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Acipenseriformes (Sturgeons and paddlefishes) >
Acipenseridae (Sturgeons)
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.
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
marino; agua dulce; salobre demersal; anadromo (Ref. 138280); rango de profundidad 1 - 122 m (Ref. 27547). Temperate; 0°C - 23°C (Ref. 1998); 58°N - 24°N, 163°W - 107°W (Ref. 54269)
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).
Longitud en la primera madurez / Tamaño / Peso / Edad
Madurez: Lm 160.0  range ? - ? cm
Max length : 610 cm TL macho / no sexado; (Ref. 1998); common length : 21.0 cm TL macho / no sexado; (Ref. 12193); peso máximo publicado: 816.0 kg (Ref. 27436); edad máxima reportada: 104 años (Ref. 39377)
Espinas dorsales (total) : 0; Radios blandos dorsales (total) : 44 - 48; Radios blandos anales: 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).
Body shape (shape guide): elongated.
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).
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).
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)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Pesquerías: comercial; Acuicultura: comercial; pesca deportiva: si
Herramientas
Informes especiales
Descargar XML
Fuentes de Internet
Estimaciones basadas en modelos
Índice de diversidad filogenética (Referencia 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00302 (0.00153 - 0.00597), b=3.18 (3.01 - 3.35), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245). |
Nivel trófico (Referencia 69278) |
3.3 ±0.1 se; based on diet studies. |
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Generation time |
27.5 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies. |
Resiliencia (Referencia 120179) |
Muy bajo, población duplicada en un tiempo mínimo superior a 14 años (tm=11-34; tmax=104). |
Vulnerabilidad pesquera (Ref. 59153) |
Very high vulnerability (87 of 100). 🛈 |
Vulnerabilidad climática (Ref. 125649) |
Moderate to high vulnerability (48 of 100). 🛈 |
Categoría de precios (Ref. 80766) |
Unknown.
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Nutrientes (Ref. 124155) |
Calcium = 8.84 [4.78, 17.65] mg/100g; Iron = 0.244 [0.136, 0.429] mg/100g; Protein = 17.4 [14.8, 20.2] %; Omega3 = 0.293 [0.147, 0.585] g/100g; Selenium = 31.4 [14.7, 69.3] μg/100g; VitaminA = 4.45 [1.29, 16.47] μg/100g; Zinc = 0.377 [0.252, 0.570] mg/100g (wet weight); |