Daphnia galeata explained

Daphnia galeata is a small species of planktonic crustaceans. It lives in freshwater environments across a large area of the Northern Hemisphere, mostly in lakes.

D. galeata comprises two subspecies: D. g. galeata, found in the Old World, and D. g. mendotae, named after Lake Mendota near Madison, Wisconsin, in the New World. D. g. mendotae may be a homoploid hybrid taxon.^[1] In the lower Great Lakes, the populations are mostly hybrids of the European and American subspecies.^[2]

Notes and References

1. Derek J. Taylor, Paul D. N. Herbert & John K. Colbourne . 1996 . Phylogenetics and evolution of the Daphnia longispina group (Crustacea) based on 12S rDNA sequence and allozyme variation . . 5 . 3 . 495–510 . 10.1006/mpev.1996.0045 . 8744763 .
2. Book: Northern temperate lakes: chaos along the food chain . 67–81 . George W. Cox . 1999 . Alien Species in North America and Hawaii: Impacts on Natural Ecosystems . . 9781559636803 . registration .