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Eptatretus nelsoni (Kuo, Huang & Mok, 1994)

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Native range | All suitable habitat | Point map | Year 2050
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Eptatretus nelsoni   AquaMaps   Data sources: GBIF OBIS
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Image of Eptatretus nelsoni
No image available for this species;
drawing shows typical species in Myxinidae.


Chinese Taipei (Taiwan) country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from the coastal waters off Tung Kong , SW Taiwan at depths of 82-250 meters, and from the Taiwan Strait (Ref. 51420). Museum: southwestern coast of Taiwan, NSYSU 2857 (holotype of P. nelsoni, 19 cm SL) (Ref. 31545). Also Ref. 31276, 47843.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/tw.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Kuo, C.-H., K.-F. Huang and H.-K. Mok, 1994
National Database: The Fish Database of Taiwan

Common names from other countries

Классификация / Names народные названия | синонимы | Catalog of Fishes(род, виды) | ITIS | CoL | WoRMS | Cloffa

Myxini (миксины) (hagfishes) > Myxiniformes (Hagfishes) > Myxinidae (Hagfishes) > Eptatretinae
Etymology: Eptatretus: hepta (Gr.), seven; tretos (Gr.), perforated (i.e., with holes), referring to seven gill apertures on what would later be described as Homea banksii (=E. cirrhatus) [range within genus is 6-14 pairs of gill apertures]. (See ETYFish);  nelsoni: In honor of ichthyologist Gareth J. Nelson (b. 1937), then with the American Museum of Natural History, for contributions to the promotion of phylogenetic systematics. (See ETYFish).

Environment: milieu / climate zone / depth range / distribution range экология

морской демерсальный; немигрирующий; пределы глубины 50 - 250 m (Ref. 51420).   Subtropical

распространение страны | регионы FAO | Ecosystems | места находок | Point map | интродукции | Faunafri

Northwest Pacific: southwest Taiwan.

Length at first maturity / Size / Вес / Возраст

Maturity: Lm 24.0, range 22 - 26 cm
Max length : 25.9 cm TL самец/пол неопределен; (Ref. 51420)

Краткое описание морфология | морфометрия

Gill apertures usually 5 (4-6). Slime pores: prebranchial 14-20; branchial 0; trunk 35-39; tail 6-10; total 57-67. Gill apertures nonlinear and crowded.

биология     глоссарий (например epibenthic)

A dwarf species; males develop testes at about 20 cm and a 22.4 cm female had elongated eggs; a 26.8 cm specimen had eggs 2.4 cm long; and a 24.4 cm specimen had 11 eggs about 1.5 cm long with polar caps already forming (Ref. 51420).

Life cycle and mating behavior половая зрелость | размножение | нерест | икра | Fecundity | личинки

Copulatory organ absent. The gonads of hagfishes are situated in the peritoneal cavity. The ovary is found in the anterior portion of the gonad, and the testis is found in the posterior part. The animal becomes female if the cranial part of the gonad develops or male if the caudal part undergoes differentiation. If none develops, then the animal becomes sterile. If both anterior and posterior parts develop, then the animal becomes a functional hermaphrodite. However, hermaphroditism being characterised as functional needs to be validated by more reproduction studies (Ref. 51361 ).

Основная ссылка Upload your references | ссылки | координатор | соавторы

Fernholm, B., 1998. Hagfish systematics. p. 33-44. In J.M. Jørgensen, J.P. Lomholt, R.E. Weber and H. Malte (eds.) The biology of hagfishes. Chapman & Hall, London. 578 p. (Ref. 31276)

Статус Красного Списка МСОП (Ref. 130435)

  уязвимый; см. Красный Список МСОП (VU) (B1ab(iii)); Date assessed: 13 November 2009

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Угроза для людей

  Harmless




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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00204 (0.00092 - 0.00452), b=2.93 (2.73 - 3.13), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.9   ±0.7 se; based on size and trophs of closest relatives
устойчивость к внешним воздействиям (Ref. 120179):  низкий, минимальное время удвоения популяции 4.5-14 лет (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (16 of 100).