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); galeatus: Latin for helmeted, probably referring to high, enlarged supraorbital ridges or crest (See ETYFish).
More on author: Günther.
Environment: milieu / climate zone / rango de profundidad / distribution range
Ecología
marino asociado a arrecife; rango de profundidad 0 - 93 m (Ref. 54545). Temperate; 27°S - 35°S, 150°E - 155°E
Western Pacific: eastern Australia.
Length at first maturity / Tamaño / Peso / Age
Madurez: Lm ?, range 70 - ? cm
Max length : 152 cm TL macho / no sexado; (Ref. 247); common length : 122 cm TL macho / no sexado; (Ref. 247); edad máxima reportada: 12 años (Ref. 72467)
Espinas dorsales (total) : 2; Espinas anales: 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).
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)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Traumatogenic
Human uses
Pesquerías: escaso valor comercial
Herramientas
Special reports
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Fuentes de Internet
Estimates based on models
Preferred temperature (Referencia
123201): 20.2 - 24, mean 21.8 °C (based on 16 cells).
Phylogenetic diversity index (Referencia
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).
Nivel trófico (Referencia
69278): 3.7 ±0.53 se; based on food items.
Resiliencia (Referencia
120179): Muy bajo, población duplicada en un tiempo mínimo superior a 14 años (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);
