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- Title
Artificial thermal gradients alter the distribution of Daphnia mendotae genotypes.
- Authors
Yorks, Rosalina M.; Roy Chowdhury, Priyanka; Jeyasingh, Punidan D.
- Abstract
Previous work on Daphnia found that phosphoglucose isomerase (Pgi) homozygotes produced a more thermally stable form of the enzyme compared with heterozygotes. We found a positive relationship between temperature and homozygote frequency in a cooling reservoir with strong thermal gradients. Laboratory experiments revealed that heterozygotes had lower thermal tolerance. Integrating existing information about biochemical properties of Pgi, and data from thermal tolerance assays helped explain the population genetic consequences of temperature shifts in this lake.
- Subjects
DAPHNIA; GLUCOSE phosphate isomerase; GENETIC carriers; POPULATION genetics; WATER temperature; COMPARATIVE studies; PHYSIOLOGY
- Publication
Journal of Plankton Research, 2014, Vol 36, Issue 1, p276
- ISSN
0142-7873
- Publication type
Article
- DOI
10.1093/plankt/fbt108