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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.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
marino; acqua dolce; salmastro demersale; anadromo (Ref. 120652); distribuzione batimetrica 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).
Lunghezza alla prima maturità / Dimensione / Peso / Età
Maturità: Lm ?, range 162 - ? cm
Max length : 270 cm TL maschio/sesso non determinato; (Ref. 96339); common length : 130 cm TL maschio/sesso non determinato; (Ref. 12193); peso massimo pubblicato: 159.0 kg (Ref. 2850); Età massima riportata: 60 anni (Ref. 72476)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 0; Raggi dorsali molli (totale) : 33 - 35; Spine anali: 0; Raggi anali molli: 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)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: scarso interesse commerciale; Pesce da pesca sportiva: si
Strumenti
Rapporti speciali
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Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 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). |
Livello trofico (Fonte Biblio. 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. |
Resilienza (Fonte Biblio. 120179) |
Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (K=0.05-0.09). |
Vulnerabilità della pesca (Ref. 59153) |
Very high vulnerability (80 of 100). 🛈 |
Vulnerabilità climatica (Ref. 125649) |
High to very high vulnerability (67 of 100). 🛈 |
Categoria di prezzo (Ref. 80766) |
Unknown.
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Nutrienti (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); |