engleski

Population structure and genetic diversity of the European lobster (Homarus gammarus)

The European lobster (H. gammarus) inhabits whole Adriatic Sea and has high market value. Therefore, fishing pressure on this species is very high and intense. We used microsatellite genotyping to assess population structure of European lobster. Nine populations were genotyped using 15 microsatellite loci divided in three multiplex. Seven populations were from Adriatic Sea, one from Aegean Sea (Greece) and one from Corsica (France), covering the central and eastern Mediterranean regions. Allelic richness per locus ranged from 5.59 ± 1.76 to 6.36 ± 1.53 while the inbreeding coefficient (FIS) was highest in sampled population near Pula (0, 035). The low global FST (0.00819) among populations was noted, with pairwise comparisons only been significant for Adriatic- Aegean and Adriatic-Tyrrhenian samples. Such high gene flow within the Adriatic basin and slight gene break toward other basins has been further confirmed by Bayesian clustering analysis where samples clustered in accordance to the basin origin. To our best knowledge, population structure of European lobster within the Adriatic was investigated here for the first time, aiming to detect potential impact of high fishing pressure on genetic level and to provide recommendations for better management.

European lobster ; population structure ; genetic diversity ; microsateliites

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