Behaviour 2019
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Plumage of Blue-crowned Manakin males predicts female visitation but does not signal avian malaria infection
FERNANDO TEÓFILO1, MARIANE MARIANE BOSHOLN1, ALAN FECCHIO3,5, JASON WECKSTEIN3,4, MARINA ANCIÃES1,2. 1Laboratório de Evolução e Comportamento Animal (LABECA), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM 69067-970, Brazil, Manaus, Outside US/Canada, Brazil; 2Coordenação de Biodiversidade (COBIO), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM 69067-970, Brazil, Manaus, Outside US/Canada, Brazil; 3Ornithology Department, Academy of Natural Sciences of Drexel University, Philadelphia, USA., Phyladelphia, , United States; 4Biodiversity, Earth, and Environmental Science Department, Drexel University, Philadelphia, USA., Phyladelphia, , United States; 5Programa de Pós Graduação em Ecologia e Conservação da Biodiversidade, Universidade Federal do Mato Grosso, Cuiabá, Mato Grosso, 78060-900, Brazil., Cuiabá, Outside US/Canada, Brazil

The parasite hypothesis posits that visual signals work as honest indicators of heritable resistance to parasites. In this context, we sampled 24 adult male and 26 adult female of Blue-crowned Manakin Lepidothrix coronata from a population in central Amazonia to test the hypothesis that (i) plumage colour of male Blue-crowned Manakin influences the attraction of female individuals; and (ii) the occurrence of haemosporidian parasites is associated with the plumage colouration patterns of male Blue-crowned Manakin. Through behavioural observations, we estimated the frequency of female visits at individual perches of Blue-crowned Manakin males. We measured colour spectra from eight plumage patches of male individuals and examined whether these individuals were infected with haemosporidian parasites using molecular screening techniques. We found that variation in melanin-based pigment and structural colours among male Blue-crowned Manakin predicts female visits. However, variation in these colours did not correspond to occurrence of haemosporidian parasites.