Light-dependent motor activity and photonegative behavior in the eel ( Anguilla anguilla L.)
Identifieur interne : 001F47 ( Main/Exploration ); précédent : 001F46; suivant : 001F48Light-dependent motor activity and photonegative behavior in the eel ( Anguilla anguilla L.)
Auteurs : Th. Van Veen [Suède, Allemagne] ; G. Hartwig [Suède, Allemagne] ; K. Müller [Suède, Allemagne]Source :
- Journal of comparative physiology [ 0340-7594 ] ; 1976-01-01.
Abstract
Summary: Light-dependent motor activity and phototactic behavior was investigated in 1) untreated, 2) blinded, and 3) blinded and pinealectomized eels (Anguilla anguilla L.). Neither blinding nor blinding combined with pinealectomy interfered with the observed nocturnal motor activity or the photonegative behavior characteristic for the untreated animals. However, an aluminum foil covering the skull of blinded animals altered the light-dependent motor activity pattern in contrast to blinded animals bearing a transparent plastic foil cover. Blinded animals with an aluminum foil covering the brain case exhibited a motor activity pattern resembling arrhythmicity. The motor activity pattern of 1) untreated, 2) blinded, as well as 3) blinded and pinealectomized eels followed an inversed light regime with a latency of about two days indicating that in the eel light is the dominatingZeitgeber triggering circadian motor activity patterns. The reported findings speak in favor of the existence of photosensitive areas in addition to the lateral eyes and the epiphysis cerebri. From the results of the covering experiments it is clear that these unknown photoreceptor sites must be located in the brain.
Url:
DOI: 10.1007/BF00605532
Affiliations:
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Van Veen</name><affiliation wicri:level="1"><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Zoology, University of Lund, Helgonavägen 3, S-223 62, Lund</wicri:regionArea><wicri:noRegion>Lund</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Allemagne</country><wicri:regionArea>Department of Anatomy and Cytobiology, Justus Liebig University, Aulweg 123, D-6300, Giessen</wicri:regionArea><wicri:noRegion>Giessen</wicri:noRegion><wicri:noRegion>Giessen</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Biology, Umeå University, S-90187, Umeå</wicri:regionArea><wicri:noRegion>Umeå</wicri:noRegion></affiliation></author><author><name sortKey="Hartwig, G" sort="Hartwig, G" uniqKey="Hartwig G" first="G." last="Hartwig">G. 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Physiol.</title><idno type="ISSN">0340-7594</idno><idno type="eISSN">1432-1351</idno><imprint><publisher>Springer-Verlag</publisher><pubPlace>Berlin/Heidelberg</pubPlace><date type="published" when="1976-01-01">1976-01-01</date><biblScope unit="volume">111</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="209">209</biblScope><biblScope unit="page" to="219">219</biblScope></imprint><idno type="ISSN">0340-7594</idno></series><idno type="istex">B2FF7D25DAB2B1221645A33E2C284C13D3DA1107</idno><idno type="DOI">10.1007/BF00605532</idno><idno type="ArticleID">Art7</idno><idno type="ArticleID">BF00605532</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0340-7594</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Summary: Light-dependent motor activity and phototactic behavior was investigated in 1) untreated, 2) blinded, and 3) blinded and pinealectomized eels (Anguilla anguilla L.). Neither blinding nor blinding combined with pinealectomy interfered with the observed nocturnal motor activity or the photonegative behavior characteristic for the untreated animals. However, an aluminum foil covering the skull of blinded animals altered the light-dependent motor activity pattern in contrast to blinded animals bearing a transparent plastic foil cover. Blinded animals with an aluminum foil covering the brain case exhibited a motor activity pattern resembling arrhythmicity. The motor activity pattern of 1) untreated, 2) blinded, as well as 3) blinded and pinealectomized eels followed an inversed light regime with a latency of about two days indicating that in the eel light is the dominatingZeitgeber triggering circadian motor activity patterns. The reported findings speak in favor of the existence of photosensitive areas in addition to the lateral eyes and the epiphysis cerebri. From the results of the covering experiments it is clear that these unknown photoreceptor sites must be located in the brain.</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>Suède</li></country></list><tree><country name="Suède"><noRegion><name sortKey="Van Veen, Th" sort="Van Veen, Th" uniqKey="Van Veen T" first="Th." last="Van Veen">Th. Van Veen</name></noRegion><name sortKey="Hartwig, G" sort="Hartwig, G" uniqKey="Hartwig G" first="G." last="Hartwig">G. Hartwig</name><name sortKey="Hartwig, G" sort="Hartwig, G" uniqKey="Hartwig G" first="G." last="Hartwig">G. Hartwig</name><name sortKey="Muller, K" sort="Muller, K" uniqKey="Muller K" first="K." last="Müller">K. Müller</name><name sortKey="Muller, K" sort="Muller, K" uniqKey="Muller K" first="K." last="Müller">K. Müller</name><name sortKey="Van Veen, Th" sort="Van Veen, Th" uniqKey="Van Veen T" first="Th." last="Van Veen">Th. Van Veen</name></country><country name="Allemagne"><noRegion><name sortKey="Van Veen, Th" sort="Van Veen, Th" uniqKey="Van Veen T" first="Th." last="Van Veen">Th. Van Veen</name></noRegion><name sortKey="Hartwig, G" sort="Hartwig, G" uniqKey="Hartwig G" first="G." last="Hartwig">G. Hartwig</name><name sortKey="Muller, K" sort="Muller, K" uniqKey="Muller K" first="K." last="Müller">K. Müller</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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