PCI Infections

194

Title

Spring reproductive success influences autumnal malarial load in a passerine birduse asterix (*) to get italics

Authors

Romain Pigeault, Camille-Sophie Cozzarolo, Jérôme Wassef, Jérémy Gremion, Marc Bastardot, Olivier Glaizot, Philippe ChristePlease use the format "First name initials family name" as in "Marie S. Curie, Niels H. D. Bohr, Albert Einstein, John R. R. Tolkien, Donna T. Strickland"

Year

2024

Picture

Abstract

Although avian haemosporidian parasites are widely used as model organisms to study fundamental questions in evolutionary and behavorial ecology of host-parasite interactions, some of their basic characteristics, such as seasonal variations in within-host density, are still mostly unknown. In addition, their interplay with host reproductive success in the wild seems to depend on the interaction of many factors, starting with host and parasite species and the temporal scale under study. Here, we monitored the parasitemia of two haemosporidian parasites - Plasmodium relictum (lineage SGS1) and P. homonucleophilum (lineage SW2) - in two wild populations of great tits (Parus major) in Switzerland over three years, to characterize their dynamics. We also collected data on birds' reproductive output - laying date, clutch size, fledging success - to determine whether they were associated with parasitemia before (winter), during (spring) and after (autumn) breeding season. Parasitemia of both species dramatically increased in spring, in a way that was correlated to parasitemia in winter. Parasitemia before and during breeding season did not explain reproductive success. However, the birds which fledged the more chicks had higher parasitemia in autumn, which was not associated with their parasitemia in previous spring. Our results tend to indicate that high haemosporidian parasite loads do not impair reproduction in great tits, but high resource allocation into reproduction can leave birds less able to maintain low parasitemia over the following months.

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Keywords

avian malaria, annual variations, relapses, recrudescence, recurrences, parasitemia, life, history traits, bird

Methods that require specific expertise (optional)

NonePlease indicate the methods that may require specialised expertise during the peer review process (use a comma to separate various required expertises).

Thematic fields

Interactions between hosts and infectious agents/vectors, Parasites

Suggested reviewers - Suggest up to 10 reviewers (provide names and Email addresses). (Optional)

Luz García-Longoria suggested: adiezfer@gmail.com , Ravinder Sehgal [sehgal@sfsu.edu] suggested: Hi Claire, I am so sorry but I am reviewing several other papers right now plus I am the opponent of a thesis candidate in Lund. I would recommend Alfonso Marzal or Diego Santiago Alarcon or Jenny Dunn for this manuscript. , Ravinder Sehgal [sehgal@sfsu.edu] suggested: Thanks, , Ravinder Sehgal [sehgal@sfsu.edu] suggested: Ravinder, Santiago Merino suggested: Alfonso Marzal amarzal@unex.es, Santiago Merino suggested: Josue Martinez de la Puente jmp@ugr.es, Jenny Dunn [jdunn@lincoln.ac.uk] suggested: Tamara Emmenegger, tamara.emmenegger@vogelwarte.ch, Carolina Chagas suggested: Dear Claire,, Carolina Chagas suggested: From my previous reading, there were just some minor review in this manuscript. According to the answers provided by the authors, I do not have any more comments on this., Carolina Chagas suggested: The manuscript is very interesting and I congratulate the authors for that. Thank you for the opportunity to review it., Carolina Chagas suggested: Best regards No need for them to be recommenders of PCIInfections. Please do not suggest reviewers for whom there might be a conflict of interest. Reviewers are not allowed to review preprints written by close colleagues (with whom they have published in the last four years, with whom they have received joint funding in the last four years, or with whom they are currently writing a manuscript, or submitting a grant proposal), or by family members, friends, or anyone for whom bias might affect the nature of the review - see the code of conduct

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Submission date

2023-08-11 14:14:56

Recommender

Claire Loiseau

Reviewers

Carolina Chagas, Anonymous, Luz García-Longoria

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