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Cryptomonas
''Cryptomonas'' is the name-giving genus of the cryptomonads. It is common in freshwater habitats and often forms blooms in greater depths of lakes, or during winter beneath the ice. The cells are usually brownish in color, and have a slit-like furrow at the anterior. They are not known to produce any toxins and are used to feed small zooplankton, which is the food source for small fish in fish farming. In fact, the zooplankton, Ceriodaphnia quadrangula, feeds specifically on Cryptomonas erosa and nothing else.〔https://microbewiki.kenyon.edu/index.php/Cryptomonas〕 Many species of Crytomonas can only be identified by their molecular signatures.〔http://tolweb.org/Cryptomonas/97214〕 Cryptomonas can be found in several marine ecosystems in Australia.
Cryptomonas is a dimorphic genus, meaning it could be either protozoan (Cryptomondida) or alga (Cryptophyceae).〔 Currently there are 26 species of Cryptomonas.〔http://bie.ala.org.au/species/urn:lsid:catalogueoflife.org:taxon:d7938030-29c1-102b-9a4a-00304854f820:col20120124#tab_classification〕
==Genome Structure==
This genus was originally separated into three different genera (Cryptomonas, Campylomonas, and Chilomonas), but after further investigation Campylomonas and Chilomonas were reclassified as a dimorphism under Cryptomonas. Species within Cryptomonas contain four genomes: the nucleus, the nucleomorph, the plastid, and mitochondrial genomes. The plastid genome contains 118 kilobase pairs and is a result of a phage from red alga, which is why Cryptomonas often has a red coloring.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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