Vision and visual variation in the peacock blenny
Identifieur interne : 001197 ( Istex/Corpus ); précédent : 001196; suivant : 001198Vision and visual variation in the peacock blenny
Auteurs : E. M. White ; D. M. Gonçalves ; J. C. Partridge ; R. F. OliveiraSource :
- Journal of Fish Biology [ 0022-1112 ] ; 2004-07.
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Abstract
Microspectrophotometry (MSP) revealed the presence of a rod and at least two cone classes (mid‐ and long‐wavelength sensitive) in the intertidal peacock blenny Salaria pavo. Both rhodopsin and porphyropsin based visual pigments were found in all fish, together with high individual variation in the chromophore ratio. The three morphs (females, males and sneaker males) differed in their spectral sensitivities (as measured with the optomotor response) with sneakers having higher sensitivity at long‐wavelengths than either males or females. This long‐wave displacement of peak sensitivity could be due to elevated proportions of porphyropsin visual pigments in the sneakers’ retinae. The lenses of all morphs exhibited a short‐wavelength cut‐off and an unusual layer of carotenoid was found behind the retinal pigment epithelium and in the outer segments of some cones. These screening pigments could serve a photo‐protective role or to improve visual contrast. No short‐wave photoreceptors were located using MSP. This indicates that this cone class may be absent or present at very low numbers in the retina. This is the first in depth study of the visual system of a blenniid fish and indicates potential within‐species visual variation that may be related to the species’ habitat and morph‐specific behavioural requirements.
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DOI: 10.1111/j.0022-1112.2004.00446.x
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White</name><affiliation><mods:affiliation>School of Biological Sciences, University of Bristol, Woodland Road, Bristol, BS8 1UG, U.K. and</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: elizabeth.white@bristol.ac.uk</mods:affiliation></affiliation></author><author><name sortKey="Goncalves, D M" sort="Goncalves, D M" uniqKey="Goncalves D" first="D. M." last="Gonçalves">D. M. Gonçalves</name><affiliation><mods:affiliation>Unidade de Investigação em Eco‐Etologia, Instituto Superior de Psicologia Aplicada (ISPA), Rua Jardim do Tabaco 34, 1049‐041 Lisboa, Portugal</mods:affiliation></affiliation></author><author><name sortKey="Partridge, J C" sort="Partridge, J C" uniqKey="Partridge J" first="J. C." last="Partridge">J. C. 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Both rhodopsin and porphyropsin based visual pigments were found in all fish, together with high individual variation in the chromophore ratio. The three morphs (females, males and sneaker males) differed in their spectral sensitivities (as measured with the optomotor response) with sneakers having higher sensitivity at long‐wavelengths than either males or females. This long‐wave displacement of peak sensitivity could be due to elevated proportions of porphyropsin visual pigments in the sneakers’ retinae. The lenses of all morphs exhibited a short‐wavelength cut‐off and an unusual layer of carotenoid was found behind the retinal pigment epithelium and in the outer segments of some cones. These screening pigments could serve a photo‐protective role or to improve visual contrast. No short‐wave photoreceptors were located using MSP. This indicates that this cone class may be absent or present at very low numbers in the retina. This is the first in depth study of the visual system of a blenniid fish and indicates potential within‐species visual variation that may be related to the species’ habitat and morph‐specific behavioural requirements.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>E. M. White</name><affiliations><json:string>School of Biological Sciences, University of Bristol, Woodland Road, Bristol, BS8 1UG, U.K. and</json:string><json:string>E-mail: elizabeth.white@bristol.ac.uk</json:string></affiliations></json:item><json:item><name>D. M. GonÇalves</name><affiliations><json:string>Unidade de Investigação em Eco‐Etologia, Instituto Superior de Psicologia Aplicada (ISPA), Rua Jardim do Tabaco 34, 1049‐041 Lisboa, Portugal</json:string></affiliations></json:item><json:item><name>J. C. 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Both rhodopsin and porphyropsin based visual pigments were found in all fish, together with high individual variation in the chromophore ratio. The three morphs (females, males and sneaker males) differed in their spectral sensitivities (as measured with the optomotor response) with sneakers having higher sensitivity at long‐wavelengths than either males or females. This long‐wave displacement of peak sensitivity could be due to elevated proportions of porphyropsin visual pigments in the sneakers’ retinae. The lenses of all morphs exhibited a short‐wavelength cut‐off and an unusual layer of carotenoid was found behind the retinal pigment epithelium and in the outer segments of some cones. These screening pigments could serve a photo‐protective role or to improve visual contrast. No short‐wave photoreceptors were located using MSP. This indicates that this cone class may be absent or present at very low numbers in the retina. 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M.</givenNames><familyName>White</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a2"><personName><givenNames>D. M.</givenNames><familyName>GonÇalves</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a1"><personName><givenNames>J. C.</givenNames><familyName>Partridge</familyName></personName></creator><creator creatorRole="author" xml:id="cr4" affiliationRef="#a2"><personName><givenNames>R. F.</givenNames><familyName>Oliveira</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1"><unparsedAffiliation><i>School of Biological Sciences, University of Bristol, Woodland Road, Bristol, BS8 1UG, U.K. and</i></unparsedAffiliation></affiliation><affiliation xml:id="a2" countryCode="PT"><unparsedAffiliation><i>Unidade de Investigação em Eco‐Etologia, Instituto Superior de Psicologia Aplicada (ISPA), Rua Jardim do Tabaco 34, 1049‐041 Lisboa, Portugal</i></unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en"><keyword xml:id="k1">intertidal fishes</keyword><keyword xml:id="k2">light environment</keyword><keyword xml:id="k3">microspectrophotometry</keyword><keyword xml:id="k4">optomotor response</keyword><keyword xml:id="k5">visual variation</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><p>Microspectrophotometry (MSP) revealed the presence of a rod and at least two cone classes (mid‐ and long‐wavelength sensitive) in the intertidal peacock blenny <i>Salaria pavo</i>. Both rhodopsin and porphyropsin based visual pigments were found in all fish, together with high individual variation in the chromophore ratio. The three morphs (females, males and sneaker males) differed in their spectral sensitivities (as measured with the optomotor response) with sneakers having higher sensitivity at long‐wavelengths than either males or females. This long‐wave displacement of peak sensitivity could be due to elevated proportions of porphyropsin visual pigments in the sneakers’ retinae. The lenses of all morphs exhibited a short‐wavelength cut‐off and an unusual layer of carotenoid was found behind the retinal pigment epithelium and in the outer segments of some cones. These screening pigments could serve a photo‐protective role or to improve visual contrast. No short‐wave photoreceptors were located using MSP. This indicates that this cone class may be absent or present at very low numbers in the retina. This is the first in depth study of the visual system of a blenniid fish and indicates potential within‐species visual variation that may be related to the species’ habitat and morph‐specific behavioural requirements.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Vision and visual variation in the peacock blenny</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>vision in the peacock blenny</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Vision and visual variation in the peacock blenny</title></titleInfo><name type="personal"><namePart type="given">E. M.</namePart><namePart type="family">White</namePart><affiliation>School of Biological Sciences, University of Bristol, Woodland Road, Bristol, BS8 1UG, U.K. and</affiliation><affiliation>E-mail: elizabeth.white@bristol.ac.uk</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">D. M.</namePart><namePart type="family">GonÇalves</namePart><affiliation>Unidade de Investigação em Eco‐Etologia, Instituto Superior de Psicologia Aplicada (ISPA), Rua Jardim do Tabaco 34, 1049‐041 Lisboa, Portugal</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J. C.</namePart><namePart type="family">Partridge</namePart><affiliation>School of Biological Sciences, University of Bristol, Woodland Road, Bristol, BS8 1UG, U.K. and</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">R. F.</namePart><namePart type="family">Oliveira</namePart><affiliation>Unidade de Investigação em Eco‐Etologia, Instituto Superior de Psicologia Aplicada (ISPA), Rua Jardim do Tabaco 34, 1049‐041 Lisboa, Portugal</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Science Ltd</publisher><place><placeTerm type="text">Oxford, UK; Malden, USA</placeTerm></place><dateIssued encoding="w3cdtf">2004-07</dateIssued><edition>(Received 24 March 2003, Accepted 14 April 2004)</edition><copyrightDate encoding="w3cdtf">2004</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">15</extent><extent unit="tables">1</extent><extent unit="references">87</extent></physicalDescription><abstract lang="en">Microspectrophotometry (MSP) revealed the presence of a rod and at least two cone classes (mid‐ and long‐wavelength sensitive) in the intertidal peacock blenny Salaria pavo. Both rhodopsin and porphyropsin based visual pigments were found in all fish, together with high individual variation in the chromophore ratio. The three morphs (females, males and sneaker males) differed in their spectral sensitivities (as measured with the optomotor response) with sneakers having higher sensitivity at long‐wavelengths than either males or females. This long‐wave displacement of peak sensitivity could be due to elevated proportions of porphyropsin visual pigments in the sneakers’ retinae. The lenses of all morphs exhibited a short‐wavelength cut‐off and an unusual layer of carotenoid was found behind the retinal pigment epithelium and in the outer segments of some cones. These screening pigments could serve a photo‐protective role or to improve visual contrast. No short‐wave photoreceptors were located using MSP. This indicates that this cone class may be absent or present at very low numbers in the retina. This is the first in depth study of the visual system of a blenniid fish and indicates potential within‐species visual variation that may be related to the species’ habitat and morph‐specific behavioural requirements.</abstract><subject lang="en"><genre>keywords</genre><topic>intertidal fishes</topic><topic>light environment</topic><topic>microspectrophotometry</topic><topic>optomotor response</topic><topic>visual variation</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Fish Biology</title></titleInfo><genre type="journal">journal</genre><identifier type="ISSN">0022-1112</identifier><identifier type="eISSN">1095-8649</identifier><identifier type="DOI">10.1111/(ISSN)1095-8649</identifier><identifier type="PublisherID">JFB</identifier><part><date>2004</date><detail type="volume"><caption>vol.</caption><number>65</number></detail><detail type="issue"><caption>no.</caption><number>1</number></detail><extent unit="pages"><start>227</start><end>250</end><total>24</total></extent></part></relatedItem><identifier type="istex">A2140D937CAB7B4D478938553EB31F6093456D6A</identifier><identifier type="DOI">10.1111/j.0022-1112.2004.00446.x</identifier><identifier type="ArticleID">JFB446</identifier><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Blackwell Science Ltd</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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