Abstract:
: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.
journal_name
Biochem Genetjournal_title
Biochemical geneticsauthors
Zawadzki CH,Renesto E,Mateus RPdoi
10.1007/s10528-008-9191-5subject
Has Abstractpub_date
2008-12-01 00:00:00pages
755-69issue
11-12eissn
0006-2928issn
1573-4927journal_volume
46pub_type
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