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Myxini (slijmprikken) (hagfishes) > Myxiniformes (Hagfishes) > Myxinidae (Hagfishes) > Myxininae
Etymology: Myxine: Ancient Greek word for a slimy fish: myxa, slime; -inus, one who, referring to copious amounts of slime produced by M. glutinosa. (See ETYFish); mcmillanae: In honor of marine biologist Charmion B. McMillan (b. 1925), Scripps Institution of Oceanography, for her “fine” contributions to hagfish science. (See ETYFish).

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

marien bathydemersaal; standvastig; diepte 700 - 1500 m (Ref. 26938). Deep-water

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Western Central Atlantic: Puerto Rico and Virgin Islands.

Grootte / Gewicht / Leeftijd

Maturity: L_m ? range ? - ? cm
Max length : 47.0 cm TL mannelijk / geslacht onbekend; (Ref. 26938)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale stekels (totaal) : 0; Dorsale zachte stralen (totaal) : 0; Anale stekels: 0; Anale zachte stralen: 0. Body gray; head white; without scales. Internal gill pouches 7, connected to a single gill opening on each side. Dorsal and paired fins absent; anal and caudal fins joined (Ref. 26938). Mucous pores along each side of the body: prebranchial 26-35, trunk 60-70; tail 9-12; total 101-115. Unicusps: anterior 8-10; posterior 8-10; total 42-48 (Ref. 40869).

Found burrowing in mud in very deep water (Ref. 26938).

Levenscyclus en paargedrag Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | 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 ).

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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)

Niet bedreigd (LC) ; Date assessed: 12 November 2009

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

Harmless

Gebruik door de mens

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Estimates based on models

Preferred temperature (Ref. 123201): 3.9 - 7, mean 5.5 °C (based on 93 cells).

Fylogenetische diversiteitsindex (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00115 (0.00045 - 0.00296), b=3.03 (2.80 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trofisch niveau (Ref. 69278): 3.4 ±0.6 se; based on size and trophs of closest relatives

Weerstandsvermogen (Ref. 120179): laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec assumed to be <100).

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (37 of 100).

Myxine mcmillanae Hensley, 1991