Journal Article10.1017/S0025315414000174
Microsatellite variation of mussels (Mytilus galloprovincialis) in central and eastern Mediterranean: genetic panmixia in the Aegean and the Ionian Seas
TL;DR: Lack of isolation by distance and markedly low genetic differentiation between the nine Greek sampling sites was revealed by Mantel tests, FST values, exact tests and analyses of molecular variance, indicating that mussels from these regions are either at or close to panmixia.
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Abstract: Genetic variation of mussels Mytilus galloprovincialis in central–eastern Mediterranean Sea is investigated in this study. A total of 550 individuals sampled from two cultured and 11 wild populations from Italy, Croatia, Greece and Turkey were genotyped at 10 microsatellite loci. Significant deviations from Hardy–Weinberg expectations were observed in more than 75% of the tests performed. All populations showed extensive heterozygote deficits, which remained at significant levels even after correction for null alleles, providing evidence that null alleles were only partly responsible for deviations from Hardy–Weinberg equilibrium in these molluscs. Moreover, null alleles seem to have limited influence on the population genetic differentiation. Similar levels of multi-locus heterozygosity and allelic richness were observed in all populations, cultured and wild, implying the sustainability of the exploited populations. Lack of isolation by distance and markedly low genetic differentiation between the nine Greek sampling sites (shoreline >1000 km) was revealed by Mantel tests, FST values, exact tests and analyses of molecular variance, indicating that mussels from these regions are either at or close to panmixia. Similarly, patterns of genetic homogeneity were also found between the two Italian samples, whereas the observed genetic differentiation of the populations from Turkey and Croatia probably reflects the specific topographic and oceanographic conditions of these regions.
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Development of a Medium Density Combined-Species SNP Array for Pacific and European Oysters (Crassostrea gigas and Ostrea edulis)
Alejandro P. Gutierrez,Frances Turner,Karim Gharbi,Richard Talbot,Natalie R Lowe,Carolina Peñaloza,Mark McCullough,Paulo A. Prodöhl,Tim P. Bean,Ross D. Houston +9 more
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The Implication of Vibrio Bacteria in the Winter Mortalities of the Critically Endangered Pinna nobilis.
Athanasios Lattos,Konstantina Bitchava,Ioannis A. Giantsis,John A. Theodorou,Costas Batargias,Basile Michaelidis +5 more
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TL;DR: In this article, the authors evaluated the health status of the Pinna nobilis population in the Aegean Sea after the mass mortalities that occurred in 2019 and found evidence that Vibrio bacterial species are directly implicated in the winter mortalities, particularly in cases where the haplosporidian parasite was absent.
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Octopus vulgaris (Cuvier, 1797) in the Mediterranean Sea: Genetic Diversity and Population Structure.
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Gardeström J., Pereyra R., André C. Characterization of six microsatellite loci in the Baltic Blue mussel Mytilus trossulus and cross-species amplification in North Sea Mytilus edulis
TL;DR: The blue mussel Mytilus trossulus occurs in the Pacific and in the North Atlantic and six microsatellite loci were developed and characterized for Baltic M. trossulus, of which six were polymorphic and four of the six were successfully amplified.
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