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Moina
''Moina'' is a genus of crustaceans within the family Moinidae. The genus was first described by W. Baird in 1850. They are referred to as water fleas but are smaller than their more well-known cousins: the larger daphnia magna and the medium-sized daphnia pulex.〔(BOLD Systems: ''Moina - Arthropoda; Branchiopoda; Diplostraca; Moinidae;'' )〕 This genus demonstrates the ability to survive in waters containing low oxygen levels as well as high salinity and other impurities, including salt pans, and commonly eutrophication.〔(Biota Neotropica, vol.13 no.3 Campinas July/Sept. 2013 Epub 2013: ''Distribution and biological aspects of the introduced species Moina macrocopa (Straus, 1820) (Crustacea, Cladocera) in the semi-arid central region of Argentina'' )〕 An example of such an extreme habitat is the highly saline Makgadikgadi Pans of Botswana, which supports the species ''Moina belli'' prolifically. ==Species== ''Moina'' contains the following species:〔 *''Moina affinis'' Birge, 1893 *''Moina australiensis'' Sars, 1896 *''Moina belli'' Gurney, 1904 *''Moina brachiata'' (Jurine, 1820) *''Moina brachycephala'' Goulden, 1968 *''Moina flexuosa'' Sars, 1897 *''Moina hartwigi'' Welter, 1898 *''Moina hutchinsoni'' Brehm, 1937 *''Moina macrocopa'' (Straus, 1820) *''Moina micrura'' Kurz, 1874 *''Moina minuta'' Hansen, 1899 *''Moina mongolica'' Daday, 1901 *''Moina rectirostris'' (Leydig, 1860) *''Moina reticulata'' (Daday, 1905) *''Moina salina'' Daday, 1888 *''Moina tenuicornis'' Sars, 1896 *''Moina weismanni'' Ishikawa, 1897 *''Moina wierzejskii'' Richard, 1895
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