Country Species Summary

Acipenser oxyrinchus oxyrinchus in Canada
Atlantic sturgeon

Acipenser oxyrinchus oxyrinchus Mitchill, 1815
Family:	Acipenseridae (Sturgeons) , subfamily: Acipenserinae	picture (Acoxy_u2.jpg) by Christian Pusch/BfN
Order:	Acipenseriformes (sturgeons and paddlefishes)
Class:	Actinopterygii (ray-finned fishes)
FishBase name:	Atlantic sturgeon
Max. size:	403 cm TL (male/unsexed; Ref. 26938); 430 cm TL (female); max. published weight: 368 kg; max. reported age: 60 years
Environment:	demersal; anadromous ; depth range - 46 m
Climate:	subtropical; 56°N - 10°S
Global Importance:	fisheries: commercial; aquarium: public aquariums
Resilience:	Very low, minimum population doubling time more than 14 years (K=0.03; tm=7-34; tmax=60; Fec=1.03 million)
Distribution:	Western Atlantic: Hamilton River, Labrador, Newfoundland, Canada to northeastern Florida, USA. Occurs occasionally in Bermuda and French Guiana (Ref. 7251). Northern Gulf of Mexico (Ref. 26938). International trade restricted (CITES II, since 28.6.79).
Diagnosis:	Dorsal spines (total): 0-0; Dorsal soft rays (total): 30-46; Anal spines: 0-0; Anal soft rays: 22-32. Elongate fish, pentagonal in cross section and shark-like fins (Ref. 26938). Double row of pre anal shields. Presence of a soft fontanelle. Bony shields are oval. Carina on dorsal shields do not have a conspicuous hook. Head and back bluish-black and lower surface whitish (Ref. 37032). Snout long, sharply V-shaped. 2 pairs of short, slender barbels in transverse line midway between end of snout and anterior edge of mouth (Ref. 4639). Viscera pale (Ref. 7251).
Biology:	Inhabit shallow waters of continental shelf. Adults are highly migratory while at sea (Ref. 57533). Ascend coastal rivers to spawn. Eggs demersal, measuring 2.55 mm in diameter and hatching in 1 week at 17.8°C (Ref. 9980). Juveniles may remain in fresh or brackish water until 3-5 years of age or 76-91.5 cm long (Ref. 4639). Females take 8 to 30 years to reach sexual maturity and spawn only every 3-4 years. Exact time of spawning depends on temperature (Ref. 26938). Used smoked and fresh (Ref. 37032)
Threatened:	, (Ref. 36508)
Dangerous:	harmless
Coordinator:
Main Ref:	Page, L.M. and B.M. Burr. 1991. (Ref. 5723)
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Canada country information
Common names:	[ No common name ]	Ref:
Status:	native	Ref:
Salinity:	freshwater, brackish, marine
Importance:	minor commercial	Ref: Coker, G.A., C.B. Portt and C.K. Minns, 2001
Regulations:	no regulations	Ref:
Uses:	no uses
Comments:	Ranges from Quebec to Newfoundland and Nova Scotia, with low intensity fishery (Ref. 52559). Also Ref. 5723. Status of threat: vulnerable; status same as 1989. Criteria: 1,2 (http://fisc.er.usgs.gov/afs/) (Ref. 81264).
States/Provinces:	New Brunswick (native) Newfoundland and Labrador (native) Nova Scotia (native) Prince Edward Island (native) Quebec (native)
States/Provinces Complete?:	No
Country Information:	www.cia.gov/cia/publications/factbook/geos/ca.html
National Fisheries Authority:	www.ncr.dfo.ca/home_e.htm
Occurrences:	Occurrences Point map
Main Ref:	Coker, G.A., C.B. Portt and C.K. Minns, 2001
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Modified: Torres, Armi G.

Entered: Torres, Armi G.

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Page created by: Eli, 20.10.03, last modified by Eli, 26.06.07

	Ref.:		Glossary
		(e.g. 9948)		(e.g. cephalopods)
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