Posthatching development of spinal motoneurons in the angelfish Pterophyllum scalare.
Identifieur interne : 000574 ( Main/Exploration ); précédent : 000573; suivant : 000575Posthatching development of spinal motoneurons in the angelfish Pterophyllum scalare.
Auteurs : M. Yoshida [Japon] ; M. Fudoji ; H. Sakamoto ; K. UematsuSource :
- Brain, behavior and evolution [ 0006-8977 ] ; 1999.
English descriptors
- KwdEn :
- MESH :
- cytology : Spinal Cord.
- growth & development : Spinal Cord.
- physiology : Axons, Cell Differentiation, Fishes, Motor Activity, Motor Neurons, Swimming.
- ultrastructure : Axons.
- Animals, Histocytochemistry, Larva.
Abstract
We investigated the posthatching developmental sequence of spinal motoneurons innervating the axial muscles in the teleost angelfish, Pterophyllum scalare, by means of retrograde labeling with horseradish peroxidase. Two discrete types of spinal motoneurons, primary-type motoneurons and secondary motoneurons were labeled in a temporally different sequence during the course of larval development. These two types of motoneurons were morphologically distinguishable from one other. Primary-type motoneurons are generated by day 1 posthatching and do not increase in number over the observed period (to day 12 posthatching). In contrast, the secondary motoneurons increase in number through posthatching day 3. Differentiation of the spinal motoneurons appears to be nearly complete a few days before the onset of free swimming. In addition, the data suggest that the differentiation of secondary motoneurons precedes the development of the red muscle that is to be innervated by the motoneurons.
DOI: 6593
PubMed: 10343084
Affiliations:
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Le document en format XML
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Sakamoto</name></author><author><name sortKey="Uematsu, K" sort="Uematsu, K" uniqKey="Uematsu K" first="K" last="Uematsu">K. 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Yoshida</name><affiliation wicri:level="1"><nlm:affiliation>Laboratory of Fish Physiology, Faculty of Applied Biological Science, Hiroshima University, Higashi-Hiroshima, Japan. yosidam@ipc.hiroshima-u.ac.jp</nlm:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>Laboratory of Fish Physiology, Faculty of Applied Biological Science, Hiroshima University, Higashi-Hiroshima</wicri:regionArea><wicri:noRegion>Higashi-Hiroshima</wicri:noRegion></affiliation></author><author><name sortKey="Fudoji, M" sort="Fudoji, M" uniqKey="Fudoji M" first="M" last="Fudoji">M. Fudoji</name></author><author><name sortKey="Sakamoto, H" sort="Sakamoto, H" uniqKey="Sakamoto H" first="H" last="Sakamoto">H. Sakamoto</name></author><author><name sortKey="Uematsu, K" sort="Uematsu, K" uniqKey="Uematsu K" first="K" last="Uematsu">K. Uematsu</name></author></analytic><series><title level="j">Brain, behavior and evolution</title><idno type="ISSN">0006-8977</idno><imprint><date when="1999" type="published">1999</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term><term>Axons (physiology)</term><term>Axons (ultrastructure)</term><term>Cell Differentiation (physiology)</term><term>Fishes (physiology)</term><term>Histocytochemistry</term><term>Larva</term><term>Motor Activity (physiology)</term><term>Motor Neurons (physiology)</term><term>Spinal Cord (cytology)</term><term>Spinal Cord (growth & development)</term><term>Swimming (physiology)</term></keywords><keywords scheme="MESH" qualifier="cytology" xml:lang="en"><term>Spinal Cord</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Spinal Cord</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Axons</term><term>Cell Differentiation</term><term>Fishes</term><term>Motor Activity</term><term>Motor Neurons</term><term>Swimming</term></keywords><keywords scheme="MESH" qualifier="ultrastructure" xml:lang="en"><term>Axons</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Histocytochemistry</term><term>Larva</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We investigated the posthatching developmental sequence of spinal motoneurons innervating the axial muscles in the teleost angelfish, Pterophyllum scalare, by means of retrograde labeling with horseradish peroxidase. Two discrete types of spinal motoneurons, primary-type motoneurons and secondary motoneurons were labeled in a temporally different sequence during the course of larval development. These two types of motoneurons were morphologically distinguishable from one other. Primary-type motoneurons are generated by day 1 posthatching and do not increase in number over the observed period (to day 12 posthatching). In contrast, the secondary motoneurons increase in number through posthatching day 3. Differentiation of the spinal motoneurons appears to be nearly complete a few days before the onset of free swimming. In addition, the data suggest that the differentiation of secondary motoneurons precedes the development of the red muscle that is to be innervated by the motoneurons.</div></front></TEI><affiliations><list><country><li>Japon</li></country></list><tree><noCountry><name sortKey="Fudoji, M" sort="Fudoji, M" uniqKey="Fudoji M" first="M" last="Fudoji">M. Fudoji</name><name sortKey="Sakamoto, H" sort="Sakamoto, H" uniqKey="Sakamoto H" first="H" last="Sakamoto">H. Sakamoto</name><name sortKey="Uematsu, K" sort="Uematsu, K" uniqKey="Uematsu K" first="K" last="Uematsu">K. Uematsu</name></noCountry><country name="Japon"><noRegion><name sortKey="Yoshida, M" sort="Yoshida, M" uniqKey="Yoshida M" first="M" last="Yoshida">M. Yoshida</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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