Elasmobranchii (tubarões e raias) (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.
Ambiente: milieu / zona climática / intervalo de profundidade / gama de distribuição
Ecologia
marinhas demersal; intervalo de profundidade 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.
Tamanho / Peso / Idade
Maturidade: Lm ?  range ? - ? cm
Max length : 64.0 cm TL macho/indeterminado; (Ref. 247); 83.0 cm TL (female)
Espinhos dorsais (total) : 2; Espinhos anais: 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 de vida e comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
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)
Categoria na Lista Vermelha da IUCN (Ref. 130435: Version 2025-2 (Global))
Ameaça para o homem
Traumatogenic
Utilização humana
Pescarias: sem interesse; Aquário: Aquários públicos
Ferramentas
Relatórios especiais
Descarregue XML
Fontes da internet
Estimativas baseadas em modelos
Índice de diversidade filogenética (Ref. 82804) |
PD50 = 0.5029 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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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). |
Nível Trófico (Ref. 69278) |
3.5 ±0.60 se; based on food items. |
Resiliência (Ref. 120179) |
Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (Fec assumed to be <100). |
Vulnerabilidade da pesca (Ref. 59153) |
High vulnerability (60 of 100). 🛈 |