Structure and possible functions of constant-frequency calls in Ariopsis seemanni (Osteichthyes, Ariidae).

In the 1970s, Tavolga conducted a series of experiments in which he found behavioral evidence that the vocalizations of the catfish species Ariopsis felis may play a role in a coarse form of echolocation. Based on his findings, he postulated a similar function for the calls of closely related catfis...

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Autores principales:	Daniel Schmidtke, Jochen Schulz, Jörg Hartung, Karl-Heinz Esser
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/df1b678817e44a8c8bba5f9c9e49f818
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spelling	oai:doaj.org-article:df1b678817e44a8c8bba5f9c9e49f8182021-11-18T07:43:32ZStructure and possible functions of constant-frequency calls in Ariopsis seemanni (Osteichthyes, Ariidae).1932-620310.1371/journal.pone.0064864https://doaj.org/article/df1b678817e44a8c8bba5f9c9e49f8182013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23741408/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203In the 1970s, Tavolga conducted a series of experiments in which he found behavioral evidence that the vocalizations of the catfish species Ariopsis felis may play a role in a coarse form of echolocation. Based on his findings, he postulated a similar function for the calls of closely related catfish species. Here, we describe the physical characteristics of the predominant call-type of Ariopsis seemanni. In two behavioral experiments, we further explore whether A. seemanni uses these calls for acoustic obstacle detection by testing the hypothesis that the call-emission rate of individual fish should increase when subjects are confronted with novel objects, as it is known from other vertebrate species that use pulse-type signals to actively probe the environment. Audio-video monitoring of the fish under different obstacle conditions did not reveal a systematic increase in the number of emitted calls in the presence of novel objects or in dependence on the proximity between individual fish and different objects. These negative findings in combination with our current understanding of directional hearing in fishes (which is a prerequisite for acoustic obstacle detection) make it highly unlikely that A. seemanni uses its calls for acoustic obstacle detection. We argue that the calls are more likely to play a role in intra- or interspecific communication (e.g. in school formation or predator deterrence) and present results from a preliminary Y-maze experiment that are indicative for a positive phonotaxis of A. seemanni towards the calls of conspecifics.Daniel SchmidtkeJochen SchulzJörg HartungKarl-Heinz EsserPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 5, p e64864 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Daniel Schmidtke Jochen Schulz Jörg Hartung Karl-Heinz Esser Structure and possible functions of constant-frequency calls in Ariopsis seemanni (Osteichthyes, Ariidae).
description	In the 1970s, Tavolga conducted a series of experiments in which he found behavioral evidence that the vocalizations of the catfish species Ariopsis felis may play a role in a coarse form of echolocation. Based on his findings, he postulated a similar function for the calls of closely related catfish species. Here, we describe the physical characteristics of the predominant call-type of Ariopsis seemanni. In two behavioral experiments, we further explore whether A. seemanni uses these calls for acoustic obstacle detection by testing the hypothesis that the call-emission rate of individual fish should increase when subjects are confronted with novel objects, as it is known from other vertebrate species that use pulse-type signals to actively probe the environment. Audio-video monitoring of the fish under different obstacle conditions did not reveal a systematic increase in the number of emitted calls in the presence of novel objects or in dependence on the proximity between individual fish and different objects. These negative findings in combination with our current understanding of directional hearing in fishes (which is a prerequisite for acoustic obstacle detection) make it highly unlikely that A. seemanni uses its calls for acoustic obstacle detection. We argue that the calls are more likely to play a role in intra- or interspecific communication (e.g. in school formation or predator deterrence) and present results from a preliminary Y-maze experiment that are indicative for a positive phonotaxis of A. seemanni towards the calls of conspecifics.
format	article
author	Daniel Schmidtke Jochen Schulz Jörg Hartung Karl-Heinz Esser
author_facet	Daniel Schmidtke Jochen Schulz Jörg Hartung Karl-Heinz Esser
author_sort	Daniel Schmidtke
title	Structure and possible functions of constant-frequency calls in Ariopsis seemanni (Osteichthyes, Ariidae).
title_short	Structure and possible functions of constant-frequency calls in Ariopsis seemanni (Osteichthyes, Ariidae).
title_full	Structure and possible functions of constant-frequency calls in Ariopsis seemanni (Osteichthyes, Ariidae).
title_fullStr	Structure and possible functions of constant-frequency calls in Ariopsis seemanni (Osteichthyes, Ariidae).
title_full_unstemmed	Structure and possible functions of constant-frequency calls in Ariopsis seemanni (Osteichthyes, Ariidae).
title_sort	structure and possible functions of constant-frequency calls in ariopsis seemanni (osteichthyes, ariidae).
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/df1b678817e44a8c8bba5f9c9e49f818
work_keys_str_mv	AT danielschmidtke structureandpossiblefunctionsofconstantfrequencycallsinariopsisseemanniosteichthyesariidae AT jochenschulz structureandpossiblefunctionsofconstantfrequencycallsinariopsisseemanniosteichthyesariidae AT jorghartung structureandpossiblefunctionsofconstantfrequencycallsinariopsisseemanniosteichthyesariidae AT karlheinzesser structureandpossiblefunctionsofconstantfrequencycallsinariopsisseemanniosteichthyesariidae
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Structure and possible functions of constant-frequency calls in Ariopsis seemanni (Osteichthyes, Ariidae).

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