Physiological responses to a changing winter climate in an early spring‐breeding amphibian DOI Creative Commons
Robin Schmidt, Cecile Zummach, Noa Sinai

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(7)

Published: July 1, 2024

Abstract Climate change is swiftly altering environmental winter conditions, leading to significant ecological impacts such as phenological shifts in many species. As a result, animals might face physiological mismatches due longer or earlier activity periods and are at risk of being exposed late spring freezes. Our study points for the first time complex challenges that amphibians result changing thermal conditions climate change. We investigated responses period warmer days sudden freeze common toad ( Bufo bufo ) by acclimating them 4°C 8°C 48 h exposing −2°C 6 h, respectively. assessed daily energy demands, determined body condition cold tolerance, explored molecular freezing through hepatic tissue transcriptome analysis, measured blood glucose levels. Toads acclimated higher temperatures showed expenditure reduced tolerance suggesting faster depletion stores loss acclimation during winters. Blood sugar levels were frozen toads indicating mobilization cryoprotective with which was further supported changed patterns proteins related metabolism. Overall, our results emphasize increased variability incurs costs may reduce reserves thus affect amphibian health survival. This pose serious threat breeding adults have subsequent effects population level.

Language: Английский

Physiological responses to a changing winter climate in an early spring‐breeding amphibian DOI Creative Commons
Robin Schmidt, Cecile Zummach, Noa Sinai

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(7)

Published: July 1, 2024

Abstract Climate change is swiftly altering environmental winter conditions, leading to significant ecological impacts such as phenological shifts in many species. As a result, animals might face physiological mismatches due longer or earlier activity periods and are at risk of being exposed late spring freezes. Our study points for the first time complex challenges that amphibians result changing thermal conditions climate change. We investigated responses period warmer days sudden freeze common toad ( Bufo bufo ) by acclimating them 4°C 8°C 48 h exposing −2°C 6 h, respectively. assessed daily energy demands, determined body condition cold tolerance, explored molecular freezing through hepatic tissue transcriptome analysis, measured blood glucose levels. Toads acclimated higher temperatures showed expenditure reduced tolerance suggesting faster depletion stores loss acclimation during winters. Blood sugar levels were frozen toads indicating mobilization cryoprotective with which was further supported changed patterns proteins related metabolism. Overall, our results emphasize increased variability incurs costs may reduce reserves thus affect amphibian health survival. This pose serious threat breeding adults have subsequent effects population level.

Language: Английский

Citations

0