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); galeatus: Latin for helmeted, probably referring to high, enlarged supraorbital ridges or crest (See ETYFish).
More on author: Günther.
Environment: milieu / climate zone / intervalo de profundidade / distribution range
Ecologia
marinhas associadas(os) a recifes; intervalo de profundidade 0 - 93 m (Ref. 54545). Temperate; 27°S - 35°S, 150°E - 155°E
Western Pacific: eastern Australia.
Length at first maturity / Tamanho / Peso / Idade
Maturidade: Lm ?, range 70 - ? cm
Max length : 152 cm TL macho/indeterminado; (Ref. 247); common length : 122 cm TL macho/indeterminado; (Ref. 247); Idade máx. registada: 12 anos (Ref. 72467)
Espinhos dorsais (total) : 2; Espinhos anais: 0. Body with broad blackish bands or saddle markings (Ref. 9838).
Body shape (shape guide): elongated.
A moderately common benthic and epibenthic shark found on the continental shelf (Ref. 247, 43278). Occurs from close inshore to about 93 m depth (Ref. 247, 43278). Feeds primarily on sea urchins, but also on crustaceans, mollusks, and small fishes (Ref. 31369). Oviparous, egg cases spirally flanged and with long tendrils (Ref. 6871). Hatches at about 22 cm (Ref. 6871).
Life cycle and mating behavior
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Oviparous, paired eggs are laid. Embryos feed solely on yolk (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 2025-1)
Ameaça para o homem
Traumatogenic
Utilização humana
Pescarias: pouco comercial
Ferramentas
Relatórios especiais
Descarregue XML
Fontes da internet
Estimates based on models
Preferred temperature (Ref.
123201): 20.2 - 24, mean 21.8 °C (based on 16 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5029 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00380 (0.00165 - 0.00876), b=3.15 (2.95 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nível Trófico (Ref.
69278): 3.7 ±0.53 se; based on food items.
Resiliência (Ref.
120179): Muito baixo, tempo mínimo de duplicação da população maior que 14 anos (tm=11.8).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
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Nutrients (Ref.
124155): Calcium = 2.87 [0.37, 11.82] mg/100g; Iron = 0.113 [0.027, 0.319] mg/100g; Protein = 19.5 [17.2, 21.5] %; Omega3 = 0.198 [0.078, 0.467] g/100g; Selenium = 7.8 [2.2, 24.7] μg/100g; VitaminA = 33.2 [8.1, 135.9] μg/100g; Zinc = 0.439 [0.206, 0.907] mg/100g (wet weight);
