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Ticking off the ungulate box : the role of different ungulate species in the transmission of tick-borne pathogens

Fabri, Nannet (2022). Ticking off the ungulate box : the role of different ungulate species in the transmission of tick-borne pathogens. Diss. (sammanfattning/summary) Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880
ISBN 978-91-7760-909-4
eISBN 978-91-7760-910-0
[Doctoral thesis]

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Abstract

Ungulates play a central role in the life cycle of Ixodes ricinus, an important vector of tick-borne pathogens, and several ungulate species are increasingly common across Europe. I investigated the role of these different species in the spread of I. ricinus-borne pathogens. Through a meta-analysis, I quantified the relative importance of ungulate species in the transmission of Anaplasma phagocytophilum. Furthermore, through field studies, I compared the contribution of each species to the number of ticks and the transmission of A. phagocytophilum and Borrelia burgdorferi sensu lato (s.l.) by quantifying tick burdens, relative ungulate densities, vegetation structure and (infected) questing tick density. My studies indicated that Ticking off the ungulate box – the role of different ungulate species in the transmission of tick-borne pathogens deer contributed more to the spread of tick-borne pathogens than wild boar (Sus scrofa), and fallow deer (Dama dama) more than the other deer species. I then modelled how changing an ungulate community composition affects the establishment of pathogens, expressed by the reproduction number R0. High density of fallow deer along with low density of roe deer (Capreolus capreolus) resulted in a higher R0 of the zoonotic A. phagocytophilum ecotype 1, and a lower R0 of the nonzoonotic ecotype 2. The effects of ungulates on the R0 of B. afzelii and B. garinii were negligible. My thesis thus suggests that different deer species likely vary in their effect on the circulation of various tick-borne pathogens. Ungulate management, as a tool to mitigate public and veterinary health risk, should therefore not approach ungulates as one homogenous group, but depending on the pathogen, take note of potentially different roles that ungulate species may play.

Authors/Creators:Fabri, Nannet
Title:Ticking off the ungulate box : the role of different ungulate species in the transmission of tick-borne pathogens
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :2022
Number:2022:17
Number of Pages:95
Publisher:Swedish University of Agricultural Sciences
ISBN for printed version:978-91-7760-909-4
ISBN for electronic version:978-91-7760-910-0
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Article category:Other scientific
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:Anaplasma phagocytophilum, Borrelia burgdorferi, emerging infectious disease, Ixodes ricinus, One Health, tick-borne pathogen, transmission, ungulate management, zoonosis
URN:NBN:urn:nbn:se:slu:epsilon-p-116301
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-116301
ID Code:27291
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Wildlife, Fish and Environmental Studies
Deposited By: SLUpub Connector
Deposited On:10 Mar 2022 15:25
Metadata Last Modified:10 Mar 2022 15:31

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