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Molecular screening of avian viruses and parasites in Wedge-tailed Shearwaters Ardenna pacifica and Barau’s Petrels Pterodroma baraui on Réunion Island.
Citation
Lebarbenchon, C., Toty, C., Boucher, S., Jaeger, A., & Le Corre, M. 2025. Molecular screening of avian viruses and parasites in Wedge-tailed Shearwaters Ardenna pacifica and Barau’s Petrels Pterodroma baraui on Réunion Island..
Marine Ornithology 53: 261
- 264
http://doi.org/10.5038/2074-1235.53.2.1645
Received 24 April 2025, accepted 22 May 2025
Date Published: 2025/10/15
Date Online: 2025/08/26
Key words: blood parasites, coronavirus, flavivirus, influenza viruses, Procellariiformes, Indian Ocean
Abstract
We investigated Wedge-tailed Shearwater Ardenna pacifica and Barau's Petrel Pterodroma baraui exposure to infectious agents circulating in the western Indian Ocean. Using polymerase chain reaction and serological analyses, we screened for influenza viruses, flaviviruses, coronaviruses, and blood parasites (Haemoproteus, Leucocytozoon, and Plasmodium). No active infections were detected and serological results suggested limited past exposure, with only two Wedge-tailed Shearwaters testing positive for antibodies to the influenza A virus. These findings indicate the limited role of these species as epidemiological reservoirs. However, environmental factors such as tick infestations and isolated breeding habitats highlight the need for continued epidemiological monitoring to support effective conservation strategies.
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