Show simple item record Born, Guassenir Gonçalves Bertollo, Luiz Antonio Carlos 2010-12-20T11:33:35Z 2010-12-20T11:33:35Z 2001
dc.identifier.citation BORN, G. G. ; BERTOLLO, L. A C . Comparative cytogenetics among allopatric populations of the fish Hoplias malabaricus. Cytotypes with 2n = 42 chromosomes. Genetica (The Hague), Holanda, v. 110, p. 01-09, 2001. pt_BR
dc.description.abstract The available chromosomal data on Hoplias malabaricus make possible the identification of three major karyotypic forms in this fish group, all of them bearing 2n=42 chromosomes, and named as Cytotypes A, B and E in previous studies. While Cytotype A and B share a general macrokaryotypic feature, Cytotype E is well differentiated concerning the morphology and size of some chromosome pairs. On the other hand, Cytotype B presents an exclusive XX/XY sex chromosome system. Six allopatric populations, belonging to Cytotype A, were subjected to cytogenetic analysis in the present study. Despite their basic karyotypic similarity, some differences in the chromosome formulae, as well as in the heterochromatin and Ag-NORs locations, were observed among populations indicating that they no more correspond to a unit, at least in the cytogenetical level. pt_BR
dc.language.iso eng pt_BR
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dc.subject Allopatric populations pt_BR
dc.subject Erythrinidae fish pt_BR
dc.subject Hoplias malabaricus pt_BR
dc.subject Karyotypic differentiation pt_BR
dc.title Comparative cytogenetics among allopatric populations of the fish, Hoplias malabaricus. Cytotypes with 2n = 42 chromosomes pt_BR
dc.type article pt_BR

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