Shurulinkov P.,Bulgarian Academy of Science |
Stoyanov G.,Center for Conservation and Support of the Wild Fauna Durrell |
Komitov E.,Regional Directorate of Forestry Smolyan |
Daskalova G.,Bulgarian Society for Protection of Birds |
Ralev A.,Balkani Wildlife Society
Acta Zoologica Bulgarica | Year: 2012
The article presents actual data on the status, distribution and habitats of some endangered species of owls and woodpeckers in the western part of Mt. Rhodopes, South Bulgaria. Both groups of birds were detected and attracted using imitations of their calls. A total of 30 territories of Tengmalm's Owl (Aegolius funereus) and 37 territories of Pigmy Owl (Glaucidium passerinum) were found. Tengmalm's Owl was found in coniferous forests between 1202 and 1800 m a. s. l. Out of 25 localities with described habitat 13 were in mixed Spruce-Beech-Scots Pine forest. Pigmy Owl was found in coniferous and mixed forests between 1412 m and 1930 m, predominantly Spruce (58%) and Spruce-Scots Pine (28%). The population density of Pigmy Owl in optimal habitats in W Rhodopes was calculated to be 2.18 occupied territories/1000 ha. Three-toed Woodpecker (Picoides tridactylus) was registered in 16 localities, all of them in predominantly Spruce forests, at altitudes between 1570 and 2100 m. The percent of dry trees in the species habitat wasnot less than 2% of the stand, usually between 4 and 40%, including many 'bark beetle' spots-groups of dry trees, attacked massively by bark beetles. The total population density of Three-toed Woodpec ker in W Rhodopes was calculated to be 1.5 pairs/1000 ha of prime habitat, but it could reach locally up to 10.6 pairs/1000 ha ('Mantaritsa' reserve) and 8.2 pairs/1000 ha (Syutkia massif). White-backed Woodpecker (Dendrocopos leucotos lilfordi) was registered in 19 localities. The total population density of the species was 3.4 pairs/1000 ha. It varied from 2.6 pairs/1000 ha at border parts of Zhulti dyal and Gorna Arda to 4.0 pairs/1000 ha for northern slopes of Batashka Mt. The species was detected mainly in Beech forests, aged 80-140 years, with many dying and dry trees and holes, between 1030 and 1579 m. Grey-headed Woodpecker (Picus canus) and Black Woodpecker (Dryocopus martius) were widely distributed in various habitats in all studied parts of W Rhodopes.
Nowak C.,Senckenberg Institute |
Domokos C.,Milvus Group Bird and Nature Protection Association |
Dutsov A.,Balkani Wildlife Society |
Frosch C.,Senckenberg Institute
Conservation Genetics | Year: 2014
We tested the hypothesis that brown bears were translocated from the Romanian Carpathians to Bulgaria via air transportation during the communist regime in the 1970s and 1980s. Microsatellite analysis was performed on 199 bear samples from Bulgaria and Romania. Assignment and admixture tests revealed the existence of seven genotypes (=2.8 %) in Bulgaria that were assigned with high probabilities to the Romanian population, supporting the translocation and successful establishment of Carpathian bears in Bulgaria. While we cannot rule out the possibility that active long-distance dispersal contributed to the observed pattern, the spatial distribution and sex ratio of the detected Romanian genotypes strongly favor the translocation hypothesis. © 2014 Springer Science+Business Media Dordrecht.
Moura A.E.,Durham University |
Moura A.E.,University of Lincoln |
Tsingarska E.,Balkani Wildlife Society |
Dabrowski M.J.,Polish Academy of Sciences |
And 4 more authors.
Conservation Genetics | Year: 2014
European wolf (Canis lupus) populations have suffered extensive decline and range contraction due to anthropogenic culling. In Bulgaria, although wolves are still recovering from a severe demographic bottleneck in the 1970s, hunting is allowed with few constraints. A recent increase in hunting pressure has raised concerns regarding long-term viability. We thus carried out a comprehensive conservation genetic analysis using microsatellite and mtDNA markers. Our results showed high heterozygosity levels (0.654, SE 0.031) and weak genetic bottleneck signals, suggesting good recovery since the 1970s decline. However, we found high levels of inbreeding (FIS = 0.113, SE 0.019) and a Ne/N ratio lower than expected for an undisturbed wolf population (0.11, 95 % CI 0.08-0.29). We also found evidence for hybridisation and introgression from feral dogs (C. familiaris) in 10 out of 92 wolves (9.8 %). Our results also suggest admixture between wolves and local populations of golden jackals (C. aureus), but less extensive as compared with the admixture with dogs. We detected local population structure that may be explained by fragmentation patterns during the 1970s decline and differences in local ecological characteristics, with more extensive sampling needed to assess further population substructure. We conclude that high levels of inbreeding and hybridisation with other canid species, which likely result from unregulated hunting, may compromise long-term viability of this population despite its current high genetic diversity. The existence of population subdivision warrants an assessment of whether separate management units are needed for different subpopulations. Our study highlights conservation threats for populations with growing numbers but subject to unregulated hunting. © 2013 The Author(s).
Pilot M.,Polish Academy of Sciences |
Branicki W.,Institute of Forensic Research |
Branicki W.,Jagiellonian University |
Jedrzejewski W.,Polish Academy of Sciences |
And 5 more authors.
BMC Evolutionary Biology | Year: 2010
Background. While it is generally accepted that patterns of intra-specific genetic differentiation are substantially affected by glacial history, population genetic processes occurring during Pleistocene glaciations are still poorly understood. In this study, we address the question of the genetic consequences of Pleistocene glaciations for European grey wolves. Combining our data with data from published studies, we analysed phylogenetic relationships and geographic distribution of mitochondrial DNA haplotypes for 947 contemporary European wolves. We also compared the contemporary wolf sequences with published sequences of 24 ancient European wolves. Results. We found that haplotypes representing two haplogroups, 1 and 2, overlap geographically, but substantially differ in frequency between populations from south-western and eastern Europe. A comparison between haplotypes from Europe and other continents showed that both haplogroups are spread throughout Eurasia, while only haplogroup 1 occurs in contemporary North American wolves. All ancient wolf samples from western Europe that dated from between 44,000 and 1,200 years B.P. belonged to haplogroup 2, suggesting the long-term predominance of this haplogroup in this region. Moreover, a comparison of current and past frequencies and distributions of the two haplogroups in Europe suggested that haplogroup 2 became outnumbered by haplogroup 1 during the last several thousand years. Conclusions. Parallel haplogroup replacement, with haplogroup 2 being totally replaced by haplogroup 1, has been reported for North American grey wolves. Taking into account the similarity of diets reported for the late Pleistocene wolves from Europe and North America, the correspondence between these haplogroup frequency changes may suggest that they were associated with ecological changes occurring after the Last Glacial Maximum. © 2010 Pilot et al; licensee BioMed Central Ltd.
Frosch C.,Senckenberg Research Institutes |
Dutsov A.,Balkani Wildlife Society |
Georgiev G.,Regional Environmental Inspectorate of Ministry of Environment and Water Smolyan 16 |
Nowak C.,Senckenberg Research Institutes |
Nowak C.,Biodiversity and Climate Research Center
Forensic Science International: Genetics | Year: 2011
Fatal bear attacks on humans are extremely rare across Europe. Here we report a fatal bear attack on a man in Bulgaria. We used microsatellite analysis for bear individualization based on hair samples found near the man's corpse. The genetic profile of the killing bear was compared to that of a bear shot three days later near the killing scene. Our results show that the wrong bear has been shot. Shortly after our results were reported a second person was attacked by a bear nearby. This case documents the importance of forensic DNA analysis following severe wildlife attacks in order to improve wildlife management actions in regions were direct human-bear conflicts are likely to happen. © 2011 Elsevier Ireland Ltd. All rights reserved.