BIOLOGICAL ASPECTS OF MAIN MARINE MIGRATORY STURGEONS IN ROMANIAN DANUBE RIVER MIGRATION OF FISHES IN ROMANIAN DANUBE RIVER, № 4

• Main Authors: A. Ciolac, N. Patriche
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2004
• Subjects: migratory sturgeons; biology; migration; biometric data; Beluga; Beluga*
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.539.8927; http://www.ecology.kee.hu/pdf/0302_101106.pdf

Abstract. Marine migratory sturgeons form one of the most valuable fish population of the Lower Danube River ecosystem and are also extremely important for the economy of Romania and some other riverside countries and freshwater fisheries. Decreasing sturgeon presence in the last several decades has been a true concern either for commercial fishermen and biologists. This paper is trying to analyze some biological aspects of three sturgeon species: beluga (Huso huso Linnaeus, 1758), Russian sturgeon (Acipenser guelden-staedti Brand, 1833) and stellate sturgeon (Acipenser stellatus, Brandt, 1833) and to compare them with formerly registered data and scientific information. This paper also tries to reveal some ecological particu-larities concerning their migration and natural reproduction process that could help scientists and other people to find the most probable causes of the tendency why stocks are decreasing and suggesting some pertinent actions to be done on the necessary mitigation and protection activities concerning actual and further presence of these very interesting sturgeon species in Danube River.