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

被引：0
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作者：
Cláudio Henrique Zawadzki
Erasmo Renesto
Rogério Pincela Mateus
机构：
[1] Universidade Estadual de Maringá,Núcleo de Pesquisas em Limnologia, Ictiologia e Aqüicultura
[2] Universidade Estadual do Centro-Oeste,Departamento de Ciências Biológicas
[3] CEDETEG,undefined
来源：
Biochemical Genetics | 2008年 / 46卷
关键词：
Genetic variability; Heterozygosity; Hypostominae; Neotropical fishes; Siluriformes;
D O I：
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中图分类号：
学科分类号：
摘要：
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.
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页码：755 / 769
页数：14
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