Eptatretus mccoskeri

Eptatretus mccoskeri McMillan, 1999

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Eptatretus mccoskeri   AquaMaps   Data sources: GBIF OBIS
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drawing shows typical species in Myxinidae.

Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | 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);  mccoskeri: Named for John E. McCosker, Senior Scientist, California Academy of Sciences, for providing this new study material, as well for his important contributions to marine biology (Ref. 31788).

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

; marien bathydemersaal; standvastig; diepteverspreiding ? - 215 m (Ref. 31788).   Deep-water

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

Southeast Pacific: known only from the Galapagos Islands.

Size / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 32.0 cm TL mannelijk/geslacht niet bekend; (Ref. 31788)

Korte beschrijving Morfologie | Morfometrie

Eight gill pouches and apertures each side, last gill aperture confluent with the pharyngocutaneous duct on the left side; 12 multicusps (3 fused cusps in each row), unicusps 36-39 (9,9 to 10,10 unicusps in each anterior and 9,9 to 9,10 in each posterior row), total cusps 48-51; total slime pores 72-74, prebranchial 14-15, branchial 7, trunk 40-42, tail 10-12. Ventral finfold absent or vestigial; caudal finfold with white margin; head slightly lighter than body color, face dark except for small white area around mouth; barbels all white (Ref. 31788).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

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

McMillan, C.B., 1999. Three new species of hagfish (Myxinidae, Eptatretus) from the Galápagos Islands. Fish. Bull. 97:110-117. (Ref. 31788)

Status op de Rode Lijst van het IUCN (Ref. 123251)

  Niet bedreigd (LC) ; Date assessed: 10 November 2009

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





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Estimates based on models

Preferred temperature (Ref. 115969): 8.2 - 14.7, mean 9.6 °C (based on 7 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00204 (0.00095 - 0.00438), 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   ±0.5 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref. 120179):  laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec assumed to be <100).
Kwetsbaarheid (Ref. 59153):  Low vulnerability (23 of 100) .