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Olindiidae
The Olindiidae are a family of jellyfish in the order Limnomedusae. They have a polyp phase and a medusa phase. The polyps are generally small (1 mm) and solitary, but a few species are colonial. They have a varying number of tentacles and can reproduce by budding. The medusae can grow to . Centripetal canals may be present or absent and the radial canals are unbranched. The gonads are beside the radial canals, except in ''Limnocnida'', where they are on the manubrium. The fertilised eggs develop into planula larvae which become polyps. These multiply asexually or can bud off medusae. In some species, medusae are only produced when the water temperature exceeds a certain level. Most species are marine, but several can also be found in brackish water and a few, notably ''Craspedacusta'' (such as ''C. sowerbii'') and ''Limnocnida'', are found in fresh water.〔Didžiulis, Viktoras: ''(Craspedacusta sowerbyi. )'' NOBANIS - Invasive Alien Species Fact Sheet. Retrieved 22 September 2014.〕〔Salonen; Högmander; Langenberg; Mölsä; Sarvala; Tarvainen; and Tiirola (2012). ''Limnocnida tanganyicae medusae (Cnidaria: Hydrozoa): a semiautonomous microcosm in the food web of Lake Tanganyika.'' Hydrobiologia 690(1): 97-112.〕
==Taxonomy==
This family is named after its type genus ''Olindias'', Muller 1861, but with confusion about the correct spelling, with Olindiadae, Olindiidae, Olindiadidae and Olindiasidae all being used. Haeckel established the family in 1879 as Olindiadae, but his intentions as to the stem of the genus and hence the name of the family are unclear. Calder in 2010 determined that Olindiidae was the correct form.〔
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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