Diversity and complexity in the acoustic behaviour of Dacyllus flavicaudus (Pomacentridae) |
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Authors: | Eric Parmentier Loïc Kéver Margarida Casadevall David Lecchini |
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Affiliation: | 1. Laboratoire de Morphologie Fonctionnelle et Evolutive, Institut de chimie, Bat. B6c, Université de Liège, 4000, Liège, Belgium 2. Unitat de Biologia Animal, Facultat de Ciències, Universitat de Girona, Campus de Montilivi s/n, 17071, Girona, Spain 3. Institut de Recherche pour le Développement (IRD), UR 128 (CoRéUs), 101 Promenade Roger Laroque, BP A5, Noumea, 98848, New Caledonia
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Abstract: | Synchronous underwater audio–video recordings and a passive acoustic detector were used to study the behaviour of Dascyllus flavicaudus. These damselfish produced sounds during six different behaviours and showed three different colour patterns while doing so. These sounds can be grouped into three classes: sounds associated with (1) fighting; (2) mating/visiting and (3) chasing and signal jumps. Moreover, the evolution of the different kinds of sound is discussed: the first calls could be a single pulse originating in teeth snapping. Modifications in the rhythm and number of pulses allowed the fish to build new messages. Daily recordings showed that sound production rates were higher at sunrise and sunset than during the day and that no sound was produced during the night. However, the kinds of call were different: sunrise sounds seemed mainly associated with mating/visiting, whereas the sounds associated with chasing and to signal jumps were mainly found at sunset. |
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