Monognathus, or onejaw, is the only genus of the family Monognathidae of deep-seaeels. The name comes from the Greekmonos meaning “one” and gnathos meaning “jaw”, a reference to the large mouth in comparison with the rest of the fish, and also the absence of an upper jaw (maxilla and premaxilla bones are absent).[1]
The dorsal and anal fins lack bony supports and the pectoral fins are missing. The snout has a fang connected to glands, which are venomous in adults.[2] These eels are virtually blind, with rudimentary eyes and small olfactory organs, although the male olfactory organs are enlarged, perhaps suggesting a method of "sniffing out" a mate.[1]
Typical lengths are from 4 to 10 cm (1.5–4 in), the maximum length recorded is 15.9 cm (6.3 in).
Distributionedit
They are found at depths of over 2,000 m (6,600 ft), and are found in all oceans.[3][1]
^ abcBÖHLKE, EUGENIA B.; BÖHLKE, JAMES E.; LEIBY, MARK M.; McCOSKER, JOHN E.; BERTELSEN, E.; ROBINS, CATHERINE H.; ROBINS, C. RICHARD; SMITH, DAVID G.; TIGHE, KENNETH A. (1989). Orders Anguilliformes and Saccopharyngiformes: Part 9, Volume 1. Yale University Press. ISBN978-1-933789-19-4. JSTOR j.ctvbcd0dm.
^Poulsen, Jan Y.; Miller, Michael J.; Sado, Tetsuya; Hanel, Reinhold; Tsukamoto, Katsumi; Miya, Masaki (2018-07-25). "Resolving deep-sea pelagic saccopharyngiform eel mysteries: Identification of Neocyema and Monognathidae leptocephali and establishment of a new fish family "Neocyematidae" based on larvae, adults and mitogenomic gene orders". PLOS ONE. 13 (7): e0199982. Bibcode:2018PLoSO..1399982P. doi:10.1371/journal.pone.0199982. ISSN 1932-6203. PMC6059418. PMID 30044814.
^ abFroese, Rainer, and Daniel Pauly, eds. (2011). "Monognathidae" in FishBase. June 2011 version.
monognathus, onejaw, only, genus, family, monognathidae, deep, eels, name, comes, from, greek, monos, meaning, gnathos, meaning, reference, large, mouth, comparison, with, rest, fish, also, absence, upper, maxilla, premaxilla, bones, absent, jesperseniscientif. Monognathus or onejaw is the only genus of the family Monognathidae of deep sea eels The name comes from the Greek monos meaning one and gnathos meaning jaw a reference to the large mouth in comparison with the rest of the fish and also the absence of an upper jaw maxilla and premaxilla bones are absent 1 MonognathusM jesperseniScientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClass ActinopterygiiOrder AnguilliformesFamily MonognathidaeGenus MonognathusBertin 1936Species15 see text Contents 1 Description 2 Distribution 3 Species 4 ReferencesDescription editThe dorsal and anal fins lack bony supports and the pectoral fins are missing The snout has a fang connected to glands which are venomous in adults 2 These eels are virtually blind with rudimentary eyes and small olfactory organs although the male olfactory organs are enlarged perhaps suggesting a method of sniffing out a mate 1 Typical lengths are from 4 to 10 cm 1 5 4 in the maximum length recorded is 15 9 cm 6 3 in Distribution editThey are found at depths of over 2 000 m 6 600 ft and are found in all oceans 3 1 Species editThe fifteen known species are 3 Monognathus ahlstromi Raju 1974 Paddletail onejaw Monognathus berteli J G Nielsen amp Hartel 1996 Monognathus bertini Bertelsen amp J G Nielsen 1987 Monognathus boehlkei Bertelsen amp J G Nielsen 1987 Monognathus bruuni Bertin 1936 Monognathus herringi Bertelsen amp J G Nielsen 1987 Monognathus isaacsi Raju 1974 Monognathus jesperseni Bertin 1936 Monognathus jesse Raju 1974 Monognathus nigeli Bertelsen amp J G Nielsen 1987 Monognathus ozawai Bertelsen amp J G Nielsen 1987 Monognathus rajui Bertelsen amp J G Nielsen 1987 Monognathus rosenblatti Bertelsen amp J G Nielsen 1987 Monognathus smithi Bertelsen amp J G Nielsen 1987 Monognathus taningi Bertin 1936 References edit a b c BOHLKE EUGENIA B BOHLKE JAMES E LEIBY MARK M McCOSKER JOHN E BERTELSEN E ROBINS CATHERINE H ROBINS C RICHARD SMITH DAVID G TIGHE KENNETH A 1989 Orders Anguilliformes and Saccopharyngiformes Part 9 Volume 1 Yale University Press ISBN 978 1 933789 19 4 JSTOR j ctvbcd0dm Poulsen Jan Y Miller Michael J Sado Tetsuya Hanel Reinhold Tsukamoto Katsumi Miya Masaki 2018 07 25 Resolving deep sea pelagic saccopharyngiform eel mysteries Identification of Neocyema and Monognathidae leptocephali and establishment of a new fish family Neocyematidae based on larvae adults and mitogenomic gene orders PLOS ONE 13 7 e0199982 Bibcode 2018PLoSO 1399982P doi 10 1371 journal pone 0199982 ISSN 1932 6203 PMC 6059418 PMID 30044814 a b Froese Rainer and Daniel Pauly eds 2011 Monognathidae in FishBase June 2011 version nbsp This Saccopharyngiformes related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Monognathus amp oldid 1043537196, wikipedia, wiki, book, books, library,
