Eukrohniidae is a
family
Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...
of
sagittoidea
The Chaetognatha or chaetognaths (meaning ''bristle-jaws'') are a phylum of predatory marine worms that are a major component of plankton worldwide. Commonly known as arrow worms, they are mostly pelagic; however about 20% of the known species ...
ns in the
order
Order, ORDER or Orders may refer to:
* A socio-political or established or existing order, e.g. World order, Ancien Regime, Pax Britannica
* Categorization, the process in which ideas and objects are recognized, differentiated, and understood
...
Phragmophora
Phragmophora is an order of sagittoideans in the phylum Chaetognatha.
Families
*Eukrohniidae Tokioka, 1965
*Heterokrohniidae Casanova, 1985Casanova, J. (1985). Description de l'appareil génital primitif du genre ''Heterokrohnia'' et nouvelle c ...
. 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
Karl August Möbius (7 February 1825 in Eilenburg – 26 April 1908 in Berlin) was a German zoologist who was a pioneer in the field of ecology and a director of the Natural History Museum in Berlin.
Early life
Möbius was born in Eilenburg in ...
in 1875. The
genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
was named ''Eukrohnia'' by
R. von Ritter-Záhony in 1909 after
August David Krohn August David Krohn (1803–1891) was a Saint Petersburg born zoologist of German origin. He was the son of Abraham Krohn, the founder of Russia's first brewery, who had left the island of Rügen to serve in the court of Catherine the Great. He wa ...
. 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, 1958[David, P. (1958). A new species of ''Eukrohnia'' from the southern Ocean with a note on fertilization. ''Proceedings of the Zoological Society of London'', 131(4), 597–606.]
*'' Eukrohnia bathypelagica'' Alvariño, 1962[Alvariño, A. (1962). Two new Pacific chaetognaths, their distribution and relationship to allied species. ''Bulletin of the Scripps Institution of Oceanography'', 8(1), 1–50.]
*'' Eukrohnia calliops'' McLelland, 1989[McLelland, J. A. (1989). ''Eukrohnia calliops'', a new species of Chaetognatha from the northern Gulf of Mexico with notes on related species. ''Proceedings of the Biological Society of Washington'', 102(1), 33–44.]
*'' Eukrohnia flaccicoeca'' Casanova, 1986[Casanova, J. P. (1986). Deux nouvelles espe/'ces dEukrohnia'' (Chaetognathes) de l'Atlantique sudtropical africain. ''Bulletin de Muse'um National d'Histoire Naturelle, Paris'', 4(8), 819–833.]
*'' Eukrohnia fowleri'' von Ritter-Záhony, 1909[
*'' Eukrohnia hamata'' (Möbius, 1875)][Möbius, K. (1875). Vermes. ''Jahresbericht der Commission zur wissenschaftlichen Untersuchung der deutschen Meere in Kiel für die Jahre 1872, 1873'', 2, 153–170.]
*'' Eukrohnia kitoui'' Kuroda, 1981[Kuroda, K. (1981). A new chaetognath, ''Eukrohnia kitoui'' n. sp., from the entrance to Tokyo Bay. ''Publications of the Seto Marine Biological Laboratory'', 26(1), 177–185.]
*'' Eukrohnia macroneura'' Casanova, 1986[
*'' Eukrohnia minuta'' Silas & Srinivasan, 1969][Silas, E. & Srinivasan, M. (1969). A new species of ''Eukrohnia'' from the Indian Seas with notes on three other species of Chaetognatha. ''Journal of the Marine Biological Association of India'', 10, 1–33.]
*'' Eukrohnia proboscidea'' Furnestin & Ducret, 1965[Furnstein, M. & Ducret, F. (1965). ''Eukrohnia proboscidea'', nouvelle espèce de Chaetognaths. ''Revue des Travaux de l'Institut des Pêches Maritimes'', 29(3), 271–273.]
*'' Eukrohnia sinica'' Zhang & Chen, 1983
References
Chaetognatha
Monogeneric protostome families
{{Chaetognatha-stub