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Population Genetic Structure of Astyanax scabripinnis (Teleostei, Characidae) from an Urban Stream

Sofia, Silvia H ; Silva, Carlos R.M ; Galindo, Bruno A ; Almeida, Fernanda S ; Sodré, Leda M.K ; Martinez, Cláudia B.R

Hydrobiologia, 2006, Vol.553 (1), p.245-254 [Periódico revisado por pares]

Dordrecht: Kluwer Academic Publishers

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Título:
Population Genetic Structure of Astyanax scabripinnis (Teleostei, Characidae) from an Urban Stream
Autor: Sofia, Silvia H ; Silva, Carlos R.M ; Galindo, Bruno A ; Almeida, Fernanda S ; Sodré, Leda M.K ; Martinez, Cláudia B.R
Assuntos: Agnatha. Pisces ; Animal and plant ecology ; Animal, plant and microbial ecology ; Astyanax scabripinnis ; Biological and medical sciences ; Characidae ; Creeks & streams ; DNA ; fish ; Fundamental and applied biological sciences. Psychology ; gene flow ; General aspects ; genetic distance ; genetic variation ; Genetics ; indigenous species ; loci ; population ; population structure ; random amplified polymorphic DNA technique ; streams ; Synecology ; Teleostei ; tropics ; Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
É parte de: Hydrobiologia, 2006, Vol.553 (1), p.245-254
Notas: http://dx.doi.org/10.1007/s10750-005-1106-4
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Descrição: Despite the great anthropogenic interference on urban streams, information is still scarce about the genetic variability and structure of native fish populations inhabiting such streams. In the present study, random amplified polymorphic DNA (RAPD) markers were used to analyze genetic variability and structure of populations assigned to the Neotropical fish species Astyanax scabripinnis from an urban stream located in Londrina, Paraná State, southern Brazil. Thirty individuals of this species were collected from three sites throughout the upper Cambé stream. A total of 10 primers amplified 159 loci, of which 128 (80.5%) were polymorphic. Each of the three populations showed very similar proportions of polymorphic loci, which ranged from 63.5 to 64.8%. Unbiased genetic distances varied from 0.0612 to 0.0646. Thetaₚ-test values indicated moderate to high genetic differentiation among individuals from different localities. The number of migrants varied from 1.34 to 1.46, suggesting a low gene flow between populations. The genetic similarity among all individuals studied ranged from 0.424 to 0.848. The results suggest that populations of A. scabripinnis in Cambé stream are undergoing genetic differentiation.
Editor: Dordrecht: Kluwer Academic Publishers
Idioma: Inglês

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Population Genetic Structure of Astyanax scabripinnis (Teleostei, Characidae) from an Urban Stream

Sofia, Silvia H ; Silva, Carlos R.M ; Galindo, Bruno A ; Almeida, Fernanda S ; Sodré, Leda M.K ; Martinez, Cláudia B.R

Dordrecht: Kluwer Academic Publishers

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