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Overview |
Main identification features
- fins blunt
- juveniles: dark bars
- flank: white spots
Elongate, hunched body; short head pointed snout; mouth angular, short; teeth irregularly rounded, without points; width between eyes = 4.5-5.6% of total length; eyes horizontal ovals, with ventral nictitating membranes; 5 gill slits, last 2 over pectoral fin base; 2 large dorsal fins, second slightly smaller than first; first dorsal a blunt, broad triangle, nearer pelvic than pectoral; rear edges of dorsals denticled; distance between dorsal fins = 17-22% of total length; anal fin smaller than and with origin under middle of second dorsal; mouth angular; tail strongly asymmetrical, lower lobe not expanded or with concave rear edge; fins with blunt tips; skin denticles on flank pointed ovals with a single point, with or without canal on base.
Grey to grey-brown above, paler below; sides with many white spots; juveniles with dark bars.
Size: 130 cm.
Habitat: upper continental shelf, demersal.
Depth: 15-50 m.
SW Atlantic and SE Pacific (Colombia to Chile, Galapagos Islands).
Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo); South Temperate (Peruvian Province ).
Depth Range Max: 50 m.
Depth Range Min: 15 m.
Diet: mobile benthic crustacea (shrimps/crabs); bony fishes; mobile benthic worms; mobile benthic gastropods/bivalves.
Eastern Pacific Range: Northern limit=6; Southern limit=-9; Western limit=-93; Eastern limit=-78; Latitudinal range=15; Longitudinal range=15.
Egg Type: Live birth; No pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Demersal.
Global Endemism: New world (East Pacific + West Atlantic); East Pacific + Atlantic (East +/or West); TEP non-endemic; All species.
Habitat: Mud; Sand & gravel; Soft bottom (mud, sand,gravel, beach, estuary & mangrove); Soft bottom only.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 130 cm.
Regional Endemism: Island (s); Continent; Continent + Island (s); Tropical Eastern Pacific (TEP) non-endemic; Eastern Pacific non-endemic; Peruvian province, primarily; Temperate Eastern Pacific, primarily; All species.
Residency: Resident.
Salinity: Marine; Marine Only.
Water Column Position: Bottom; Mid Water; Near Bottom; Bottom + water column;
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Names |
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Links to other sites |
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References |
- Barez, P., 1996., Lista de los Peces Marinos del Ecuador Continental., Revista de Biologia Tropical, 44:731-741.
- Compagno, L.J.V., 1999., Checklist of living elasmobranchs. In Hamlett W.C. (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes., The John Hopkins University Press:471-498.
- Compagno, L.J.V., 1984., Sharks of the World. An annotated and illustrated catalogue of shark species known to date. Part 2. Carcharhiniformes. FAO Species Catalogue., FAO Fish. Synop. No 125, 4(2):251-655.
- Cope, E. D., 1877., Synopsis of the cold blooded vertebrata, procured by Prof. James Orton during his exploration of Peru in 1876-77., Proc. Amer. Phil. Soc., 17:33-49.
- Fischer , W. , Krup , F. , Schneider , W. , Sommer , C. , Carpenter , K. E. and Niem, V. H., 1995., Guia FAO para la Identificacion de Especies de para los fines de la Pesca. Pacifico Centro-Oriental. Volumen II. Vertebrados - Parte 1., FAO2:647-1200.
- Hildebrand, S.F., 1946., A descriptive catalog of the shore fishes of Peru., Bull. U.S. Nat. Mus., 189:1-530.
- Jimenez-Prado, P., Barez, P., 2004., Peces marinos del Ecuador continental / Marine fishes of continental Ecuador., SIMBIOE/NAZCA/IFEA tomo 1 y 2.
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Acknowledgements |
I thank Ashley MacDonald and John Pickering, University of Georgia, for technical support in building this page.
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http://www.fishbase.org/Summary/speciesSummary.php?genusname=Mustelus&speciesname=mento ---> http://192.134.151.83/Summary/speciesSummary.php?genusname=Mustelus&speciesname=mento http://192.134.151.83/Summary/speciesSummary.php?genusname=Mustelus&speciesname=mento ---> https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Mustelus&speciesname=mento https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Mustelus&speciesname=mento ---> https://fishbase.mnhn.fr/summary/Mustelus-mento.html
Mustelus mento, Speckled smooth-hound : fisheries
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Mustelus mento
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Béarez, P.
Elasmobranchii (sharks and rays) >
Carcharhiniformes
(Ground sharks) >
Triakidae
(Houndsharks) > Triakinae
Etymology:
Mustelus:
Latin for weasel, an ancient name for sharks, possibly referring to the pointed snouts, swift movements and/or rapacious feeding behavior of smaller predatory sharks [strictly not tautonymous with
Squalus mustelus
Linnaeus 1758 since type was designated by the ICZN]. (
See ETYFish
)
;
mento:
From the Latin
mentum
, chin, referring to its “long muzzle”. (
See ETYFish
)
.
More on author:
Cope
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 16 - 50 m (Ref.
244
). Subtropical; 2°N - 57°S, 95°W - 67°W (Ref.
244
)
Eastern Pacific: Peru to southern Chile, including the Galapagos and Juan Fernández Islands.
Length at first maturity / Size / Weight / Age
Maturity: L
m
88.0
, range 86 - 90 cm
Max length : 141 cm TL male/unsexed; (Ref.
122662
)
Adults marked by small white spots but sometimes plain colored, while young specimens marked with dark colored bars (Ref.
6032
).
An inshore and offshore shark found on the continental and insular shelves (Ref.
244
). Ovoviviparous, with 7 young in a litter. Size at birth about 30 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.
130435
)
Critically Endangered (CR)
(A2bd); Date assessed:
07 February 2019
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: highly commercial
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Estimates based on models
Preferred temperature (Ref.
123201
): 9.7 - 20.5, mean 11.4 °C (based on 32 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00214 (0.00126 - 0.00364), b=3.14 (3.00 - 3.28), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 4.1 ±0.03 se; based on food items.
Resilience (Ref.
120179
): Very Low, minimum population doubling time more than 14 years (Fec=7).
Fishing Vulnerability (Ref.
59153
): Very high vulnerability (85 of 100).
Price category (Ref.
80766
):
Medium
.
Nutrients (Ref.
124155
): Calcium = 18.3 [5.1, 92.2] mg/100g; Iron = 0.47 [0.15, 1.77] mg/100g; Protein = 21.8 [19.5, 24.1] %; Omega3 = 0.116 [0.046, 0.279] g/100g; Selenium = 30.4 [9.3, 110.2] μg/100g; VitaminA = 6.99 [2.40, 19.88] μg/100g; Zinc = 0.626 [0.275, 1.253] mg/100g (wet weight);
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- 20 July 2016
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on line
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Updated: 2024-03-29 14:09:58 gmt
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