Eptatretus hexatrema, Sixgill hagfish

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Eptatretus hexatrema (Müller, 1836)

Sixgill hagfish
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This map was computer-generated and has not yet been reviewed.
Eptatretus hexatrema   AquaMaps   Data sources: GBIF OBIS
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Image of Eptatretus hexatrema (Sixgill hagfish)
Eptatretus hexatrema
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Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Myxini (slijmprikken) (hagfishes) > Myxiniformes (Hagfishes) > Myxinidae (Hagfishes) > Eptatretinae
Etymology: Eptatretus: Greek, epta = seven + Greek, tretos, -e, -on = with holes (Ref. 45335).  More on author: Müller.

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

; marien demersaal; standvastig; diepteverspreiding 10 - 400 m (Ref. 36731), usually 10 - 45 m (Ref. 31276).   Subtropical; 23°S - 35°S

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

Southeast Atlantic: known only from Walvis Bay, Namibia to Durban, South Africa.

Size / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 80.0 cm TL mannelijk/geslacht niet bekend; (Ref. 36731)

Biologie     Verklarende woordenlijst (b.v. epibenthic)

Commonly burrows in muddy bottoms (Ref. 27121). Feeds mostly by scavenging on dead or disabled fish (Ref. 27121).

Life cycle and mating behavior Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | 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 ).

Voornaamste referentie 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. 120744)

  Niet bedreigd (LC) ; Date assessed: 11 November 2009

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





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Estimates based on models

Preferred temperature (Ref. 115969): 16.6 - 25.7, mean 23.8 (based on 34 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00204 (0.00094 - 0.00446), b=2.92 (2.72 - 3.12), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  4.5   ±0.55 se; Based on food items.
Weerstandsvermogen (Ref. 120179):  laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec assumed to be <100).
Kwetsbaarheid (Ref. 59153):  Moderate to high vulnerability (46 of 100) .