CYTOGENETIC AND DNA CONTENT IN 6 GENERA OF THE FAMILY CALLICHTHYIDAE (PISCES, SILURIFORMES)

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dc.contributor.authorOliveira, C.
dc.contributor.authorAlmeidatoledo, L. F.
dc.contributor.authorMori, L.
dc.contributor.authorToledo, S. A.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:27:47Z
dc.date.available2014-05-20T15:27:47Z
dc.date.issued1993-04-01
dc.description.abstractCytogenetic studies involving conventional Giemsa staining, C-banding analysis and silver staining of NORs were performed on nine species belonging to six genera of the family Callichthyidae. The diploid number ranged from 2n = 44 to 2n = 100, the number of chromosomal pairs with NORs ranged from 1 to 4 and constitutive heterochromatin was mainly distributed in the centromeric and/or pericentromeric position of the chromosomes. The DNA content of erythrocytes from six species studied ranged from 1.18 +/- 0.07 to 2.77 +/- 0.22 pg/nucleus. The extensive variability in karyotypes and in nuclear DNA content detected are in accordance with the initial hypothesis that chromosome rearrangements and polyploidy have played a significant role in the evolutionary history of Callichthyidae.en
dc.description.affiliationUNIV SAO PAULO,INST BIOCIENCIAS,DEPT BIOL,SAO PAULO,BRAZIL
dc.format.extent171-188
dc.identifierhttp://www.caryologia.unifi.it/
dc.identifier.citationCaryologia. Florence: Univ Florence Botany Inst, v. 46, n. 2-3, p. 171-188, 1993.
dc.identifier.issn0008-7114
dc.identifier.urihttp://hdl.handle.net/11449/37716
dc.identifier.wosWOS:A1993MH88400009
dc.language.isoeng
dc.publisherUniv Florence Botany Inst
dc.relation.ispartofCaryologia
dc.relation.ispartofjcr0.608
dc.relation.ispartofsjr0,281
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectCALLICHTHYIDAEpt
dc.subjectKARYOTYPEpt
dc.subjectNORpt
dc.subjectC-BANDpt
dc.subjectDNA CONTENTpt
dc.titleCYTOGENETIC AND DNA CONTENT IN 6 GENERA OF THE FAMILY CALLICHTHYIDAE (PISCES, SILURIFORMES)en
dc.typeArtigo
dcterms.licensehttp://journalauthors.tandf.co.uk/preparation/copyright.asp
dcterms.rightsHolderUniv Florence Botany Inst

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