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Contribution of tick-borne diseases to mortality in juvenile free-living cervids

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dc.abstract.enIntroduction and objective: Reports on tick-borne infections in free-living juvenile animals and their impact on survival of cervids in nature are lacking. The aim of the study was to detect and identify the Babesia and Anaplasma phagocytophilum species/ecotypes that may have contributed to the death of juvenile animals from a wildlife rescue centre in spring 2020. Material and methods: PCR amplification and sequencing of two genetic markers (18S rDNA and cox1 for Babesia, 16S rDNA and groEL for A. phagocytophilum) were used for screening eleven samples derived from juvenile animals which died in a rescue centre (seven roe deer Capreolus capreolus, one elk Alces alces, one red squirrel Sciurus vulgaris, one European beaver Castor fiber, one red fox Vulpes vulpes). Phylogenetic analysis of full-length 18S rDNA sequence was performed to enable differentiation between two closely-related species infecting wild ungulates, Babesia capreoli and Babesia divergens (zoonotic). Results: The occurrence of the typical SNPs of B. capreoli at two discriminating positions in the 18S rRNA gene allowed identification of B. capreoli infection in a roe deer calf. In two calves, Anaplasma phagocytophilum ecotype 2 was identified, including the same calf co-infection. No Babesia DNA was amplified in an elk calf treated for babesiosis. Splenomegaly was recorded in roe deer calves with A. phagocytophilum and A. phagocytophilum + B. capreoli infection. Conclusions: The study revealed that tick-borne infections are common among juvenile, free-living cervids and may contribute to their mortality.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorKowalec, Maciej
dc.contributor.authorDwużnik-Szarek, Dorota
dc.contributor.authorBajer, Anna
dc.contributor.authorAl-sarraf, Mustafa
dc.date.accessioned2024-01-24T20:47:34Z
dc.date.available2024-01-24T20:47:34Z
dc.date.copyright2021-10-21
dc.date.issued2022
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financeŚrodki finansowe przyznane na realizację projektu w zakresie badań naukowych lub prac rozwojowych
dc.description.versionFINAL_AUTHOR
dc.identifier.doi10.26444/AAEM/142513
dc.identifier.issn1232-1966
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/103701
dc.identifier.weblinkhttps://doi.org/10.26444/aaem/142513
dc.languageeng
dc.pbn.affiliationbiological sciences
dc.relation.ispartofAnnals of Agricultural and Environmental Medicine
dc.rightsCC-BY-NC
dc.sciencecloudnosend
dc.titleContribution of tick-borne diseases to mortality in juvenile free-living cervids
dc.typeJournalArticle
dspace.entity.typePublication