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Bridging epidemiology with population genetics in a low incidence MSM-driven HIV-1 subtype B epidemic in Central Europe KU Leuven
The HIV-1 epidemic in Slovenia, a small Central European country, has some characteristics that make it an ideal model to study HIV-1 transmission. The epidemic is predominantly affecting men who have sex with men infected with subtype B (89% of all patients), has a low prevalence (less than 1/1000) and is growing slowly. The aim of the present study was to analyze in detail the evolutionary history and the determinants of transmission.
Conservation genetics of an endemic from the Mediterranean Basin: high genetic differentiation but no genetic diversity loss from the last populations of the Sicilian Grape Hyacinth Leopoldia gussonei Instituut voor Landbouw-, Visserij- en Voedingsonderzoek Universiteit Gent KU Leuven
The Mediterranean Basin is a biodiversity hotspot, housing[11.000 narrowly endemic plant species, many of which are declining due to mass tourism and
agricultural intensification. To investigate the genetic resource impacts of ongoing habitat loss and degradation, we characterized the genetic variation in the last known populations of Leopoldia gussonei, a self-compatible endangered Sicilian Grape Hyacinth numbering less than 3,000 ...
Genetic diversity and population structure in contemporary house sparrow populations along an urbanization gradient Universiteit Gent
Endosymbiont transmission mode in bacterial leaf nodulation as revealed by a population genetic study of Psychotria leptophylla Plantentuin Meise / Agentschap Plantentuin Meise KU Leuven
Leaf-nodulated plants are colonized by vertically inherited bacterial endosymbionts, which maintain symbioses throughout host generations. The permanent character of the interaction implies phylogenetic congruence between the host and the endosymbiont. However, the present population genetic study of Psychotria leptophylla provides evidence for a mixed symbiont transmission involving both vertical inheritance and horizontal transfers from the ...
Genetic diversity and population structure in contemporary house sparrow populations along an urbanization gradient Instituut voor Natuur- en Bosonderzoek
Low impact of present and historical landscape configuration on the genetics of fragmented Anthyllis vulneraria populations Instituut voor Landbouw-, Visserij- en Voedingsonderzoek
Decreasing habitat fragment area and increasing isolation may cause loss of plant population genetic diversity and increased genetic differentiation between populations. We studied the relation between the historical and the present landscape configuration (i.e., patch area and patch connectivity), and the present management of calcareous grassland fragments on the one hand, and the within and between population genetic structure of 18 Anthyllis ...
Sex change and effective population size: implications for population genetic studies in marine fish KU Leuven
Large variance in reproductive success is the primary factor that reduces effective population size (Ne) in natural populations. In sequentially hermaphroditic (sex-changing) fish, the sex ratio is typically skewed and biased towards the 'first' sex, while reproductive success increases considerably after sex change. Therefore, sex-changing fish populations are theoretically expected to have lower Ne than gonochorists (separate sexes), assuming ...
Spatial genetic structure within a metallicolous population of Arabidopsis halleri, a clonal, self-incompatible and heavy-metal-tolerant species Plantentuin Meise / Agentschap Plantentuin Meise
Arabidopsis halleri, a close wild relative of A. thaliana, is a clonal, insect-pollinated herb tolerant to heavy metals (Zn, Pd, Cd) and a hyperaccumulator of Zn and Cd. It is of particular interest in the study of evolutionary processes and phytoremediation. However, little is known about its population gene flow patterns and the structure of its genetic diversity. We used five microsatellite loci to investigate the genetic structure at a fine ...