Allozyme Analysis of Hypostomus (Teleostei: Loricariidae) from the Rio Corumbá, Upper Rio Paraná Basin, Brazil

The taxonomy of the genus Hypostomus in the upper Rio Paraná basin presents some very complex issues. For this reason, an allozyme electrophoresis survey of 10 populations of Hypostomus from the Rio Corumbá basin was performed, revealing 25 loci from 14 enzyme systems. Allozyme data revealed diagnos...

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Bibliographic Details
Published in:Biochemical genetics 2008-12, Vol.46 (11-12), p.755-769
Main Authors: Zawadzki, Cláudio Henrique, Renesto, Erasmo, Mateus, Rogério Pincela
Format: Article
Language:English
Subjects:
allozymes
Animals
Biochemistry
Biomedical and Life Sciences
Biomedicine
Brazil
Catfishes - classification
Catfishes - genetics
Genetic markers
heterozygosity
Heterozygote
Human Genetics
Isoenzymes - genetics
Isoenzymes - metabolism
loci
Medical Microbiology
Species Specificity
surveys
taxonomy
Zoology
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Summary:The taxonomy of the genus Hypostomus in the upper Rio Paraná basin presents some very complex issues. For this reason, an allozyme electrophoresis survey of 10 populations of Hypostomus from the Rio Corumbá basin was performed, revealing 25 loci from 14 enzyme systems. Allozyme data revealed diagnostic genetic markers for the four nominal species analyzed (Hypostomus ancistroides, H. iheringi, H. margaritifer, and H. regani) and for six possible undescribed species. The mean expected heterozygosity of the populations ranged from 0.009 in H. iheringi to 0.099 in Hypostomus sp. 4. The genetically most similar populations (I = 0.954) were H. iheringi and Hypostomus sp. 2; the most divergent (D = 0.839) were H. iheringi and H. ancistroides.
ISSN:0006-2928
1573-4927
DOI:10.1007/s10528-008-9191-5