Acipenser transmontanus, White sturgeon : fisheries, aquaculture, gamefish

Acipenser transmontanus Richardson, 1836

White sturgeon
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Acipenser transmontanus   AquaMaps   Data sources: GBIF OBIS
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Acipenser transmontanus
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Classification / Names Populärnamn | synonymer | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (strålfeniga fiskar) > 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 Ekologi

; marina; sötvatten; brackvatten bottenlevande; anadrom (Ref. 51243); djupintervall 1 - 122 m (Ref. 27547).   Temperate; 0°C - 23°C (Ref. 1998); 58°N - 24°N, 163°W - 107°W (Ref. 54269)

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | 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). Considered vulnerable in Canada (Ref. 6866). International trade restricted (CITES II, since 1.4.98).

Length at first maturity / Size / Vikt / Age

Maturity: Lm 160.0  range ? - ? cm
Max length : 610 cm TL hane/ej könsbestämd; (Ref. 1998); common length : 21.0 cm TL hane/ej könsbestämd; (Ref. 12193); publicerad maxvikt: 816.0 kg (Ref. 27436); rapporterad maxålder: 104 år (Ref. 39377)

Short description Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt): 0; Mjukstrålar i ryggfenan (totalt): 44-48; Mjukstrålar i analfenan: 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).

Biologi     Ordlista (t.ex. epibenthic)

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 Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver

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 | referenser | Koordinator | Medarbetare

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. 123251)

  Critically Endangered (CR) (E); Date assessed: 30 April 2004

CITES (Ref. 118484)


CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fiskeri: kommersiell; Vattenbruk: kommersiell; sportfisk: ja
FAO(fiskeri: produktion, species profile; publication : search) | FishSource | Sea Around Us

Ytterligare information

Age/Size
Tillväxt
Length-weight
Length-length
Length-frequencies
Morfometri
Morfologi
Larver
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referenser
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Estimates based on models

Preferred temperature (Ref. 115969): 8.3 - 12.2, mean 9.7 °C (based on 80 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00316 (0.00159 - 0.00628), b=3.18 (3.01 - 3.35), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trofisk nivå (Ref. 69278):  3.3   ±0.1 se; based on diet studies.
Generation time: 27.5 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Resiliens (Ref. 120179):  Mycket låg, lägsta populationsfördubblingstid mer än 14 år (tm=11-34; tmax=104).
Vulnerability (Ref. 59153):  Very high vulnerability (87 of 100) .
Price category (Ref. 80766):   Unknown.