2006
DOI: 10.1111/j.1095-8649.2006.01291.x
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Genetic diversity of invasive and native Cichla (Pisces: Perciformes) populations in Brazil with evidence of interspecific hybridization

Abstract: Invasive and native populations of the Amazonian fishes 'peacock bass' Cichla monoculus and of a not yet described species 'blue tucunare´' here referred as Cichla sp. 'Azul' were analysed for genetic diversity using the hypervariable domain of the mitochondrial DNA (mtDNA) control region plus steady diagnostic random amplified polymorphic DNA loci. There is no detailed historical record of the introduction of Cichla species into the Upper Parana´River basin, where they became invasive and a potential threat t… Show more

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Cited by 44 publications
(59 citation statements)
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“…The low variability presented by tucunaré populations are surprisingly similar to the results obtained by Oliveira et al (2006) in other Cichla species from Parana River. Indeed, it should be expected low genetic variability in populations living in hydrographic basins other than the Amazon, since this genus is endemic to this basin.…”
Section: Discussionsupporting
confidence: 75%
“…The low variability presented by tucunaré populations are surprisingly similar to the results obtained by Oliveira et al (2006) in other Cichla species from Parana River. Indeed, it should be expected low genetic variability in populations living in hydrographic basins other than the Amazon, since this genus is endemic to this basin.…”
Section: Discussionsupporting
confidence: 75%
“…Análises genéticas de populações de Tucunaré nas áreas invadidas na planície de inundação do alto rio Paraná, entretanto, confirmaram a hipótese de múltiplas introduções de espécimes das diferentes regiões em diferentes pontos da bacia (BRIÑEZ et al, 2013;OLIVEIRA et al, 2006).…”
Section: Desenvolvimentounclassified
“…É esperada também a possível hibridação entre outras espécies de Cichla com C. monoculus, que no entanto não foram encontradas (TEIXEIRA; OLIVEIRA, 2005). Na bacia do rio Paraná, Oliveira et al (2006) investigaram a diversidade genética de populações de C. monoculus e Cichla sp., depois confirmadas como C. kelberi e C. piquiti respectivamente por Kullander e Ferreira (2006), e demonstraram um padrão de diferenciação genética com indivíduos geneticamente intermediários entre as duas espé-cies indicando uma forte evidência da quebra do isolamento reprodutivo destas duas espécies, e deste modo resultando no híbrido. Embora na sub-bacia do Tocantins Araguaia as duas espécies estudadas sejam nativas e coexistam, não existem relatos deste fenômeno.…”
Section: A Hibridação Entre Espécies Do Gênerounclassified
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