Search

Microsatellites were used to investigate population genetic structure of Atlantic bonito Sarda sarda from the Black Sea, Marmara Sea, Aegean Sea, north-eastern Mediterranean Sea and Adriatic Sea. Overall average observed heterozygosity was high (0.93). Average observed heterozygosity per locus ranged from 0.79 to 0.98. Pairwise F ST estimates for all loci between populations ranged from 0 to 0.07626, and significant F ST values (P < 0.001) were detected between populations; the Blacks Sea and Marmara Sea samples were not significantly different from each other, but significant different from the other samples, and Aegean Sea and north-eastern Mediterranean Sea samples were also not significantly different from each other, but significantly different from all other samples. The Adriatic Sea sample was significant different from all other samples. The Mantel test revealed a significant (P < 0.001, r = 0.68) isolation-by-distance for these 11 populations. Neighbour-joining analysis clustered the Black Sea and Marmara Sea samples together while collections from Aegean Sea and north-eastern Mediterranean Sea were clustered close to each other and far from the others. On the other hand, the Adriatic Sea collection presented very distinctive relationship from the others. [ABSTRACT FROM AUTHOR]

In this study, two individuals of the angular rough shark Oxynotus centrina as discard by a commercial trawler were examined. Gravid female of this species was recorded for the first time from the northeastern Mediterranean. Occurrence of a gravid female and adult male of O. centrina in the northeastern Mediterranean Sea strongly indicates that there is a nursery area in this region, and mating probably occurs. [ABSTRACT FROM AUTHOR]

The distribution of some heavy metals in the muscle tissue of Merlangius merlangus (whiting), Mullus barbatus (red mullet), Engraulis encrasicholus (anchovy) from Black and Mediterranean Seas were studied. The highest Al (95.313 microg/g dw), Mn (1.390 microg/g dw), Zn (25.416 microg/g dw) concentration was detected in E. encrasicholus from Black Sea; the highest Li (3.200 microg/g dw) concentration was detected in E. encrasicholus from Mediterranean Sea; the highest Cd (1.685 microg/g dw) concentration was detected in M. merlangus from Mediterranean Sea; the highest Ni (1.363 microg/g dw) concentration was detected in M. merlangus from Black Sea; the highest Pb (0.727 microg/g dw) concentration was detected in M. barbatus from Black Sea and the highest Cr (1.893 microg/g dw), Fe (21.901 microg/g dw) concentration was detected in M. barbatus from Mediterranean Sea.