Heterozygosity fitness correlations and generation interval of the Norway lobster in the Aegean Sea, eastern Mediterranean

Journal of Biological Research - Thessaloniki

Emmanouil E. Malandrakis¹  Athanasios Exadactylos¹  Elena Mente¹  Marianthi Hatziioannou¹  Georgios A. Gkafas¹  Dimitrios Vafidis¹  Ioannis T. Karapanagiotidis¹  Costas S. Tsigenopoulos² 

[1] Department of Ichthyology and Aquatic Environment, School of Agricultural Sciences, University of Thessaly;Institute of Marine Biology and Genetics, Hellenic Centre for Marine Research;

关键词: Microsatellites;    Carapace length;    Nephrops norvegicus;    Generation interval;    Heterozygosity fitness correlation;    Inbreeding;   

DOI  :  10.1186/s40709-019-0103-0

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown