European sea sturgeon

European sea sturgeon
Conservation status
Critically Endangered (IUCN 2.3)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Acipenseriformes
Family:	Acipenseridae
Genus:	Acipenser
Species:	A. sturio
Binomial name
Acipenser sturio Linnaeus, 1758

The Atlantic or the European Sturgeon (Acipenser sturio), also known as the baltic sturgeon or common sturgeon, is a species of sturgeon found on most coasts of Europe. It is currently a critically endangered species.

The wedge-shaped head of this sturgeon ends in a long point. There are many sensitive barbels on the facial area. The dorsal fins are located very far back on the body. Five longitudinal lines of large osseous plates are found on the body of the fish. The belly is yellow and the back is brownish-grey.

Head

This sturgeon typically measures from 1 to 2 metres (3.3 to 6.6 feet) in length, though some can reach up to 3.5 metres (11.5 feet). Average weight is roughly 150 kg (330 lbs), although they can weigh up to 315 kg (694 lbs). They have a late sexual maturity (12 to 14 years for the males and 16 to 18 years for the females) and can live to 40 years of age.

They are found on the coasts of Europe, except the Black Sea and have even been known to cross the Atlantic Ocean to the coasts of North America. Like many other sturgeons, they spawn in the rivers off the coast.

Also like other sturgeons, they eat shells and crustaceans which they find with their barbels.

At the beginning of the 19th century, these fish were used extensively to produce caviar, but have been a protected species in Europe since 1982.

References

• Sturgeon Specialist Group (1996). Acipenser sturio. 2006. IUCN Red List of Threatened Species. IUCN 2006. www.iucnredlist.org. Retrieved on 10 May 2006. Listed as Critically Endangered (CR A2d v2.3)
• "Acipenser sturio". Integrated Taxonomic Information System. http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=161072. Retrieved 11 March 2006. 
• Froese, Rainer, and Daniel Pauly, eds. (2005). "Acipenser sturio" in FishBase. 10 2005 version.
• Burnie, David, ed. (2001), "European sturgeon", Animal, Dorling Kindersly, pp. 481 

External links

• ARKive - images and movies of the European sea sturgeon(Acipenser sturio)