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Phylogeography of Rousettus aegyptiacus in the Mediterranean region
Dundarova, Cheliana ; Hulva, Pavel (advisor) ; Janko, Karel (referee)
The genus Rousettus has distributional pattern unique among fruitbats comprising both Asia and Africa and reaching northern distributional limits of the family in Persia, Arabia and Mediterranean basin. This could be ascribed to the ability of echolocation, consequent cave dwelling, and presumably other site-specific adaptations, which enabled dispersal independent of forest block and surviving in Mediterranean type of climate. Using fastly evolving mitochondrial marker, we aimed to assess genetic variability, its geographic distribution and demography of northern populations of the Egyptian fruitbat (Rousettus aegyptiacus). Mitochondrial network indicates deep genetic divergence between disjunct Mediterranean and eastern African parts of the range. Basal position of Sinaic and Jordanian haplotypes within northern clade indicate important role of these regions in colonization of eastern Mediterranean. Generally, the northern haplogroup is moderately diversified with partial geographic localization of particular haplotypes. Significant isolation by distance pattern suggests relatively pronounced site fidelity of particular colonies, at least in terms of maternal gene flow. Landscape genetics analyses indicate discontinuities in distribution of mitochondrial genetic variability, in some cases correlating with...
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Phylogeography of Rousettus aegyptiacus in the Mediterranean region
Dundarova, Cheliana ; Hulva, Pavel (advisor) ; Janko, Karel (referee)
The genus Rousettus has distributional pattern unique among fruitbats comprising both Asia and Africa and reaching northern distributional limits of the family in Persia, Arabia and Mediterranean basin. This could be ascribed to the ability of echolocation, consequent cave dwelling, and presumably other site-specific adaptations, which enabled dispersal independent of forest block and surviving in Mediterranean type of climate. Using fastly evolving mitochondrial marker, we aimed to assess genetic variability, its geographic distribution and demography of northern populations of the Egyptian fruitbat (Rousettus aegyptiacus). Mitochondrial network indicates deep genetic divergence between disjunct Mediterranean and eastern African parts of the range. Basal position of Sinaic and Jordanian haplotypes within northern clade indicate important role of these regions in colonization of eastern Mediterranean. Generally, the northern haplogroup is moderately diversified with partial geographic localization of particular haplotypes. Significant isolation by distance pattern suggests relatively pronounced site fidelity of particular colonies, at least in terms of maternal gene flow. Landscape genetics analyses indicate discontinuities in distribution of mitochondrial genetic variability, in some cases correlating with...
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Phylogeography of Pipistrellus pipistrellus species complex
Chudárková, Adéla ; Hulva, Pavel (advisor) ; Janko, Karel (referee)
(in English) Pipistrellus pipistrellus species complex contains two sympatric species inhabiting Europe and part of West and Central Asia (Pipistrellus pipistrellus s. str, Pipistrellus pygmaeus s. str) and several other lines, isolated in the Mediterranean (North Africa, islands and peninsulas of the Mediterranean Sea). This taxon is a part of the extensive radiation within the genus Pipistrellus, which in today's concept includes about 30 species. Mosaic line of P. pipistrellus complex, located at different stages of diversification and secondary contacts in the Mediterranean biodiversity hotspot, is a suitable model for research on speciation. In this thesis we focused on analyses of distribution, phylogeography, population structure and demography based on mitochondrial data from 323 individuals, representing almost the entire range. Control region of mitochondrial DNA was chosen as a genetic marker. Variability in the 378 pb long fragment acknowledged the existence of several genetically distinct lines whose species status is discussed. Observed fylogeografic pattern confirms the existence of groups of radiation centers in the Mediterranean region. An allopatric speciation was there, two of the lines (P. pipistrellus s. str and P. pygmaeus s. str.) later expanded into Europe and their ranges...
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