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    Circum-Mediterranean phylogeography of a bat coupled with past environmental niche modeling: A new paradigm for the recolonization of Europe?
    (ACADEMIC PRESS INC ELSEVIER SCIENCE, 2016) Bilgin, Rasit; Gurun, Kanat; Rebelo, Hugo; Puechmaille, Sebastien J.; Maraci, Oncu; Presetnik, Primoz; Karatas, Ahmet
    The isolation of populations in the Iberian, Italian and Balkan peninsulas during the ice ages define four main paradigms that explain much of the known distribution of intraspecific genetic diversity in Europe. In this study we investigated the phylogeography of a wide-spread bat species, the bent-winged bat, Miniopterus schreibersii around the Mediterranean basin and in the Caucasus. Environmental Niche Modeling (ENM) analysis was applied to predict both the current distribution of the species and its distribution during the last glacial maximum (LGM). The combination of genetics and ENM results suggest that the populations of M. schreibersii in Europe, the Caucasus and Anatolia went extinct during the LGM, and the refugium for the species was a relatively small area to the east of the Levantine Sea, corresponding to the Mediterranean coasts of present-day Syria, Lebanon, Israel, and northeastern and northwestern Egypt. Subsequently the species first repopulated Anatolia, diversified there, and afterwards expanded into the Caucasus, continental Europe and North Africa after the end of the LGM. The fossil record in Iberia and the ENM results indicate continuous presence of Miniopterus in this peninsula that most probably was related to the Maghrebian lineage during the LGM, which did not persist afterwards. Using our results combined with similar findings in previous studies, we propose a new paradigm explaining the general distribution of genetic diversity in Europe involving the recolonization of the continent, with the main contribution from refugial populations in Anatolia and the Middle East. The study shows how genetics and ENM approaches can complement each other in providing a more detailed picture of intraspecific evolution. (C) 2016 Elsevier Inc. All rights reserved.
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    Molecular ecology and phylogeography of the bent-wing bat complex (Miniopterus schreibersii) (Chiroptera: Vespertilionidae) in Asia Minor and adjacent regions
    (WILEY, 2009) Furman, Andrzej; Coraman, Emrah; Bilgin, Rasit; Karatas, Ahmet
    In this study we investigate population genetic structure and phylogeography of the bent-wing bat complex (Miniopterus schreibersii) in Asia Minor and adjacent regions. PCR amplification and sequencing of the first hypervariable domain of the mitochondrial control region were used to obtain the genetic data. Morphometric differentiation between lineages was analysed by comparing forearm lengths. We found two reciprocally monophyletic lineages within the M. schreibersii complex, identified as M. s. schreibersii and M. s. pallidus. Distributions of the lineages were allopatric with a U-shaped suture zone passing through Central Anatolia. The suture zone separated coastal regions occupied by M. s. schreibersii from inland, higher altitude regions occupied by M. s. pallidus. The lineages showed a considerable sequence divergence of c. 9%, accompanied by a corresponding difference in forearm length. The presence of the genetically distinct lineages, with allopatric distribution and corresponding morphometric differences, probably reflects their long isolation during the ice-age in the Balkans and the Caspian/Caucasus refugia, followed subsequently by expansion into different habitats. Based on the present data, the lineages can be recognized as evolutionary significant units.
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    Phylogeographic analysis of Anatolian bats highlights the importance of the region for preserving the Chiropteran mitochondrial genetic diversity in the Western Palaearctic
    (SPRINGER, 2013) Coraman, Emrah; Furman, Andrzej; Karatas, Ahmet; Bilgin, Rasit
    Identification of intraspecific conservation units and incorporating the distribution of genetic diversity into management plans are crucial requirements for assessing effective protection strategies. This study investigates the phylogeographic structures of 33 bat species present in the Near East in order to evaluate the conservation implications of their intraspecific genetic diversity both at regional and large-scale levels. To compare Anatolian populations with the European ones, we utilized two commonly used mitochondrial markers, Cytb and ND1, and analysed them together with the available sequences from GenBank. The management requirements of the identified clades and their taxonomical relations were evaluated by analysing their distributions and the levels of their genetic differentiations. In 12 species and the large Myotis complex, we identified a total of 15 genetically distinct populations found in the Near East, some of which might represent biologically distinct taxa. Comparing the phylogeographic patterns of different taxa indicates that three regions, the Balkans, the Caucasus, and the southern Anatolia, harbour genetically divergent populations and should have higher priority in conservation practices. Considering that Turkey has one of the richest bat fauna in the Mediterranean region and the Anatolian populations of various species are genetically distinct, protecting populations in Turkey is critically important for preserving the genetic diversity of the bats in the Western Palaearctic. Both regional and large-scale conservation strategies, which incorporate the distribution of genetic diversity, should be assessed and further ecological studies are needed to clarify the taxonomic relations of the identified clades.
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    Phylogeography of the greater horseshoe bat, Rhinolophus ferrumequinum (Chiroptera: Rhinolophidae), in southeastern Europe and Anatolia, with a specific focus on whether the Sea of Marmara is a barrier to gene flow
    (POLISH ACAD SCIENCES, 2009) Bilgin, Rasit; Coraman, Emrah; Karatas, Ahmet; Morales, Juan Carlos
    Population differentiation during the ice ages, followed by range expansions has significantly contributed to the geographic distribution patterns of the genetic diversity in Europe. In this regard, the Iberian, Italian, Balkan peninsulas and Anatolia comprise important glacial refugia. In different parts of Anatolia, suture zones, where lineages that diverged in the different glacial refugia met again, were observed for several species. In this study, we investigated the mitochondrial genetic differentiation of the greater horseshoe bat, Rhinolophus ferrumequinum in southeastern Europe and Anatolia. The mitochondrial DNA analyses indicated a suture zone in central Anatolia, similar to those recorded in other animal species, showing the presence of more than one refugium within the region. The time of the split of these lineages that diverged in allopatry was dated to the Pleistocene. However, the location of this suture zone did not coincide with the Sea of Marmara, not supporting a recent hypothesis, based on microsatellite data, which states that this water body might be an impediment to post glacial gene flow in this species.
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    Regionally and climatically restricted patterns of distribution of genetic diversity in a migratory bat species, Miniopterus schreibersii (Chiroptera : Vespertilionidae)
    (BMC, 2008) Bilgin, Rasit; Karatas, Ahmet; Coraman, Emrah; Disotell, Todd; Morales, Juan Carlos
    Background: Various mechanisms such as geographic barriers and glacial episodes have been proposed as determinants of intra-specific and inter-specific differentiation of populations, and the distribution of their genetic diversity. More recently, habitat and climate differences, and corresponding adaptations have been shown to be forces influencing the phylogeographic evolution of some vertebrates. In this study, we examined the contribution of these various factors on the genetic differentiation of the bent-winged bat, Miniopterus schreibersii, in southeastern Europe and Anatolia. Results and conclusion: Our results showed differentiation in mitochondrial DNA coupled with weaker nuclear differentiation. We found evidence for restriction of lineages to geographical areas for hundreds of generations. The results showed that the most likely ancestral haplotype was restricted to the same geographic area ( the Balkans) for at least 6,000 years. We were able to delineate the migration routes during the population expansion process, which followed the coasts and the inland for different nested mitochondrial clades. Hence, we were able to describe a scenario showing how multiple biotic and abiotic events including glacial periods, climate and historical dispersal patterns complemented each other in causing regional and local differentiation within a species.