Morphological and genetic characterization of swimbladder non-inflation in angelfish Pterophyllum scalare (Cichlidae)
Identifieur interne : 000473 ( Main/Exploration ); précédent : 000472; suivant : 000474Morphological and genetic characterization of swimbladder non-inflation in angelfish Pterophyllum scalare (Cichlidae)
Auteurs : D. Zilberg [Israël] ; R. Ofir [Israël] ; T. Rabinski [Israël] ; A. Diamant [Israël]Source :
- Aquaculture : (Amsterdam) [ 0044-8486 ] ; 2004.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Génétique, Aquiculture.
English descriptors
- KwdEn :
Abstract
Abnormal development of the swimbladder is described in angelfish, Pterophyllum scalare (Lichtenstein 1823), a popular freshwater ornamental fish widely cultured in a range of strains and varieties. Non-inflated swimbladders in some individuals became apparent when larvae reached an age of 2 weeks. Affected fish were incapable of maintaining their position in the water body and sank to the tank bottom, resting on their flanks. Swimming bouts involved arduous tail movements in an attempt to maintain their position in the water body. Affected fish had slender trunks and partly folded backward dorsal and ventral fins. Histologically, affected fish had a solid cluster of hypertrophic gas gland cells and a hyperplastic rete mirabile instead of a gas-inflated swimbladder. Although it was not determined whether atmospheric air is obligatory for initial inflation of the swimbladder in larvae of this species, the evidence presented suggests that access to the water surface for this purpose in angelfish may not be obligatory. Dilated swimbladders were observed in 1-day-old larvae that were still attached to the hatching stick or had dropped to the tank bottom, with no contact to the water surface. Larvae that had been collected from the water surface displayed similarly dilated swimbladders. The possible cause of swimbladder non-inflation in angelfish is presently under investigation. Although the aetiology remains unknown, we found some alterations in gene expression that were associated with swimbladder non-inflation. The underlying factors have yet to be determined, although genomic alterations, environmental conditions or induced mutation, which involves both factors, are suspected as contributory factors.
Affiliations:
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Diamant</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Department of Pathobiology, National Center for Mariculture, Israel Oceanographic and Limnological Research</s1><s2>Eilat 88112</s2><s3>ISR</s3><sZ>4 aut.</sZ></inist:fA14><country>Israël</country><wicri:noRegion>Eilat 88112</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">04-0200311</idno><date when="2004">2004</date><idno type="stanalyst">PASCAL 04-0200311 INIST</idno><idno type="RBID">Pascal:04-0200311</idno><idno type="wicri:Area/PascalFrancis/Corpus">000011</idno><idno type="wicri:Area/PascalFrancis/Curation">000015</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000010</idno><idno type="wicri:doubleKey">0044-8486:2004:Zilberg D:morphological:and:genetic</idno><idno type="wicri:Area/Main/Merge">000474</idno><idno type="wicri:Area/Main/Curation">000473</idno><idno type="wicri:Area/Main/Exploration">000473</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Morphological and genetic characterization of swimbladder non-inflation in angelfish Pterophyllum scalare (Cichlidae)</title><author><name sortKey="Zilberg, D" sort="Zilberg, D" uniqKey="Zilberg D" first="D." last="Zilberg">D. Zilberg</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>The Department of Dryland Biotechnologies, Jacob Blaustein Institute for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus</s1><s2>84990</s2><s3>ISR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Israël</country><wicri:noRegion>84990</wicri:noRegion></affiliation></author><author><name sortKey="Ofir, R" sort="Ofir, R" uniqKey="Ofir R" first="R." last="Ofir">R. Ofir</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>The Department of Dryland Biotechnologies, Jacob Blaustein Institute for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus</s1><s2>84990</s2><s3>ISR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Israël</country><wicri:noRegion>84990</wicri:noRegion></affiliation></author><author><name sortKey="Rabinski, T" sort="Rabinski, T" uniqKey="Rabinski T" first="T." last="Rabinski">T. Rabinski</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>The Department of Microbiology and Immunology, Ben-Gurion University of the Negev</s1><s2>84100</s2><s3>ISR</s3><sZ>3 aut.</sZ></inist:fA14><country>Israël</country><wicri:noRegion>84100</wicri:noRegion></affiliation></author><author><name sortKey="Diamant, A" sort="Diamant, A" uniqKey="Diamant A" first="A." last="Diamant">A. Diamant</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Department of Pathobiology, National Center for Mariculture, Israel Oceanographic and Limnological Research</s1><s2>Eilat 88112</s2><s3>ISR</s3><sZ>4 aut.</sZ></inist:fA14><country>Israël</country><wicri:noRegion>Eilat 88112</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Aquaculture : (Amsterdam)</title><title level="j" type="abbreviated">Aquaculture : (Amst.)</title><idno type="ISSN">0044-8486</idno><imprint><date when="2004">2004</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Aquaculture : (Amsterdam)</title><title level="j" type="abbreviated">Aquaculture : (Amst.)</title><idno type="ISSN">0044-8486</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aquaculture</term><term>Characterization</term><term>Cichlidae</term><term>Genetics</term><term>Morphology</term><term>Swimbladder</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Morphologie</term><term>Génétique</term><term>Caractérisation</term><term>Vessie natatoire</term><term>Aquiculture</term><term>Cichlidae</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Génétique</term><term>Aquiculture</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abnormal development of the swimbladder is described in angelfish, Pterophyllum scalare (Lichtenstein 1823), a popular freshwater ornamental fish widely cultured in a range of strains and varieties. Non-inflated swimbladders in some individuals became apparent when larvae reached an age of 2 weeks. Affected fish were incapable of maintaining their position in the water body and sank to the tank bottom, resting on their flanks. Swimming bouts involved arduous tail movements in an attempt to maintain their position in the water body. Affected fish had slender trunks and partly folded backward dorsal and ventral fins. Histologically, affected fish had a solid cluster of hypertrophic gas gland cells and a hyperplastic rete mirabile instead of a gas-inflated swimbladder. Although it was not determined whether atmospheric air is obligatory for initial inflation of the swimbladder in larvae of this species, the evidence presented suggests that access to the water surface for this purpose in angelfish may not be obligatory. Dilated swimbladders were observed in 1-day-old larvae that were still attached to the hatching stick or had dropped to the tank bottom, with no contact to the water surface. Larvae that had been collected from the water surface displayed similarly dilated swimbladders. The possible cause of swimbladder non-inflation in angelfish is presently under investigation. Although the aetiology remains unknown, we found some alterations in gene expression that were associated with swimbladder non-inflation. The underlying factors have yet to be determined, although genomic alterations, environmental conditions or induced mutation, which involves both factors, are suspected as contributory factors.</div></front></TEI><affiliations><list><country><li>Israël</li></country></list><tree><country name="Israël"><noRegion><name sortKey="Zilberg, D" sort="Zilberg, D" uniqKey="Zilberg D" first="D." last="Zilberg">D. Zilberg</name></noRegion><name sortKey="Diamant, A" sort="Diamant, A" uniqKey="Diamant A" first="A." last="Diamant">A. Diamant</name><name sortKey="Ofir, R" sort="Ofir, R" uniqKey="Ofir R" first="R." last="Ofir">R. Ofir</name><name sortKey="Rabinski, T" sort="Rabinski, T" uniqKey="Rabinski T" first="T." last="Rabinski">T. Rabinski</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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