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Acipenseriformes (Sturgeons and paddlefishes) >
Acipenseridae (Sturgeons)
Etymology: Acipenser: Latin, acipenser = sturgeon, 1853 (Ref. 45335); medirostris: The specific name is derived from medirostris, referring to its moderate snout (Ref. 1998).
More on author: Ayres.
Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet
Ökologie
seewasser; süßwasser; brackwasser demersal; anadrom (Ref. 120652); tiefenbereich 0 - 80 m (Ref. 50610). 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).
Länge bei der ersten Reifung / Größe / Gewicht / Alter
Geschlechtsreife: Lm ?, range 162 - ? cm
Max length : 270 cm TL Männchen/unbestimmt; (Ref. 96339); common length : 130 cm TL Männchen/unbestimmt; (Ref. 12193); max. veröff. Gewicht: 159.0 kg (Ref. 2850); max. veröff. Alter: 60 Jahre (Ref. 72476)
Rückenflossenstacheln (insgesamt) : 0; Rückenflossenweichstrahlen (insgesamt) : 33 - 35; Afterflossenstacheln: 0; Afterflossenweichstrahlen: 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). Barbels usually situated closer to mouth than to snout tip; coloration of scutes along side paler than skin (Ref. 86798).
Body shape (shape guide): elongated.
Found in estuaries, lower reaches of large rivers, and in salt or brackish water off river mouths (Ref. 5723). Adults probably spawn 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).
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 Rote Liste Status (Ref. 130435: Version 2025-2 (Global))
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Fischereien: weniger kommerziell; Sportfisch: ja
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Schätzungen auf der Grundlage von Modellen
Phylogenetischer Diversitätsindex (Ref. 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=0.00295 (0.00133 - 0.00656), b=3.18 (3.01 - 3.35), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Trophische Ebene (Ref. 69278) |
3.5 ±0.52 se; based on food items. |
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Generation time |
12.6 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies. |
Widerstandsfähigkeit (Ref. 120179) |
niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (K=0.05-0.09). |
Anfälligkeit der Fischerei (Ref. 59153) |
Very high vulnerability (80 of 100). 🛈 |
Klimaanfälligkeit (Ref. 125649) |
High to very high vulnerability (67 of 100). 🛈 |
Preiskategorie (Ref. 80766) |
Unknown.
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Nährstoffe (Ref. 124155) |
Calcium = 14.8 [9.0, 24.9] mg/100g; Iron = 0.253 [0.156, 0.390] mg/100g; Protein = 17.7 [15.1, 20.3] %; Omega3 = 0.354 [0.202, 0.615] g/100g; Selenium = 22.6 [12.6, 42.8] μg/100g; VitaminA = 4.61 [1.77, 11.95] μg/100g; Zinc = 0.437 [0.320, 0.597] mg/100g (wet weight); |