The Effects of Habitat Loss on Genetic Diversity and Population Structure of Cedrela fissilis Vell.

Detalhes bibliográficos
Autor(a) principal: Gandara, Flávio Bertin
Data de Publicação: 2019
Outros Autores: Da-Silva, Paulo Roberto, de Moura, Tânia Maria, Pereira, Fernanda Bortolanza [UNESP], Gobatto, Cláudia Regina, Ferraz, Elza M., Kageyama, Paulo Y., Tambarussi, Evandro Vagner [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1007/s12042-019-09234-2
http://hdl.handle.net/11449/187747
Resumo: Cedrela fissilis Vell. has a wide distribution in South and Central America, and in neotropical forests the species occurs at a low density. Its wood is one of the most valued around the world, and the species is currently at risk of extinction due to both habitat fragmentation and illegal logging. Considering the need for conservation strategies, this study aims to investigate the genetic structure, diversity, and inbreeding in C. fissilis populations from the Atlantic Forest. To do this, nine microsatellite loci were used to genotype 289 individuals from eight undisturbed and disturbed fragments. Two of the eight populations harbor most of the genetic diversity: one includes most of the diversity present in all populations and the other is isolated but with high levels of diversity. Genetic diversity was higher within than among populations, with observed and expected heterozygosities ranging from 0.48 to 0.63 and from 0.55 to 0.70, respectively. We detected a significant fixation index, ranging from 0.08 to 0.24 and 32% of the observed alleles were exclusive of some population. The populations showed moderate genetic structure (FST = 0.10) and the Bayesian analysis grouped the studied individuals into three distinct genetic clusters that seem to be related to the presence of geographical barriers. The overall analyses of the results allow us to conclude that protecting only isolated fragments, either large or small, may be ineffective for conserving the C. fissilis gene pool in the studied region. This observation suggests that an appropriate strategy to conserve the gene pool of the species is to maintain both the Atlantic Forest green belt in the eastern portion of the Central and South region of this biome, where the forest is not highly fragmented, as well as the remaining forest areas to the west of the Paraná River.
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spelling The Effects of Habitat Loss on Genetic Diversity and Population Structure of Cedrela fissilis Vell.ConservationFragmentationMeliaceaeTree speciesCedrela fissilis Vell. has a wide distribution in South and Central America, and in neotropical forests the species occurs at a low density. Its wood is one of the most valued around the world, and the species is currently at risk of extinction due to both habitat fragmentation and illegal logging. Considering the need for conservation strategies, this study aims to investigate the genetic structure, diversity, and inbreeding in C. fissilis populations from the Atlantic Forest. To do this, nine microsatellite loci were used to genotype 289 individuals from eight undisturbed and disturbed fragments. Two of the eight populations harbor most of the genetic diversity: one includes most of the diversity present in all populations and the other is isolated but with high levels of diversity. Genetic diversity was higher within than among populations, with observed and expected heterozygosities ranging from 0.48 to 0.63 and from 0.55 to 0.70, respectively. We detected a significant fixation index, ranging from 0.08 to 0.24 and 32% of the observed alleles were exclusive of some population. The populations showed moderate genetic structure (FST = 0.10) and the Bayesian analysis grouped the studied individuals into three distinct genetic clusters that seem to be related to the presence of geographical barriers. The overall analyses of the results allow us to conclude that protecting only isolated fragments, either large or small, may be ineffective for conserving the C. fissilis gene pool in the studied region. This observation suggests that an appropriate strategy to conserve the gene pool of the species is to maintain both the Atlantic Forest green belt in the eastern portion of the Central and South region of this biome, where the forest is not highly fragmented, as well as the remaining forest areas to the west of the Paraná River.Luiz de Queiroz College of Agriculture (ESALQ/USP) University of São Paulo, Pádua Dias Av. n. 11Plant Genetics and Molecular Biology Laboratory Midwestern State University (UNICENTRO) Biological Science Department, Rua Simeão Varela de Sá, 03, Vila CarliMissouri Botanical Garden, P.O. Box 299Forest Science Graduate Program São Paulo State University (UNESP) School of Agriculture, Av. Universitária, n. 3780, Altos do ParaísoGenetics and Forest Tree Breeding Laboratory Midwestern State University (UNICENTRO) Department of Forestry Engineering, PR 153- Km 7, RiozinhoForest Science Graduate Program São Paulo State University (UNESP) School of Agriculture, Av. Universitária, n. 3780, Altos do ParaísoUniversidade de São Paulo (USP)Biological Science DepartmentMissouri Botanical GardenUniversidade Estadual Paulista (Unesp)Midwestern State University (UNICENTRO)Gandara, Flávio BertinDa-Silva, Paulo Robertode Moura, Tânia MariaPereira, Fernanda Bortolanza [UNESP]Gobatto, Cláudia ReginaFerraz, Elza M.Kageyama, Paulo Y.Tambarussi, Evandro Vagner [UNESP]2019-10-06T15:46:00Z2019-10-06T15:46:00Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1007/s12042-019-09234-2Tropical Plant Biology.1935-97641935-9756http://hdl.handle.net/11449/18774710.1007/s12042-019-09234-22-s2.0-85067310330Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengTropical Plant Biologyinfo:eu-repo/semantics/openAccess2021-10-23T15:01:05Zoai:repositorio.unesp.br:11449/187747Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:03:51.809736Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv The Effects of Habitat Loss on Genetic Diversity and Population Structure of Cedrela fissilis Vell.
title The Effects of Habitat Loss on Genetic Diversity and Population Structure of Cedrela fissilis Vell.
spellingShingle The Effects of Habitat Loss on Genetic Diversity and Population Structure of Cedrela fissilis Vell.
Gandara, Flávio Bertin
Conservation
Fragmentation
Meliaceae
Tree species
title_short The Effects of Habitat Loss on Genetic Diversity and Population Structure of Cedrela fissilis Vell.
title_full The Effects of Habitat Loss on Genetic Diversity and Population Structure of Cedrela fissilis Vell.
title_fullStr The Effects of Habitat Loss on Genetic Diversity and Population Structure of Cedrela fissilis Vell.
title_full_unstemmed The Effects of Habitat Loss on Genetic Diversity and Population Structure of Cedrela fissilis Vell.
title_sort The Effects of Habitat Loss on Genetic Diversity and Population Structure of Cedrela fissilis Vell.
author Gandara, Flávio Bertin
author_facet Gandara, Flávio Bertin
Da-Silva, Paulo Roberto
de Moura, Tânia Maria
Pereira, Fernanda Bortolanza [UNESP]
Gobatto, Cláudia Regina
Ferraz, Elza M.
Kageyama, Paulo Y.
Tambarussi, Evandro Vagner [UNESP]
author_role author
author2 Da-Silva, Paulo Roberto
de Moura, Tânia Maria
Pereira, Fernanda Bortolanza [UNESP]
Gobatto, Cláudia Regina
Ferraz, Elza M.
Kageyama, Paulo Y.
Tambarussi, Evandro Vagner [UNESP]
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade de São Paulo (USP)
Biological Science Department
Missouri Botanical Garden
Universidade Estadual Paulista (Unesp)
Midwestern State University (UNICENTRO)
dc.contributor.author.fl_str_mv Gandara, Flávio Bertin
Da-Silva, Paulo Roberto
de Moura, Tânia Maria
Pereira, Fernanda Bortolanza [UNESP]
Gobatto, Cláudia Regina
Ferraz, Elza M.
Kageyama, Paulo Y.
Tambarussi, Evandro Vagner [UNESP]
dc.subject.por.fl_str_mv Conservation
Fragmentation
Meliaceae
Tree species
topic Conservation
Fragmentation
Meliaceae
Tree species
description Cedrela fissilis Vell. has a wide distribution in South and Central America, and in neotropical forests the species occurs at a low density. Its wood is one of the most valued around the world, and the species is currently at risk of extinction due to both habitat fragmentation and illegal logging. Considering the need for conservation strategies, this study aims to investigate the genetic structure, diversity, and inbreeding in C. fissilis populations from the Atlantic Forest. To do this, nine microsatellite loci were used to genotype 289 individuals from eight undisturbed and disturbed fragments. Two of the eight populations harbor most of the genetic diversity: one includes most of the diversity present in all populations and the other is isolated but with high levels of diversity. Genetic diversity was higher within than among populations, with observed and expected heterozygosities ranging from 0.48 to 0.63 and from 0.55 to 0.70, respectively. We detected a significant fixation index, ranging from 0.08 to 0.24 and 32% of the observed alleles were exclusive of some population. The populations showed moderate genetic structure (FST = 0.10) and the Bayesian analysis grouped the studied individuals into three distinct genetic clusters that seem to be related to the presence of geographical barriers. The overall analyses of the results allow us to conclude that protecting only isolated fragments, either large or small, may be ineffective for conserving the C. fissilis gene pool in the studied region. This observation suggests that an appropriate strategy to conserve the gene pool of the species is to maintain both the Atlantic Forest green belt in the eastern portion of the Central and South region of this biome, where the forest is not highly fragmented, as well as the remaining forest areas to the west of the Paraná River.
publishDate 2019
dc.date.none.fl_str_mv 2019-10-06T15:46:00Z
2019-10-06T15:46:00Z
2019-01-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1007/s12042-019-09234-2
Tropical Plant Biology.
1935-9764
1935-9756
http://hdl.handle.net/11449/187747
10.1007/s12042-019-09234-2
2-s2.0-85067310330
url http://dx.doi.org/10.1007/s12042-019-09234-2
http://hdl.handle.net/11449/187747
identifier_str_mv Tropical Plant Biology.
1935-9764
1935-9756
10.1007/s12042-019-09234-2
2-s2.0-85067310330
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Tropical Plant Biology
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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