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Genetic diversification in Bokermannohyla ibitiguara populations (Anura, Hylidae) from preserved and fragmented areas of the Brazilian Cerrado

Grant number: 14/04394-6
Support type:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): June 05, 2014
Effective date (End): December 04, 2014
Field of knowledge:Biological Sciences - Genetics
Principal Investigator:Cynthia Peralta de Almeida Prado
Grantee:Renato Christensen Nali
Supervisor abroad: Kelly R. Zamudio
Home Institution: Instituto de Biociências (IB). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil
Local de pesquisa : Cornell University, United States  
Associated to the scholarship:12/06228-0 - Genetic, morphological and acoustic diversification in populations of an anuran endemic to the Serra da Canastra, Brazil, BP.DR

Abstract

Landscape genetics - the combination of population genetics and landscape ecology - is an emergent field of study that focuses on the patterns and processes leading to population genetic differentiation throughout a species' geographical distribution. This project aims to study the genetic diversification in populations of Bokermannohyla ibitiguara, a stream-dwelling treefrog endemic to the threatened Brazilian Cerrado, state of Minas Gerais, Brazil. Using 22 microsatellite markers already developed and optimized for this species, individuals will be genotyped to (1) verify the genetic structure of B. ibitiguara populations along the Serra da Canastra mountain range, state of Minas Gerais, Brazil, where this species is abundant; (2) test whether genetic structure is associated with geographical distance between populations; and (3) compare genetic structure and variability among populations that occur in preserved vs. fragmented areas. Tissue samples were collected from 13 streams from various municipalities of Minas Gerais state (fragmented areas) and the Parque Nacional da Serra da Canastra (preserved areas). Molecular tools and analyses will include estimation of F-statistic values, measures of genetic diversity, Mantel tests and Bayesian analysis of population structure. Very few studies have investigated the processes leading to genetic differentiation in frogs from open formations in the Neotropics; thus, this project will contribute greatly to the understanding of the historical processes leading to diversification in the Cerrado and the genetic consequences of landscape fragmentation. (AU)