Extra-pair paternity in the Saffron Finch is related to song peak frequency and body condition

MARIA JULIANA BENÍTEZ-SALDÍVAR; CAROLINA ISABEL MIÑO; VIVIANA MASSONI

EMU

CSIRO PUBLISHING

Lugar: Collingwood; Año: 2022 vol. 122 p. 226 - 237

0158-4197

In many avian species, age, body size, and song could signal quality or individual breedingexperience and these traits are often correlated with reproductive success. The relationshipbetween sexually selected signals and avian mating systems is a topic of active research, but stillremains poorly investigated in species from southern latitudes. Here, we explored the relationshipsbetween body size, condition, age, song and social and genetic reproductive success in Sicalis flaveola pelzelni, a Neotropical thraupid. This socially monogamous species has both age-related changes in song and plumage colouration and extra-pair paternity. When measuring male song wefound that a lower peak frequency may be associated with patterns of extra-pair paternity gain bymales. We also found that male age may not have a marked effect on paternity assurance. Inaddition, we found that female body condition appears to influence on the proportion of extra-pairnestlings in females’ nests. We contribute novel data to help bridge the geographic and taxonomicgap in this research field.