Sound production in the Ponto-Caspian goby Neogobius fluviatilis and acoustic affinities within the Gobius-lineage: implications for phylogeny

Abstract

Event Abstract Back to Event Sound production in the Ponto-Caspian goby Neogobius fluviatilis and acoustic affinities within the Gobius-lineage: implications for phylogeny Stefano Malavasi1*, Sven Horvatić2, Francesco Cavraro1 and Davor Zanella2 1 University of Venice, Department of Environmental Sciences, Informatics and Statistics, Italy 2 University of Zagreb, Departmen of Zoology, Croatia The aim of this work is to provide the vocal repertoire of the Ponto-Caspian goby Neogobius fluviatilis and to compare the acoustical properties of this species with those of the other soniferous Mediterranean gobies belonging to the so called “Gobius-lineage”. Vocalisations and associated behaviours were recorded under controlled aquarium conditions in female and male Neogobius fluviatilis. Sound emission was elicited by means of “intruder tests”, using an individual of the same or of the opposite sex as intruder, and recording sounds by means of an hydrophone placed at few cm from the shelter, provided as a nest for the resident fish. Five acoustic properties, including spectral and temporal ones, were measured from 13 individuals. The vocal repertoire of the species consisted of sequences of short vocalizations during both agonistic and reproductive intraspecific interactions. The wave form of each sound resolves in a pure sine wave composed of rapidly repeated pulses. Sounds lasted about 200 ms, showing an average fundamental frequency of about 80 Hz (table 1). Sound properties did not differ between the reproductive and the aggressive contexts, being the general structure of the sounds highly stereotyped. Individual means of five acoustic properties characterising the sounds of seven species of the so called “Gobius” lineage, including Neogobius, were then entered in a Discriminant Function Analysis to assess how well species were differentiated on acoustic basis, and their degree of affinities. Results suggested that the pulse repetition rate of the sounds, that is the relative tonal/pulsatile nature of the sounds, is the most important property in differentiating species and that this property may contain a high level of phylogenetic signal, as the species producing tonal sounds are clustered together also according with the recent molecular phylogenies, available in the current literature. Results were also discussed in the light of the geological and phylogeographic events that are supposed to have driven the diversification of European gobies. Keywords: Gobies, acoustic properties, Messinian salinity crisis, Behavior, Pulse Rate Conference: XV European Congress of Ichthyology, Porto, Portugal, 7 Sep - 11 Sep, 2015. Presentation Type: Oral Presentation Topic: Phylogeny, Systematics and Genetics Citation: Malavasi S, Horvatić S, Cavraro F and Zanella D (2015). Sound production in the Ponto-Caspian goby Neogobius fluviatilis and acoustic affinities within the Gobius-lineage: implications for phylogeny. Front. Mar. Sci. Conference Abstract: XV European Congress of Ichthyology. doi: 10.3389/conf.fmars.2015.03.00051 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 10 Nov 2015; Published Online: 10 Nov 2015. * Correspondence: Prof. Stefano Malavasi, University of Venice, Department of Environmental Sciences, Informatics and Statistics, Venice, Italy, mala@unive.it Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Stefano Malavasi Sven Horvatić Francesco Cavraro Davor Zanella Google Stefano Malavasi Sven Horvatić Francesco Cavraro Davor Zanella Google Scholar Stefano Malavasi Sven Horvatić Francesco Cavraro Davor Zanella PubMed Stefano Malavasi Sven Horvatić Francesco Cavraro Davor Zanella Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.