Country Species Summary

Acipenser ruthenus in Germany, Fed. Rep.
Sterlet

Acipenser ruthenus Linnaeus, 1758
Family:	Acipenseridae (Sturgeons) , subfamily: Acipenserinae	picture (Acrut_u2.jpg) by Meyer, T.
Order:	Acipenseriformes (sturgeons and paddlefishes)
Class:	Actinopterygii (ray-finned fishes)
FishBase name:	Sterlet
Max. size:	125 cm TL (male/unsexed; Ref. 6866); max. published weight: 16.0 kg (Ref. 593); max. reported age: 20 years
Environment:	demersal; potamodromous ; depth range - 1 m
Climate:	temperate; 72°N - 40°N
Global Importance:	fisheries: commercial; aquaculture: commercial; aquarium: public aquariums
Resilience:	Low, minimum population doubling time 4.5 - 14 years (tm=5-9; tmax=25; K=0.12; Fec=11,000)
Distribution:	Eurasia: Basins of the Black and Caspian seas; Arctic drainages to White and Kara seas and the Sea of Azov. Endangered (Ref. 6866). Appendix III of the Bern Convention (protected fauna). International trade restricted (CITES II, since 1.4.98; CMS Appendix II for Danube population). Found in northern and western Dvina and their tributaries (Ref. 42845).
Diagnosis:	Dorsal spines (total): 13-13; Dorsal soft rays (total): 28-28; Anal spines: 9-9; Anal soft rays: 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)
Biology:	A fluvial fish which inhabits rivers and their tributaries (Ref. 9696). 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. For spawning, the fish choose the main channel of the river, where the current is fast and the bottom is covered with gravel (Ref. 593)
Threatened:	Vulnerable, see IUCN Red List (A1c+2d) , (Ref. 36508)
Dangerous:	harmless
Coordinator:
Main Ref:	Birstein, V.J.. 1993. (Ref. 6866)
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Germany, Fed. Rep. country information
Common names:	Sterlet, Sterlett, Kleiner stöhr, Stierl, Stör, Störl, Sturl, Stürl	Ref: Smolian, K., 1920
Status:	introduced	Ref: Gerstmeier, R. and T. Romig, 1998
Salinity:	freshwater, brackish
Abundance:	scarce (very unlikely)	Ref: Gerstmeier, R. and T. Romig, 1998
Uses:	no uses
Comments:	May have not established (Ref. 27368).
Country Information:	www.cia.gov/cia/publications/factbook/geos/gm.html
Occurrences:	Occurrences Point map
Main Ref:	Blanc, M., J.-L. Gaudet, P. Banarescu and J.-C. Hureau, 1971
National Database:	AGRDEU
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Checked: Froese, Rainer

Modified: Casal, Christine Marie V.

Entered: Reyes, Rodolfo B.

CGNET - US

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

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		(e.g. 9948)		(e.g. cephalopods)
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