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Long-term genetic shifts in a microcrustacean egg bank associated with anthropogenic changes in the Lake Constance ecosystem

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons56990

Weider,  Lawrence J.
Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons56790

Lampert,  Winfried
Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons56798

Limburg,  Petra
Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

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Citation

Weider, L. J., Lampert, W., Wessels, M., Colbourne, J. K., & Limburg, P. (1997). Long-term genetic shifts in a microcrustacean egg bank associated with anthropogenic changes in the Lake Constance ecosystem. Proceedings of the Royal Society of London Series B, 264(1388), 1613-1618.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-E20B-8
Abstract
Diapausing egg banks of aquatic zooplankton have the potential to remain viable for decades or even centuries, and can thus harbour potentially high levels of genetic variation. Diapausing (ephippial) eggs from the Daphnia galeata-hyalina complex (Crustacea: Anomopoda) in Lake Constance (Bodensee), Germany, were isolated from sections of dated sediment cores, hatched in the laboratory and established as a clone bank. We used cellulose acetate electrophoresis at four polymorphic enzyme loci (Pgm, Pgi, ao, and Got) to examine long-term temporal changes in the genetic composition of the hatchling pool. Our results indicate that significant shifts have occurred in the genetic structure of this population, which parallel concomitant shifts in the trophic state of Lake Constance during the past 25-35 years. Here we discuss the utility of egg bank propagules as good model organisms to study microevolution, as related to past environmental change