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Avian haemosporidia in native and invasive sparrows at an Afrotropical region

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Abstract

Bio-invasions are a major threat to biodiversity and ecosystems globally and may contribute to the proliferation of emerging infectious diseases. We examined the prevalence and phylogenetic diversity of avian haemosporidian parasites infecting the non-native house sparrows (Passer domesticus) and the native southern grey-headed sparrows (Passer diffusus). Blood samples from 104 sparrows (74 house sparrows and 30 southern grey-headed sparrows) mist-netted inside and around the Kruger National Park were used. Genomic DNA was extracted from each blood sample and subjected to nested PCR analyses, Sanger sequencing and phylogenetic analyses. Overall, 35.57% (37/104) of the birds sampled were infected with at least one haemosporidian parasites. Southern grey-headed sparrows had a higher parasite prevalence (60%) than house sparrows (24.3%). A total of 16 parasite lineages were identified, of which eight were novel lineages. Whereas Haemoproteus spp. showed the highest lineage diversity, Leucocytozoon spp. were the most prevalent parasites, albeit with significant differences between sparrow species. A single Plasmodium sp. infection was recorded in a southern grey-headed sparrow. In support of the enemy release hypothesis, we found that prevalence on non-native house sparrows was lower than prevalence recorded in their region of origin and also that they were infected only by indigenous parasites lineages.

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Data availability

Data for this study is freely available from the South African Foundational Biodiversity Information Programme (FBIP) repository.

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Acknowledgements

We are grateful to several students from the Organisation of Tropical Studies (OTS) who assisted in bird captures in the field.

Funding

Funding for this study came from the National Research Foundation (NRF), the Foundational Biodiversity Information Programme (FBIP) and the University of the Free State.

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Correspondence to Mduduzi Ndlovu.

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Ethics approval

The study was approved by the South African National Park (Research Permit No. NDLM1262) and the University of the Witwatersrand Animal Ethics Screening Committee (Clearance Certificate No. 2015/02/B). Other ethical clearances were delivered by the University of the Free State to M Ndlovu (UFS-AED2017/0004) and MB Wardjomto (UFS-AED2018/0012). Permission to conduct research in terms of Sect. 20 of the Animal Disease Act 1984 (Act No 35 Of 1984) was obtained from the Department of Agriculture, Forestry and Fisheries of South Africa (Ref number 12/11/1/4). The Bushbuckridge Municipality in Mpumalanga province granted access to sampling sites outside the Park.

Conflict of interest

The authors declare no competing interests.

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Section Editor: Berit Bangoura.

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Wardjomto, M.B., Ndlovu, M., Pérez-Rodríguez, A. et al. Avian haemosporidia in native and invasive sparrows at an Afrotropical region. Parasitol Res 120, 2631–2640 (2021). https://doi.org/10.1007/s00436-021-07214-8

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  • DOI: https://doi.org/10.1007/s00436-021-07214-8

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