Prevalence and genetic diversity of avian haemosporidian parasites in islands within a mega hydroelectric dam in the Brazilian Amazon

Anjos, Carolina Clares dos; Bicudo, Thiago; Fecchio, Alan; Anciães, Marina; Mathias, Bruno da Silva; Chagas, Carolina Romeiro Fernandes; Bell, Jeffrey A.; Guimarães, Lilian de Oliveira; Monteiro, Eliana Ferreira; Kirchgatter, Karin

doi:10.1007/s00436-023-07906-3

Cited by 1 publication

(1 citation statement)

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“…The literature reports that both genera present a heterogeneous distribution, a highly variable prevalence (0–100%), and a great diversity of lineages 35 , 36 , a pattern also found here. In an ecologically similar area, Anjos et al 37 reported a comparable prevalence of Plasmodium (2.9%, 13 positive samples out of 445 birds) to the findings of our study, which supports of a low prevalence of this genus in ecosystems surrounding dams.…”

Section: Discussionsupporting

confidence: 90%

Bird community effects on avian malaria infections

Tamayo-Quintero

Puente

San‐José

et al. 2023

Sci Rep

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In community assembly processes, interspecific interactions play an important role in shaping community diversity, especially at the local scale. Changes in species richness or abundance can modify local infectious disease dynamics, either reducing or increasing the risk of transmission within the community. This study evaluates the effects of bird community on avian haemosporidians infections in a Neotropical region. Bird samples were collected from areas surrounding three dams, and molecular analysis were performed to identify blood-parasitic haemosporidia infecting the birds. Generalized linear models were used to analyze the relationships between the bird community and the prevalence, number of infections, and richness of avian haemosporidian lineages. Non-significant effects of bird community dominance and richness on the prevalence of avian parasites and the number of infections of Haemoproteus were found. However, there was evidence of an amplification effect. Host dominance was associated with the total number of infections, the number Plasmodium infections and the expected richness of Plasmodium lineages, while the expected richness of Haemoproteus lineages was associated with the richness of bird species. These findings highlight the role of host community dominance and richness in the dynamics of parasite infections, potentially influenced by the availability of competent hosts. This study contributes significantly to our understanding of blood parasite diversity in tropical birds within a relatively understudied region of South America.

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Section: Discussionsupporting

confidence: 90%