- Mysis
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Mysis 
Mysis diluviana Scientific classification Kingdom: Animalia Phylum: Arthropoda Subphylum: Crustacea Class: Malacostraca Order: Mysida Family: Mysidae Genus: Mysis
Latreille, 1803Mysis is a genus of mysid crustaceans in the family Mysidae, distributed mainly in the coastal zone of the Arctic and high boreal seas. There are also several species that inhabit northern freshwater lakes and the brackish Caspian Sea. Sixteen species are known.[1][2][3][4] Body lengths range from 1 to 3 centimetres (0.4 to 1.2 in).
The freshwater taxa of the genus have been referred to as "glacial relicts", and they comprise four closely related species, most of which also live in brackish water. Mysis relicta is a freshwater species from boreal lakes of Northern Europe, also present in the Baltic Sea. Mysis salemaai is another North European and Baltic Sea taxon. Mysis segerstralei is a fresh- and brackish-water species of the Eurasian and North American Arctic and sub-Arctic. The North American lakes, including the Great Lakes, are inhabited by Mysis diluviana.
Four endemic species inhabit the Caspian Sea.[1] They have specialized and adapted to the cold, deepwater habitats of the landlocked basin. For example, the bathyal M. amblyops, the smallest mysid in the genus, has reduced eyes.[5][6] Four species also have circum-arctic distributions (M. oculata, M. nordenskioldi, M. segerstralei, M. polaris).[1]
Generic characters: frontal margin of carapace convex, angular; antennal scale with setae around all margins, segment 2 of maxilla 2 palp large, axe-shaped, with strong serrated spine-setae; pereiopods long, carpopropodus 7–9-segmented; male pleopod 4 5-segmented, segment 4 as long as segment 3; telson with cleft.
Species
- Mysis amblyops G. O. Sars, 1907
- Mysis arcticoglacialis Petryashev, 1990
- Mysis caspia G. O. Sars, 1895
- Mysis diluviana Audzijonyte & Väinölä, 2005
- Mysis gaspensis O. Tattersall, 1954
- Mysis litoralis (Banner, 1948)
- Mysis macrolepis G. O. Sars, 1907
- Mysis microphthalma G. O. Sars, 1895
- Mysis mixta Lilljeborg, 1853
- Mysis nordenskioldi Audzijonyte & Väinölä, 2007
- Mysis oculata (Fabricius, 1780)
- Mysis polaris Holmquist, 1859)
- Mysis relicta Lovén, 1862
- Mysis salemaai Audzijonyte & Väinölä, 2005
- Mysis segerstralei Audzijonyte & Väinölä, 2005
- Mysis stenolepis Smith, 1873
References
- ^ a b c A. Audzijonyte, J. Damgaard, S.-L. Varvio, J. K. Vainio & R. Väinölä (2005). "Phylogeny of Mysis (Crustacea, Mysida): history of continental invasions inferred from molecular and morphological data". Cladistics 21 (6): 575–596. doi:10.1111/j.1096-0031.2005.00081.x.
- ^ A. Audzijonyte & R. Väinölä (2007). "Mysis nordenskioldi n. sp. (Crustacea, Mysida), a circumpolar coastal mysid separated from the NE Pacific M. litoralis (Banner, 1948)". Polar Biology 30 (9): 1137–1157. doi:10.1007/s00300-007-0271-5.
- ^ A. Audzijonyte & R. Väinölä (2005). "Diversity and distributions of circumpolar fresh- and brackish-water Mysis (Crustacea: Mysida): descriptions of M. relicta Lovén, 1862, M. salemaai n. sp., M. segerstralei n. sp. and M. diluviana n. sp., based on molecular and morphological characters". Hydrobiologia 544 (1): 89–141. doi:10.1007/s10750-004-8337-7.
- ^ Jan Mees (2011). "Mysis Latreille, 1802". In T. Deprez et al.. NeMys. World Register of Marine Species. http://www.marinespecies.org/aphia.php?p=taxdetails&id=119886. Retrieved November 6, 2011.
- ^ Georg Ossian Sars (1895). "Crustacea Caspia. Account on the Mysidae in the collection of Dr. Grimm". Bulletin Academii Imperii Scientorum St. Petersbourg 5.
- ^ Georg Ossian Sars (1907). "Mysidae". Trudy Kaspiiskoi Ekspeditsii 1904 Goda 1: 243–313.
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