A cytogenetic study of Diplomystes mesembrinus (Teleostei, Siluriformes, Diplomystidae) with a discussion of chromosome evolution in siluriforms

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dc.contributor.authorOliveira, Claudio [UNESP]
dc.contributor.authorGosztonyi, Atila E.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionCentro Nacional Patagónico
dc.date.accessioned2014-05-27T11:19:52Z
dc.date.available2014-05-27T11:19:52Z
dc.date.issued2000-01-01
dc.description.abstractThe mitotic chromosomes, nucleolus organizer regions (NORs), C-banding pattern and nuclear DNA content of Diplomystes mesembrinus were studied. The karyotype, with 2n=56 chromosomes (22m+24sm+6st+4a), has a high chromosome arm number (NF = 102), one chromosome pair with NORs, and a very small amount of heterochromatin. The NOR-bearing arm is entirely heterochromatic and exhibits a marked size polymorphism. The diploid DNA content detected in erythrocyte nuclei of D. mesembrinus was 2.57 ± 0.15 pg/nucleus. The chromosome evolution in Siluriformes is discussed on the basis of available cytogenetic data and it is proposed that 2n=56 is synapomorphic for the order.en
dc.description.affiliationDepartamento de Morfologia Instituto de Biociências Universidade Estadual Paulista, 18618-000, Botucatu, SP
dc.description.affiliationCentro Nacional Patagónico, 9120, Puerto Madryn, Chubut
dc.description.affiliationUnespDepartamento de Morfologia Instituto de Biociências Universidade Estadual Paulista, 18618-000, Botucatu, SP
dc.format.extent31-37
dc.identifierhttp://dx.doi.org/10.1080/00087114.2000.10589178
dc.identifierhttp://www.caryologia.unifi.it/past_volumes/53_1/53_1abst.html
dc.identifier.citationCaryologia, v. 53, n. 1, p. 31-37, 2000.
dc.identifier.doi10.1080/00087114.2000.10589178
dc.identifier.issn0008-7114
dc.identifier.scopus2-s2.0-0013102899
dc.identifier.urihttp://hdl.handle.net/11449/66051
dc.identifier.wosWOS:000089280000004
dc.language.isoeng
dc.relation.ispartofCaryologia
dc.relation.ispartofjcr0.608
dc.relation.ispartofsjr0,281
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectC-band
dc.subjectCytogenetics
dc.subjectDiplomystes mesembrinus
dc.subjectDiplomystidae
dc.subjectDNA content
dc.subjectNOR
dc.subjectSiluriformes
dc.titleA cytogenetic study of Diplomystes mesembrinus (Teleostei, Siluriformes, Diplomystidae) with a discussion of chromosome evolution in siluriformsen
dc.typeArtigo
dcterms.licensehttp://journalauthors.tandf.co.uk/permissions/reusingOwnWork.asp
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt

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