On the origin and development of the cement glands in Etroplus maculatus (Bloch)
Identifieur interne : 000424 ( Istex/Curation ); précédent : 000423; suivant : 000425On the origin and development of the cement glands in Etroplus maculatus (Bloch)
Auteurs : S. JonesSource :
- Proceedings of the Indian Academy of Sciences - Section B [ 0370-0097 ] ; 1937-10-01.
Abstract
Summary: 1. There are three pairs of cement glands inEtroplus maculatus situated on the dorsal side of the head, the anterior-most pair being smaller than the posterior two pairs. 2. They produce mucus which help to attach the larva to the bottom till it is capable of independent swimming movement. 3. The gland rudiments first appear when the embryo is thirty-eight hours old as thickenings of the inner layer of the ectoderm. 4. The gland cells soon enclose a cavity into which the secretion is poured and by the time of hatching the outer layer of ectoderm over the cavity is lost. 5. The glands grow in size and remain active till the fourth day after which they begin to degenerate. They shrink in size, get flattened out and the superficial layer of ectoderm grows over them. They disappear by the seventh day.
Url:
DOI: 10.1007/BF03051431
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<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">On the origin and development of the cement glands in Etroplus maculatus (Bloch)</title><author><name sortKey="Jones, S" sort="Jones, S" uniqKey="Jones S" first="S." last="Jones">S. Jones</name><affiliation><mods:affiliation>University Zoological Research Laboratory, Madras</mods:affiliation><wicri:noCountry code="subField">Madras</wicri:noCountry></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:35ACA64A24A06F13EC9AA420857D1276F79BE494</idno><date when="1937" year="1937">1937</date><idno type="doi">10.1007/BF03051431</idno><idno type="url">https://api.istex.fr/document/35ACA64A24A06F13EC9AA420857D1276F79BE494/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000425</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000425</idno><idno type="wicri:Area/Istex/Curation">000424</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">On the origin and development of the cement glands in Etroplus maculatus (Bloch)</title><author><name sortKey="Jones, S" sort="Jones, S" uniqKey="Jones S" first="S." last="Jones">S. Jones</name><affiliation><mods:affiliation>University Zoological Research Laboratory, Madras</mods:affiliation><wicri:noCountry code="subField">Madras</wicri:noCountry></affiliation></author></analytic><monogr></monogr><series><title level="j">Proceedings of the Indian Academy of Sciences - Section B</title><title level="j" type="abbrev">Proceedings of the Indian Academy of Sciences - Section B</title><idno type="ISSN">0370-0097</idno><imprint><publisher>Springer India</publisher><pubPlace>New Delhi</pubPlace><date type="published" when="1937-10-01">1937-10-01</date><biblScope unit="volume">6</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="251">251</biblScope><biblScope unit="page" to="261">261</biblScope></imprint><idno type="ISSN">0370-0097</idno></series><idno type="istex">35ACA64A24A06F13EC9AA420857D1276F79BE494</idno><idno type="DOI">10.1007/BF03051431</idno><idno type="ArticleID">BF03051431</idno><idno type="ArticleID">Art7</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0370-0097</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Summary: 1. There are three pairs of cement glands inEtroplus maculatus situated on the dorsal side of the head, the anterior-most pair being smaller than the posterior two pairs. 2. They produce mucus which help to attach the larva to the bottom till it is capable of independent swimming movement. 3. The gland rudiments first appear when the embryo is thirty-eight hours old as thickenings of the inner layer of the ectoderm. 4. The gland cells soon enclose a cavity into which the secretion is poured and by the time of hatching the outer layer of ectoderm over the cavity is lost. 5. The glands grow in size and remain active till the fourth day after which they begin to degenerate. They shrink in size, get flattened out and the superficial layer of ectoderm grows over them. They disappear by the seventh day.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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