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dc.contributor.authorFeldberg, Eliana-
dc.contributor.authorPorto, Jorge Ivan Rebelo-
dc.contributor.authorAlves-Brinn, M. N.-
dc.contributor.authorMendonça, M. N C-
dc.contributor.authorBenzaquem, Denise Corrêa-
dc.date.accessioned2020-06-15T22:03:47Z-
dc.date.available2020-06-15T22:03:47Z-
dc.date.issued2004-
dc.identifier.urihttps://repositorio.inpa.gov.br/handle/1/18897-
dc.description.abstractB chromosomes are reported in three different Amazonian cichlid species. One to three supernumerary microchromosomes were detected in the peacock bass Cichla monoculus (4 out of 28 specimens) and Cichla sp. (4 out of 13 specimens), and pike cichlids Crenicichla reticulata (2 out of 5 specimens), with no similar standard chromosomal morphology. C-banding revealed that B chromosomes are totally heterochromatic. We suggest two scenarios for the origin of these B chromosomes either by chromosomal breakdowns due to mutagenic action of methyl mercury present in the aquatic environment or by interspecific origin due to hybridization events. Copyright © 2004 S. Karger AG, Basel.en
dc.language.isoenpt_BR
dc.relation.ispartofVolume 106, Número 2-4, Pags. 195-198pt_BR
dc.rightsRestrito*
dc.subjectAutosomeen
dc.subjectC Bandingen
dc.subjectChromosome Structureen
dc.subjectCichlaen
dc.subjectCichla Monoculusen
dc.subjectCrenicichla Reticulataen
dc.subjectFishen
dc.subjectMicrochromosomeen
dc.subjectNonhumanen
dc.subjectPriority Journalen
dc.subjectStandardizationen
dc.subjectSupernumerary Chromosomeen
dc.subjectAnimalen
dc.subjectChromosomesen
dc.subjectCichlidsen
dc.subjectHeterochromatinen
dc.subjectKidneyen
dc.subjectSouth Americaen
dc.subjectBairdiella Ronchusen
dc.subjectCichlaen
dc.subjectCichla Monoculusen
dc.subjectCichla Sp.en
dc.subjectCichlidaeen
dc.subjectCrenicaraen
dc.subjectCrenicichlaen
dc.titleB chromosomes in Amazonian cichlid speciesen
dc.typeArtigopt_BR
dc.identifier.doi10.1159/000079287-
dc.publisher.journalCytogenetic and Genome Researchpt_BR
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