Eptatretus yangi

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  Eptatretus
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  Myxinidae
- - Klassifizierung -
- Eptatretinae
- Myxinidae
- Myxiniformes
- Myxini
- Chordata
- Animalia

Eptatretus yangi (Teng, 1958)

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Native range | All suitable habitat | Point map | Year 2050

This map was computer-generated and has not yet been reviewed.

Eptatretus yangi AquaMaps Data sources: GBIF OBIS

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Eptatretus yangi
Picture by The Fish Database of Taiwan

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); yangi: In honor of Hung-Jia (spelled Hung-Chia in Pinyin) Yang, Taiwanese Fisheries Research Institute (Kaohsiung), who collected type series (See ETYFish).
Eponymy: Hung-Chia (Hung-Jia) Yang was an ichthyologist and highly talented illustrator working at the Taiwanese Fisheries Research Institute, Kaohsiung. [...] (Ref. 128868), visit book page.

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

seewasser demersal; standorttreu; tiefenbereich 20 - 50 m (Ref. 31276). Subtropical

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

Northwest Pacific: Taiwan and the South China Sea.

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 29.6 cm TL Männchen/unbestimmt; (Ref. 31276)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Gill apertures usually 5. Slime pores: prebranchial 17-23; branchial 0; trunk 39-47; tail 7-12; total 68-79. Gill apertures nonlinear and crowded.

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: Version 2024-2)

nicht bedroht (LC) ; Date assessed: 13 November 2009

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

Fischereien: nicht kommerziell

FAO - Publication: search | FishSource |

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Estimates based on models

Preferred temperature (Ref. 123201): 24.2 - 25.6, mean 24.8 °C (based on 9 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00204 (0.00094 - 0.00444), b=2.93 (2.74 - 3.12), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.0 ±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 vulnerability (20 of 100).

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