Karyotypic diversity between allopatric populations of the group Hoplias malabaricus (Characiformes: Erythrinidae): evolutionary and biogeographic considerations

被引：23

作者：

Blanco, Daniel Rodrigues ^{[1
]}

Lui, Roberto Laridondo ^{[1
]}

Carlos Bertollo, Luiz Antonio ^{[1
]}

Margarido, Vladimir Pavan ^{[2
]}

Filho, Orlando Moreira ^{[1
]}

机构：

[1] Univ Fed Sao Carlos, Dept Genet & Evolucao, BR-13565905 Sao Carlos, SP, Brazil

[2] Univ Estadual Oeste Parana, Ctr Ciencias Biol & Saude, BR-85814110 Cascavel, PR, Brazil

来源：

NEOTROPICAL ICHTHYOLOGY | 2010年 / 8卷 / 02期

基金：

巴西圣保罗研究基金会;

关键词：

Cytogenetics; Trahira; Karyomorph A; FISH; Geographic isolation; SEX-CHROMOSOME SYSTEM; SAO-FRANCISCO; FISH; PISCES; CYTOGENETICS; CYTOTYPES; FORMS; RDNA; DNA; 5S;

D O I：

10.1590/S1679-62252010000200015

中图分类号：

Q95 [动物学];

学科分类号：

071002 ;

摘要：

Three populations of the group Hoplias malabaricus from the hydrographic basins of the Sao Francisco, Araguaia/Tocantins and Xingu Rivers in Brazil were analyzed using classic cytogenetic methods (Giemsa staining, C-banding and Ag-NORs) and molecular methods (fluorescent in situ hybridization with 18S rDNA, 5S rDNA and 5SHindIII satellite DNA probes). The chromosome markers allowed the characterization of these populations as belonging to karyomorph A and the detection of inter-population divergences. These differences likely stem from different evolutionary histories resulting from geographic isolation between populations associated to the dispersive mode of these organisms, reinforcing genetic diversity in the group Hoplias malabaricus.

引用

页码：361 / 368

页数：8

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