Gkafas Georgios A, Hatziioannou Marianthi, Malandrakis Emmanouil E, Tsigenopoulos Costas S, Karapanagiotidis Ioannis T, Mente Elena, Vafidis Dimitrios, Exadactylos Athanasios
1Department of Ichthyology and Aquatic Environment, School of Agricultural Sciences, University of Thessaly, Volos, Greece.
2Institute of Marine Biology and Genetics, Hellenic Centre for Marine Research, Heraklion, Crete Greece.
J Biol Res (Thessalon). 2019 Nov 8;26:14. doi: 10.1186/s40709-019-0103-0. eCollection 2019 Dec.
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 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.
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.
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.
底栖物种种群动态的全面详细信息至关重要，因为在整个繁殖期个体的潜在混合可能会改变遗传细分和年龄结构。挪威龙虾潜在补充策略的明显遗传影响仍在研究中。因此，本研究聚焦于爱琴海中一个半封闭海湾内该物种在给定连续年份期间的遗传变异。
分析表明，雌性相对较小的体型类别以及雄性明显更快的生长速度可能代表了两性的关键差异策略，而雌性成熟往往较慢。杂合度适应性相关性（HFCs）显示出显著关联，表明雌性的近亲繁殖衰退和雄性的远亲繁殖衰退分别是直接的适应性机制。
由于假设幼虫从更深水域被动移动导致潜在的种群重新定殖，均匀的遗传组成（高基因流背景）可能由此产生，这可能表明当地居民的一些后代与来自其他地区的潜在雄性非繁殖者随机混合。
