Eptatretus deani, Black hagfish

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Eptatretus deani (Evermann & Goldsborough, 1907)

Black hagfish
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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 deani   AquaMaps   Data sources: GBIF OBIS
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Image of Eptatretus deani (Black hagfish)
Eptatretus deani
Picture by Fernholm, B.

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);  deani: In honor of American ichthyologist Bashford Dean (1867-1928), American Museum of Natural History, for his work on the embryology of E. stoutii. (See ETYFish).
More on authors: Evermann & Goldsborough.

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

marien bathydemersaal; standvastig; diepte 103 - 2743 m (Ref. 31276). Deep-water; 60°N - 27°N, 148°W - 114°W

Verspreiding Landen | FAO regio's | Ecosystemen | Voorkomen | Point map | Introducties | Faunafri

Eastern Pacific: southeastern Alaska to central Baja California, Mexico.

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturity: Lm 38.0  range ? - ? cm
Max length : 63.5 cm TL mannelijk / geslacht onbekend; (Ref. 96339)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 0; Dorsale zachte stralen (totaal): 0; Anale stekels 0; Anale zachte stralen: 0. No true fins - one dorsal finfold, far back, median, very low, continuous with the caudal; caudal moderately broad, and round with ray-like markings; ventral finfold very low, origin somewhat posterior to last gill aperture, extending to anus (Ref. 6885). Prune colored, preserved specimens black; frequently piebald with light spots; the very edges of caudal and ventral finfolds may be light colored (Ref. 6885).

Biologie     Verklarende woordenlijst (bv. epibenthic)

Inhabits mud bottoms (Ref. 2850). Minimum depth reported at 103 m (Ref. 80811).

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 ). In one study (Ref. 40710), hermaphroditism is exhibited by only 0.2% of the individuals examined.

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)

  Onvoldoende gegevens (DD) ; Date assessed: 12 November 2009

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

Visserij: van geen belang
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Estimates based on models

Preferred temperature (Ref. 123201): 3.2 - 5.5, mean 4.3 °C (based on 54 cells).
Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00234 (0.00139 - 0.00396), b=2.93 (2.78 - 3.08), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trofisch niveau (Ref. 69278):  3.8   ±0.52 se; based on food items.
Weerstandsvermogen (Ref. 120179):  laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec = 14).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (45 of 100).