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

Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | 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 Écologie

; eau douce; saumâtre démersal; potamodrome (Ref. 51243); profondeur 1 - ? m. Temperate; 71°N - 36°N, 11°E - 111°E (Ref. 124675)

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | 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 / Taille / Poids / Âge

Maturity: L_m 42.8, range 40 - 45 cm
Max length : 125 cm TL mâle / non sexé; (Ref. 6866); common length : 40.0 cm TL mâle / non sexé; (Ref. 556); poids max. publié: 16.0 kg (Ref. 593); âge max. reporté: 20 années (Ref. 556)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Épines dorsales (Total) : 13; Rayons mous dorsaux (Total) : 28; Épines anales: 9; Rayons mous anaux: 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 | Reproduction | Spawnings | Egg(s) | Fecundities | Larves

Scatters eggs on gravel.

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

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

Statut dans la liste rouge de l'IUCN (Ref. 130435)

Menacé (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

Menace pour l'homme

Harmless

Utilisations par l'homme

Pêcheries: commercial; Aquaculture: commercial; Aquarium: Aquariums publics

FAO(Aquaculture systems: production; pêcheries: production, Résumé espèce; 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).

Niveau trophique (Ref. 69278): 3.6 ±0.4 se; based on diet studies.

Résilience (Ref. 120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (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).

Catégorie de prix (Ref. 80766): Unknown.

Acipenser ruthenus Linnaeus, 1758