Long-term changes of sterlet (Acipenser ruthenus) population in the Hungarian section of the Danube

Opuscula Zoologica Instituti Zoosystematici et Oecologici Universitatis Budapestinensis

关键词: Danube;    Sterlet;    Acipenser ruthenus;    Population dynamics;   

DOI  :  

来源: DOAJ

【 摘 要 】

Sturgeons had played an important role in the history of Hungarian fisheries, but due to over-fishing, followed by extensive river regulations and deterioration of habitats, there has been a considerable decrease in populations which are now on the verge of extinction. Sterlet (Acipenser ruthenus) is only a common species caught for commercial and recreational purposes. The main factors of sterlet population dynamics were evaluated according to the new international efforts for sturgeon con¬servation. A moderate correlation was confirmed between the annual sterlet catches and the fluctuation of the hydrological regime of the Danube. Assessment of restocking activity and population recruitment demonstrated low efficiency of remedial measures for the Danubian sterlet.

【 授权许可】

Unknown