Genetic population structure of the critically endangered stellate sturgeon ( <scp> <i>Acipenser stellatus</i> </scp> ) in the Black Sea basin: Implications for conservation

Stellate sturgeon (Acipenser stellatus) is a species of great conservation concern throughout its range. Over the past century, it has experienced dramatic decline in abundance and distribution Black Sea basin. Information regarding genetic structure very limited region, despite crucial importance for developing adequate management plans species’ recovery. Samples from 163 A. stellatus were analysed using mitochondrial microsatellite DNA markers to investigate characteristics north-western southern Sea. Both revealed high diversity (153 haplotypes 264 alleles) low differentiation marine freshwater catches. The population undergoing slight demographic expansion after bottleneck event induced by overfishing dam constructions. indicates single cluster region signs admixture two clusters region. It also provides first evidence remnant reproductive stellate micro-population rivers Turkey Georgia. A fishing ban stocking activities carried out during last decades, largely without any prior assessment populations, added little value. Outreach initiatives urgent actions are required foster recovery this Critically Endangered Reconstruction connectivity enhancement habitats spawning grounds beneficial all species. An ex-situ programme Turkish which flow into would be help conserve resources until migration routes become functional. Moreover, screening recruitment programmes must functional flowing