Roots of brain specializations : preferential left-eye use during mirror-image inspection in six species of teleost fish
Identifieur interne : 000024 ( PascalFrancis/Checkpoint ); précédent : 000023; suivant : 000025Roots of brain specializations : preferential left-eye use during mirror-image inspection in six species of teleost fish
Auteurs : V. A. Sovrano [Italie] ; C. Rainoldi [Italie] ; A. Bisazza [Italie] ; G. Vallortigara [Italie]Source :
- Behavioural brain research [ 0166-4328 ] ; 1999.
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Abstract
It has recently been reported that predator inspection is more likely to occur when a companion (i.e. the mirror image of the test animal) is visible on the left rather than on the right side of mosquitofish Gambusia holbrooki. This very unexpected outcome could be consistent with the hypothesis of a preferential use of the right eye during sustained fixation of a predator as well as of a preferential use of the left eye during fixation of conspecifics. We measured the time spent in monocular viewing during inspection of their own mirror images in females of six species of fish, belonging to different families-G. holbrooki, Xenotoca eiseni, Phoxinus phoxinus, Pterophyllum scalare, Xenopoecilus sarasinorum, and Trichogaster trichopterus. Results revealed a consistent left-eye preference during sustained fixation in all of the five species. Males of G. holbrooki, which do not normally show any social behaviour, did not exhibit any eye preferences during mirror-image inspection. We found, however, that they could be induced to manifest a left-eye preference, likewise females, if tested soon after capture, when some affiliative tendencies can be observed. These findings add to current evidence in a variety of vertebrate species for preferential involvement of structures located in the right side of the brain in response to the viewing of conspecifics.
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A." last="Sovrano">V. A. Sovrano</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of General Psychology, Università di Padova, Via Venezia 8</s1><s2>35131 Padua</s2><s3>ITA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Italie</country><wicri:noRegion>35131 Padua</wicri:noRegion><orgName type="university">Université de Padoue</orgName><placeName><settlement type="city">Padoue</settlement><region type="region" nuts="2">Vénétie</region></placeName></affiliation></author><author><name sortKey="Rainoldi, C" sort="Rainoldi, C" uniqKey="Rainoldi C" first="C." last="Rainoldi">C. Rainoldi</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of General Psychology, Università di Padova, Via Venezia 8</s1><s2>35131 Padua</s2><s3>ITA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Italie</country><wicri:noRegion>35131 Padua</wicri:noRegion><orgName type="university">Université de Padoue</orgName><placeName><settlement type="city">Padoue</settlement><region type="region" nuts="2">Vénétie</region></placeName></affiliation></author><author><name sortKey="Bisazza, A" sort="Bisazza, A" uniqKey="Bisazza A" first="A." last="Bisazza">A. Bisazza</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of General Psychology, Università di Padova, Via Venezia 8</s1><s2>35131 Padua</s2><s3>ITA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Italie</country><wicri:noRegion>35131 Padua</wicri:noRegion><orgName type="university">Université de Padoue</orgName><placeName><settlement type="city">Padoue</settlement><region type="region" nuts="2">Vénétie</region></placeName></affiliation></author><author><name sortKey="Vallortigara, G" sort="Vallortigara, G" uniqKey="Vallortigara G" first="G." last="Vallortigara">G. Vallortigara</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Psychology, Animal Cognition and Comparative Neuroscience Laboratory, Università di Trieste, Via dell'Università 7</s1><s2>34123 Trieste</s2><s3>ITA</s3><sZ>4 aut.</sZ></inist:fA14><country>Italie</country><wicri:noRegion>34123 Trieste</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Behavioural brain research</title><title level="j" type="abbreviated">Behav. brain res.</title><idno type="ISSN">0166-4328</idno><imprint><date when="1999">1999</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Behavioural brain research</title><title level="j" type="abbreviated">Behav. brain res.</title><idno type="ISSN">0166-4328</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animal</term><term>Brain (vertebrata)</term><term>Eye</term><term>Hemispheric specialization</term><term>Inspection</term><term>Laterality</term><term>Mirror image</term><term>Predation</term><term>Preference</term><term>Teleostei</term><term>Vision</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Oeil</term><term>Vision</term><term>Préférence</term><term>Latéralité</term><term>Image en miroir</term><term>Inspection</term><term>Prédation</term><term>Encéphale</term><term>Spécialisation hémisphérique</term><term>Animal</term><term>Teleostei</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">It has recently been reported that predator inspection is more likely to occur when a companion (i.e. the mirror image of the test animal) is visible on the left rather than on the right side of mosquitofish Gambusia holbrooki. This very unexpected outcome could be consistent with the hypothesis of a preferential use of the right eye during sustained fixation of a predator as well as of a preferential use of the left eye during fixation of conspecifics. We measured the time spent in monocular viewing during inspection of their own mirror images in females of six species of fish, belonging to different families-G. holbrooki, Xenotoca eiseni, Phoxinus phoxinus, Pterophyllum scalare, Xenopoecilus sarasinorum, and Trichogaster trichopterus. Results revealed a consistent left-eye preference during sustained fixation in all of the five species. Males of G. holbrooki, which do not normally show any social behaviour, did not exhibit any eye preferences during mirror-image inspection. We found, however, that they could be induced to manifest a left-eye preference, likewise females, if tested soon after capture, when some affiliative tendencies can be observed. These findings add to current evidence in a variety of vertebrate species for preferential involvement of structures located in the right side of the brain in response to the viewing of conspecifics.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0166-4328</s0></fA01><fA02 i1="01"><s0>BBREDI</s0></fA02><fA03 i2="1"><s0>Behav. brain res.</s0></fA03><fA05><s2>106</s2></fA05><fA06><s2>1-2</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Roots of brain specializations : preferential left-eye use during mirror-image inspection in six species of teleost fish</s1></fA08><fA11 i1="01" i2="1"><s1>SOVRANO (V. 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A." last="Sovrano">V. A. Sovrano</name></region><name sortKey="Bisazza, A" sort="Bisazza, A" uniqKey="Bisazza A" first="A." last="Bisazza">A. Bisazza</name><name sortKey="Rainoldi, C" sort="Rainoldi, C" uniqKey="Rainoldi C" first="C." last="Rainoldi">C. Rainoldi</name><name sortKey="Vallortigara, G" sort="Vallortigara, G" uniqKey="Vallortigara G" first="G." last="Vallortigara">G. Vallortigara</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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