Genetic Variability of Brycon hilarii in a Repopulation Program
| Autor: | Ruy Alberto Caetano Corrêa Filho, Annaiza Braga Bignardi, Reinaldo Jose Castro, Mariana Srucki Alves, Nelson Mauricio Lopera Barrero, Elenice Souza dos Reis Goes, Jayme Aparecido Povh |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Conservation genetics
Genetic diversity education.field_of_study Multidisciplinary Ecology lcsh:Biotechnology piraputanga Population 0402 animal and dairy science Zoology 04 agricultural and veterinary sciences Broodstock Biology 040201 dairy & animal science microsatellites Genetic divergence Natural population growth conservation genetics lcsh:TP248.13-248.65 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Microsatellite Genetic variability education |
| Zdroj: | Brazilian Archives of Biology and Technology, Volume: 59, Article number: e16160102, Published: 28 JUL 2016 Brazilian Archives of Biology and Technology, Vol 59, Iss 0 Brazilian Archives of Biology and Technology v.59 2016 Brazilian Archives of Biology and Technology Instituto de Tecnologia do Paraná (Tecpar) instacron:TECPAR |
| Popis: | Brycon hilarii, popularly called piraputanga in Brazil, is a species distributed throughout the whole basin of the river Paraguay. In recent years, the species has been on a repopulation program due to its remarkable decline as a wild species in the region. Assessment of the genetic diversity of broodstock and fingerling stocks in repopulation programs is basic to avoid genetic impacts on wild populations. The genetic variability of the wild population and of the broodstock and fingerling stocks of B. hilarii in a repopulation program in the river Itiquira MT Brazil will be determined. Seven microsatellite loci produced 52 polymorphic alleles and heterozygosity revealed rates between 0.5794 and 0.7204. FIS did not register any endogamy in the broodstock but it was present in fingerlings and wild populations. Intra- and inter-specific genetic variability rates were higher within each combination but not between groups. Grouping in fingerling groups had a lower density when compared to the others. There is a higher genetic proximity between the natural population and broodstock (0.0237) when the distance between populations was analyzed, even though the two were greatly distant from the fingerling group (0.2622 - 0.2617). Results show that the wild population and the broodstock had high genetic variability and low genetic divergence; contrastingly, fingerlings showed mild genetic variability and great divergence when compared to other groups, indicating that they were not adequately constituted. |
| Databáze: | OpenAIRE |
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