Bilateral Coordination and the Motor Basis of Female Preference for Sexual Signals in Canary Song

Abstract : The preference of female songbirds for particular traits in the songs of courting males has received considerable attention, but the relationship of preferred traits to male quality is poorly understood. Female domestic canaries (Serinus canaria, Linnaeus) preferentially solicit copulation with males that sing special high repetition rate, wide-band, multi-note syllables, called 'sexy' or A-syllables. Syllables are separated by minibreaths but each note is produced by pulsatile expiration, allowing high repetition rates and long duration phrases. The wide bandwidth is achieved by including two notes produced sequentially on opposite sides of the syrinx, in which the left and right sides are specialized for low or high frequencies, respectively. The emphasis of low frequencies is facilitated by a positive relationship between syllable repetition rate and the bandwidth of the fundamental frequency of notes sung by the left syrinx, such that bandwidth increases with increasing syllable repetition rate. The temporal offset between notes prevents cheating by unilaterally singing a note on the left side with a low fundamental frequency and prominent higher harmonics. The syringeal and respiratory motor patterns by which sexy syllables are produced support the hypothesis that these syllables provide a sensitive vocal-auditory indicator of a male's performance limit for the rapid, precisely coordinated interhemispheric switching, which is essential for many sensory and motor processes involving specialized contributions from each cerebral hemisphere.
Type de document :
Article dans une revue
The Journal of Experimental Biology, The Company of Biologists 2012, 215, pp.2950-2959. 〈10.1242/jeb.071944〉
Liste complète des métadonnées

Littérature citée [37 références]  Voir  Masquer  Télécharger

https://hal-univ-paris10.archives-ouvertes.fr/hal-01478484
Contributeur : Administrateur Hal Nanterre <>
Soumis le : lundi 4 décembre 2017 - 16:47:41
Dernière modification le : mercredi 4 juillet 2018 - 23:14:12

Fichier

Sexual_Signal_in_Canary_Song.p...
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

Citation

Roderick A. Suthers, Eric Vallet, Michel Kreutzer. Bilateral Coordination and the Motor Basis of Female Preference for Sexual Signals in Canary Song. The Journal of Experimental Biology, The Company of Biologists 2012, 215, pp.2950-2959. 〈10.1242/jeb.071944〉. 〈hal-01478484〉

Partager

Métriques

Consultations de la notice

53

Téléchargements de fichiers

16