Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
marino; agua dulce; salobre demersal; anadromo (Ref. 138126); rango de profundidad 10 - 100 m. Temperate; 10°C - 20°C (Ref. 2059); 61°N - 36°N, 13°E - 54°E
Eurasia: Caspian, Black, Azov and Aegean Seas, ascending rivers to spawn. Occurrence in Albania needs confirmation. Introduced in Aral Sea. Artificially propagated (Ref. 6866). Probably extirpated from Aegean Sea and related river basins (Ref. 113969).
Longitud en la primera madurez / Tamaño / Peso / Edad
Madurez: Lm ?, range 120 - ? cm
Max length : 250 cm TL macho / no sexado; (Ref. 98365); common length : 125 cm TL macho / no sexado; (Ref. 3397); peso máximo publicado: 80.0 kg (Ref. 9988); edad máxima reportada: 29 años (Ref. 126409)
Espinas dorsales (total) : 0; Radios blandos dorsales (total) : 40 - 46; Radios blandos anales: 24 - 29. Snout long, pointed at tip. Lower lip not continuous, interrupted at center. Barbels short not reaching mouth but nearer to it than to tip of snout. Five rows of scutes, dorsal 11-14, lateral 30-36 on each side, ventral 10-11 on each side, with small bony stellate plates and smaller grains between main scute rows. Back dark grey to almost black, flanks lighter, belly white.
Body shape (shape guide): elongated; Cross section: circular.
At the sea, it occurs in coastal and estuarine zones and forages on the bottom mostly on clayey sand and intensively in the middle and upper water layers (Ref. 59043). Found mainly near shore over sand and mud, stays at the bottom during the day and rises to the surface to feed at night. Feeds mainly on fish, also mollusks, crustaceans and worms (Ref. 3193). Spawns in strong-current habitats in main course of large and deep rivers, on stone or gravel bottom. Spawning also takes place on flooded river banks and if gravel bottom is not available, on sand or sandy clay. Juveniles stay in shallow riverine habitats during first summer (Ref. 59043). One of the three most important species for caviar; also utilized fresh and frozen; eaten pan-fried, broiled and baked (Ref. 9988). Overfishing at the sea for meat and caviar will soon cause extinction of the natural populations and their survival can only depend on stocking (Ref. 59043).
Bauchot, M.-L., 1987. Poissons osseux. p. 891-1421. In W. Fischer, M.L. Bauchot and M. Schneider (eds.) Fiches FAO d'identification pour les besoins de la pêche. (rev. 1). Méditerranée et mer Noire. Zone de pêche 37. Vol. II. Commission des Communautés Européennes and FAO, Rome. (Ref. 3397)
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; Acuario: Acuarios públicos
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=0.00537 (0.00330 - 0.00874), b=3.05 (2.92 - 3.18), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245). |
Nivel trófico (Referencia 69278) |
3.5 ±0.2 se; based on diet studies. |
Resiliencia (Referencia 120179) |
Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (K=0.06; tm=9; tmax=29; Fec=20,000-360,000). |
Vulnerabilidad pesquera (Ref. 59153) |
Very high vulnerability (85 of 100). 🛈 |
Vulnerabilidad climática (Ref. 125649) |
Moderate to high vulnerability (51 of 100). 🛈 |
Categoría de precios (Ref. 80766) |
Unknown.
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Nutrientes (Ref. 124155) |
Calcium = 16.8 [10.4, 28.3] mg/100g; Iron = 0.271 [0.168, 0.429] mg/100g; Protein = 17.8 [15.3, 20.4] %; Omega3 = 0.385 [0.222, 0.665] g/100g; Selenium = 23.5 [13.0, 45.4] μg/100g; VitaminA = 4.05 [1.55, 10.74] μg/100g; Zinc = 0.409 [0.299, 0.552] mg/100g (wet weight); |