Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.12/3912
Título: Agonistic sounds signal male quality in the Lusitanian toadfish
Autor: Amorim, Maria Clara Pessoa
Conti, Carlotta
Modesto, Teresa
Gonçalves, Amparo
Fonseca, Paulo Jorge
Palavras-chave: Acoustic communication
Fish
Temporal cues
Spectral cues
Steroid hormones
Territorial defence
Data: 2015
Editora: Elsevier
Citação: Physiology & Behavior, 149, 192-198. doi: 10.1016/j.physbeh.2015.06.002
Resumo: Acoustic communication during agonistic behaviour is widespread in fishes. Yet, compared to other taxa, little is known on the information content of fish agonistic calls and their effect on territorial defence. Lusitanian toadfish males (Halobatrachus didactylus) are highly territorial during the breeding season and use sounds (boatwhistles, BW) to defend nests from intruders. BW present most energy in either the fundamental frequency, set by the contraction rate of the sonic muscles attached to the swimbladder, or in the harmonics, which are multiples of the fundamental frequency. Here we investigated if temporal and spectral features of BW produced during territorial defence reflect aspects of male quality that may be important in resolving disputes. We found that higher mean pulse period (i.e. lower fundamental frequency) reflected higher levels of 11-ketotestosterone (11KT), the main teleost androgen which, in turn, was significantly related with male condition (relative body mass and glycogen content). BW dominant harmonic mean and variability decreased with sonic muscle lipid content. We found no association between BW duration and male quality. Taken together, these results suggest that the spectral content of fish agonistic sounds may signal male features that are key in fight outcome.
Peer review: yes
URI: http://hdl.handle.net/10400.12/3912
DOI: 10.1016/j.physbeh.2015.06.002
ISSN: 0031-9384
Aparece nas colecções:MARE - Artigos em revistas internacionais

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