Elasmobranchii (sharks and rays) > Carcharhiniformes
(Ground sharks) > Triakidae
(Houndsharks) > Triakinae
Etymology: Mustelus: Latin, mustela, -ae = weasel (Ref. 45335); stevensi: Named for Dr. John Stevens, CSIRO. More on authors: White & Last.
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic; depth range 121 - 402 m (Ref. 76951). Tropical
Eastern Indian Ocean: Australia.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 58 - 91.9 cm
Max length : 91.9 cm TL male/unsexed; (Ref. 76951); 103.4 cm TL (female)
Morphology | Morphometrics
A relatively large species with the following set of characters: moderately tall dorsal fins, posterior margin mostly upright distally, the first dorsal-fin base length is 1.6-2.1 times anal-caudal space; buccopharyngeal denticles cover the entire palate and floor of mouth; long claspers of adult males are slender, strongly depressed, inner length about 8-11% TL, reaching to level of second dorsal-fin origin; the lower edge of spiracle usually at level with lower edge of eye; anal-fin insertion is slightly anterior to its apex; about 72/75 teeth rows; 76-80 precaudal vertebral centra; 33-35 monospondylous centra; dorsal color light yellowish grey with numerous small, diffuse-edged white spots in staggered, irregular rows on postspiracular head and body; the light and dark tonal coloration are not well demarcated; bases and inner lobe of dorsal fins of juveniles (<400 mm TL) whitish and strongly contrasted to distal part of fin; juveniles’ caudal fin not distinctly white-edged (Ref. 76951).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
White, W.T. and P.R. Last, 2008. Description of two new species of gummy sharks, genus Mustelus (Carcharhiniformes: Triakidae) from Australian waters. pp. 189-201. In P.R. Last, W.T. White and J.J. Pogonoski (eds). Descriptions of new Australian chondrichthyans. CSIRO Marine and Atmospheric Research Paper no. 22. 365 p. (Ref. 76951)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 13.5 - 20.4, mean 16.5 °C (based on 27 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00240 (0.00106 - 0.00541), b=3.13 (2.95 - 3.31), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.6 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (53 of 100) .