Ilyophinae
| Ilyophinae | |
|---|---|
| |
| Ilyophis brunneus | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Anguilliformes |
| Family: | Synaphobranchidae |
| Subfamily: | Ilyophinae D. S. Jordan & Davis, 1891 |
| Genera | |
|
see text | |
| Synonyms[1] | |
| |
Ilyophinae, the arrowtooth ells or mustard eels, is a subfamily of marine ray-finned fishes belongiing to the family Synaphobranchidae, the cutthroat eels. Within its family this subfamily shows greatest number of species and the greatest morphological diversity.
Taxonomy
[edit]The Ilyophinae was first proposed as the family Ilyophididae in 1891 by the American ichthyologists David Starr Jordan and Bradley Moore Davis, this taxon has also been known as the Dysommidae, or Dysomminae, but this name was proposed by Theodore Gill but Jordan and Davi's name has priority.[2] It is now regarded as a subfamily of the cutthroat eel family, Synaphobranchidae, within the eel order Anguilliformes.[3]
Etymology
[edit]Ilyophinae has a name based on that of its type genus Ilyophis, this name combines ilys which is Greek for "mud", probably an allusion to the soft, silty substrate habitat of I. brunneus, with ophis, meaning "serpent", referring to the snake-like shape of eels.[4]
Genera
[edit]The Ilyophinae contains the following genera:[5]
- Atractodenchelys C.H. Robins & C. R. Robins, 1970
- Dysomma Alcock, 1889
- Dysommina Ginsburg, 1951
- Ilyophis Gilbert, 1891
- Linkenchelys D. G. Smith, 1989
- Meadia Böhlke, 1951
- Thermobiotes Geistdoerfer, 1991
Characteristics
[edit]Ilyophinae eels are caharcterised by having a lower jaw that is shorter than the upper jaw. In most taxa the upper body lacks scales and in some Dysomma species as well as Thermobiotes do not have a pectoral fin. They have depressed, relatively rounded heads with some rather long teeth.[1] These eels show very variable body shapes, dentition, whether they possess pectoral fins, the size of the eyes and the structure of the snout. In some species, the anus is positioned rather far forward onthe body, almost beneath the pectoral fins, if any.[6]
Distribution and habitat
[edit]Ilyophinae eels are benthic species found in deeper waters in the Atlantic, Indian and Pacific Oceans. They are known to form large aggregations in seamounts and thermal vents, known as eel cities.[7]
References
[edit]- ^ a b Nelson, J.S.; Grande, T.C.; Wilson, M.V.H. (2016). Fishes of the World (5th ed.). Hoboken, NJ: John Wiley & Sons. pp. 141–142. doi:10.1002/9781119174844. ISBN 978-1-118-34233-6. LCCN 2015037522. OCLC 951899884. OL 25909650M.
- ^ Van Der Laan, Richard; Eschmeyer, William N.; Fricke, Ronald (11 November 2014). "Family-group names of Recent fishes". Zootaxa. 3882 (1): 1–230. doi:10.11646/zootaxa.3882.1.1. PMID 25543675.
- ^ "Eschmeyer's Catalog of Fishes Classification". California Academy of Sciences. Retrieved 7 November 2024.
- ^ Christopher Scharpf (3 October 2024). "Family SYNAPHOBRANCHIDAE Johnson 1862 (Cutthroat Eels)". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf. Retrieved 7 November 2024.
- ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Synaphobranchidae". Catalog of Fishes. California Academy of Sciences. Retrieved 6 November 2024.
- ^ David G. Smith (2016). "SYNAPHOBRANCHIDAE Cut throat eels". In Carpenter, K.E. & De Angelis, N. (eds.). The living marine resources of the Eastern Central Atlantic. FAO Species Identification Guide for Fishery Purposes. Vol. 3 Bony fishes part 1 (Elopiformes to Scorpaeniformes). Rome: FAO. pp. 1645–1653.
- ^ "Vailulu'u Eel City and Moat of Death". Wondermondo. Retrieved 7 November 2024.