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Elasmobranchii (Haie und Rochen) (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); mexicanus: -anus (L.), belonging to: Mexico, referring to its distribution in the Gulf of California along the Mexican coast to at least Oaxaca (and perhaps to Peru). (See ETYFish).

Environment: milieu / climate zone / depth range / distribution range Ökologie

seewasser demersal; tiefenbereich 0 - 50 m (Ref. 54547). Tropical; 31°N - 18°S, 115°W - 80°W

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Eastern Pacific: Mexico and from Costa Rica to Colombia, probably Ecuador and Peru (Ref. 43278)

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 170 cm TL Männchen/unbestimmt; (Ref. 96339)

Found on littoral continental waters, on rocky and sandy areas from close inshore down to at least 20 m depth. Reported to reach 165 cm (Ref. 37955). Feeds on crabs and demersal fishes including midshipman (Porichthtys) (Ref. 43278). Oviparous (Ref. 37955). Utilized as fishmeal.

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

Oviparous (Ref. 50449). Distinct pairing with embrace (Ref. 205).

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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 Rote Liste Status (Ref. 130435)

nicht bedroht (LC) ; Date assessed: 07 February 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Traumatogenic

Nutzung durch Menschen

Fischereien: kleinfischerei

FAO - Fischereien: Artbeschreibung; Publication: search | FishSource |

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Estimates based on models

Preferred temperature (Ref. 123201): 20.6 - 26.9, mean 23.2 °C (based on 30 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5059 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00380 (0.00166 - 0.00872), b=3.15 (2.95 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.2 ±0.73 se; based on food items.

Widerstandsfähigkeit (Ref. 120179): niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (Fec assumed to be <100).

Fishing Vulnerability (Ref. 59153): Very high vulnerability (90 of 100).

Preiskategorie (Ref. 80766): Unknown.

Heterodontus mexicanus Taylor & Castro-Aguirre, 1972