Kazakhstan country information

Common names: Spiny sturgeon
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Introduced in Lake Balkhash (Ref. 41038) from River Syr-Darya (Aral basin) in the 1960s and has established in the lake where it forms a large population (Ref. 59043).
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/kz.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Svetovidov, A.N., 1984
National Database:

Classification / Names

Actinopterygii (ray-finned fishes) > Acipenseriformes (Sturgeons and paddlefishes) > Acipenseridae (Sturgeons) > Acipenserinae
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Шип, 裸腹鲟, Esturgeon barbillons frangés, ... more

Main reference

Bauchot, M.-L. 1987. (Ref. 3397)
References | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 200 cm TL male/unsexed; (Ref. 3397); common length : 132 cm TL male/unsexed; (Ref. 3397); max. published weight: 80.0 kg (Ref. 52332)

Length at first maturity
L_m ? range ? - ? cm

Environment

Marine; freshwater; brackish; demersal; anadromous (Ref. 51243); depth range 30 - 60 m (Ref. 3397)

Climate / Range

Temperate; 10°C - 20°C (Ref. 2059), preferred ?; 57°N - 36°N, 14°E - 53°E

Distribution

Europe: Black, Azov, Caspian and Aral Sea, ascending some rivers (Danube up to Bratislava, Volga up to Kazan, Ural up to Chkalov), unknown or very rare in others. On the verge of extinction in its natural range. Extirpated in Aral basin; nearly extirpated in Black Sea basin; only occasional records from Danube and lower Volga; only a very small population remaining in Rivers Ural (Russia, Kazakhstan) and Rioni (Georgia); no natural spawning population in Iran; established in Lake Balkhash where it forms a large population (Ref. 59043). Artificially propagated (Ref. 6866). International trade restricted (CITES II, since 1.4.98; CMS Appendix II).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 0; Dorsal soft rays (total): 45-57; Anal soft rays: 23 - 37. Snout moderately long and pointed at tip. Lower lip continuous, not interrupted at centre. Barbels halfway between tip of snout and mouth, reaching the latter. Five rows of scutes, dorsal 11-17, lateral 49-70, but usually 55-56 on each side, ventral 10-16, with no smaller plates between dorsal and ventral rows. Color of back grey, flanks lighter, belly white.

Adults occur in the sea close to shores and estuaries and in deep stretches of large rivers over muddy substrate. Are usually solitary. Juveniles live in shallow riverine habitats (Ref. 59043). Feed on mollusks, amphipods and chironomid larvae. Spawning takes place in strong-current habitats in main course of large and deep rivers on stone or gravel bottom (Ref. 59043) from end of April to June (end of May in Rioni River, Black Sea) (Ref. 3193).

IUCN Red List Status (Ref. 115185)

Critically Endangered (CR) (A2cde)

Threat to humans

Harmless

Human uses

Fisheries: commercial; aquaculture: commercial

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Food consumption
Ration

Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development

Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance

References
Aquaculture
Aquaculture profile
Strains
Genetics
Allele frequencies
Heritability
Diseases
Processing
Mass conversion

Collaborators
Pictures
Stamps, Coins
Sounds
Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
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Tools

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Summary page | Point data | Common names | Photos

Internet sources

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD₅₀ = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
3.3 ±0.45 se; Based on food items.

Resilience (Ref. 69278)
Low, minimum population doubling time 4.5 - 14 years (K=0.04-0.12; tmax=30; Fec=165,000)

Vulnerability (Ref. 59153)
Very high vulnerability (85 of 100)

Price category (Ref. 80766)
Unknown

Acipenser nudiventris Lovetsky, 1828