Seleção sexual em multi-escalas: efeitos da malária aviária sobre o comportamento de leque e preferência da fêmea do uirapuru-de-coroa-azul (Lepidothrix coronata, Aves: Pipridae)
Infection by blood parasites of the genus Plasmodium can affect survival and reproduction in the host, and may affect the expression of sexual selection traits. Although different studies highlight the association of parasitism with a decrease in reproductive success of hosts, it is still uncertain...
| Autor principal: | Bosholn, Mariane |
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| Grau: | Dissertação |
| Idioma: | por |
| Publicado em: |
Instituto Nacional de Pesquisas da Amazônia - INPA
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/11931 http://lattes.cnpq.br/8102271563187887 |
| Resumo: |
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Infection by blood parasites of the genus Plasmodium can affect survival and reproduction in the host, and may affect the expression of sexual selection traits. Although different studies highlight the association of parasitism with a decrease in reproductive success of hosts, it is still uncertain which fitness components are affected by the parasites. Hence, few studies have addressed the role of parasites in honest signalling among lekking species. Here, we investigated if infection by Plasmodium spp. compromises rates of vocalization, dance and social interaction of male Blue-crowned Manakins (Lepidothrix coronata), and if it affects female preferences in a Central Amazon population. Behavioral observations coupled with molecular diagnosis to detect haemosporidian parasites revealed that infection by Plasmodium affected male activities, as well as female choice. Furthemore, despite similar visiting frequencies to both infected and uninfected males, they were more frequent to males that vocalized and danced more, which were more frequently not infected. Therefore, we suggest a role of male vocalization and dance rates as honest signals for females, indicating male immunity in the studied population. Thus, male exhibitions would function as an important signal for sexual selection, used by females as cues about the probability of a male being infected. Future studies testing the inheritance of female preferences and male behaviour rates will add to the understanding of the role of such behaviors in the evolution of mechanisms of female preferences with honest signals. |