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Allozyme differentiation and relationships within Hypostomus Lacépède, 1803 (Osteichthyes: Loricariidae) from the upper Paraguay River basin, Brazil

Authors :
Renesto, Erasmo
Zawadzki, Cláudio H.
de Paiva, Suzana
Source :
Biochemical Systematics & Ecology. Dec2007, Vol. 35 Issue 12, p869-876. 8p.
Publication Year :
2007

Abstract

Abstract: Nine hypostomine populations from Manso Reservoir (Rio Manso and Rio Cuiabá, upper Paraguay River basin, Brazil) were surveyed using allozyme electrophoresis. Three, sampled at the same sites, were not identified to the species level and were designated as Hypostomus sp. 1, Hypostomus sp. 2 and Hypostomus sp. 3. The survey resulted in 25 loci from 14 scored enzyme systems. Allozyme data allowed diagnostic marker recording for all species analyzed, including the undescribed taxa. Mean expected heterozygosity values were quite variable, ranging from 0.029 to 0.079. Hypotheses to explain this variation are discussed. The allelic frequencies and Nei''s genetic identity values showed that Hypostomus sp. 1, Hypostomus sp. 2 and Hypostomus sp. 3 should be considered true biological species, and distinct from the other five Hypostomus species and Pterygoplichthys anisitsi. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
03051978
Volume :
35
Issue :
12
Database :
Academic Search Index
Journal :
Biochemical Systematics & Ecology
Publication Type :
Academic Journal
Accession number :
27356217
Full Text :
https://doi.org/10.1016/j.bse.2007.06.002