Potential mosquito vector attraction to- and feeding preferences for pigs in Romanian backyard farms

IntroductionMosquitoes either biologically or mechanically transmit various vector-borne pathogens affecting pigs. Mosquito species display a wide variety of host preference, as well as host attraction and behaviours. Mosquito species attraction rates to- and feeding rates on pigs or other potential...

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Main Authors: Jonno Jorn Stelder, Andrei Daniel Mihalca, Ann Sofie Olesen, Lene Jung Kjær, Anette Ella Boklund, Thomas Bruun Rasmussen, Mihai Marinov, Vasile Alexe, Oana Maria Balmoş, René Bødker
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-01-01
Series:Frontiers in Veterinary Science
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Online Access:https://www.frontiersin.org/articles/10.3389/fvets.2022.1046263/full
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author Jonno Jorn Stelder
Andrei Daniel Mihalca
Ann Sofie Olesen
Lene Jung Kjær
Anette Ella Boklund
Thomas Bruun Rasmussen
Mihai Marinov
Vasile Alexe
Oana Maria Balmoş
René Bødker
author_facet Jonno Jorn Stelder
Andrei Daniel Mihalca
Ann Sofie Olesen
Lene Jung Kjær
Anette Ella Boklund
Thomas Bruun Rasmussen
Mihai Marinov
Vasile Alexe
Oana Maria Balmoş
René Bødker
author_sort Jonno Jorn Stelder
collection DOAJ
description IntroductionMosquitoes either biologically or mechanically transmit various vector-borne pathogens affecting pigs. Mosquito species display a wide variety of host preference, as well as host attraction and behaviours. Mosquito species attraction rates to- and feeding rates on pigs or other potential hosts, as well as the seasonal abundance of the mosquito species affects their pathogen transmission potential.MethodsWe caught mosquitoes in experimental cages containing pigs situated in Romanian backyard farms. The host species of blood meals were identified with PCR and sequencing.ResultsHigh feeding preferences for pigs were observed in Aedes vexans (90%), Anopheles maculipennis (80%) and Culiseta annulata (72.7%). However, due to a high abundance in the traps, Culex pipiens/torrentium were responsible for 37.9% of all mosquito bites on pigs in the Romanian backyards, despite low feeding rates on pigs in the cages (18.6%). We also found that other predominantly ornithophilic mosquito species, as well as mosquitoes that are already carrying a blood meal from a different (mammalian) host, were attracted to backyard pigs or their enclosure.DiscussionThese results indicate that viraemic blood carrying, for instance, African swine fever virus, West-Nile virus or Japanese encephalitis virus could be introduced to these backyard pig farms and therefore cause an infection, either through subsequent feeding, via ingestion by the pig or by environmental contamination.
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spelling doaj.art-01e341f1228d45beb1f3c9e7d11ce4f92023-01-04T14:48:31ZengFrontiers Media S.A.Frontiers in Veterinary Science2297-17692023-01-01910.3389/fvets.2022.10462631046263Potential mosquito vector attraction to- and feeding preferences for pigs in Romanian backyard farmsJonno Jorn Stelder0Andrei Daniel Mihalca1Ann Sofie Olesen2Lene Jung Kjær3Anette Ella Boklund4Thomas Bruun Rasmussen5Mihai Marinov6Vasile Alexe7Oana Maria Balmoş8René Bødker9Section for Animal Welfare and Disease Control, Department of Veterinary and Animal Sciences, Copenhagen University, Copenhagen, DenmarkDepartment of Parasitology and Parasitic Diseases, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Cluj-Napoca, RomaniaDepartment of Virus and Microbiological Special Diagnostics, Statens Serum Institut, Copenhagen, DenmarkSection for Animal Welfare and Disease Control, Department of Veterinary and Animal Sciences, Copenhagen University, Copenhagen, DenmarkSection for Animal Welfare and Disease Control, Department of Veterinary and Animal Sciences, Copenhagen University, Copenhagen, DenmarkDepartment of Virus and Microbiological Special Diagnostics, Statens Serum Institut, Copenhagen, DenmarkDepartment of Biodiversity Conservation and Sustainable Use of Natural Resources, Danube Delta National Institute for Research and Development, Tulcea, RomaniaDepartment of Biodiversity Conservation and Sustainable Use of Natural Resources, Danube Delta National Institute for Research and Development, Tulcea, RomaniaDepartment of Parasitology and Parasitic Diseases, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Cluj-Napoca, RomaniaSection for Animal Welfare and Disease Control, Department of Veterinary and Animal Sciences, Copenhagen University, Copenhagen, DenmarkIntroductionMosquitoes either biologically or mechanically transmit various vector-borne pathogens affecting pigs. Mosquito species display a wide variety of host preference, as well as host attraction and behaviours. Mosquito species attraction rates to- and feeding rates on pigs or other potential hosts, as well as the seasonal abundance of the mosquito species affects their pathogen transmission potential.MethodsWe caught mosquitoes in experimental cages containing pigs situated in Romanian backyard farms. The host species of blood meals were identified with PCR and sequencing.ResultsHigh feeding preferences for pigs were observed in Aedes vexans (90%), Anopheles maculipennis (80%) and Culiseta annulata (72.7%). However, due to a high abundance in the traps, Culex pipiens/torrentium were responsible for 37.9% of all mosquito bites on pigs in the Romanian backyards, despite low feeding rates on pigs in the cages (18.6%). We also found that other predominantly ornithophilic mosquito species, as well as mosquitoes that are already carrying a blood meal from a different (mammalian) host, were attracted to backyard pigs or their enclosure.DiscussionThese results indicate that viraemic blood carrying, for instance, African swine fever virus, West-Nile virus or Japanese encephalitis virus could be introduced to these backyard pig farms and therefore cause an infection, either through subsequent feeding, via ingestion by the pig or by environmental contamination.https://www.frontiersin.org/articles/10.3389/fvets.2022.1046263/fullblood mealafrican swine fever virusmechanical transmissionwest-nile virusjapanese encephalitis virusinsect vectors
spellingShingle Jonno Jorn Stelder
Andrei Daniel Mihalca
Ann Sofie Olesen
Lene Jung Kjær
Anette Ella Boklund
Thomas Bruun Rasmussen
Mihai Marinov
Vasile Alexe
Oana Maria Balmoş
René Bødker
Potential mosquito vector attraction to- and feeding preferences for pigs in Romanian backyard farms
Frontiers in Veterinary Science
blood meal
african swine fever virus
mechanical transmission
west-nile virus
japanese encephalitis virus
insect vectors
title Potential mosquito vector attraction to- and feeding preferences for pigs in Romanian backyard farms
title_full Potential mosquito vector attraction to- and feeding preferences for pigs in Romanian backyard farms
title_fullStr Potential mosquito vector attraction to- and feeding preferences for pigs in Romanian backyard farms
title_full_unstemmed Potential mosquito vector attraction to- and feeding preferences for pigs in Romanian backyard farms
title_short Potential mosquito vector attraction to- and feeding preferences for pigs in Romanian backyard farms
title_sort potential mosquito vector attraction to and feeding preferences for pigs in romanian backyard farms
topic blood meal
african swine fever virus
mechanical transmission
west-nile virus
japanese encephalitis virus
insect vectors
url https://www.frontiersin.org/articles/10.3389/fvets.2022.1046263/full
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