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Elasmobranchii (tubarões e raias) (sharks and rays) > Carcharhiniformes (Ground sharks) > Triakidae (Houndsharks) > Triakinae
Etymology: Triakis: tri-, from tres (L.), three; akis (Gr.), point, referring to each tooth consisting of one large central cusp flanked on by both sides by a small cusplet. (See ETYFish); semifasciata: semi-, from semis (L.), half; fasciatus (L.), banded, referring to striking black saddle marks that cover only dorsal half of body. (See ETYFish).
More on author: Girard.

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

marinhas; estuarina demersal; intervalo de profundidade 0 - 156 m (Ref. 96339), usually ? - 6 m (Ref. 55312). Subtropical; 45°N - 19°N, 126°W - 105°W (Ref. 55312)

Distribuição Países | Áreas FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Eastern Pacific: Oregon, USA to the Gulf of California.

Length at first maturity / Tamanho / Peso / Idade

Maturity: L_m 109.8, range 100 - 129 cm
Max length : 198 cm TL macho/indeterminado; (Ref. 244); 180.0 cm TL (female); common length : 160 cm TL macho/indeterminado; (Ref. ); peso máx. Publicado: 18.4 kg (Ref. 40637); Idade máx. registada: 30 anos (Ref. 6145)

Found in shallow water from the intertidal to deeper waters, most commonly in enclosed muddy bays; including estuaries and lagoons (S. Wilson, pers. comm.). Prefer sandy areas, mud flats, and bottoms strewn with rocks near rocky reefs and kelp beds. Feed mainly on crabs, shrimps, bony fish, fish eggs, clam necks and innkeeper worms among a large variety of food in its diet. Form mixed schools. Ovoviviparous (aplacental), with 4 to 29 young in a litter. Utilized fresh or frozen for human consumption.

Life cycle and mating behavior Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

Females produce 6-24 young, which are 20-23 cm long at birth (Ref. 43439). Ovoviviparous, embryos feed solely on yolk (Ref. 50449).

Referência principal Upload your references | Referências | Coordenador : Compagno, Leonard J.V. | Colaboradores

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 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)

Categoria na Lista Vermelha da IUCN (Ref. 130435)

Preocupação menor (LC) ; Date assessed: 18 December 2014

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para o homem

Harmless

Utilização humana

Pescarias: espécies comerciais; peixe desportivo: sim; Aquário: Espécies comerciais

FAO - pescarias: perfil da espécie; Publication: search | FishSource | Sea Around Us

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Estimates based on models

Preferred temperature (Ref. 123201): 12.8 - 24, mean 20.4 °C (based on 131 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00229 (0.00119 - 0.00443), b=3.13 (2.97 - 3.29), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

Nível Trófico (Ref. 69278): 3.7 ±0.2 se; based on diet studies.

Resiliência (Ref. 120179): Muito baixo, tempo mínimo de duplicação da população maior que 14 anos (K=0.07-0.09; tm=11-21; tmax=30; Fec=4-12).

Fishing Vulnerability (Ref. 59153): Very high vulnerability (80 of 100).

Categoria de preço (Ref. 80766): High.

Triakis semifasciata Girard, 1855