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Olindiidae
Olindiidae is a family of hydrozoans in the order Limnomedusae. They have a polyp (zoology), polyp phase and a Jellyfish, 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. In the largest species, 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 Asexual reproduction, 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 ''Craspedacusta sowerbii, C. sowerbii'') and ''Limnocnida'', are found in fresh water.Didžiulis, Viktoras: Craspe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olindiidae
Olindiidae is a family of hydrozoans in the order Limnomedusae. They have a polyp (zoology), polyp phase and a Jellyfish, 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. In the largest species, 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 Asexual reproduction, 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 ''Craspedacusta sowerbii, C. sowerbii'') and ''Limnocnida'', are found in fresh water.Didžiulis, Viktoras: Craspe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olindias Formosa
The flower hat jelly (''Olindias formosus'') is a species of hydromedusa in the hydrozoan family Olindiidae. Although they look like a jellyfish, they actually belong in the class Hydrozoa, while true jellyfish belong in class Scyphozoa. Flower hat jellies occur in the northwestern Pacific off central and southern Japan, and South Korea's Jeju Island.Patry, W.; T. Knowles; L. Christianson; M. Howard (2014). The hydroid and early medusa stage of Olindias formosus (Cnidaria, Hydrozoa, Limnomedusae). Journal of the Marine Biological Association of the United Kingdom 94(7): 1409–1415. (close relatives live elsewhere, like '' O. sambaquiensis'' found off Argentina and Brazil).Resgalla Junior, C.; A.L. Rosseto; V. Haddad Jr (2011). Report of an outbreak of stings caused by Olindias sambaquiensis Muller, 1861 (Cnidaria: hydrozoa) in Southern Brazil. Braz. j. oceanogr. 59(4). The adult form of the flower hat jelly only lives a few months and is typically seen from December to July ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Craspedacusta
''Craspedacusta'' is a genus of freshwater hydrozoans in the family Olindiidae. Species The following species are recognized in the genus ''Craspedacusta'': * '' Craspedacusta brevinema'' He & Xu, 2002 * '' Craspedacusta chuxiongensis'' He, Xu & Nie, 2000 * '' Craspedacusta hangzhouensis'' He, 1980 * '' Craspedacusta iseanum'' (Oka & Hara, 1922) * '' Craspedacusta kuoi'' Shieh & Wang, 1959 * '' Craspedacusta sichuanensis'' He & Kou, 1984 * '' Craspedacusta sinensis'' Gaw & Kung, 1939 * ''Craspedacusta sowerbii ''Craspedacusta sowerbii'' or peach blossom jellyfish is a species of freshwater hydrozoan jellyfish, or hydromedusa cnidarian. Hydromedusan jellyfish differ from scyphozoan jellyfish because they have a muscular, shelf-like structure called ...'' Lankester, 1880 * '' Craspedacusta vovasi'' Naumov & Stepanjants, 1971 * '' Craspedacusta xinyangensis'' He, 1980 * '' Craspedacusta ziguiensis'' He & Xu, 1985 References Olindiidae Hydrozoan genera {{Hydr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vallentinia
''Vallentinia'' is a genus of hydrozoans in the family Olindiidae Olindiidae is a family of hydrozoans in the order Limnomedusae. They have a polyp (zoology), polyp phase and a Jellyfish, medusa phase. The polyps are generally small (1 mm) and solitary, but a few species are colonial. They have a varying .... Species The World Register of Marine Species currently lists the following species: * '' Vallentinia adherens'' Hyman, 1947 * '' Vallentinia falklandica'' Browne, 1902 * '' Vallentinia gabriellae'' Vannucci Mendes, 1948 References Olindiidae Hydrozoan genera {{Hydrozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scolionema (hydrozoan)
''Scolionema'' is a genus of hydrozoans belonging to the family Olindiidae Olindiidae is a family of hydrozoans in the order Limnomedusae. They have a polyp (zoology), polyp phase and a Jellyfish, medusa phase. The polyps are generally small (1 mm) and solitary, but a few species are colonial. They have a varying .... Species: *'' Scolionema sanshin'' *'' Scolionema suvaense'' References Olindiidae Hydrozoan genera {{Hydrozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maeotias
''Maeotias'' is a genus of hydrozoans in the family Olindiidae. It is a monotypic genus with only a single species, ''Maeotias marginata'', commonly known as the Black Sea jellyfish or brackish water hydromedusa and often referred to as ''Maeotias inexpectata'' in the literature. It was first described from the Don and Kuban estuaries of the Sea of Azov (which was called the Lake of Maeotis in antiquity), and also occurs in the Black Sea, all of which are areas of low salinity. It has been recorded in several other estuarine locations around the world and is regarded as an invasive species. Description ''M. marginata'' has a small medusa with a bell diameter of up to . It is hemispherical in shape and the gonads hang from the four distinctive radial canals. The marginal ring canal has 50 short centripetal canals branching from it with a dense marginal fringe of about 600 short trailing tentacles. This hydrozoan is opaque white with a slightly reddish tinge near the bell margin. D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gossea (hydrozoan)
''Gossea'' is a genus of hydrozoans belonging to the family Olindiidae Olindiidae is a family of hydrozoans in the order Limnomedusae. They have a polyp (zoology), polyp phase and a Jellyfish, medusa phase. The polyps are generally small (1 mm) and solitary, but a few species are colonial. They have a varying .... The species of this genus are found in Europe and America. Species: *'' Gossea brachymera'' *'' Gossea corynetes'' *'' Gossea faureae'' *'' Gossea indica'' References Olindiidae Hydrozoan genera {{Hydrozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limnocnida
''Limnocnida'' is a genus of hydrozoans belonging to the family Olindiidae. The species of this genus are found in Southern Africa. Species: *''Limnocnida biharensis ''Limnocnida'' is a genus of hydrozoans belonging to the family Olindiidae. The species of this genus are found in Southern Africa. Species: *''Limnocnida biharensis'' *''Limnocnida congoensis'' *''Limnocnida indica'' *''Limnocnida nepalensi ...'' *'' Limnocnida congoensis'' *'' Limnocnida indica'' *'' Limnocnida nepalensis'' *'' Limnocnida tanganjicae'' *'' Limnocnida victoriae'' References Olindiidae Hydrozoan genera {{Hydrozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olindias
''Olindias'' is a genus of hydrozoans in the family Olindiidae. Characteristics Members of the genus ''Olindias'' have a dome-shaped bell, four radial canals and many centripetal canals. The gonads are beside the radial canals and have characteristic papilliform processes. There are a few primary tentacles growing part way down the bell with adhesive suckers and cnidocytes in bands. There are a pair of statocysts adjoining the base of each primary tentacle. There are a much larger number of short marginal tentacles with rings of cnidocytes for immobilising prey. Between these tentacles there are a number of club-shaped processes which may develop into tentacles. Marine Species Identification Portal. Retrieved 2011-12-08. Species The World Register of Marine Species currently ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gonionemus
''Gonionemus'' is a genus of hydrozoans that uses adhesive discs near the middle of each tentacle to attach to eelgrass, sea lettuce, or various types of algae instead of swimming. They are small (bell diameter to 25 mm) and hard to see when hanging onto swaying seaweed. Nevertheless, they are capable of swimming when necessary. The bell is transparent, revealing the four orange to yellowish-tan gonads that lie along most of the length of the four radial canals. The pale yellow manubrium has four short, frilly lips. Up to 80 tentacles line the bell margin, with about an equal number of statocysts. Copepod Copepods (; meaning "oar-feet") are a group of small crustaceans found in nearly every freshwater and saltwater habitat (ecology), habitat. Some species are planktonic (inhabiting sea waters), some are benthos, benthic (living on the ocean floor) ...s are a favored prey. This marine hydrozoan is common in warmer waters. The conspicuous stage in the dimorphic lifecycle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Craspedacusta Sowerbii
''Craspedacusta sowerbii'' or peach blossom jellyfish is a species of freshwater hydrozoan jellyfish, or hydromedusa cnidarian. Hydromedusan jellyfish differ from scyphozoan jellyfish because they have a muscular, shelf-like structure called a velum on the ventral surface, attached to the bell margin. Originally from the Yangtze basin in China, ''C. sowerbii'' is an invasive species now found throughout the world in bodies of fresh water. Form ''C. sowerbii'' medusae are about 20–25 mm (approximately 1 in.) in diameter, somewhat flatter than a hemisphere, and very delicate, when fully grown. They have a whorl of up to 400 tentacles tightly packed around the bell margin. Hanging down from the center of the inside of the bell is a large stomach structure called a manubrium, with a mouth-opening with four frilly lips. Circulation of nutrients is facilitated by four radial canals which originate at the edges of the stomach (manubrium), and which are also connected to a rin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limnomedusae
Limnomedusae is an order of hydrozoans. Taxonomy The taxon was erected by Danish marine biologist Paul Lassenius Kramp in 1938 to accommodate certain families of hydrozoans with biphasic life histories. It includes genera with medusae with ecto-endodermal statocysts and with gonads alongside their radial canals, and also genera which have polyps that are not covered by a theca. Molecular analysis performed by Collins in 2006 has since shown that the Limnomedusae are not monophylic. The family Armorhydridae, which contains a single genus and a single species, '' Armorhydra janowiczi'', is found living in coarse sediment, has hollow tentacles and has no radial canals. It seems to share few morphological features with the other families and probably belongs elsewhere. The inclusion of Microhydrulidae is also dubious. The medusa stage is not known and the tiny polyp has no tentacles nor mouth. Systematic list The World Register of Marine Species currently lists the following fa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
