Bulgaria country information

Common names: Nesetra, Ruska esetra
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/bu.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Kottelat, M. and J. Freyhof, 2007
National Database:

Common names from other countries

Esturgeon du Danube, Esturión del Danube, 俄罗斯鲟, ... more

Classificação / Names Nomes comuns | Sinônimos | Catalog of Fishes(Gênero, Espécies) | ITIS | CoL | WoRMS | Cloffa

> Acipenseriformes (Sturgeons and paddlefishes) > Acipenseridae (Sturgeons) > Acipenserinae
Etymology: Acipenser: Latin, acipenser = sturgeon, 1853 (Ref. 45335); gueldenstaedtii: Named for Johann Anton Güldenstädt (1745-1781)..

Environment: milieu / climate zone / depth range / distribution range Ecologia

marinhas; Água doce; estuarina demersal; anádromo (Ref. 51243); intervalo de profundidade 2 - 100 m, usually 10 - 25 m. Temperate; 10°C - 20°C (Ref. 2059); 61°N - 35°N, 26°E - 54°E

Distribuição Países | Áreas da FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Eurasia: Black Sea, Sea of Azov and Caspian Sea basins. Introduced throughout Europe.

Comprimento de primeira maturação / Tamanho / Peso / Idade

Maturity: L_m ? range ? - ? cm
Max length : 236 cm TL macho/indeterminado; (Ref. 59043); common length : 145 cm TL macho/indeterminado; (Ref. 3561); peso máx. publicado: 115.0 kg (Ref. 6866); idade máx. registrada: 46 anos (Ref. 3561)

Descrição suscinta Chaves de identificação | Morfologia | Morfometria

Espinhos dorsais (total) : 0; Raios dorsais (total) : 27 - 48; Raios anais : 16 - 35. Under the name A. g. colchicus. Lower lip not continuous, interrupted at center. Five rows of scutes: dorsal 7-19, lateral 24-44 on each side, ventral 6-13 on each side, with lines of smaller stellate bony plates between the dorsal and ventral rows. Color of back olivaceous grey, flanks lighter, and belly white.

Anadromous and freshwater populations exist. At the sea, it occurs in shallow coastal and estuarine zones. In freshwaters, it inhabits deep parts of large rivers with moderate to swift current (Ref. 59043). Found mainly near the shore over sand and mud. Usually solitary, but swarms when hibernating or during spawning migrations. Occasionally forms schools (Ref. 3241). Feeds on benthic molluscs, crustaceans and small fishes. Spawns on stone or gravel bottom in large and deep rivers with strong current, 1-1.5 m/s (Ref. 59043). Mainly propagated through artificial reproduction.

Ciclo de vida ou comportamento de acasalamento Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

Under the name A. g. colchicus. Spawns in rivers. Natural spawning not extensive, maintained chiefly by artificial propagation. Enters rivers from April to June (a few in autumn).

Referência principal Upload your references | Referências | Coordenador | Colaboradores

Sokolov, L.I. and L.S. Berdicheskii, 1989. Acipenseridae. p. 150-153. In J. Holcík (ed.) The freshwater fishes of Europe. Vol. 1, Part II. General introduction to fishes Acipenseriformes. AULA-Verlag Wiesbaden. 469 p. (Ref. 9953)

Status na Lista Vermelha da UICN (Ref. 130435)

Criticamente em perigo (CR) (A2bcde); Date assessed: 14 September 2019

CITES (Ref. 128078)

Appendix II: International trade monitored

CMS (Ref. 116361)

Appendix II: Migratory species conserved through agreements

Ameaça para os humanos

Harmless

Uso pelos humanos

Pescarias: espécies comerciais; Aquacultura: espécies comerciais; Aquário: Aquários públicos

FAO(Aquaculture systems: produção; pescarias: produção, perfil da espécie; publication : search) | FishSource | Sea Around Us

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Estimates based on models

Preferred temperature (Ref. 115969): 10.7 - 15.9, mean 13.8 (based on 32 cells).

Índice de diversidade filogenética (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00437 (0.00268 - 0.00711), b=3.12 (2.99 - 3.25), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Nível Trófico (Ref. 69278): 3.3 ±0.1 se; based on diet studies.

Resiliência (Ref. 120179): Muito baixo(a), tempo mínimo de duplicação da população maior que 14 anos (tm=11; Fec = 26,000).

Fishing Vulnerability (Ref. 59153): Very high vulnerability (87 of 100).

Climate Vulnerability (Ref. 125649): High vulnerability (62 of 100).

Categoria de preço (Ref. 80766): Unknown.

Acipenser gueldenstaedtii Brandt & Ratzeburg, 1833