Bulgaria country information

Common names: Chiga
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

Sterlet, Esterlete, 小体鲟, ... more

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

> Acipenseriformes (Sturgeons and paddlefishes) > Acipenseridae (Sturgeons) > Acipenserinae
Etymology: Acipenser: Latin, acipenser = sturgeon, 1853 (Ref. 45335).
More on author: Linnaeus.

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

; Água doce; estuarina demersal; potamódromo (Ref. 51243); intervalo de profundidade 1 - ? m. Temperate; 71°N - 36°N, 11°E - 111°E (Ref. 124675)

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

Eurasia: rivers draining to Black, Azov and Caspian Seas; Siberia from Ob eastward to Yenisei drainages. Introduced throughout Europe, without formation of self-sustaining populations.

Length at first maturity / Tamanho / Peso / Idade

Maturity: L_m 42.8, range 40 - 45 cm
Max length : 125 cm TL macho/indeterminado; (Ref. 6866); common length : 40.0 cm TL macho/indeterminado; (Ref. 556); peso máx. Publicado: 16.0 kg (Ref. 593); Idade máx. registada: 20 anos (Ref. 556)

Descrição breve Chaves de identificação | Morfologia | Morfometria

Espinhos dorsais (total) : 13; Raios dorsais moles (total) : 28; Espinhos anais: 9; Raios anais moles: 14 - 18. Back and flanks are beige. Five rows of scutes : 12-17D, 57-71L, 10-19V. Ventrals and laterals are very light-colored, nearly white. Narrow and pointed snout with four long and fringed barbels. Inferior lip clearly slit (Ref. 40476). Can be diagnosed from congeners in Europe by having 56-71 lateral scutes, first dorsal scute not fused with head, barbels fimbriate, lower lip interrupted in middle and 11-27 gill rakers (Ref. 59043).

A fluvial fish which inhabits rivers and their tributaries (Ref. 9696). Occurs in large rivers, usually in the current and in deep water. Moves to flooded areas to feed (Ref. 59043). Chiefly potamodromous (Ref. 58897). Like other sturgeons, it aggregates in bottom holes in winter and exhibits little activity. In spring, when ice breaks, it rises from the bottom holes and moves upstream for spawning (Ref. 593). Spawns in habitats with strong-current on gravel, rarely on gravel-sand bottom or in flooded sites. Juveniles stay in riverine habitats during their first summer. Classified as endangered species. Anadromous populations are now extirpated; local populations are still surviving in most parts of range (Ref. 59043).

Life cycle and mating behavior Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

Scatters eggs on gravel.

Referência principal Upload your references | Referências | Coordenador | Colaboradores

Birstein, V.J., 1993. Sturgeons and paddlefishes: threatened fishes in need of conservation. Conserv. Biol. 7:773-787. (Ref. 6866)

Categoria na Lista Vermelha da IUCN (Ref. 130435)

Ameaçada (EN) (A2cde); 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 o homem

Harmless

Utilização humana

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

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00141 (0.00081 - 0.00246), b=3.26 (3.11 - 3.41), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Nível Trófico (Ref. 69278): 3.6 ±0.4 se; based on diet studies.

Resiliência (Ref. 120179): Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (tm=5-9; tmax=36; K=0.12; Fec=11,000).

Fishing Vulnerability (Ref. 59153): High to very high vulnerability (73 of 100).

Climate Vulnerability (Ref. 125649): High to very high vulnerability (67 of 100).

Categoria de preço (Ref. 80766): Unknown.

Acipenser ruthenus Linnaeus, 1758