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- Title
HSP70 expression in the Copper butterfly Lycaena tityrus across altitudes and temperatures.
- Authors
KARL, I.; SØRENSEN, J. G.; LOESCHCKE, V.; FISCHER, K.
- Abstract
The ability to express heat-shock proteins (HSP) under thermal stress is an essential mechanism for ectotherms to cope with unfavourable conditions. In this study, we investigate if Copper butterflies originating from different altitudes and/or being exposed to different rearing and induction temperatures show differences in HSP70 expression. HSP70 expression increased substantially at the higher rearing temperature in low-altitude butterflies, which might represent an adaptation to occasionally occurring heat spells. On the other hand, high-altitude butterflies showed much less plasticity in response to rearing temperatures, and overall seem to rely more on genetically fixed thermal stress resistance. Whether the latter indicates a higher vulnerability of high-altitude populations to global warming needs further investigation. HSP70 expression increased with both colder and warmer induction temperatures.
- Subjects
LYCAENA; GENE expression; COLD-blooded animals; HEAT shock proteins; PHYSIOLOGICAL effects of temperature; BIOLOGICAL adaptation; BIOLOGICAL variation; BIOLOGICAL evolution; BIOLOGY
- Publication
Journal of Evolutionary Biology, 2009, Vol 22, Issue 1, p172
- ISSN
1010-061X
- Publication type
Article
- DOI
10.1111/j.1420-9101.2008.01630.x