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

纽氏副盲鳗, Nelsoni imisuu, 紐氏副盲鰻, ... more

Classificatie / Names Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

Myxini (slijmprikken) (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 Ecologie

marien demersaal; standvastig; diepte 50 - 250 m (Ref. 51420). Subtropical

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Northwest Pacific: southwest Taiwan.

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturity: L_m 24.0, range 22 - 26 cm
Max length : 25.9 cm TL mannelijk / geslacht onbekend; (Ref. 51420)

Korte beschrijving Morfologie | Morfometrie

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.

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).

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

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 ).

Hoofdreferentie Upload your references | Referenties | Coördinator | Medewerkers

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)

Status op de Rode Lijst van het IUCN (Ref. 130435)

Kwetsbaar, zie IUCN Rode Lijst (VU) (B1ab(iii)); Date assessed: 13 November 2009

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

Harmless

Gebruik door de mens

FAO(Publication : search) | FishSource |

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Estimates based on models

Fylogenetische diversiteitsindex (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).

Trofisch niveau (Ref. 69278): 3.9 ±0.7 se; based on size and trophs of closest relatives

Weerstandsvermogen (Ref. 120179): laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec assumed to be <100).

Fishing Vulnerability (Ref. 59153): Low vulnerability (16 of 100).

Eptatretus nelsoni (Kuo, Huang & Mok, 1994)