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 Gaoxiong and Donggang (Ref. 47843). Museum: Tong-Kong, SW of Taiwan, NTU 7502711 (holotype of P. cheni, 37.7 cm TL, female) (Ref. 31448). However, holotype entered in the Catalog of Fishes is NTUM 02723 (Ref. 26282). Also Ref. 31545.
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: Shen, S.-C. and H.-J. Tao, 1975
National Database: The Fish Database of Taiwan

Common names from other countries

Cheni imisuu, 龙筋, 鳗背, ... more

Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa

Myxini (Kieferlose) (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); cheni: In honor of vertebrate zoologist Jianshen (“Johnson”) T. F. Chen (1898-1988), Director, National Taiwan Museum (Taipei), for “important” contributions to the taxonomy of Taiwanese fishes. (See ETYFish).

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

seewasser bathydemersal; standorttreu; tiefenbereich 180 - ? m (Ref. 31276). Deep-water

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Point map | Einführungen | Faunafri

Northwest Pacific: southwest of Taiwan (northern South China Sea).

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 37.7 cm TL Männchen/unbestimmt; (Ref. 31276)

Kurzbeschreibung Morphologie | Morphometrie

5 pairs gill pouches and gill apertures, closely spaced in a straight line; branchial slime pores absent; fused unicuspid teeth 3/3; dental formula: 10 + 3/3 + 10; no whitish mid-dorsal stripe.

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | 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 ).

Hauptreferenz Upload your references | Referenzen | Koordinator | Partner

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)

IUCN Rote Liste Status (Ref. 130435)

gefährdet, siehe IUCN Red List (VU) (B1ab(iii)); Date assessed: 13 November 2009

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

FAO(Publication : search) | FishSource |

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Estimates based on models

Preferred temperature (Ref. 115969): 2.8 - 6.4, mean 4.2 (based on 63 cells).

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): 4.1 ±0.7 se; based on size and trophs of closest relatives

Widerstandsfähigkeit (Ref. 120179): niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (Fec assumed to be <100).

Fishing Vulnerability (Ref. 59153): Low to moderate vulnerability (28 of 100).

Eptatretus cheni (Shen & Tao, 1975)