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Gadiformes (Cods) >
Macrouridae (Grenadiers or rattails)
Etymology: Hymenocephalus: Named for its transparent membrane-like head covering (‘‘hymen head’’) and fragile nature of head bones (Ref. 100825).
More on author: Gilbert.
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
marino bentopelágico; rango de profundidad 340 - 1348 m (Ref. 58302). Deep-water
Widespread but patchy and discontinuous. Atlantic: Caribbean and continental slope of northern South America. Pacific: off subtropical western and eastern Australia, several islands in the southern Pacific (New Caledonia, Vanuatu, Wallis & Futuna, Marquesas Islands), and off Hawaii. Not recorded from eastern Atlantic nor Indian Ocean.
Tamaño / Peso / Edad
Madurez: Lm ?  range ? - ? cm
Max length : 20.0 cm TL macho / no sexado; (Ref. 37108)
This species is distinguished by the following characters: a black-colored large-headed fish, with head size 21-25% TL; pelvic fin rays 13-14; pectoral fin rays 13-16; projecting snout, 20-24% HL; head bones are papery thin and often distorted; no barbel; small orbit diameter, 20-24% HL; interorbital width 60-70% HW; infraorbital width 20-25% HL; postorbital-preopercular interspace 10-14% HL; preopercular supporter is very small and forked; gill rakers 21-25; ventral striae reaching to about ? from pelvic fin bases to periproct; small otolith with rounded outline, no predorsal lobe developed; colliculi separated; otholith length to height (OL:OH), 1.0-1.2; total colliculum length to pseudocolliculum length (TCL:PCL) is 2.2-2.8 (Ref. 98298).
Body shape (shape guide): elongated; Cross section: angular.
Found on the continental slope (Ref. 75154). Benthopelagic (Ref. 58302).
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Cohen, D.M., A.W. Ebeling, T. Iwamoto, S.B. McDowell, N.B. Marshall, D.E. Rosen, P. Sonoda, W.H. Weed III and L.P. Woods, 1973. Fishes of the western North Atlantic. Part six. New Haven, Sears Found. Mar. Res., Yale Univ. (Ref. 37108)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Pesquerías: bycatch
Herramientas
Informes especiales
Descargar XML
Fuentes de Internet
Estimaciones basadas en modelos
Temperatura preferida (Referencia
123201): 5.1 - 10.2, mean 7.1 °C (based on 622 cells).
Índice de diversidad filogenética (Referencia
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00219 (0.00111 - 0.00432), b=3.20 (3.03 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nivel trófico (Referencia
69278): 3.4 ±0.4 se; based on size and trophs of closest relatives
Resiliencia (Referencia
120179): Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (Preliminary K or Fecundity.).
Vulnerabilidad pesquera (Ref.
59153): Low vulnerability (10 of 100).
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