Environment: milieu / climate zone / depth range / distribution range
Ecología
; agua dulce; salobre bentopelágico; anadromo (Ref. 51243). Subtropical; 10°C - 20°C (Ref. 2059); 64°N - 35°N, 12°E - 53°E
Eurasia: Caspian, Black, Marmara and Baltic Sea basins (Sweden and Finland north to 63°N), North Sea basin from Elbe to Ems drainages. In Anatolia: in Marmara basin, south to Great Menderes and Lake Egridir and east to Kızılırmak drainage. Absent between Kızılırmak and Çoruh drainages. Extirpated in Crimea. Introduced in Rhine.
Tamaño / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 50.0 cm TL macho / no sexado; (Ref. 556); common length : 20.0 cm TL macho / no sexado; (Ref. 556); peso máximo publicado: 1.4 kg (Ref. 35541); edad máxima reportada: 15 años (Ref. 59043)
Short description
Claves de identificación | Morfología | Morfometría
Espinas dorsales (total) : 3; Radios blandos dorsales (total) : 8 - 9; Espinas anales: 3; Radios blandos anales: 16 - 22. Diagnosed from its congeners in Europe by the following characters: anal fin with 16-21½ branched rays; back keeled behind dorsal base; in spawning season, males blackish brown with orange cheek and sometimes belly (Ref. 59043). Caudal fin with 19 soft rays. Scalar formula: 49-64, 6-10 (Ref. 40476).
Inhabits brackish estuaries, large to medium rivers and some large subalpine lakes. Sedentary populations inhabit even in small rivers or barbel zone. Feeds mainly on small molluscs and insect larvae. Breeds in riffles in shallow, fast-flowing streams and rivers on gravel. Semi-anadromous populations forage in freshened parts of sea and migrate for long distances to spawn. Lacustrine populations move to fast-flowing tributaries. Spent adults return to foraging habitats (Ref. 59043). Threatened from its range due to water obstruction (Ref. 26100).
Produces 15,000-20,000 eggs at the age of 6-7 years (Ref. 12259). Spawns for several years. Semi-anadromous populations undertake long distance spawning migrations while lacustrine populations migrate to fast-flowing tributaries. In Dniepr and Kuban, migration starts in September, decreases in winter and resumes in March-May (Ref. 59043).
Kottelat, M. and J. Freyhof, 2007. Handbook of European freshwater fishes. Publications Kottelat, Cornol and Freyhof, Berlin. 646 pp. (Ref. 59043)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Pesquerías: escaso valor comercial; Acuicultura: comercial; pesca deportiva: si
Herramientas
Special reports
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Fuentes de Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00724 (0.00660 - 0.00795), b=3.14 (3.11 - 3.17), in cm total length, based on LWR estimates for this species (Ref.
93245).
Nivel trófico (Ref.
69278): 3.3 ±0.1 se; based on diet studies.
Resiliencia (Ref.
120179): Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (K=0.22; tm=3; tmax=15).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (37 of 100).
