Heat hardening capacity in Drosophila melanogaster is life stage-specific and juveniles show the highest plasticity.

ABSTRACT: Variations in stress resistance and adaptive plastic responses during ontogeny have rarely been addressed, despite the possibility that differences between life stages can affect species' range margins and thermal tolerance. Here, we assessed the thermal sensitivity and hardening capacity of Drosophila melanogaster across developmental stages from larval to the adult stage. We observed strong differences between life stages in heat resistance, with adults being most heat resistant followed by puparia, pupae and larvae. The impact of heat hardening (1 h at 35°C) on heat resistance changed during ontogeny, with the highest positive effect of hardening observed in puparia and pupae and the lowest in adults. These results suggest that immobile life stages ( puparia and pupae) have evolved high

SUBMITTER: Moghadam NN 

PROVIDER: S-EPMC6405463 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature