The couple that sings together stays together: duetting, aggression and extra-pair paternity in a promiscuous bird species.
Biol Lett
; 12(2): 20151025, 2016 Feb.
Article
em En
| MEDLINE
| ID: mdl-26911342
ABSTRACT
When individuals mate outside the pair bond, males should employ behaviours such as aggression or vocal displays (e.g. duetting) that help assure paternity of the offspring they care for. We tested whether male paternity was associated with aggression or duetting in the red-backed fairy-wren, a species exhibiting high rates of extra-pair paternity. During simulated territorial intrusions, aggression and duetting were variable among and repeatable within males, suggesting behavioural consistency of individuals. Males with quicker and stronger duet responses were cuckolded less often than males with slower and weaker responses. In contrast, physical aggression was not correlated with male paternity. These results suggest that either acoustic mate guarding or male-female vocal negotiations via duetting lead to increased paternity assurance, whereas physical aggression does not.
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Base de dados:
MEDLINE
Assunto principal:
Vocalização Animal
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Aves Canoras
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Agressão
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Preferência de Acasalamento Animal
Idioma:
En
Ano de publicação:
2016
Tipo de documento:
Article