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Haemosporidian taxonomic composition, network centrality and partner fidelity between resident and migratory avian hosts

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Abstract

Migration can modify interaction dynamics between parasites and their hosts with migrant hosts able to disperse parasites and impact local community transmission. Thus, studying the relationships among migratory hosts and their parasites is fundamental to elucidate how migration shapes host–parasite interactions. Avian haemosporidians are some of the most prevalent and diverse group of wildlife parasites and are also widely studied as models in ecological and evolutionary research. Here, we contrast partner fidelity, network centrality and parasite taxonomic composition among resident and non-resident avian hosts using presence/absence data on haemosporidians parasitic in South American birds as study model. We ran multilevel Bayesian models to assess the role of migration in determining partner fidelity (i.e., normalized degree) and centrality (i.e., weighted closeness) in host–parasite networks of avian hosts and their respective haemosporidian parasites. In addition, to evaluate parasite taxonomic composition, we performed permutational multivariate analyses of variance to quantify dissimilarity in haemosporidian lineages infecting different host migratory categories. We observed similar partner fidelity and parasite taxonomic composition among resident and migratory hosts. Conversely, we demonstrate that migratory hosts play a more central role in host–parasite networks than residents. However, when evaluating partially and fully migratory hosts separately, we observed that only partially migratory species presented higher network centrality when compared to resident birds. Therefore, migration does not lead to differences in both partner fidelity and parasite taxonomic composition. However, migratory behavior is positively associated with network centrality, indicating migratory hosts play more important roles in shaping host–parasite interactions and influence local transmission.

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Availability of data and materials

A part of the data that support the findings of this study is openly available at https://onlinelibrary.wiley.com/doi/10.1111/mec.15094 and http://130.235.244.92/Malavi/ (Bensch et al. 2009). The other portion of the data that support our findings can be shared by Prof. Érika Martins Braga under reasonable request.

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Acknowledgements

We thank Gabriel Moreira Félix for his fundamental advise on our analyses and the MalAvi curators for maintaining the database and for making all data available, as well as all researchers who deposited their data into this public repository. We are also grateful to Lucas Marques for graphical support.

Funding

Daniela Dutra was supported by a doctoral scholarship from the University of Otago. During the project, Alan Fecchio was supported by a postdoctoral fellowship (PNPD scholarship) from Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES). Érika Braga was supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq).

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Contributions

Daniela Dutra and Robert Poulin conceived the idea and designed the study. Daniela Dutra performed the data analyses. Daniela Dutra, Érika Braga and Alan Fecchio collected the data. Daniela Dutra wrote the manuscript with input from all other authors. All authors contributed critically to the drafts and gave final approval for publication.

Corresponding author

Correspondence to Daniela de Angeli Dutra.

Additional information

Communicated by Eva Kallio.

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de Angeli Dutra, D., Fecchio, A., Braga, É.M. et al. Haemosporidian taxonomic composition, network centrality and partner fidelity between resident and migratory avian hosts. Oecologia 197, 501–509 (2021). https://doi.org/10.1007/s00442-021-05031-5

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  • DOI: https://doi.org/10.1007/s00442-021-05031-5

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