Myxines (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); knappi: In honor of American ichthyologist Leslie W. Knapp (1929-2017), National Museum of Natural History, Smithsonian Institution, for supplying the authors with study material (See ETYFish).
Eponymy: Dr Leslie William Knapp (1929–2017) was an ichthyologist at the Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian. [...] (Ref. 128868), visit book page.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin bathydémersal; non migrateur; profondeur 112 - 650 m (Ref. 31276). Deep-water
Southwest Atlantic: Falkland Islands (Ref. 31699.) and Patagonia, Argentina (Ref. 133135).
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 56.5 cm TL mâle / non sexé; (Ref. 31276)
This species is distinguished by the following characters: with a 2-cusp multicusp on both the anterior and posterior sets of cusps; gill pouches 6 on each side; tail slime pores 11-14; total slime pores 116-123; rostrum broadly rounded; ventral finfold nearly vestigial; color pinkish-blue, head and barbels slightly paler than body (Ref. 31699).
Body shape (shape guide): eel-like.
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
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 ).
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)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00115 (0.00044 - 0.00300), b=3.03 (2.80 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Niveau trophique (Réf. 69278) |
3.4 ±0.6 se; based on size and trophs of closest relatives |
Résilience (Réf. 120179) |
Faible, temps minimum de doublement de population : 4,5 à 14 années (Fec assumed to be <100). |
Vulnérabilité de la pêche (Ref. 59153) |
Moderate to high vulnerability (48 of 100). 🛈 |