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Eukrohnia Flaccicoeca
Eukrohniidae is a family of sagittoideans in the order Phragmophora. It consists of a single genus, ''Eukrohnia'' von Ritter-Záhony, 1909.von Ritter-Za'hony, R. (1909). Die Chaetognathen der Gazelle-Expedition. ''Zoologischer Anzeiger'', 34, 787–793. History The first species of Eukrohniidae, ''Eukrohnia hamata'', was identified by Karl Möbius in 1875. The genus was named ''Eukrohnia'' by R. von Ritter-Záhony in 1909 after August David Krohn. The family was named ''Eukrohniidae'' by Takasi Tokioka in 1965. One of the species, ''Eukrohnia fowleri'', is bioluminescent.Thuesen, E. V., Goetz, F. E. & Haddock, S. H. (2010). Bioluminescent organs of two deep-sea arrow worms, ''Eukrohnia fowleri'' and ''Caecosagitta macrocephala'', with further observations on bioluminescence in chaetognaths. ''Biological Bulletin'', 219(2), 100–111. Species *'' Eukrohnia bathyantarctica'' David, 1958David, P. (1958). A new species of ''Eukrohnia'' from the southern Ocean with a note on fertili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Takasi Tokioka
was a Japanese zoologist. He published over 200 scientific articles on marine animals such as chaetognaths, ctenophores, and tunicates. He was Professor of Zoology at Kyoto University working at the Seto Marine Biological Laboratory in Shirahama, Japan. From 1975 to 1977, he was the Director of SMBL. Eponymous species At least a dozen species are named in his honor,Biographical Etymology of Marine Organism Names http://www.tmbl.gu.se/libdb/taxon/personetymol/petymol.tu.html including these below. *''Acartia tokiokai'' Mori, 1942 - Copepoda *''Atlanta tokiokai'' van der Spoel & Troost, 1972 - Heteropoda *''Bolivina tokiokai'' Uchio, 1962 - Formanifera *''Eudistoma tokiokai'' Nishikawa, 1990 - Ascidiacea *''Euchromadora tokiokai'' Wieser, 1955 - Nematoda *''Krohnittella tokiokai'' Bieri, 1974 - Chaetognatha *''Ophiocentrus tokiokai'' Irimura, 1981 - Ophiuroidea *''Polycarpa tokiokai'' Monniot & Monniot, 1996 - Ascidiacea *''Styela tokiokai'' Nishikawa, 1991 - Ascidiacea Ascid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eukrohnia Calliops
Eukrohniidae is a family of sagittoideans in the order Phragmophora. It consists of a single genus, ''Eukrohnia'' von Ritter-Záhony, 1909.von Ritter-Za'hony, R. (1909). Die Chaetognathen der Gazelle-Expedition. ''Zoologischer Anzeiger'', 34, 787–793. History The first species of Eukrohniidae, ''Eukrohnia hamata'', was identified by Karl Möbius in 1875. The genus was named ''Eukrohnia'' by R. von Ritter-Záhony in 1909 after August David Krohn. The family was named ''Eukrohniidae'' by Takasi Tokioka in 1965. One of the species, ''Eukrohnia fowleri'', is bioluminescent.Thuesen, E. V., Goetz, F. E. & Haddock, S. H. (2010). Bioluminescent organs of two deep-sea arrow worms, ''Eukrohnia fowleri'' and ''Caecosagitta macrocephala'', with further observations on bioluminescence in chaetognaths. ''Biological Bulletin'', 219(2), 100–111. Species *'' Eukrohnia bathyantarctica'' David, 1958David, P. (1958). A new species of ''Eukrohnia'' from the southern Ocean with a note on fertili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eukrohnia Sinica
Eukrohniidae is a family of sagittoideans in the order Phragmophora. It consists of a single genus, ''Eukrohnia'' von Ritter-Záhony, 1909.von Ritter-Za'hony, R. (1909). Die Chaetognathen der Gazelle-Expedition. ''Zoologischer Anzeiger'', 34, 787–793. History The first species of Eukrohniidae, ''Eukrohnia hamata'', was identified by Karl Möbius in 1875. The genus was named ''Eukrohnia'' by R. von Ritter-Záhony in 1909 after August David Krohn. The family was named ''Eukrohniidae'' by Takasi Tokioka in 1965. One of the species, ''Eukrohnia fowleri'', is bioluminescent.Thuesen, E. V., Goetz, F. E. & Haddock, S. H. (2010). Bioluminescent organs of two deep-sea arrow worms, ''Eukrohnia fowleri'' and ''Caecosagitta macrocephala'', with further observations on bioluminescence in chaetognaths. ''Biological Bulletin'', 219(2), 100–111. Species *'' Eukrohnia bathyantarctica'' David, 1958David, P. (1958). A new species of ''Eukrohnia'' from the southern Ocean with a note on fertili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eukrohnia Proboscidea
Eukrohniidae is a family of sagittoideans in the order Phragmophora. It consists of a single genus, ''Eukrohnia'' von Ritter-Záhony, 1909.von Ritter-Za'hony, R. (1909). Die Chaetognathen der Gazelle-Expedition. ''Zoologischer Anzeiger'', 34, 787–793. History The first species of Eukrohniidae, ''Eukrohnia hamata'', was identified by Karl Möbius in 1875. The genus was named ''Eukrohnia'' by R. von Ritter-Záhony in 1909 after August David Krohn. The family was named ''Eukrohniidae'' by Takasi Tokioka in 1965. One of the species, ''Eukrohnia fowleri'', is bioluminescent.Thuesen, E. V., Goetz, F. E. & Haddock, S. H. (2010). Bioluminescent organs of two deep-sea arrow worms, ''Eukrohnia fowleri'' and ''Caecosagitta macrocephala'', with further observations on bioluminescence in chaetognaths. ''Biological Bulletin'', 219(2), 100–111. Species *'' Eukrohnia bathyantarctica'' David, 1958David, P. (1958). A new species of ''Eukrohnia'' from the southern Ocean with a note on fertili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eukrohnia Minuta
Eukrohniidae is a family of sagittoideans in the order Phragmophora. It consists of a single genus, ''Eukrohnia'' von Ritter-Záhony, 1909.von Ritter-Za'hony, R. (1909). Die Chaetognathen der Gazelle-Expedition. ''Zoologischer Anzeiger'', 34, 787–793. History The first species of Eukrohniidae, ''Eukrohnia hamata'', was identified by Karl Möbius in 1875. The genus was named ''Eukrohnia'' by R. von Ritter-Záhony in 1909 after August David Krohn. The family was named ''Eukrohniidae'' by Takasi Tokioka in 1965. One of the species, ''Eukrohnia fowleri'', is bioluminescent.Thuesen, E. V., Goetz, F. E. & Haddock, S. H. (2010). Bioluminescent organs of two deep-sea arrow worms, ''Eukrohnia fowleri'' and ''Caecosagitta macrocephala'', with further observations on bioluminescence in chaetognaths. ''Biological Bulletin'', 219(2), 100–111. Species *'' Eukrohnia bathyantarctica'' David, 1958David, P. (1958). A new species of ''Eukrohnia'' from the southern Ocean with a note on fertili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eukrohnia Macroneura
Eukrohniidae is a family of sagittoideans in the order Phragmophora. It consists of a single genus, ''Eukrohnia'' von Ritter-Záhony, 1909.von Ritter-Za'hony, R. (1909). Die Chaetognathen der Gazelle-Expedition. ''Zoologischer Anzeiger'', 34, 787–793. History The first species of Eukrohniidae, ''Eukrohnia hamata'', was identified by Karl Möbius in 1875. The genus was named ''Eukrohnia'' by R. von Ritter-Záhony in 1909 after August David Krohn. The family was named ''Eukrohniidae'' by Takasi Tokioka in 1965. One of the species, ''Eukrohnia fowleri'', is bioluminescent.Thuesen, E. V., Goetz, F. E. & Haddock, S. H. (2010). Bioluminescent organs of two deep-sea arrow worms, ''Eukrohnia fowleri'' and ''Caecosagitta macrocephala'', with further observations on bioluminescence in chaetognaths. ''Biological Bulletin'', 219(2), 100–111. Species *'' Eukrohnia bathyantarctica'' David, 1958David, P. (1958). A new species of ''Eukrohnia'' from the southern Ocean with a note on fertili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eukrohnia Kitoui
Eukrohniidae is a family of sagittoideans in the order Phragmophora. It consists of a single genus, ''Eukrohnia'' von Ritter-Záhony, 1909.von Ritter-Za'hony, R. (1909). Die Chaetognathen der Gazelle-Expedition. ''Zoologischer Anzeiger'', 34, 787–793. History The first species of Eukrohniidae, ''Eukrohnia hamata'', was identified by Karl Möbius in 1875. The genus was named ''Eukrohnia'' by R. von Ritter-Záhony in 1909 after August David Krohn. The family was named ''Eukrohniidae'' by Takasi Tokioka in 1965. One of the species, ''Eukrohnia fowleri'', is bioluminescent.Thuesen, E. V., Goetz, F. E. & Haddock, S. H. (2010). Bioluminescent organs of two deep-sea arrow worms, ''Eukrohnia fowleri'' and ''Caecosagitta macrocephala'', with further observations on bioluminescence in chaetognaths. ''Biological Bulletin'', 219(2), 100–111. Species *'' Eukrohnia bathyantarctica'' David, 1958David, P. (1958). A new species of ''Eukrohnia'' from the southern Ocean with a note on fertili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eukrohnia Hamata
Eukrohniidae is a family of sagittoideans in the order Phragmophora. It consists of a single genus, ''Eukrohnia'' von Ritter-Záhony, 1909.von Ritter-Za'hony, R. (1909). Die Chaetognathen der Gazelle-Expedition. ''Zoologischer Anzeiger'', 34, 787–793. History The first species of Eukrohniidae, ''Eukrohnia hamata'', was identified by Karl Möbius in 1875. The genus was named ''Eukrohnia'' by R. von Ritter-Záhony in 1909 after August David Krohn. The family was named ''Eukrohniidae'' by Takasi Tokioka in 1965. One of the species, ''Eukrohnia fowleri'', is bioluminescent.Thuesen, E. V., Goetz, F. E. & Haddock, S. H. (2010). Bioluminescent organs of two deep-sea arrow worms, ''Eukrohnia fowleri'' and ''Caecosagitta macrocephala'', with further observations on bioluminescence in chaetognaths. ''Biological Bulletin'', 219(2), 100–111. Species *'' Eukrohnia bathyantarctica'' David, 1958David, P. (1958). A new species of ''Eukrohnia'' from the southern Ocean with a note on fertili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eukrohnia Fowleri
''Eukrohnia fowleri'' is a deep-sea marine arrow worm. It is the only known bioluminescent member of the genus ''Eukrohnia'', and one of the two known species of bioluminescent arrow worms, the other being the distantly related ''Caecosagitta macrocephala''. The bioluminescent organ of ''Eukrohnia fowleri'' is found along the center of its tail fin on both its dorsal and ventral side. It has a secreted bioluminescence that is thought to be coelenterazine Coelenterazine is a luciferin, a molecule that emits light after reaction with oxygen, found in many aquatic organisms across eight phyla. It is the substrate of many luciferases such as ''Renilla reniformis'' luciferase (Rluc), ''Gaussia'' lucif ... based. While both species use luciferases in conjunction with coelenterazine for light emission, the luciferase of ''Eukrohnia fowleri'' is highly stable after 30 minutes while the luciferase of ''Caecosagitta macrocephala'' becomes inactive. So far, there is no other bioluminescent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eukrohnia Flaccicoeca
Eukrohniidae is a family of sagittoideans in the order Phragmophora. It consists of a single genus, ''Eukrohnia'' von Ritter-Záhony, 1909.von Ritter-Za'hony, R. (1909). Die Chaetognathen der Gazelle-Expedition. ''Zoologischer Anzeiger'', 34, 787–793. History The first species of Eukrohniidae, ''Eukrohnia hamata'', was identified by Karl Möbius in 1875. The genus was named ''Eukrohnia'' by R. von Ritter-Záhony in 1909 after August David Krohn. The family was named ''Eukrohniidae'' by Takasi Tokioka in 1965. One of the species, ''Eukrohnia fowleri'', is bioluminescent.Thuesen, E. V., Goetz, F. E. & Haddock, S. H. (2010). Bioluminescent organs of two deep-sea arrow worms, ''Eukrohnia fowleri'' and ''Caecosagitta macrocephala'', with further observations on bioluminescence in chaetognaths. ''Biological Bulletin'', 219(2), 100–111. Species *'' Eukrohnia bathyantarctica'' David, 1958David, P. (1958). A new species of ''Eukrohnia'' from the southern Ocean with a note on fertili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eukrohnia Bathypelagica
Eukrohniidae is a family of sagittoideans in the order Phragmophora. It consists of a single genus, ''Eukrohnia'' von Ritter-Záhony, 1909.von Ritter-Za'hony, R. (1909). Die Chaetognathen der Gazelle-Expedition. ''Zoologischer Anzeiger'', 34, 787–793. History The first species of Eukrohniidae, ''Eukrohnia hamata'', was identified by Karl Möbius in 1875. The genus was named ''Eukrohnia'' by R. von Ritter-Záhony in 1909 after August David Krohn. The family was named ''Eukrohniidae'' by Takasi Tokioka in 1965. One of the species, ''Eukrohnia fowleri'', is bioluminescent.Thuesen, E. V., Goetz, F. E. & Haddock, S. H. (2010). Bioluminescent organs of two deep-sea arrow worms, ''Eukrohnia fowleri'' and ''Caecosagitta macrocephala'', with further observations on bioluminescence in chaetognaths. ''Biological Bulletin'', 219(2), 100–111. Species *'' Eukrohnia bathyantarctica'' David, 1958David, P. (1958). A new species of ''Eukrohnia'' from the southern Ocean with a note on fertili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |