The association between haemosporidian infection and non-breeding moult location in great reed warblers revisited by combining feather stable isotope profiles and geolocator data

0580555 - ÚBO 2025 RIV DE eng J - Článek v odborném periodiku
Procházka, Petr - Emmenegger, T. - Bauer, S. - Ciloglu, A. - Dimitrov, D. - Hansson, B. - Hasselquist, D. - Yohannes, E. - Zehtindjiev, P. - Bensch, S.
The association between haemosporidian infection and non-breeding moult location in great reed warblers revisited by combining feather stable isotope profiles and geolocator data.
Oecologia. Roč. 204, č. 1 (2024), s. 107-118. ISSN 0029-8549. E-ISSN 1432-1939
Grant CEP: GA ČR(CZ) GA20-00648S
Institucionální podpora: RVO:68081766
Klíčová slova: Avian malaria * Haemoproteus * Leucocytozoon * Plasmodium * Transmission areas
Obor OECD: Ornithology
Impakt faktor: 2.7, rok: 2022
Způsob publikování: Open access
https://link.springer.com/article/10.1007/s00442-023-05491-x

Stable isotope analysis provides valuable insights into the ecology of long-distance migratory birds during periods spent away from a specific study site. In a previous study, Swedish great reed warblers (Acrocephalus arundinaceus) infected with haemosporidian parasites differed in feather isotope ratios compared to non-infected birds, suggesting that infected and non-infected birds spent the non-breeding season in different locations or habitats. Here, we use a novel dataset comprising geolocator data, isotopes, and haemosporidian infection status of 92 individuals from four Eurasian populations to investigate whether parasite transmission varies with geography or habitats. We found that the probability of harbouring Plasmodium and Leucocytozoon parasites was higher in birds moulting in the eastern region of the non-breeding grounds. However, no geographic pattern occurred for Haemoproteus infections or overall infection status. In contrast to the previous study, we did not find any relationship between feather isotope ratios and overall haemosporidian infection for the entire current dataset. Plasmodium-infected birds had lower feather δ 15N values indicating that they occupied more mesic habitats. Leucocytozoon-infected birds had higher feather δ 34S values suggesting more coastal sites or wetlands with anoxic sulphate reduction. As the composition and prevalence of haemosporidian parasites differed between the old and the current dataset, we suggest that the differences might be a consequence of temporal dynamics of haemosporidian parasites. Our results emphasize the importance of replicating studies conducted on a single population over a restricted time period, as the patterns can become more complex for data from wider geographical areas and different time periods.
Trvalý link: https://hdl.handle.net/11104/0349317