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Interspecific variation of warning calls in piranhas: a comparative analysis
Melotte, Geoffrey; Vigouroux, Régis; Michel, Christian et al.
2016Zoology 2016, the 23rd Benelux Congress of Zoology
 

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Abstract :
[en] Fish sounds are known to be species-specific, possessing unique temporal and spectral features. We have recorded and compared sounds in eight piranha species to evaluate the potential role of acoustic communication as a driving force in clade diversification. All piranha species showed the same kind of sound-producing mechanism: sonic muscles originate on vertebrae and attach to a tendon surrounding the bladder ventrally. Contractions of the sound-producing muscles force swimbladder vibration and dictate the fundamental frequency. It results the calling features of the eight piranha species logically share many common characteristics. In all the species, the calls are harmonic sounds composed of multiple continuous cycles. However, the sounds of Serrasalmus elongatus (higher number of cycles and high fundamental frequency) and S. manueli (long cycle periods and low fundamental frequency) are clearly distinguishable from the other species. The sonic mechanism being largely conserved throughout piranha evolution, acoustic communication can hardly be considered as the main driving force in the diversification process. However, sounds of some species are clearly distinguishable despite the short space for variations supporting the need for specific communication. Behavioural studies are needed to clearly understand the eventual role of the calls during spawning events.
Research center :
AFFISH-RC - Applied and Fundamental FISH Research Center - ULiège
Disciplines :
Zoology
Environmental sciences & ecology
Author, co-author :
Melotte, Geoffrey ;  Université de Liège > Département de Biologie, Ecologie et Evolution > Morphologie fonctionnelle et évolutive
Vigouroux, Régis;  Hydreco Guyane > Laboratoire Environnement de Petit Saut
Michel, Christian  ;  Université de Liège > Département de Biologie, Ecologie et Evolution > Département de Biologie, Ecologie et Evolution
Parmentier, Eric  ;  Université de Liège > Département de Biologie, Ecologie et Evolution > Morphologie fonctionnelle et évolutive
Language :
English
Title :
Interspecific variation of warning calls in piranhas: a comparative analysis
Publication date :
17 December 2016
Event name :
Zoology 2016, the 23rd Benelux Congress of Zoology
Event place :
Anvers, Belgium
Event date :
16 et 17 décembre 2016
Audience :
International
Available on ORBi :
since 19 December 2016

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