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Título

The cheek plumage patch is an amplifier of dominance in great tits

Autor Galván, Ismael ; Sanz, Juan José
Palabras clave amplifiers
plumage colour
sexual selection
signals
Fecha de publicación 2008
EditorRoyal Society (Great Britain)
Citación Biology letters 4:12-15 (2008)
ResumenAmplifiers are signals that enhance the perception of other signals or cues, but no studies to date provide empirical evidence for the role of these signals in a reproductive context. Here we use the white cheek patch of great tits as a model for studying this issue. Aggressive interactions decrease patch immaculateness, so patch size may be an amplifier of dominance, that is, more clearly reveal status. If so, in high-quality individuals patch size should correlate positively with reproductive success (here estimated by laying date, assuming that the earlier the better), whereas low-quality individuals with a large patch should only more clearly reveal their low quality and thus suffer low reproductive success, which is exactly the pattern found in males. In contrast, the cheek patch does not seem to function as an amplifier in female great tits.
Versión del editorhttp://rsbl.royalsocietypublishing.org/content/4/1/12
URI http://hdl.handle.net/10261/110550
DOI10.1098/rsbl.2007.0504
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