The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Kyung Seok Kim - One of the best experts on this subject based on the ideXlab platform.
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genetic diversity and genetic structure of the siberian roe deer Capreolus pygargus populations from asia
BMC Genetics, 2015Co-Authors: Yun Sun Lee, Inna Voloshina, Nickolay Markov, Alexander Argunov, Damdingiin Bayarlkhagva, Yongsu Park, Misook Min, Hang Lee, Kyung Seok KimAbstract:Background The roe deer, Capreolus sp., is one of the most widespread meso-mammals of Palearctic distribution, and includes two species, the European roe deer, C. Capreolus inhabiting mainly Europe, and the Siberian roe deer, C. pygargus, distributed throughout continental Asia. Although there are a number of genetic studies concerning European roe deer, the Siberian roe deer has been studied less, and none of these studies use microsatellite markers. Natural processes have led to genetic structuring in wild populations. To understand how these factors have affected genetic structure and connectivity of Siberian roe deer, we investigated variability at 12 microsatellite loci for Siberian roe deer from ten localities in Asia.
Atle Mysterud - One of the best experts on this subject based on the ideXlab platform.
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roe deer Capreolus Capreolus browsing pressure affects yew taxus baccata recruitment within nature reserves in norway
Biological Conservation, 2004Co-Authors: Atle Mysterud, Eivind OstbyeAbstract:Grazing and browsing by large herbivores is known to affect patterns of biodiversity. Still much remains to be done to assess the specific role of browsing on single, red listed plant species. In Norway, the yew (Taxus baccata) is a threatened species and several nature reserves have been established. We show, that within two nature reserves between 1988 and 2003, yew recruitment was strongly dependent on variation in roe deer (Capreolus Capreolus) browsing pressure. Our study emphasized that establishing nature reserves for yew is not enough to conserve this species unless control over browsing roe deer population is also taken. We argue that roe deer, being the most abundant large herbivore in Europe, may have a larger effect on conservation than currently realized.
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habitat selection by roe deer and sheep does habitat ranking reflect resource availability
Canadian Journal of Zoology, 1999Co-Authors: Atle Mysterud, Per Kristian Larsen, Eivind OstbyeAbstract:Habitat ranking is often assumed to reflect food availability, but habitat selection may involve trade-offs, for example, between selecting for food or cover. We tested whether the habitat selection of 27 radio-collared European roe deer (Capreolus Capreolus) and 10 free-ranging domestic sheep (Ovis aries) on a forest range in southern Norway reflected resource availability. We predicted that ruminants of different feeding types would use habitats according to the main forage class, but that antipredator behavior might remove the correlation between habitat selection and food availability, thus making temporal and spatial scaling crucial. As predicted, habitat selection by sheep was highly correlated with grass availability on both the home-range and study-area scales. The habitat ranking of roe deer habitat selection did not correlate with the availability of herbs on either scale, but rather was correlated with the availability of canopy cover. We found a clear effect of temporal scale on habitat selection by roe deer. During summer, roe deer used forest habitats with more forage to a greater extent when they were active than when they were inactive, and tended to use habitats with greater availability of herbs at night. We conclude that scale-dependent trade-offs in habitat selection may cause inconsistent habitat rankings when pooled across temporal and spatial scales. Resume : On assume generalement que le rang de preference d'un habitat reflete la disponibilite de la nourriture qui s'y trouve, alors que la selection d'un habitat suppose sans doute souvent des compromis, par exemple entre le choix de nourriture et la couverture. Nous avons suivi 27 Chevreuils (Capreolus Capreolus) munis d'un collier emetteur et
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seasonal migration pattern and home range of roe deer Capreolus Capreolus in an altitudinal gradient in southern norway
Journal of Zoology, 1999Co-Authors: Atle MysterudAbstract:Seasonal migration pattern and home range of radio-collared roe deer (Capreolus Capreolus) were studied in Lier, Norway, an area with a steep altitudinal gradient and a low population density of deer. Roe deer conformed to the usual pattern of temperate cervids with migration to low elevations during winter. Summer home-range size increased with increasing altitude, and only a small proportion of individuals had home ranges at high altitudes. It is concluded that these high elevation areas were probably of low quality. Time of spring migration was later in deer with a high elevation summer range. A lower frequency of females (30.0%) than males (61.5%) was stationary, and more females (30.0%) than males (0%) were long distance migrators (> 10 km). This supports an earlier hypothesis that migration patterns of roe deer are also influenced by social factors.
Christian Gortázar - One of the best experts on this subject based on the ideXlab platform.
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temporal stability in the genetic structure of sarcoptes scabiei under the host taxon law empirical evidences from wildlife derived sarcoptes mite in asturias spain
Parasites & Vectors, 2011Co-Authors: Alvaro Oleaga, Annarita Molinar Min, Ramón C. Soriguer, Samer Alasaad, Luca Rossi, Rosa Casais, Christian GortázarAbstract:Background Implicitly, parasite molecular studies assume temporal genetic stability. In this study we tested, for the first time to our knowledge, the extent of changes in genetic diversity and structure of Sarcoptes mite populations from Pyrenean chamois (Rupicapra pyrenaica) in Asturias (Spain), using one multiplex of 9 microsatellite markers and Sarcoptes samples from sympatric Pyrenean chamois, red deer (Cervus elaphus), roe deer (Capreolus Capreolus) and red fox (Vulpes vulpes).
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sarcoptic mange in two roe deer Capreolus Capreolus from northern spain
European Journal of Wildlife Research, 2008Co-Authors: Alvaro Oleaga, Ana Balseiro, Christian GortázarAbstract:Sarcoptic mange, a disease shared with domestic goat and sheep, affects chamois (Rupicapra pyrenaica parva) in northern Spain. Recent evidences suggest that mange may be emerging among deer in this region. This communication describes two cases of fatal sarcoptic mange affecting roe deer (Capreolus Capreolus) stags in Asturias (Northern Spain) in 2006. Both animals were in poor body condition and no significant lesions other than those caused by the mites were observed. Alopecia, along with cutaneous crusts and hyperkeratosis were present in head, neck, trunk, and legs, affecting almost all the body surface. Numerous Sarcoptes scabiei mites were isolated from the skin. To the best of our knowledge, this is the first detailed description of fatal sarcoptic mange in European roe deer.
Johan Höglund - One of the best experts on this subject based on the ideXlab platform.
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Development of a multiplex PCR for identification of Dictyocaulus lungworms in domestic and wild ruminants.
Parasitology research, 2015Co-Authors: Anna M. Pyziel, Zdzisław Laskowski, Johan HöglundAbstract:Dictyocaulus lungworms are the causative agents of parasitic bronchitis (dictyocaulosis) characterised by coughing and severe lung pathology in domestic and wild ruminants. The objective of this study was to design a simple molecular test that could detect of lungworm DNA from both adult and larval lungworms and could distinguish between the most common Dictyocaulus species found in cattle and in some species of wild ruminants. A multiplex PCR test with four novel primers targeting species-specific regions of the second internal transcribed spacer (ITS2) was designed based on our own sequence data as well as on available sequence information in GenBank. After PCR amplification of lungworms from European bison (Bison bonasus), cattle (Bos taurus), moose (Alces alces), red deer (Cervus elaphus) and roe deer (Capreolus Capreolus), products were analysed with gel electrophoresis. This resulted in three specific bands of different size depending on the species analysed. Dictyocaulus viviparus collected from cattle or European bison resulted in a ca. 560 bp band, D. Capreolus collected from roe deer produced a band ca. 400 bp and the longest DNA band (ca. 660 bp) was obtained with DNA from Dictyocaulus sp. collected from red deer and moose. Dictyocaulus eckerti bands with expected size of 714 bp were not observed in our study. The multiplex method produced consistent results with samples from both Sweden and Poland and overcame the limitations of traditional techniques based on differences in morphological features of parasites at different life stages.
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Phylogeny of Dictyocaulus (lungworms) from eight species of ruminants based on analyses of ribosomal RNA data.
Parasitology, 2003Co-Authors: Johan Höglund, Elisabeth Wilhelmsson, D. A. Morrison, Billy P. Divina, Jens G. MattssonAbstract:SUMMARY In this study, we conducted phylogenetic analyses of nematode parasites within the genus Dictyocaulus (superfamily Trichostrongyloidea). Lungworms from cattle (Bos taurus), domestic sheep (Ovis aries), European fallow deer (Dama dama), moose (Alces alces), musk ox (Ovibos moschatus), red deer (Cervus elaphus), reindeer (Rangifer tarandus) and roe deer (Capreolus Capreolus) were obtained and their small subunit ribosomal RNA (SSU) and internal transcribed spacer 2 (ITS2) sequences analysed. In the hosts examined we identified D. Capreolus, D. eckerti, D. filaria and D. viviparus. However, in fallow deer we detected a taxon with unique SSU and ITS2 sequences. The phylogenetic position of this taxon based on the SSU sequences shows that it is a separate evolutionary lineage from the other recognized species of Dictyocaulus. Furthermore, the analysis of the ITS2 sequence data indicates that it is as genetically distinct as are the named species of Dictyocaulus. Therefore, either this taxon needs to be recognized as a new species, or D. Capreolus, D. eckerti and D. viviparus need to be combined into a single species. Traditionally, the genus Dictyocaulus has been placed as a separate family within the superfamily Trichostrongyloidea. The present molecular phylogenetic analyses support the placement as a separate family, but the current data do not support the placement of the Dictyocaulidae within the Trichostrongyloidea without a reassessment of the placement of the superfamily Strongyloidea. While D. eckerti has been regarded as the one and only lungworm species of cervids, this study showed that 4 host species including 3 members of Cervidae (moose, reindeer, red deer) and 1 Bovidae (musk ox) were infected with this parasite. Host ranges of D. viviparus (cattle), D. filaria (sheep) and D. Capreolus (moose and roe deer) were more restricted. No clear pattern of co-evolution between the dictyocaulid taxa and their bovid and cervid hosts could be determined.
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molecular identification and prevalence of dictyocaulus spp trichostrongyloidea dictyocaulidae in swedish semi domestic and free living cervids
Journal of Wildlife Diseases, 2002Co-Authors: Torsten Mörner, Elisabeth Wilhelmsson, Jens G. Mattsson, Billy P. Divina, Johan HöglundAbstract:Lungs of 102 roe deer (Capreolus Capreolus), 136 moose (Alces alces), 68 fallow deer (Dama dama), and six red deer (Cervus elaphus) were examined during hunting seasons from 16 September 1997 to 1 March 2000. The aim was to determine the species composition and prevalence of Dictyocaulus lungworms in these hosts in Sweden. Worms were identified following polymerase chain reaction (PCR) amplification of the internal transcribed spacer of ribosomal DNA (ITS2), followed by hybridization with four species-specific oligonucleotides. In addition, 50 lungworms from five reindeer (Rangifer tarandus) from Norway were similarly analyzed. A total of 399 worms were recovered and analyzed representing a range of 29–128 worms per host species. All specimens from roe deer were identified as Dictyocaulus Capreolus, whereas those from red deer and reindeer were identical with D. eckerti. From moose, 73 (81.1%) of the worms were identified as D. Capreolus whereas 17 (18.9%) were D. eckerti. The ITS2 sequence of fallow deer...
Josem Nieto - One of the best experts on this subject based on the ideXlab platform.
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epizootiology of sarcoptic mange in a population of cantabrian chamois rupicapra pyrenaica parava in northwestern spain
Veterinary Parasitology, 1997Co-Authors: J Fernandezmoran, Soledad Gomez, Fernando Ballesteros, Pablo Quiros, Josel Benito, Carlos Feliu, Josem NietoAbstract:Abstract In May of 1993, an epizootic of sarcoptic mange (Sarcoptes scabiei) was detected in the chamois (Rupicapra pyrenaica parva) population of the Cantabrian Mountains in northwestern Spain. The epizootic initially spread across an area inhabited by some 1600 chamois. Mortality was lower than reported for other populations of ungulates. The maximum number of animals were affected from February to May. Four red deer (Cervus elaphus) and a roe deer (Capreolus Capreolus), were diagnosed with sarcoptic mange from the same area in 1995. In these chamois mange was not correlated with host age or sex. The health and physiological status of this chamois population were not predisposing factors in the appearance of the mange epizootic. The clinical, epidemiological, serological, pathological and parasitological findings of this epizootic from May 1993 to June 1995 are described in this report.
