Effects of dopaminergic drugs on locomotor activity in teleost fish of the genus Oreochromis (Cichlidae): involvement of the telencephalon
Identifieur interne : 000625 ( Main/Exploration ); précédent : 000624; suivant : 000626Effects of dopaminergic drugs on locomotor activity in teleost fish of the genus Oreochromis (Cichlidae): involvement of the telencephalon
Auteurs : E. Y.-M Mok [Singapour] ; A. D Munro [Singapour]Source :
- Physiology & Behavior [ 0031-9384 ] ; 1998.
English descriptors
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Abstract
MOK, E. Y.-M. AND A. D. MUNRO. Effects of dopaminergic drugs on locomotor activity in teleost fish of the genus Oreochromis (Cichlidae): Involvement of the telencephalon. PHYSIOL BEHAV 64(3) 227–234, 1998.—Single Oreochromis niloticus and O. mossambicus were placed in an unfamiliar white basin for 21 min, and their activity in this open-field situation was recorded from overhead on video. Apomorphine added to the water (2–8 mg/liter) caused a significant increase in locomotor activity, as assessed by the frequency that a fish swam over a rectilinear array of lines drawn on the base. This effect was attenuated by chlorpromazine (2 mg/liter) and abolished by the D1 antagonist SCH-23390 (1 mg/liter); the D2 antagonist metoclopramide (8 mg/liter) had no effect. Removal of both hemispheres of the telencephalon abolished the response to apomorphine, whereas removal of only one hemisphere or cauterization of the nostrils had no effect. It is concluded that the role of the dopaminergic system in the regulation of locomotor activity is reminiscent of the mammalian mesolimbic, rather than the nigrostriatal, system but that further studies are required to determine the source of the dopaminergic innervation and its likely telencephalic targets.
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DOI: 10.1016/S0031-9384(98)00038-9
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Y.-M" last="Mok">E. Y.-M Mok</name><affiliation wicri:level="4"><country xml:lang="fr">Singapour</country><wicri:regionArea>Department of Biological Sciences, The National University of Singapore, Lower Kent Ridge Road, Singapore</wicri:regionArea><orgName type="university">Université nationale de Singapour</orgName></affiliation></author><author><name sortKey="Munro, A D" sort="Munro, A D" uniqKey="Munro A" first="A. D" last="Munro">A. D Munro</name><affiliation wicri:level="1"><country wicri:rule="url">Singapour</country></affiliation><affiliation wicri:level="4"><country xml:lang="fr">Singapour</country><wicri:regionArea>Department of Biological Sciences, The National University of Singapore, Lower Kent Ridge Road, Singapore</wicri:regionArea><orgName type="university">Université nationale de Singapour</orgName></affiliation></author></analytic><monogr></monogr><series><title level="j">Physiology & Behavior</title><title level="j" type="abbrev">PHB</title><idno type="ISSN">0031-9384</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1998">1998</date><biblScope unit="volume">64</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="227">227</biblScope><biblScope unit="page" to="234">234</biblScope></imprint><idno type="ISSN">0031-9384</idno></series><idno type="istex">307F3436770481FE394D8CAC24A7843FF6A360EA</idno><idno type="DOI">10.1016/S0031-9384(98)00038-9</idno><idno type="PII">S0031-9384(98)00038-9</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0031-9384</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Activity</term><term>Dopaminergic drugs</term><term>Telencephalon</term><term>Teleost fish</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">MOK, E. Y.-M. AND A. D. MUNRO. Effects of dopaminergic drugs on locomotor activity in teleost fish of the genus Oreochromis (Cichlidae): Involvement of the telencephalon. PHYSIOL BEHAV 64(3) 227–234, 1998.—Single Oreochromis niloticus and O. mossambicus were placed in an unfamiliar white basin for 21 min, and their activity in this open-field situation was recorded from overhead on video. Apomorphine added to the water (2–8 mg/liter) caused a significant increase in locomotor activity, as assessed by the frequency that a fish swam over a rectilinear array of lines drawn on the base. This effect was attenuated by chlorpromazine (2 mg/liter) and abolished by the D1 antagonist SCH-23390 (1 mg/liter); the D2 antagonist metoclopramide (8 mg/liter) had no effect. Removal of both hemispheres of the telencephalon abolished the response to apomorphine, whereas removal of only one hemisphere or cauterization of the nostrils had no effect. It is concluded that the role of the dopaminergic system in the regulation of locomotor activity is reminiscent of the mammalian mesolimbic, rather than the nigrostriatal, system but that further studies are required to determine the source of the dopaminergic innervation and its likely telencephalic targets.</div></front></TEI><affiliations><list><country><li>Singapour</li></country><orgName><li>Université nationale de Singapour</li></orgName></list><tree><country name="Singapour"><noRegion><name sortKey="Mok, E Y M" sort="Mok, E Y M" uniqKey="Mok E" first="E. Y.-M" last="Mok">E. Y.-M Mok</name></noRegion><name sortKey="Munro, A D" sort="Munro, A D" uniqKey="Munro A" first="A. D" last="Munro">A. D Munro</name><name sortKey="Munro, A D" sort="Munro, A D" uniqKey="Munro A" first="A. D" last="Munro">A. D Munro</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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