Show simple item record Bertollo, Luiz Antonio Carlos Born, Guassenir Gonçalves Dergam, Jorge Fenocchio, Alberto Sergio Moreira Filho, Orlando 2010-12-23T22:24:41Z 2010-12-23T22:24:41Z 2000
dc.identifier.citation BERTOLLO, L. A. C. et al. A Biodiversity approach in the Neotropical erythrinidae fish, Hoplias malabaricus. Karyotypic survey, geographic distribution of cytotypes and cytotaxonomic considerations. Chromosome Research, Holanda, v. 8, p. 603-613, 2000. Disponível em: <>. Acesso em: 23 dez. 2010. pt_BR
dc.description.abstract Hoplias malabaricus, a widely distributed neotropical freshwater fish, shows a conspicuous karyotypic diversification. An overview of this diversity is presented here comprising several Brazilian populations, and some others from Argentina, Uruguay and Surinam. Seven general cytotypes are clearly identified on the basis of their diploid number (2n 39 to 2n 42), chromosomal morphology and sex chromosome systems, which can be clustered into two major karyotypic groups. This clustering suggests that karyotype structure would be more informative than the diploid number regarding cytotype relationships in this fish group. While some cytotypes show a wide geographical distribution, some others appear to be endemic to speci¢c hydrographic basins. Sympatric cytotypes can occur without detection of hybrid forms; this situation points to a lack of gene flow, a fact that is also reinforced by studies with genomic markers. The karyotypic data support the view that the nominal taxon H. malabaricus corresponds to a species complex comprising distinct evolutionary units, each with well-established chromosomal differences. pt_BR
dc.language.iso eng pt_BR
dc.rights restrict access
dc.subject Cytotaxonomy pt_BR
dc.subject Geographic distribution pt_BR
dc.subject Hoplias malabaricus fish pt_BR
dc.subject Karyotypic diversity pt_BR
dc.subject Sympatric cytotypes pt_BR
dc.title A biodiversity approach in the neotropical Erythrinidae fish, Hoplias malabaricus. Karyotypic survey, geographic distribution of cytotypes and cytotaxonomic considerations pt_BR
dc.type article pt_BR

Files in this item

This item appears in the following Collection(s)


  • ICB - Artigos publicados em periódicos
  • Show simple item record