A.+gueldenstaedtii



Russian Sturgeon


 * Animal Classification**

Class- Actinopterygii Order- Acipenseriformes Family- Acipenseridae Genus- Acipenser Species- A. gueldenstaedtii


 * Description of Habitat**


 * Location of Ecosystem**

• Caspian Sea, Black Sea and Sea of Azov • Deep water • Bottom-feeding anadromous


 * Physical Habitat Features**

• Cold to temperate waters • Early in their life they live in fresh water and then they migrate to the seas. • Low pH in their water affects their sperm motility


 * Migration Patterns**

• The Russian Sturgeon migrates for feeding and reproduction. Downstream migrations always relate to feeding.


 * Survival Trends of Species**

• The population is decreasing


 * Appearance of Species**

• Body is spindle shape • Reaches 2-4 m of length • Reaches 70-600 kg in weight • Long tail • Sharp tips on back


 * Reproduction**

• Males becomes sexually mature at the age of 11-13 • Females becomes sexually mature at the age of 12-16


 * Food Chain/Web**

• Russian Sturgeons usually feed on insect larvae, crayfish, worms, mollusks, and mainly fish.


 * Works Cited.**

• http://www.environment.gov.au/biodiversity/trade-use/invitecomment/pubs/risk-assessment-russian-sturgeon.pdf • http://en.wikipedia.org/wiki/Russian_sturgeon • http://sturgeons.info/generalinfo/enggueldenstaedtii/enggueldenstaedtii.htm • http://www.cites.org/eng/com/aC/16/16-7-2a3.pdf

Russian Sturgeon Questions

1. Where does the Russian Sturgeon eventually migrate to? 2. How many meters does it reach in length? 3. At what age do females become sexually mature?