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      Genetic variability of brycon orbignyanus (valenciennes, 1850) (characiformes: characidae) in cultivated and natural populations of the upper paraná river, and implications for the conservation of the species

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          Abstract

          This study aimed to evaluate the genetic variability of B. orbignyanus in cultivated and natural populations of the Upper Paraná River, using molecular RAPD markers and mtDNA control region. Specimens were collected in the Paraná River and in the Piracema fish farm in Maringá, State of Paraná, Brazil. RAPD primers produced 82 loci with consistent expression. The population from the Paraná River showed 28 polymorphic loci, whereas the population from the fish farm presented only 12. Data revealed genetic differentiation between the two populations, although not very pronounced. These results were corroborated by the principal coordinate analysis and by neighbor-joining clustering. The alignment of the D-loop sequences of B. orbignyanus indicated the existence of polymorphism only in the natural population. These data could be helpful for the formulation of management strategies and conservation of the genetic diversity of the species.

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          Most cited references40

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          Evolution and the Genetics of Populations 4. Variability Within and Among Natural Populations

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            Have fishes had their chips? The dilemma of threatened fishes

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              Estudos ecológicos de comunidades de peixes tropicais

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                babt
                Brazilian Archives of Biology and Technology
                Braz. arch. biol. technol.
                Instituto de Tecnologia do Paraná - Tecpar (Curitiba )
                1678-4324
                August 2011
                : 54
                : 4
                : 839-848
                Affiliations
                [1 ] Universidade Estadual de Maringá Brazil
                [2 ] Universidade Estadual de Maringá Brazil
                [3 ] Universidade Federal de São João del-Rei Brazil
                Article
                S1516-89132011000400025
                10.1590/S1516-89132011000400025
                e05623ac-5bfd-488b-bc20-9b97062f9ca0

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1516-8913&lng=en
                Categories
                BIOLOGY

                General life sciences
                freshwater fish,endangered,RAPD,mtDNA,polymorphism
                General life sciences
                freshwater fish, endangered, RAPD, mtDNA, polymorphism

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