Elasmobranquios (tiburones y rayas) (sharks and rays) >
Squaliformes (Sleeper and dogfish sharks) >
Somniosidae (Sleeper sharks)
Etymology: Somniosus: Latin for sleepy, reflecting Lesueur’s surmise that these sharks are slow or sluggish because of their relatively small fins (hence the name sleeper sharks) (See ETYFish); longus: Latin for long, perhaps referring to what Tanaka described as its “oblong” shape (See ETYFish).
More on author: Tanaka.
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
marino batidemersal; rango de profundidad 250 - 1160 m (Ref. 50224). Subtropical
Distribución
Territorios | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Mapa de puntos | Introducciones | Faunafri
Western Pacific: Japan and New Zealand.
Tamaño / Peso / Edad
Madurez: Lm ?  range ? - ? cm
Max length : 110 cm TL macho / no sexado; (Ref. 50224); 130.1 cm TL (female)
Vértebra: 77 - 79. Somniosus longus is distinguished from S. rostratus in having a relatively longer second dorsal fin where overall length is almost equal to first dorsal fin 91-100% (vs. 76-88%); slightly larger eye with horizontal diameter more than 37% (mean 46%) of length from snout tip to eye (vs. <37, mean 33%); higher number of tooth rows in upper jaw 56-57 (vs.53); and slightly higher spiral valve counts 26-27 (vs. 23 ) (Ref. 50224).
Body shape (shape guide): elongated.
Caught by crab pot and bottom longline (Ref. 50224).
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Yano, K., J.D. Stevens and L.J.V. Compagno, 2004. A review of the systematics of the sleeper shark genus Somniosus with redescriptions of Somniosus (Somniosus) antarcticus and Somniosus (Rhinoscymnus) longus (Squaliformes: Somniosidae). Ichthyol. Res. 51:360-373. (Ref. 50224)
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
Descargar XML
Fuentes de Internet
Estimaciones basadas en modelos
Índice de diversidad filogenética (Referencia 82804) |
PD50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00389 (0.00170 - 0.00889), b=3.12 (2.93 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Nivel trófico (Referencia 69278) |
4.1 ±0.4 se; based on size and trophs of closest relatives |
Vulnerabilidad pesquera (Ref. 59153) |
High to very high vulnerability (74 of 100). 🛈 |