctuations experienced during ontogeny; thus, the pattern of thermal fluctuation experienced by flies has a significant and until now unappreciated impact on fitness. Organismal performance in a changing environment is dependent on temporal patterns and duration of exposure to thermal variability. Our results showed that the frequency of extreme thermal events has a significant effect on hatching success. Hatching performance is dependent on the pattern of thermal fluctuations experienced during ontogeny.
  • Editor: England: John Wiley & Sons, Inc
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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