Details

Autor(en) / Beteiligte

• Morgan, Rachael
• Andreassen, Anna H
• Åsheim, Eirik R
• Finnøen, Mette H
• Dresler, Gunnar
• Brembu, Tore
• Loh, Adrian
• Miest, Joanna J
• Jutfelt, Fredrik

Titel

Reduced physiological plasticity in a fish adapted to stable temperatures

Ist Teil von

• Proceedings of the National Academy of Sciences - PNAS, 2022-05, Vol.119 (22), p.e2201919119-e2201919119

Ort / Verlag

United States: National Academy of Sciences

Erscheinungsjahr

2022

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Significance Plastic individuals can buffer environmental changes, maintaining a stable performance across gradients. Plasticity is therefore thought to be particularly beneficial for the survival of wild populations that experience large environmental fluctuations, such as diel and seasonal temperature changes. Maintaining plasticity is widely assumed to be costly; however, empirical evidence demonstrating this cost is scarce. Here, we predict that if plasticity is costly, it would be readily lost in a stable environment, such as a laboratory. To test this, we measured a diverse range of phenotypic traits, spanning gene expression, physiology, and behavior, in wild and laboratory zebrafish acclimated to 15 temperatures. We show that laboratory fish have lost plasticity in many traits, demonstrating that maintaining plasticity carries a cost.