Elasmobranquios (tiburones y rayas) (sharks and rays) >
Heterodontiformes (Bullhead and horn sharks) >
Heterodontidae (Bullhead, horn, or Port Jackson sharks)
Etymology: Heterodontus: heteros (Gr.), different; odontos (Gr.), tooth, referring to pointy teeth (for clutching prey) at front of jaws, different than rounded molar-like teeth (for grinding hard-shelled invertebrates) at the back (See ETYFish); ramalheira: In honor of João Ramalheira, captain of the trawler from which holotype was collected, and “who has brought in much valuable scientific material” [presumably a noun in apposition, without the patronymic “i”] (See ETYFish).
More on author: Smith.
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
marino demersal; rango de profundidad 40 - 305 m (Ref. 106604), usually 100 - ? m (Ref. 43278). Deep-water; 22°N - 26°S, 30°E - 60°E
Western Indian Ocean: off southern Mozambique and Natal, South Africa (Ref. 5578), also off the eastern shore of the Arabian Peninsula.
Tamaño / Peso / Edad
Madurez: Lm ?  range ? - ? cm
Max length : 64.0 cm TL macho / no sexado; (Ref. 247); 83.0 cm TL (female)
Espinas dorsales (total) : 2; Espinas anales: 0. Dark red-brown with scattered white spots (Ref. 6576).
Body shape (shape guide): elongated.
Found on the outer continental shelf and uppermost slopes (Ref. 247, 43278). Benthic (Ref. 43278). Feeds on crabs (Ref. 5578, 43278). Oviparous (Ref. 50449).
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Oviparous (Ref. 50449). Distinct pairing with embrace (Ref. 205).
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Traumatogenic
Usos humanos
Pesquerías: sin interés; Acuario: Acuarios públicos
Herramientas
Informes especiales
Descargar XML
Fuentes de Internet
Estimaciones basadas en modelos
Índice de diversidad filogenética (Referencia 82804) |
PD50 = 0.5029 [Uniqueness, from 0.5 = low to 2.0 = high]. |
|
Bayesian length-weight
|
a=0.00372 (0.00160 - 0.00864), b=3.15 (2.94 - 3.36), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Nivel trófico (Referencia 69278) |
3.5 ±0.60 se; based on food items. |
Resiliencia (Referencia 120179) |
Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (Fec assumed to be <100). |
Vulnerabilidad pesquera (Ref. 59153) |
High vulnerability (60 of 100). 🛈 |