Elasmobranchii (sharks and rays) > Carcharhiniformes
(Ground sharks) > Triakidae
(Houndsharks) > Triakinae
Etymology: Mustelus: Latin, mustela, -ae = weasel (Ref. 45335).
Environment / Climate / Range
Marine; demersal; oceanodromous (Ref. 51243); depth range 60 - 195 m (Ref. 27770). Subtropical; 28°S - 45°S, 66°W - 46°W (Ref. 244)
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 55 - 62 cm
Max length : 92.0 cm TL male/unsexed; (Ref. 57911); common length : 60.0 cm TL male/unsexed; (Ref. 6077)
Southwest Atlantic: southern Brazil to northern Argentina.
Found on the continental shelf. Feeds on crabs and probably other crustaceans, and presumably small fishes. Ovoviviparous (aplacental) with 2 to 7 pups per litter. Size at birth 26 cm. Utilized for human consumption.
Ovoviviparous, 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 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Fisheries: highly commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00224 (0.00110 - 0.00455), b=3.18 (3.01 - 3.35), based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.6 ±0.3 se; Based on diet studies.
Resilience (Ref. 69278
): Very Low, minimum population doubling time more than 14 years (Fec=2-3).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (54 of 100) .