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Host taxon-derived Sarcoptes mite in European wild animals revealed by microsatellite markers

AuthorsRasero, Mario; Rossi, Luca; Soglia, D.; Maione, Sandra; Sacchi, Paola; Rambozzi, Luisa; Sartore, S.; Soriguer, Ramón C. ; Spalenza, Veronica; Alasaad, Samer
Issue Date2010
CitationBiological Conservation 143: 1269- 1277 (2010)
AbstractTen markers specific to Sarcoptes mites were used in applying microsatellite genotyping to individual Sarcoptes mites collected in three European countries from 15 wild mammal populations belonging to 10 host species. The results showed that geographical separation had real biological significance for the definition of mite sub-populations, and that the degree of genetic exchange occurring between mites from different localities was apparently related to the geographical distance between locations. Wild host-derived mite populations were found to be clustered into three main groups: herbivore-, carnivore- and omnivore-derived Sarcoptes populations, with the omnivore-derived group located halfway between the herbivore- and carnivore-derived Sarcoptes populations. The separation between these three mite groups was better supported than the geographical separations; nevertheless, a kind of sub-clustering was detected within each of these three groups that separates mite populations into their geographical localities (countries). The lack of gene flow between Sarcoptes populations may have improved parasitic adaptations and led to what we refer to as a host-taxon-derived (carnivore host-, herbivore host- and omnivore host-derived) Sarcoptes mite found on European wild animals. Our results demonstrate that Sarcoptes is not a single panmictic population, even within each geographical location. This finding will have important ramifications for the study of the genetic structure of populations, life cycles, diagnosis and the monitoring protocols of the ubiquitous Sarcoptes mite, and could thus contribute to a better understanding of its associated epidemiology, which is of pivotal interest for wildlife biological conservation. © 2010 Elsevier Ltd. All rights reserved.
Identifiersdoi: 10.1016/j.biocon.2010.03.001
issn: 0006-3207
Appears in Collections:(EBD) Artículos
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