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Acipenser medirostris in Mexico
Green sturgeon

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Acipenser medirostris   Ayres, 1854
Family:	Acipenseridae (Sturgeons) , subfamily: Acipenserinae			picture (Acmed_u0.jpg) by Gotshall, D.W.
Order:	Acipenseriformes  (sturgeons and paddlefishes)
Class:	Actinopterygii (ray-finned fishes)
FishBase name:	Green sturgeon
Max. size:	250 cm TL (male/unsexed; Ref. 56557); max. published weight: 159.0 kg (Ref. 2850); max. reported age: 60 years
Environment:	demersal; anadromous ; depth range 0 - 80 m
Climate:	temperate; 10 - 20°C; 65°N - 32°N
Global Importance:	fisheries: minor commercial
Resilience:	Low, minimum population doubling time 4.5 - 14 years (K=0.05-0.09)
Distribution:	North America: Aleutian Islands and the Gulf of Alaska to Ensenada, Mexico. Considered vulnerable in Canada. The Asian population is now considered to be a separate species Acipenser mikadoi (Ref. 6866). International trade restricted (CITES II, since 1.4.98; CMS Appendix II).
Diagnosis:	Dorsal spines (total): 0-0; Dorsal soft rays (total): 33-35; Anal spines: 0-0; Anal soft rays: 22-28. Characterized by a single row of 1 to 4 bony plates along the midventral line between the anus and the anal fin, and about 33 to 35 rays in the dorsal fin. Dorsal arises at posterior third of the total length; anal fin arises under posterior part of dorsal; pectorals originate low on the body just behind gill opening and are large and rounded; pelvic fins arise near the anus. Generally olive to dark green, lower parts more or less whitish green; a longitudinal olive-green stripe on side between lateral and ventrolateral plates, another on midventral surface; fins grayish to pale green (Ref. 27547).
Biology:	Found in estuaries, lower reaches of large rivers, and in salt or brackish water off river mouths (Ref. 5723). Probably spawns in fresh water (Ref. 27547). May cover considerable distances in the ocean (Ref. 27547). Edible but with a disagreeable taste and unpleasant odor (Ref. 1998)
Threatened:	, (Ref. 36508)
Dangerous:	harmless
Coordinator:
Main Ref:	Page, L.M. and B.M. Burr. 1991. (Ref. 5723)
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Mexico country information
Common names:	Esturión verde, Esturión verde		Ref:  Escobar-Fernández, R. and M. Siri, 1997
Status:	native		Ref:  Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983
Salinity:	freshwater, brackish, marine
Regulations:	no regulations		Ref:
Uses:	no uses
Comments:	Also Ref. 2850, 6792.
Country Information:	www.cia.gov/cia/publications/factbook/geos/mx.html
Occurrences:	Occurrences    Point map
Main Ref:	Birstein, V.J., 1993
Update

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	Note: No data are available if label is black .
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Internet sources:	BiOSC Point Data | CISTI | Google | GOBASE | FIGIS | GenBank ( genome, nucleotide ) | PubMed | Scirus | Tree of Life | Zoological Record
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	Modified:  Garilao, Cristina V.	Entered:  Froese, Rainer

	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