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ABSTRACT: Background
Comprehensively detailed information on population dynamics for benthic species is crucial since potential admixture of individuals could shift the genetic subdivision and age structure during a full breeding period. The apparent genetic impact of the potential recruitment strategy of Norway lobster Nephrops norvegicus is still under research. For this reason the present study was focused on genetic variation of the species over a given continuous year period in a semi-enclosed gulf of the Aegean Sea.Results
Analyses revealed that the relative smaller size class in females and the apparent faster growth of males may represent a key-role differential strategy for the two sexes, whereas females tend to mature slower. Heterozygosity fitness correlations (HFCs) showed substantially significant associations suggesting that inbreeding depression for females and outbreeding depression for males are the proximate fitness mechanisms, respectively.Conclusions
Nephrops norvegicus uniformal genetic composition (background of high gene flow), could be attributed to potential population recolonization, due to a hypothesized passive larval movement from deeper waters, which may suggest that some offspring of local residents and potential male non-breeders from other regions admixture randomly.
SUBMITTER: Gkafas GA
PROVIDER: S-EPMC6842237 | biostudies-literature | 2019 Dec
REPOSITORIES: biostudies-literature
Gkafas Georgios A GA Hatziioannou Marianthi M Malandrakis Emmanouil E EE Tsigenopoulos Costas S CS Karapanagiotidis Ioannis T IT Mente Elena E Vafidis Dimitrios D Exadactylos Athanasios A
Journal of biological research (Thessalonike, Greece) 20191108
<h4>Background</h4>Comprehensively detailed information on population dynamics for benthic species is crucial since potential admixture of individuals could shift the genetic subdivision and age structure during a full breeding period. The apparent genetic impact of the potential recruitment strategy of Norway lobster <i>Nephrops norvegicus</i> is still under research. For this reason the present study was focused on genetic variation of the species over a given continuous year period in a semi- ...[more]