Mysis diluviana
| Mysis diluviana | |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Crustacea |
| Class: | Malacostraca |
| Order: | Mysida |
| Family: | Mysidae |
| Genus: | Mysis |
| Species: | M. diluviana |
| Binomial name | |
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Mysis diluviana Audzijonyte & Väinölä, 2005 |
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Mysis diluviana is a mysid crustacean (opossum shrimp) found in freshwater lakes of northern North America.
Mysis is a small, transparent shrimp-like crustacean, less than 25 mm (1 in) in length. It has two pairs of relatively long antennae, associated with rounded antennal plates; large, stalked compound eyes; the thorax covered by a coat-like carapace; a muscular, cylindrical abdomen; and a tail fan featuring a telson with a V-shaped terminal cleft.
Reproducing females bear a prominent brood pouch (marsupium) between their thoracal legs. The pleopods (abdominal legs) of Mysis are reduced, except for a specialized pair of mating legs in males.
The natural distribution of Mysis diluviana comprises the Great Lakes of North America, and many other coldwater lakes across Canada and in northern parts of the United States, including Wisconsin (e.g. Green Lake, Trout Lake, and Geneva Lake) and northern New York State (e.g. Finger Lakes, Lake Champlain). As it inhabits the areas covered by ice sheets during the last glacial period, the species has been called a glacial relict.
Mysis diluviana has also been transferred to lakes outside its native range, to provide a new fish-food object, e.g. to Lake Tahoe (Nevada, California) and Kootenay Lake (British Columbia).
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Wikipedia