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The flying activity of biting midges (Ceratopogonidae: Culicoides) in Verkiai Regional Park, southeastern Lithuania

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Abstract

Culicoides biting midges are small dipterous insects (Diptera: Ceratopogonidae) which are known to be vectors of arboviruses, bacteria, protozoan and helminth parasites that can cause disease and mortality in livestock and poultry globally. Detailed knowledge of the Culicoides species composition and biology is essential to assess the risk of the introduction and transmission of pathogens. The aim of this study was to obtain data on Culicoides species composition and flying activity in southeastern Lithuania and to determine the meteorological variables related to the abundance of Culicoides biting midges. Biting midges were collected in Verkiai Regional Park, southeastern Lithuania, using an Onderstepoort trap once a week from April to October 2016 and 2018, and from April to July 2019; 7332 Culicoides females belonging to 22 species were identified. Both morphology and DNA barcoding were used for identification. The number of specimens trapped was highest for the Obsoletus Group, followed by Culicoides kibunensis and Culicoides impunctatus. The highest relative abundance and diversity of biting midges were found in May and June. The number of trapped biting midges correlated positively with the mean air temperature. The first biting midges in spring were caught when the mean daily temperature rose higher than 10 °C. No Culicoides were detected when the air temperature dropped below 5 °C in autumn. Wind speed and air humidity had no statistically significant effect on Culicoides abundance.

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Acknowledgements

The authors thank the staff of the laboratory of Ecology and Physiology of Hydrobionts, Nature Research Centre, Vilnius, Lithuania, for assistance in Culicoides trapping. We are grateful to Dr. Adrian Pont, Dr. Ravinder Sehgal and Dr. Carolina Romeiro Fernandes Chagas for language editing.

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The collection material is available at Nature Research Centre (Vilnius).

Funding

The study was supported by the open access to research infrastructure of the Nature Research Centre under the Lithuanian open access network initiative and the Research Council of Lithuania (S-MIP-17-27).

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Correspondence to Rasa Bernotienė.

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The authors declare no competing interests.

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Section Editor: Helge Kampen

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Supplementary information

Supplementary information 1

Numbers of Culicoides females of different species collected per night each week (DOCX 39 kb)

Supplementary information 2

Maximum likelihood phylogenetic tree (Kimura 2-Parameter model) based on Culicoides obsoletus (MW205939–MW205945) and Culicoides scoticus (MW205919–MW205921) COI sequences obtained during this study and representative sequences from GenBank deposited and discussed by Mignotte et al. (2020). Culicoides festivipennnis (MW205910) was used as an outgroup (PDF 45 kb)

Supplementary information 3

Relation (single dots) between mean air temperature (°C) and number of collected Culicoides (log10 scale) as determined from May to October (2016, 2018, 2019), and its linear trend (line) (PNG 163 kb)

High resolution image (TIF 399 kb)

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Bernotienė, R., Bartkevičienė, G. & Bukauskaitė, D. The flying activity of biting midges (Ceratopogonidae: Culicoides) in Verkiai Regional Park, southeastern Lithuania. Parasitol Res 120, 2323–2332 (2021). https://doi.org/10.1007/s00436-021-07147-2

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  • DOI: https://doi.org/10.1007/s00436-021-07147-2

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