Mixines (mixinos) (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); garmani: In honor of American ichthyologist-herpetologist Samuel Garman (1843-1927), Harvard University, for his “excellent work” on Myxine. (See ETYFish).
More on authors: Jordan & Snyder.
Environment: milieu / climate zone / depth range / distribution range
Ecología
marino batidemersal; no migratorio; rango de profundidad 500 - 800 m (Ref. 31276). Deep-water
Northwest Pacific: Japan.
Tamaño / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 54.0 cm TL macho / no sexado; (Ref. 31276)
Short description
Claves de identificación | Morfología | Morfometría
Six gill pouches. Ventral finfold well developed. Fused cusps 3/2, total cusps 42-46. Total slime pores 95-101. Anterior part of head lighter color than body (Ref. 51420).
Life cycle and mating behavior
Maturities | Reproducción | Spawnings | Egg(s) | Fecundities | Larva
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)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Herramientas
Special reports
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Fuentes de Internet
Estimates based on models
Preferred temperature (Ref.
123201): 5.3 - 9.7, mean 7.6 °C (based on 11 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 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).
Nivel trófico (Ref.
69278): 3.4 ±0.6 se; based on size and trophs of closest relatives
Resiliencia (Ref.
120179): Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (42 of 100).
