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Latitudinal diversity of biting midge species within the Obsoletus group across three habitats in Europe
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Biology. Linköping University, Faculty of Science & Engineering. Wageningen Univ and Res, Netherlands.
Wageningen Univ and Res, Netherlands.
Wageningen Univ and Res, Netherlands.
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Biology. Linköping University, Faculty of Science & Engineering.
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2019 (English)In: Medical and Veterinary Entomology, ISSN 0269-283X, E-ISSN 1365-2915, Vol. 33, no 3, p. 420-426Article in journal (Refereed) Published
Abstract [en]

Culicoides species from the Obsoletus group are important vectors of bluetongue and Schmallenberg virus. This group consists of several species that cannot easily be identified using morphological characteristics. Therefore, limited information is available about their distribution and habitat preferences. In this study, we aimed to elucidate the species composition of the Obsoletus group in three habitat types at climatically different latitudes across Europe. Traps were placed in three habitat types in three countries at different latitudes. After DNA extraction, biting midges were identified using PCR and gel electrophoresis. Extraction of DNA using Chelex proved to be a cost and time efficient method for species identification. A latitudinal effect on the relative abundance of species from the Obsoletus group was found. Species composition was unique for most country-habitat combinations. The majority of biting midges were either C. obsoletus s.s. or C. scoticus, and both species were found at all latitudes and habitats. Their wide distribution and their high abundance at livestock farms make these species likely candidates for rapid farm-to-farm transmission of pathogens throughout Europe. Our results emphasize the need to differentiate Obsoletus group species to better understand their ecology and contribution to pathogen transmission.

Place, publisher, year, edition, pages
WILEY , 2019. Vol. 33, no 3, p. 420-426
Keywords [en]
Culicoides; bluetongue; Obsoletus complex; Onderstepoort light trap; livestock disease; Schmallenberg; species composition; vectors
National Category
Zoology
Identifiers
URN: urn:nbn:se:liu:diva-159707DOI: 10.1111/mve.12379ISI: 000478636800011PubMedID: 31033029OAI: oai:DiVA.org:liu-159707DiVA, id: diva2:1343903
Note

Funding Agencies|Italian Ministry of Education, University and Research (MIUR) [Prin 2012 protocol 2012T85B3R]; Svenska Forskningsradet Formas; Linkoping University; Ministerie van Economische Zaken [1300018161]

Available from: 2019-08-19 Created: 2019-08-19 Last updated: 2019-09-11

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