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

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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.

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          Most cited references43

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          The One-Migrant-per-Generation Rule in Conservation and Management

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            The influence of parental relatedness on reproductive success.

            The relationship between fitness and parental similarity has been dominated by studies of how inbreeding depression lowers fecundity in incestuous matings. A widespread implicit assumption is that adult fitness (reproduction) of individuals born to parents who are not unusually closely related is more or less equal. Examination of three long-lived vertebrates, the long-finned pilot whale, the grey seal and the wandering albatross reveals significant negative relationships between parental similarity and genetic estimates of reproductive success. This effect could, in principle, be driven by a small number of low quality, inbred individuals. However, when the data are partitioned into individuals with above average and below average parental similarity, we find no evidence that the slopes differ, suggesting that the effect is more or less similar across the full range of parental similarity values. Our results thus uncover a selective pressure that favours not only inbreeding avoidance, but also the selection of maximally dissimilar mates.
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              A STUDY OF FLUCTUATING ASYMMETRY

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                Author and article information

                Contributors
                gkafas@uth.gr
                Journal
                J Biol Res (Thessalon)
                J Biol Res (Thessalon)
                Journal of Biological Research
                BioMed Central (London )
                1790-045X
                2241-5793
                8 November 2019
                8 November 2019
                December 2019
                : 26
                : 14
                Affiliations
                [1 ]ISNI 0000 0001 0035 6670, GRID grid.410558.d, Department of Ichthyology and Aquatic Environment, School of Agricultural Sciences, , University of Thessaly, ; Volos, Greece
                [2 ]ISNI 0000 0001 2288 7106, GRID grid.410335.0, Institute of Marine Biology and Genetics, , Hellenic Centre for Marine Research, ; Heraklion, Crete Greece
                Article
                103
                10.1186/s40709-019-0103-0
                6842237
                ab21982b-b649-4b7e-abec-044f8978ce9a
                © The Author(s) 2019

                Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License ( http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

                History
                : 23 May 2019
                : 18 October 2019
                Funding
                Funded by: Operational Program for Fisheries, Hellas
                Categories
                Research
                Custom metadata
                © The Author(s) 2019

                microsatellites,carapace length,nephrops norvegicus,generation interval,heterozygosity fitness correlation,inbreeding

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