United States (contiguous states) country information

Common names: Stutch'-un, White sturgeon, White sturgeon
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: commercial | Ref: Jordan, D.S. and E.C. Starks, 1895
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Common in Puget Sound, Washington in 1895 (Ref. 28609). Also Ref. 4925, 6885. Status of threat: endangered. Criteria: 1,2 (http://fisc.er.usgs.gov/afs/) (Ref. 81264).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/us.html
National Fisheries Authority: http://www.nmfs.gov
Occurrences: Occurrences Point map
Main Ref: Page, L.M. and B.M. Burr, 1991
National Database:

Common names from other countries

Esturgeon blanc, Esturión blanco, 高首鲟, ... more

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Chondrostei (sturgeons) > Acipenseriformes (Sturgeons and paddlefishes) > Acipenseridae (Sturgeons) > Acipenserinae
Etymology: Acipenser: Latin, acipenser = sturgeon, 1853 (Ref. 45335); transmontanus: The specific name is derived from the Latin acipenser (sturgeon), trans (beyond), and montanus (mountain) (Ref. 27436).
More on author: Richardson.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; freshwater; brackish; demersal; anadromous (Ref. 51243); depth range 1 - 122 m (Ref. 27547). Temperate; 0°C - 23°C (Ref. 1998); 58°N - 24°N, 163°W - 107°W (Ref. 54269)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Eastern Pacific: Alaska Bay to Monterey, California, USA. Landlocked in Columbia River drainage, Montana, and perhaps Lake Shasta in California, USA. Translocated to lower Colorado River, Arizona in USA. Reported from northern Baja California, Mexico (Ref. 2850, 27436).

Length at first maturity / Size / Weight / Age

Maturity: L_m 160.0 range ? - ? cm
Max length : 610 cm TL male/unsexed; (Ref. 1998); common length : 21.0 cm TL male/unsexed; (Ref. 12193); max. published weight: 816.0 kg (Ref. 27436); max. reported age: 104 years (Ref. 39377)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 44 - 48; Anal soft rays: 28 - 31. Distinguished by the 2 rows of 4 to 8 bony plates on a midventral line between the anus and anal fin, and about 45 rays in the dorsal fin (Ref. 27547). Gray or brownish above, paler below; fins gray (Ref. 27547). Barbels situated closer to snout tip than to mouth; no obvious scutes behind dorsal and anal fins (Ref. 86798).

Spends most of its time in the sea, usually close to shore (Ref. 27547). Enters estuaries of large rivers and moves far inland to spawn (Ref. 5723). Individuals larger than 48.3 cm feed mainly on fishes; smaller ones feed mainly on chironomids, but also takes small crustaceans, other insects and mollusks (Ref. 1998). Feeding ceases just before spawning (Ref. 1998). Excellent food fish that is sold fresh, smoked or frozen (Ref. 9988). Eggs marketed as caviar (Ref. 1998). In the past, the airbladder was made into isinglass (Ref. 27547).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Adults return to the sea after spawning (Ref. 27547). Spawning frequency interval every 4 years for younger females and every 10-11 years in older females (Ref. 1998).

Main reference Upload your references | References | Coordinator | Collaborators

Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)

IUCN Red List Status (Ref. 130435)

Vulnerable (VU) (A2bc); Date assessed: 15 September 2020

CITES (Ref. 128078)

Appendix II: International trade monitored

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: commercial; aquaculture: commercial; gamefish: yes

FAO(Fisheries: production, species profile; publication : search) | FishSource | Sea Around Us

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Internet sources

Estimates based on models

Preferred temperature (Ref. 115969): 8.3 - 12.2, mean 9.7 (based on 80 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00324 (0.00161 - 0.00648), b=3.18 (3.01 - 3.35), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.3 ±0.1 se; based on diet studies.

Resilience (Ref. 120179): Very Low, minimum population doubling time more than 14 years (tm=11-34; tmax=104).

Fishing Vulnerability (Ref. 59153): Very high vulnerability (87 of 100).

Climate Vulnerability (Ref. 125649): Moderate to high vulnerability (48 of 100).

Price category (Ref. 80766): Unknown.

Acipenser transmontanus Richardson, 1836