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); mcmillanae: In honor of marine biologist Charmion B. McMillan (b. 1925), Scripps Institution of Oceanography, for her “fine” contributions to hagfish science (See ETYFish).
Eponymy: Dr Charmion B McMillan (d: 1925) was a marine biologist at the Marine Biology Research Division, Scripps Institution of Oceanography, University of California San Diego. [...] (Ref. 128868), visit book page.
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
marino batidemersal; no migratorio; rango de profundidad 700 - 1500 m (Ref. 26938). Deep-water
Western Central Atlantic: Caribbean: Puerto Rico and Virgin Islands.
Tamaño / Peso / Edad
Madurez: Lm ? range ? - ? cm
Max length : 47.0 cm TL macho / no sexado; (Ref. 26938)
Espinas dorsales (total) : 0; Radios blandos dorsales (total) : 0; Espinas anales: 0; Radios blandos anales: 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).
Body shape (shape guide): eel-like.
Found burrowing in mud in very deep water (Ref. 26938).
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | 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)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Herramientas
Informes especiales
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Fuentes de Internet
Estimaciones basadas en modelos
Temperatura preferida (Referencia
123201): 3.9 - 7, mean 5.5 °C (based on 93 cells).
Índice de diversidad filogenética (Referencia
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00115 (0.00045 - 0.00294), b=3.03 (2.81 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nivel trófico (Referencia
69278): 3.4 ±0.6 se; based on size and trophs of closest relatives
Resiliencia (Referencia
120179): Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (Fec assumed to be <100).
Vulnerabilidad pesquera (Ref.
59153): Moderate vulnerability (37 of 100).
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