Country Species Summary

Acipenser baerii baerii in Germany, Fed. Rep.
Siberian sturgeon

Acipenser baerii baerii Brandt, 1869
Family:	Acipenseridae (Sturgeons) , subfamily: Acipenserinae	picture (Acbae_u1.jpg) by Hippocampus-Bildarchiv
Order:	Acipenseriformes (sturgeons and paddlefishes)
Class:	Actinopterygii (ray-finned fishes)
FishBase name:	Siberian sturgeon
Max. size:	200 cm TL (male/unsexed; Ref. 40476); max. published weight: 100.0 kg (Ref. 40476); max. reported age: 60 years
Environment:	demersal; anadromous; pH range: 7 - 7.5; dH range: 20 ; depth range - 1 m
Climate:	temperate; 10 - 20°C; 74°N - 46°N
Global Importance:	fisheries: highly commercial; aquaculture: commercial; aquarium: public aquariums
Resilience:	Very low, minimum population doubling time more than 14 years (tm=11-17; tmax=60)
Distribution:	Former USSR and Asia: Siberia, rivers Ob, Irtysh, Yenisei, Lena, Kolyma. Some non-migratory populations exist in the Irtysh River system. Insufficiently known and artificially propagated. Endangered in the Indigirka river. International trade restricted (CITES Appendix II, since 1.4.1998).
Diagnosis:	Extended snouts; four barbels in front of the mouth (Ref. 4639). The back is light grey to dark brown colored. The belly color varies from white to clear yellow. Five row s of scutes: 10-19D, 32-59L, 7-16V. Small star-like scutes between the main ones. Clearly slit inferior lip (Ref. 40476).
Biology:	Adults live essentially in freshwater although some fish frequently occur in estuaries. Males are sexually mature between 9-15 years; females between 16-20 years (Ref. 11941). Reported to reach a length of 153 TL (approximately 30,000 g) in the freshwater Shakujii Hatchery (Ref. 9978)
Threatened:	Endangered, see IUCN Red List (A2d) , (Ref. 36508)
Dangerous:	harmless
Coordinator:
Main Ref:	Baillie, J. and B. Groombridge (eds.). 1996. (Ref. 12255)
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Germany, Fed. Rep. country information
Common names:	Sibirischer Stör, Stör	Ref: Bundesanstalt für Landwirtschaft und Ernährung, 2003
Status:	questionable	Ref: Anonymous, 1998
Salinity:	freshwater, brackish, marine
Abundance:	occasional (usually not seen)	Ref: Winkler, H.M., K. Skora, R. Repecka, M. Ploks, A. Neelov, L. Urho, A. Gushin and H. Jespersen, 2000
Regulations:	no regulations	Ref:
Uses:	no uses
Comments:	Introduction and establishment need confirmation. Reported from Kiel Bay and Echernförder Bay in 1996 (Ref. 27975).
Country Information:	www.cia.gov/cia/publications/factbook/geos/gm.html
Occurrences:	Occurrences Point map
Main Ref:	Monnerjahn, U., 1999
National Database:	AGRDEU
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Modified: Froese, Rainer

Entered: Monnerjahn, Ursula

CGNET - US

Page created by: Eli, 20.10.03, last modified by Eli, 26.06.07

	Ref.:		Glossary
		(e.g. 9948)		(e.g. cephalopods)
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