A natural triploid in Trichomycterus davisi (Siluriformes, Trichomycteridae): mitotic and meiotic characterization by chromosome banding and synaptonemal complex analyses

dc.contributorUniversidade Estadual de Maringá (UEM)
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:22:39Z
dc.date.available2014-05-20T15:22:39Z
dc.date.created2014-05-20T15:22:39Z
dc.date.issued2002-08-01
dc.identifierGenetica. Dordrecht: Kluwer Academic Publ, v. 115, n. 3, p. 253-258, 2002.
dc.identifier0016-6707
dc.identifierhttp://hdl.handle.net/11449/33597
dc.identifier10.1023/A:1020667526552
dc.identifierWOS:000178541200002
dc.description.abstractWithin a total of 50 analyzed specimens a male individual of Trichomycterus davisi has been recorded with 81 chromosomes including 60 metacentric, 18 submetacentric and three subtelocentric chromosomes. When compared with diploid individuals (2n = 54) and the morphological standard of chromosomes, this male is a triploid with 3 = 81 chromosomes. Since staining with silver nitrate indicates three active nucleolar organizer regions (NORs), the three NOR- bearing chromosomes in this individual are genetically active. Analysis of the synaptonemal complex (SC) by electronic microscopy shows that there is an incomplete pairing of the third set of chromosomes in the triploid individual.
dc.languageeng
dc.publisherKluwer Academic Publ
dc.relationGenetica
dc.relation1.366
dc.relation0,649
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectchromomycin A(3)
dc.subjectkaryotype
dc.subjectNOR band
dc.subjectsynaptonemal complex
dc.subjectTrichomycterus davisi
dc.subjecttriploid
dc.titleA natural triploid in Trichomycterus davisi (Siluriformes, Trichomycteridae): mitotic and meiotic characterization by chromosome banding and synaptonemal complex analyses
dc.typeArtículos de revistas


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