The Effects of Habitat Loss on Genetic Diversity and Population Structure of Cedrela fissilis Vell.
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , , |
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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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) |
repository.mail.fl_str_mv |
|
_version_ |
1808128749527367680 |