Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/354002
Type: Artigo
Title: Genetic structure of Bertholletia excelsa populations from the Amazon at different spatial scales
Author: Sujii, Patricia Sanae
Martins, Karina
Wadt, Lucia Helena de Oliveira
Azevedo, Vânia Cristina Rennó
Solferini, Vera Nisaka
Abstract: Population genetic structure and genetic diversity levels are important issues to understand population dynamics and to guide forest management plans. The Brazil nut tree (Bertholletia excelsa Bonpl.) is an endemic species, widely distributed through Amazonian upland forests and also an important species for the local extractive economy. Our aim was to analyze the genetic structure of Brazil nut trees at both fine and large scales throughout the Amazon Basin, contributing to the knowledge base on this species and to generate information to support plans for its conservation. We genotyped individuals from nine sites distributed in five regions of the Brazilian Amazon using 11 microsatellite loci. We found an excess of heterozygotes in most populations, with significant negative inbreeding coefficients (f) for five of them and the fine-scale structure, when present, was very small. These results, as a consequence of self-incompatibility, indicate that conservation plans for B. excelsa must include the maintenance of genetic diversity within populations to ensure viable amounts of seeds for both economic purposes and for the local persistence of the species.
Subject: Castanha-do-brasil
Estrutura genética
Country: Países Baixos
Editor: Springer
Rights: Fechado
Identifier DOI: 10.1007/s10592-015-0714-4
Address: https://link.springer.com/article/10.1007/s10592-015-0714-4
Date Issue: 2015
Appears in Collections:IB - Artigos e Outros Documentos

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