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مجله زیست شناسی اروپای مرکزی 2014
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  • patterns of genetic differentiation and population history of endemic isopods (asellidae) from ancient lake ohrid: combining allozyme and mtdna data

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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 911
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     ancient lakes as places of extensive speciation processes have been characterized by a high degree of endemicity and biodiversity. the most outstanding european ancient lake is the oligotrophic and karstic balkan lake ohrid. the lake is inhabited by a number of endemic species, but their evolutionary history is largely unresolved. in the present study, the genetic structure, gene genealogy and demographic history of the representatives of the ohridian endemic proasellusspecies were studied using both biparentally (allozyme loci) and maternally (partial mitochondrial cytochrome oxidase subunit i gene) inherited markers. both data sets gave similar results and supported discrepancies among genetic differentiation, the current morphology-based taxonomy and bathymetric segregation. horizontal distribution of endemic proasellus species (lake ohrid vsadjacent feeder springs) within the lake presumably promote parapatric speciation whereas the main role of vertical barriers into diversification processes was not fully supported. the analyses of demographic history suggested the decline of endemic isopod populations. the radiation of endemicproasellus populations within the lake could have started from the sublittoral/profundal zone towards the littoral or in the opposite direction — from the littoral to the profundal. our analyses did not exclude both possibilities.

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