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Lubomirskia baicalensis
''Lubomirskia baicalensis'' is a freshwater demosponge that is found at depths between in Lake Baikal, Russia.〔Kaluzhnaya; Belikov; Schröder; Rothenberger; Zapf; Kaandorp; Borejko; Müller; and Müller (2005). ''Dynamics of skeleton formation in the Lake Baikal sponge Lubomirskia baicalensis. Part I. Biological and biochemical studies.'' Naturwissenschaften 92: 128–133.〕 It is commonly called Lake Baikal sponge and it is the most abundant sponge in the lake, but all 14 species in the family Lubomirskiidae are Baikal endemics.〔Paradina; Kulikova; Suturin; and Saibatalova (2003). ''The Distribution of Chemical Elements in Sponges of the Family Lubomirskiidae in Lake Baikal.'' International Symposium - Speciation in Ancient Lakes, SIAL III - Irkutsk 2002. Berliner Paläobiologische Abhandlungen 4: 151-157.〕 This sponge is in mutual symbiosis with a green dinoflagellate, making it green in appearance. Okadaic acid produced by the dinoflagellate assists the sponge to survive when Lake Baikal is iced over in winter, and the water temperature is close to .〔 ''L. baicalensis'' can grow to a large size for a freshwater sponge, reaching a height of more than in some locations.〔Belikov; Kaluzhnaya; Schröder; Müller; and Müller (2007). ''Lake Baikal endemic sponge Lubomirskia baikalensis: structure and organization of the gene family of silicatein and its role in morphogenesis.'' Porifera Research: Biodiversity, Innovation and Sustainability, pp. 179-188.〕 It takes 1 year for it to grow taller.
==References==
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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