Chromosomal studies in some Indian Lepidoptera
Identifieur interne : 000701 ( Istex/Corpus ); précédent : 000700; suivant : 000702Chromosomal studies in some Indian Lepidoptera
Auteurs : Y. GuptaSource :
- Chromosoma [ 0009-5915 ] ; 1964-01-01.
English descriptors
- Teeft :
- Acad, Bivalent, Bivalents, Bombyx, Bombyx mori, Chiasma, Chromosomal, Chromosomal bodies, Chromosome, Chromosome number, Chromosome numbers, Chromosomiques, Comparative study, Diakinetic bivalents, Diffuse stage, Ehiasmata, Erebia, Genus, Groupe tyndarus, Gupta, Haploid, Haploid number, Heteropycnotic pair, Indian lepidoptera, Indica, Lepidoptera, Lesse, Longitudinal pairing, Metaphase, Metaphase plates, Mori, Nucleolus, Oogenesis, Other species, Parallel conjugation, Philosamia, Philosamia cynthia, Polar view, Polyploidy, Primary spermatocytes, Second metaphase plates, September, Spermatocyte, Spermatogenesis, Spermatogonial, Spermatogonial metaphase plate, Synizesis, Univalents, Vanessa, Vanessa indica.
Abstract
Summary: 1. Cytological studies have been carried out during spermatogenesis of fifteen species. 2. A peculiar synizesis phase occurs normally in the early prophase stage of primary spermatocytes. 3. The homologous chromosomal threads undergo a longitudinal pairing during synizesis. 4. Typical diplotene stage has not been discovered; instead, a diffuse phase intervenes between pachytene and diakinesis. 5. In the diakinetic bivalents the presence of one or two completely terminalized chiasmata can be justified. There are a few instances, however, where certain bivalents are precociously resolved intou nivalents disclosing most probably a failure of chiasma-formation in them. The question, therefore, whether definite chiasmata are formed in Lepidoptera cannot be answered with absolute certainty. 6. By a comparative study of the chromosomal garnitures in the congeneric forms investigated herewith, such as Vanessa indica and V. kashmirensis, and Earias insulana and E. fabia, it has been concluded that a number discrepancy in related species must be attributed to fusions and fragmentations of original chromosomes and not to polyploidy. 7. A male homogamety occurs in all the species studied. 8. Any relationship between a sex-chromosome pair and the nucleolus could not be established.
Url:
DOI: 10.1007/BF00319989
Links to Exploration step
ISTEX:5388DFD5F7502CE00C9EF738FAB081FDB0B9EF8CLe document en format XML
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Cytological studies have been carried out during spermatogenesis of fifteen species. 2. A peculiar synizesis phase occurs normally in the early prophase stage of primary spermatocytes. 3. The homologous chromosomal threads undergo a longitudinal pairing during synizesis. 4. Typical diplotene stage has not been discovered; instead, a diffuse phase intervenes between pachytene and diakinesis. 5. In the diakinetic bivalents the presence of one or two completely terminalized chiasmata can be justified. There are a few instances, however, where certain bivalents are precociously resolved intou nivalents disclosing most probably a failure of chiasma-formation in them. The question, therefore, whether definite chiasmata are formed in Lepidoptera cannot be answered with absolute certainty. 6. By a comparative study of the chromosomal garnitures in the congeneric forms investigated herewith, such as Vanessa indica and V. kashmirensis, and Earias insulana and E. fabia, it has been concluded that a number discrepancy in related species must be attributed to fusions and fragmentations of original chromosomes and not to polyploidy. 7. A male homogamety occurs in all the species studied. 8. Any relationship between a sex-chromosome pair and the nucleolus could not be established.</p></abstract><textClass><keywords scheme="Journal Subject"><list><head>Life Sciences</head><item><term>Human Genetics</term></item><item><term>Biochemistry, general</term></item><item><term>Cell Biology</term></item><item><term>Developmental Biology</term></item><item><term>Eukaryotic Microbiology</term></item><item><term>Animal Genetics and Genomics</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="1964-05-14">Created</change><change when="1964-01-01">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/ark:/67375/1BB-B7NQZK99-6/fulltext.txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="corpus springer-journals not found" wicri:toSee="no header"><istex:xmlDeclaration>version="1.0" encoding="UTF-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//Springer-Verlag//DTD A++ V2.4//EN" URI="http://devel.springer.de/A++/V2.4/DTD/A++V2.4.dtd" name="istex:docType"></istex:docType><istex:document><Publisher><PublisherInfo><PublisherName>Springer-Verlag</PublisherName><PublisherLocation>Berlin/Heidelberg</PublisherLocation></PublisherInfo><Journal><JournalInfo JournalProductType="ArchiveJournal" NumberingStyle="Unnumbered"><JournalID>412</JournalID><JournalPrintISSN>0009-5915</JournalPrintISSN><JournalElectronicISSN>1432-0886</JournalElectronicISSN><JournalTitle>Chromosoma</JournalTitle><JournalAbbreviatedTitle>Chromosoma</JournalAbbreviatedTitle><JournalSubjectGroup><JournalSubject Type="Primary">Life Sciences</JournalSubject><JournalSubject Type="Secondary">Human Genetics</JournalSubject><JournalSubject Type="Secondary">Biochemistry, general</JournalSubject><JournalSubject Type="Secondary">Cell Biology</JournalSubject><JournalSubject Type="Secondary">Developmental Biology</JournalSubject><JournalSubject Type="Secondary">Eukaryotic Microbiology</JournalSubject><JournalSubject Type="Secondary">Animal Genetics and Genomics</JournalSubject></JournalSubjectGroup></JournalInfo><Volume><VolumeInfo VolumeType="Regular" TocLevels="0"><VolumeIDStart>15</VolumeIDStart><VolumeIDEnd>15</VolumeIDEnd><VolumeIssueCount>5</VolumeIssueCount></VolumeInfo><Issue IssueType="Regular"><IssueInfo TocLevels="0"><IssueIDStart>5</IssueIDStart><IssueIDEnd>5</IssueIDEnd><IssueArticleCount>12</IssueArticleCount><IssueHistory><CoverDate><DateString>10. DEZEMBER 1964</DateString><Year>1964</Year><Month>1</Month></CoverDate></IssueHistory><IssueCopyright><CopyrightHolderName>Springer-Verlag</CopyrightHolderName><CopyrightYear>1964</CopyrightYear></IssueCopyright></IssueInfo><Article ID="Art2"><ArticleInfo Language="En" ArticleType="OriginalPaper" NumberingStyle="Unnumbered" TocLevels="0" ContainsESM="No"><ArticleID>BF00319989</ArticleID><ArticleDOI>10.1007/BF00319989</ArticleDOI><ArticleSequenceNumber>2</ArticleSequenceNumber><ArticleTitle Language="En">Chromosomal studies in some Indian Lepidoptera</ArticleTitle><ArticleFirstPage>540</ArticleFirstPage><ArticleLastPage>561</ArticleLastPage><ArticleHistory><RegistrationDate><Year>2004</Year><Month>8</Month><Day>26</Day></RegistrationDate><Received><Year>1964</Year><Month>5</Month><Day>14</Day></Received></ArticleHistory><ArticleCopyright><CopyrightHolderName>Springer-Verlag</CopyrightHolderName><CopyrightYear>1964</CopyrightYear></ArticleCopyright><ArticleGrants Type="Regular"><MetadataGrant Grant="OpenAccess"></MetadataGrant><AbstractGrant Grant="OpenAccess"></AbstractGrant><BodyPDFGrant Grant="Restricted"></BodyPDFGrant><BodyHTMLGrant Grant="Restricted"></BodyHTMLGrant><BibliographyGrant Grant="Restricted"></BibliographyGrant><ESMGrant Grant="Restricted"></ESMGrant></ArticleGrants><ArticleContext><JournalID>412</JournalID><VolumeIDStart>15</VolumeIDStart><VolumeIDEnd>15</VolumeIDEnd><IssueIDStart>5</IssueIDStart><IssueIDEnd>5</IssueIDEnd></ArticleContext></ArticleInfo><ArticleHeader><AuthorGroup><Author AffiliationIDS="Aff1"><AuthorName DisplayOrder="Western"><GivenName>Y.</GivenName><FamilyName>Gupta</FamilyName></AuthorName></Author><Affiliation ID="Aff1"><OrgDivision>The Department of Zoology</OrgDivision><OrgName>University of Allahabad</OrgName><OrgAddress><Country>India</Country></OrgAddress></Affiliation></AuthorGroup><Abstract ID="Abs1" Language="En"><Heading>Summary</Heading><Para><OrderedList><ListItem><ItemNumber>1.</ItemNumber><ItemContent><Para>Cytological studies have been carried out during spermatogenesis of fifteen species.</Para></ItemContent></ListItem><ListItem><ItemNumber>2.</ItemNumber><ItemContent><Para>A peculiar synizesis phase occurs normally in the early prophase stage of primary spermatocytes.</Para></ItemContent></ListItem><ListItem><ItemNumber>3.</ItemNumber><ItemContent><Para>The homologous chromosomal threads undergo a longitudinal pairing during synizesis.</Para></ItemContent></ListItem><ListItem><ItemNumber>4.</ItemNumber><ItemContent><Para>Typical diplotene stage has not been discovered; instead, a diffuse phase intervenes between pachytene and diakinesis.</Para></ItemContent></ListItem><ListItem><ItemNumber>5.</ItemNumber><ItemContent><Para>In the diakinetic bivalents the presence of one or two completely terminalized chiasmata can be justified. There are a few instances, however, where certain bivalents are precociously resolved intou nivalents disclosing most probably a failure of chiasma-formation in them. The question, therefore, whether definite chiasmata are formed in <Emphasis Type="Italic">Lepidoptera</Emphasis> cannot be answered with absolute certainty.</Para></ItemContent></ListItem><ListItem><ItemNumber>6.</ItemNumber><ItemContent><Para>By a comparative study of the chromosomal garnitures in the congeneric forms investigated herewith, such as <Emphasis Type="Italic">Vanessa indica</Emphasis> and <Emphasis Type="Italic">V. kashmirensis</Emphasis>, and <Emphasis Type="Italic">Earias insulana</Emphasis> and <Emphasis Type="Italic">E. fabia</Emphasis>, it has been concluded that a number discrepancy in related species must be attributed to fusions and fragmentations of original chromosomes and not to polyploidy.</Para></ItemContent></ListItem><ListItem><ItemNumber>7.</ItemNumber><ItemContent><Para>A male homogamety occurs in all the species studied.</Para></ItemContent></ListItem><ListItem><ItemNumber>8.</ItemNumber><ItemContent><Para>Any relationship between a sex-chromosome pair and the nucleolus could not be established.</Para></ItemContent></ListItem></OrderedList></Para></Abstract><ArticleNote Type="Misc"><SimplePara>With 63 Figures in the Text</SimplePara></ArticleNote><ArticleNote Type="Misc"><SimplePara>Part of a dissertation submitted to Allahabad University for D.Phil.</SimplePara></ArticleNote></ArticleHeader><NoBody></NoBody></Article></Issue></Volume></Journal></Publisher></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Chromosomal studies in some Indian Lepidoptera</title></titleInfo><titleInfo type="alternative" contentType="CDATA"><title>Chromosomal studies in some Indian Lepidoptera</title></titleInfo><name type="personal"><namePart type="given">Y.</namePart><namePart type="family">Gupta</namePart><affiliation>The Department of Zoology, University of Allahabad, India</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="OriginalPaper" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-1JC4F85T-7">research-article</genre><originInfo><publisher>Springer-Verlag</publisher><place><placeTerm type="text">Berlin/Heidelberg</placeTerm></place><dateCreated encoding="w3cdtf">1964-05-14</dateCreated><dateIssued encoding="w3cdtf">1964-01-01</dateIssued><copyrightDate encoding="w3cdtf">1964</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><abstract lang="en">Summary: 1. Cytological studies have been carried out during spermatogenesis of fifteen species. 2. A peculiar synizesis phase occurs normally in the early prophase stage of primary spermatocytes. 3. The homologous chromosomal threads undergo a longitudinal pairing during synizesis. 4. Typical diplotene stage has not been discovered; instead, a diffuse phase intervenes between pachytene and diakinesis. 5. In the diakinetic bivalents the presence of one or two completely terminalized chiasmata can be justified. There are a few instances, however, where certain bivalents are precociously resolved intou nivalents disclosing most probably a failure of chiasma-formation in them. The question, therefore, whether definite chiasmata are formed in Lepidoptera cannot be answered with absolute certainty. 6. By a comparative study of the chromosomal garnitures in the congeneric forms investigated herewith, such as Vanessa indica and V. kashmirensis, and Earias insulana and E. fabia, it has been concluded that a number discrepancy in related species must be attributed to fusions and fragmentations of original chromosomes and not to polyploidy. 7. A male homogamety occurs in all the species studied. 8. Any relationship between a sex-chromosome pair and the nucleolus could not be established.</abstract><relatedItem type="host"><titleInfo><title>Chromosoma</title></titleInfo><titleInfo type="abbreviated"><title>Chromosoma</title></titleInfo><genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre><originInfo><publisher>Springer</publisher><dateIssued encoding="w3cdtf">1964-01-01</dateIssued><copyrightDate encoding="w3cdtf">1964</copyrightDate></originInfo><subject><genre>Life Sciences</genre><topic>Human Genetics</topic><topic>Biochemistry, general</topic><topic>Cell Biology</topic><topic>Developmental Biology</topic><topic>Eukaryotic Microbiology</topic><topic>Animal Genetics and Genomics</topic></subject><identifier type="ISSN">0009-5915</identifier><identifier type="eISSN">1432-0886</identifier><identifier type="JournalID">412</identifier><identifier type="IssueArticleCount">12</identifier><identifier type="VolumeIssueCount">5</identifier><part><date>1964</date><detail type="volume"><number>15</number><caption>vol.</caption></detail><detail type="issue"><number>5</number><caption>no.</caption></detail><extent unit="pages"><start>540</start><end>561</end></extent></part><recordInfo><recordOrigin>Springer-Verlag, 1964</recordOrigin></recordInfo></relatedItem><identifier type="istex">5388DFD5F7502CE00C9EF738FAB081FDB0B9EF8C</identifier><identifier type="ark">ark:/67375/1BB-B7NQZK99-6</identifier><identifier type="DOI">10.1007/BF00319989</identifier><identifier type="ArticleID">BF00319989</identifier><identifier type="ArticleID">Art2</identifier><accessCondition type="use and reproduction" contentType="copyright">Springer-Verlag, 1964</accessCondition><recordInfo><recordContentSource authority="ISTEX" authorityURI="https://loaded-corpus.data.istex.fr" valueURI="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-3XSW68JL-F">springer</recordContentSource><recordOrigin>Springer-Verlag, 1964</recordOrigin></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/ark:/67375/1BB-B7NQZK99-6/record.json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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