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Mustelus canis in US Virgin Islands
Dusky smooth-hound

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Mustelus canis   (Mitchill, 1815)
Family:	Triakidae (Houndsharks) , subfamily: Triakinae			picture (Mucan_m0.jpg) by Harris, M.
Order:	Carcharhiniformes  (ground sharks)
Class:	Elasmobranchii (sharks and rays)
FishBase name:	Dusky smooth-hound
Max. size:	150 cm TL (male/unsexed; Ref. 244); max. published weight: 12.2 kg (Ref. 40637)
Environment:	demersal; oceanodromous ; depth range - 800 m
Climate:	subtropical; 42°N - 44°S
Global Importance:	fisheries: commercial
Resilience:	Low, minimum population doubling time 4.5 - 14 years (K=0.04-0.43; tm=2-5; tmax=7; Fec= 4-20)
Distribution:	Western Atlantic: Massachusetts to Florida (USA), northern and western Gulf of Mexico, Venezuela, Cuba, Jamaica, Barbados, Bermuda, Bahamas; southern Brazil to northern Argentina; also western Gulf of Mexico and Antilles (Ref. 26938). Northwest Atlantic: Canada (Ref. 5951). Allopatric with Mustelus mustelus and sympatric with Mustelus norrisi. One of the two new allopatric species of canis- norrisi-like smooth-hounds in this region is often confused with this species (Ref. 244). The subspecies Mustelus canis insularis, occurring at several Caribbean islands, was identified by Heemstra (Ref. 27770).
Diagnosis:	A small, slim shark. Well-serrated dorsal fins, second nearly as large as first (Ref. 26938).
Biology:	Found on continental and insular shelves and upper slopes, ranging from shallow inshore waters and the intertidal to 200 m, occasionally down to 579 m (Ref. 244). Occasionally found in freshwater. It is doubtful that this species can live in fresh water for an extended period of time (Ref. 244). Feeds on large crustaceans, mainly crabs, but also heavily on lobsters (Homarus) (Ref. 244). Probably non-territorial. Off the Atlantic coast of the USA, this species is migratory (Ref. 244). Viviparous (with a yolk-sac placenta), with 4 to 20 young in a litter. Longevity given as 7 years (Ref. 775) but appears too low. Utilized fresh, dried-salted, and smoked (Ref. 9987)
Threatened:	, (Ref. 36508)
Dangerous:	harmless
Coordinator:	Compagno, Leonard J.V.
Main Ref:	Compagno, L.J.V.. 1984. (Ref. 244)
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US Virgin Islands country information
Common names:	[ No common name ]		Ref:
Status:	native		Ref:
Salinity:	freshwater, brackish, marine
Uses:	no uses
Country Information:	www.cia.gov/cia/publications/factbook/geos/vq.html
Occurrences:	Occurrences    Point map
Main Ref:	Compagno, L.J.V., 1984
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Internet sources:	BiOSC Point Data | CISTI | Google | GOBASE | GenBank ( genome, nucleotide ) | National databases | PubMed | Scirus | Public aquariums | Tree of Life | Sea Around Us | Zoological Record Other web sites |
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	Checked:  Capuli, Estelita Emily	Modified:  Sampang, Arlene G.	Entered:  Carpenter, Kent E.

	Ref.:				Glossary
		(e.g. 9948)				(e.g. cephalopods)
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Page created by: Eli, 20.10.03, last modified by Eli, 26.06.07