Acipenser medirostris Ayres, 1854

Green sturgeon

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Acipenseriformes \| Acipenseridae \| Acipenserinae
Synonyms	Acipenser acutirostris, ... more
Common names	Esturgeon vert, Esturión verde, Green Japanese sturgeon, ... more

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Image of Acipenser medirostris (Green sturgeon)

Picture by Gotshall, D.W.

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AquaMaps Data sources: GBIF OBIS

Main reference

Page, L.M. and B.M. Burr. 1991. (Ref. 5723)
Other references | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 250 cm TL male/unsexed; (Ref. 56557); common length : 130 cm TL male/unsexed; (Ref. 12193); max. published weight: 159.0 kg (Ref. 2850); max. reported age: 60 years (Ref. 72476)

Environment

Demersal; anadromous (Ref. 51243); freshwater; brackish; marine; depth range 0 - 80 m (Ref. 50610)

Climate / Range

Temperate; 10°C - 20°C (Ref. 2059); 65°N - 32°N, 166°W - 114°W (Ref. 54261)

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).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 0; Dorsal soft rays (total): 33 - 35; Anal spines: 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).

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).


IUCN Red List Status (Ref. 57073)	Threat to humans
Near Threatened (NT)	Harmless

Human uses
Fisheries: minor commercial; gamefish: yes


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

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Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

Low, minimum population doubling time 4.5 - 14 years (K=0.05-0.09)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Very high vulnerability (80 of 100)	Not marketed/unknown

Entered by Froese, Rainer

Modified by Ortañez, Auda Kareen

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Page last modified by : elaxamana, 15 July 2009

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