Environment: milieu / climate zone / depth range / distribution range
Ecologia
; Água doce bentopelágico. Temperate; 60°N - 45°N, 38°E - 51°E
Europe and Asia: Northern Caspian basin (Volga, Ural).
Tamanho / Peso / Idade
Maturity: Lm ? range ? - ? cm
Max length : 13.0 cm TL macho/indeterminado; (Ref. 1441); idade máx. registrada: 5 anos (Ref. 59043)
Descrição suscinta
Chaves de identificação | Morfologia | Morfometria
Espinhos dorsais (total) : 3; Raios dorsais (total) : 7; Espinhos anais: 2 - 3; Raios anais : 6. Differs from its congeners in Caspian Sea basin by the possession of the following characters: longitudinal epithelial crests on predorsal scales; scale rows around caudal peduncle 14-16; scales on lateral line 42-43 + 2; dorsal fin with 7½ branched rays; and anal fin with 6½ branched rays (Ref. 59043).
Adults inhabit bottom of moderately flowing lowland rivers, preferring sand bottom. Are nocturnal benthic species feeding on insect larvae and other larger benthic invertebrates. Locally threatened due to pollution and river engineering (Ref. 59043).
Ciclo de vida ou comportamento de acasalamento
Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas
Kottelat, M. and J. Freyhof, 2007. Handbook of European freshwater fishes. Publications Kottelat, Cornol and Freyhof, Berlin. 646 pp. (Ref. 59043)
Status na Lista Vermelha da UICN (Ref. 130435)
Ameaça para os humanos
Harmless
Uso pelos humanos
Ferramentas
Relatórios especiais
Baixar XML
Fontes da internet
Estimates based on models
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00501 (0.00327 - 0.00767), b=3.17 (3.05 - 3.29), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Nível Trófico (Ref.
69278): 3.4 ±0.38 se; based on food items.
Generation time: 1.8 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
Resiliência (Ref.
120179): médio(a), tempo mínimo de duplicação da população 1,4 - 4,4 anos (tmax=5; tm=2).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
