O g?nero Hypnea J.V. Lamouroux (Gigartinales, Rhodophyta) no Litoral do Estado da Bahia, Brasil: aspectos morfol?gicos e anat?micos
Ano de defesa: | 2012 |
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Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Estadual de Feira de Santana
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Programa de Pós-Graduação: |
Mestrado Acad?mico em Bot?nica
|
Departamento: |
DEPARTAMENTO DE CI?NCIAS BIOL?GICAS
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://tede2.uefs.br:8080/handle/tede/1056 |
Resumo: | There are currently reported in the literature 67 valid species of Hypnea (Guiry & Guiry 2012) which are widely distributed in tropical and subtropical seas. Wynne (2011) recognizes to the America's tropical and subtropical coast nine species of Hypnea: H. cenomyce J. Agardh, H. cervicornis J. Agardh, H. cornuta (K?tzing) J. Agardh, H. krugiana Hauck, H. musciformis, H. nigrescens Grev. ex J. Agardh, H. spinella (C. Agardh) K?tz, H. valentiae (Turner) Mont. and H. volubilis Searles. Only H. krugiana was not cited for Brazil. Although some species of Hypnea are included in almost all Brazil's regional floras, detailed and updated taxonomic studies lack for most of them. There aren?t accurate analyses of the morphological and anatomical characters commonly used for the delimitation of these species resulting in numerous misidentifications in the Brazilian coast. The state of Bahia has the longest coastline among the states of Brazil, with 1.103 km long, and the occurrence of a representative number of species has been found there in relation to Brazilian and American coast. This number can be even greater as none of these studies had directed collections for this genus. Thus, considering the economic importance of the genus, the great extent of the coast of Bahia, the lack of specific literature and the current difficulty in identifying the species, a more detailed study of morphological and anatomical, vegetative and reproductive features used in taxonomy Hypnea is necessary. This work?s general aim is to develop taxonomic studies on species of Hypnea for the coast of Bahia, Brazil, based on morphological and anatomical characters. The specific aims are: to establish criteria for better taxonomic delimitation of species through the selection of consistent characteristics that contribute to the taxonomy of this genus; to understand the pattern of geographical distribution of species of Hypnea on the coast of Bahia, and to contribute to the knowledge of diversity of the marine benthic flora of the coast of Bahia, and consequently of the Brazilian coast. The genus Hypnea has a wide morphological variation among individuals of the same species, what can be influenced by environmental factors that occur in specific habitats. Furthermore, different circumscriptions have caused taxonomic confusion. Through the analysis of morphological and anatomical characters were recognized and illustrated eight species: H. cenomyce, H. cervicornis, H. cornuta, H. musciformis, H. nigrescens, H. Spinella, H. valentiae and Hypnea sp. For each species are given information and detailed taxonomic description, taxonomic comments and geographic distribution along the coast of Bahia and Brazil. A dichotomous key and a comparative table are also presented. Hypnea cornuta is reported for the first time to the coast of Bahia and this is the first valid citation of this species for northeastern Brazil. Hypnea platyclada Jesus et Nunes is described as a new species to science based on detailed morphological and anatomical observations. The morphological and anatomical characteristics that contributed to the delimitation of taxa were: type of apex; attachment to the substrate; type of insertion of the lateral branches on the axes; arrangement of the branches and branchlets in the axes; size and shape of periaxial cells, arrangement of tetrasporangia and spermatia in fertile branchlets. With this study, the coast of the state of Bahia becomes the most representative of Brazil in number of species of the genus Hypnea. |
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Nunes, Jos? Marcos de Castro02322281590http://lattes.cnpq.br/0415791344839378Jesus, Priscila Barreto de2020-04-25T00:13:30Z2012-03-20JESUS, Priscila Barreto de. O g?nero Hypnea J.V. Lamouroux (Gigartinales, Rhodophyta) no Litoral do Estado da Bahia, Brasil: aspectos morfol?gicos e anat?micos. 2012. 185 f. Disserta??o (Mestrado Acad?mico em Bot?nica)- Universidade Estadual de Feira de Santana, Feira de Santana, 2012.http://tede2.uefs.br:8080/handle/tede/1056There are currently reported in the literature 67 valid species of Hypnea (Guiry & Guiry 2012) which are widely distributed in tropical and subtropical seas. Wynne (2011) recognizes to the America's tropical and subtropical coast nine species of Hypnea: H. cenomyce J. Agardh, H. cervicornis J. Agardh, H. cornuta (K?tzing) J. Agardh, H. krugiana Hauck, H. musciformis, H. nigrescens Grev. ex J. Agardh, H. spinella (C. Agardh) K?tz, H. valentiae (Turner) Mont. and H. volubilis Searles. Only H. krugiana was not cited for Brazil. Although some species of Hypnea are included in almost all Brazil's regional floras, detailed and updated taxonomic studies lack for most of them. There aren?t accurate analyses of the morphological and anatomical characters commonly used for the delimitation of these species resulting in numerous misidentifications in the Brazilian coast. The state of Bahia has the longest coastline among the states of Brazil, with 1.103 km long, and the occurrence of a representative number of species has been found there in relation to Brazilian and American coast. This number can be even greater as none of these studies had directed collections for this genus. Thus, considering the economic importance of the genus, the great extent of the coast of Bahia, the lack of specific literature and the current difficulty in identifying the species, a more detailed study of morphological and anatomical, vegetative and reproductive features used in taxonomy Hypnea is necessary. This work?s general aim is to develop taxonomic studies on species of Hypnea for the coast of Bahia, Brazil, based on morphological and anatomical characters. The specific aims are: to establish criteria for better taxonomic delimitation of species through the selection of consistent characteristics that contribute to the taxonomy of this genus; to understand the pattern of geographical distribution of species of Hypnea on the coast of Bahia, and to contribute to the knowledge of diversity of the marine benthic flora of the coast of Bahia, and consequently of the Brazilian coast. The genus Hypnea has a wide morphological variation among individuals of the same species, what can be influenced by environmental factors that occur in specific habitats. Furthermore, different circumscriptions have caused taxonomic confusion. Through the analysis of morphological and anatomical characters were recognized and illustrated eight species: H. cenomyce, H. cervicornis, H. cornuta, H. musciformis, H. nigrescens, H. Spinella, H. valentiae and Hypnea sp. For each species are given information and detailed taxonomic description, taxonomic comments and geographic distribution along the coast of Bahia and Brazil. A dichotomous key and a comparative table are also presented. Hypnea cornuta is reported for the first time to the coast of Bahia and this is the first valid citation of this species for northeastern Brazil. Hypnea platyclada Jesus et Nunes is described as a new species to science based on detailed morphological and anatomical observations. The morphological and anatomical characteristics that contributed to the delimitation of taxa were: type of apex; attachment to the substrate; type of insertion of the lateral branches on the axes; arrangement of the branches and branchlets in the axes; size and shape of periaxial cells, arrangement of tetrasporangia and spermatia in fertile branchlets. With this study, the coast of the state of Bahia becomes the most representative of Brazil in number of species of the genus Hypnea.Atualmente s?o referidas na literatura 67 esp?cies v?lidas de Hypnea (Guiry & Guiry 2012) que est?o amplamente distribu?das nos mares tropicais e subtropicais. Wynne (2011) reconhece para a costa tropical e subtropical da Am?rica nove esp?cies de Hypnea: H. cenomyce J. Agardh, H. cervicornis J. Agardh, H. cornuta (K?tzing) J. Agardh, H. krugiana Hauck, H. musciformis, H. nigrescens Grev. ex J. Agardh, H. spinella (C. Agardh) K?tz, H. valentiae (Turner) Mont. e H. volubilis Searles. Destas, apenas H. krugiana n?o foi citada para o Brasil. Embora algumas esp?cies de Hypnea estejam inclu?das em praticamente todas as floras regionais do Brasil, faltam estudos taxon?micos detalhados e atualizados para a maioria delas. N?o existem an?lises acuradas dos caracteres morfol?gicos e anat?micos comumente utilizados para a delimita??o destas esp?cies o que resulta em in?meras identifica??es err?neas no litoral brasileiro. A Bahia possui o maior litoral dentre os estados do Brasil, com 1.103 km de extens?o, e j? foi constatada a ocorr?ncia de um n?mero representativo de esp?cies em rela??o ao encontrado no litoral brasileiro e americano, sendo poss?vel que este n?mero seja ainda maior, dado que nenhum destes estudos contou com coletas direcionadas para o g?nero. Assim, considerando a import?ncia econ?mica do g?nero, a grande extens?o do litoral baiano, a falta de literatura espec?fica atualizada e a dificuldade na identifica??o das esp?cies, faz-se necess?rio um estudo mais detalhado das caracter?sticas morfol?gicas e anat?micas, vegetativas e reprodutivas utilizadas na taxonomia de Hypnea. Assim, este trabalho tem como objetivo geral realizar estudos taxon?micos nas esp?cies de Hypnea para o litoral da Bahia, Brasil, baseados em caracteres morfol?gicos e anat?micos. Os objetivos espec?ficos s?o: estabelecer crit?rios taxon?micos para melhor delimita??o das esp?cies estudadas, atrav?s da sele??o de caracter?sticas consistentes que contribuam para a taxonomia deste g?nero; compreender o padr?o de distribui??o geogr?fica das esp?cies de Hypnea no litoral baiano e, contribuir para o conhecimento da diversidade da flora marinha bent?nica do litoral baiano e, conseq?entemente do litoral brasileiro. O g?nero Hypnea apresenta ampla varia??o morfol?gica entre os indiv?duos de uma mesma esp?cie, o que pode ser influenciado por fatores ambientais que ocorrem em habitats espec?ficos. Al?m disso, diferentes circunscri??es t?m causado confus?o taxon?mica. Atrav?s da an?lise de caracteres morfo-anat?micos foram reconhecidas e ilustradas oito esp?cies: H. cenomyce, H. cervicornis, H. cornuta, H. musciformis, H. nigrescens, H. spinella, H. valentiae e Hypnea sp. Para cada uma delas s?o apresentadas informa??es e refer?ncias taxon?micas detalhadas, descri??o, coment?rios taxon?micos e distribui??o geogr?fica ao longo do litoral baiano e brasileiro. Uma chave dicot?mica e uma tabela comparativa tamb?m s?o apresentadas. Hypnea cornuta ? referida pela primeira vez para o litoral do estado da Bahia sendo esta, a primeira cita??o v?lida desta esp?cie para o nordeste brasileiro. Hypnea platyclada Jesus et Nunes ? descrita como uma nova esp?cie para a ci?ncia baseada em observa??es morfol?gicas e anat?micas minuciosas. As caracter?sticas morfol?gicas e anat?micas que contribu?ram na delimita??o dos t?xons foram: tipo de ?pice, modo de fixa??o ao substrato, tipo de inser??o dos ramos laterais nos eixos, disposi??o dos r?mulos nos ramos e eixos, tamanho e forma das c?lulas periaxiais e disposi??o dos tetraspor?ngios e espermat?ngios nos r?mulos f?rteis. Com este estudo, o litoral do estado da Bahia passa a ser o mais representativo do Brasil em n?mero de esp?cies pertencentes ao g?nero Hypnea.Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2020-04-25T00:13:30Z No. of bitstreams: 1 Disserta??o_Priscila Barreto.pdf: 18646187 bytes, checksum: 34cf1e72e57d1540f307684f722cdc43 (MD5)Made available in DSpace on 2020-04-25T00:13:30Z (GMT). No. of bitstreams: 1 Disserta??o_Priscila Barreto.pdf: 18646187 bytes, checksum: 34cf1e72e57d1540f307684f722cdc43 (MD5) Previous issue date: 2012-03-20Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPESapplication/pdfporUniversidade Estadual de Feira de SantanaMestrado Acad?mico em Bot?nicaUEFSBrasilDEPARTAMENTO DE CI?NCIAS BIOL?GICASTaxonomiaCystocloniaceaeBahiaHypneaTaxonomyTAXONOMIA VEGETAL::TAXONOMIA DE CRIPTOGAMOSBOTANICA::TAXONOMIA VEGETALO g?nero Hypnea J.V. Lamouroux (Gigartinales, Rhodophyta) no Litoral do Estado da Bahia, Brasil: aspectos morfol?gicos e anat?micosinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis18799762864545920486006006006006005026123383450589282-902586626248091396814755406563224005113590462550136975366info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UEFSinstname:Universidade Estadual de Feira de Santana (UEFS)instacron:UEFSORIGINALDisserta??o_Priscila Barreto.pdfDisserta??o_Priscila Barreto.pdfapplication/pdf18646187http://tede2.uefs.br:8080/bitstream/tede/1056/2/Disserta%C3%A7%C3%A3o_Priscila+Barreto.pdf34cf1e72e57d1540f307684f722cdc43MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-82089http://tede2.uefs.br:8080/bitstream/tede/1056/1/license.txt7b5ba3d2445355f386edab96125d42b7MD51tede/10562020-04-24 21:13:30.405oai:tede2.uefs.br:8080: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Biblioteca Digital de Teses e Dissertaçõeshttp://tede2.uefs.br:8080/PUBhttp://tede2.uefs.br:8080/oai/requestbcuefs@uefs.br|| bcref@uefs.br||bcuefs@uefs.bropendoar:2020-04-25T00:13:30Biblioteca Digital de Teses e Dissertações da UEFS - Universidade Estadual de Feira de Santana (UEFS)false |
dc.title.por.fl_str_mv |
O g?nero Hypnea J.V. Lamouroux (Gigartinales, Rhodophyta) no Litoral do Estado da Bahia, Brasil: aspectos morfol?gicos e anat?micos |
title |
O g?nero Hypnea J.V. Lamouroux (Gigartinales, Rhodophyta) no Litoral do Estado da Bahia, Brasil: aspectos morfol?gicos e anat?micos |
spellingShingle |
O g?nero Hypnea J.V. Lamouroux (Gigartinales, Rhodophyta) no Litoral do Estado da Bahia, Brasil: aspectos morfol?gicos e anat?micos Jesus, Priscila Barreto de Taxonomia Cystocloniaceae Bahia Hypnea Taxonomy TAXONOMIA VEGETAL::TAXONOMIA DE CRIPTOGAMOS BOTANICA::TAXONOMIA VEGETAL |
title_short |
O g?nero Hypnea J.V. Lamouroux (Gigartinales, Rhodophyta) no Litoral do Estado da Bahia, Brasil: aspectos morfol?gicos e anat?micos |
title_full |
O g?nero Hypnea J.V. Lamouroux (Gigartinales, Rhodophyta) no Litoral do Estado da Bahia, Brasil: aspectos morfol?gicos e anat?micos |
title_fullStr |
O g?nero Hypnea J.V. Lamouroux (Gigartinales, Rhodophyta) no Litoral do Estado da Bahia, Brasil: aspectos morfol?gicos e anat?micos |
title_full_unstemmed |
O g?nero Hypnea J.V. Lamouroux (Gigartinales, Rhodophyta) no Litoral do Estado da Bahia, Brasil: aspectos morfol?gicos e anat?micos |
title_sort |
O g?nero Hypnea J.V. Lamouroux (Gigartinales, Rhodophyta) no Litoral do Estado da Bahia, Brasil: aspectos morfol?gicos e anat?micos |
author |
Jesus, Priscila Barreto de |
author_facet |
Jesus, Priscila Barreto de |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Nunes, Jos? Marcos de Castro |
dc.contributor.authorID.fl_str_mv |
02322281590 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/0415791344839378 |
dc.contributor.author.fl_str_mv |
Jesus, Priscila Barreto de |
contributor_str_mv |
Nunes, Jos? Marcos de Castro |
dc.subject.por.fl_str_mv |
Taxonomia Cystocloniaceae Bahia Hypnea |
topic |
Taxonomia Cystocloniaceae Bahia Hypnea Taxonomy TAXONOMIA VEGETAL::TAXONOMIA DE CRIPTOGAMOS BOTANICA::TAXONOMIA VEGETAL |
dc.subject.eng.fl_str_mv |
Taxonomy |
dc.subject.cnpq.fl_str_mv |
TAXONOMIA VEGETAL::TAXONOMIA DE CRIPTOGAMOS BOTANICA::TAXONOMIA VEGETAL |
description |
There are currently reported in the literature 67 valid species of Hypnea (Guiry & Guiry 2012) which are widely distributed in tropical and subtropical seas. Wynne (2011) recognizes to the America's tropical and subtropical coast nine species of Hypnea: H. cenomyce J. Agardh, H. cervicornis J. Agardh, H. cornuta (K?tzing) J. Agardh, H. krugiana Hauck, H. musciformis, H. nigrescens Grev. ex J. Agardh, H. spinella (C. Agardh) K?tz, H. valentiae (Turner) Mont. and H. volubilis Searles. Only H. krugiana was not cited for Brazil. Although some species of Hypnea are included in almost all Brazil's regional floras, detailed and updated taxonomic studies lack for most of them. There aren?t accurate analyses of the morphological and anatomical characters commonly used for the delimitation of these species resulting in numerous misidentifications in the Brazilian coast. The state of Bahia has the longest coastline among the states of Brazil, with 1.103 km long, and the occurrence of a representative number of species has been found there in relation to Brazilian and American coast. This number can be even greater as none of these studies had directed collections for this genus. Thus, considering the economic importance of the genus, the great extent of the coast of Bahia, the lack of specific literature and the current difficulty in identifying the species, a more detailed study of morphological and anatomical, vegetative and reproductive features used in taxonomy Hypnea is necessary. This work?s general aim is to develop taxonomic studies on species of Hypnea for the coast of Bahia, Brazil, based on morphological and anatomical characters. The specific aims are: to establish criteria for better taxonomic delimitation of species through the selection of consistent characteristics that contribute to the taxonomy of this genus; to understand the pattern of geographical distribution of species of Hypnea on the coast of Bahia, and to contribute to the knowledge of diversity of the marine benthic flora of the coast of Bahia, and consequently of the Brazilian coast. The genus Hypnea has a wide morphological variation among individuals of the same species, what can be influenced by environmental factors that occur in specific habitats. Furthermore, different circumscriptions have caused taxonomic confusion. Through the analysis of morphological and anatomical characters were recognized and illustrated eight species: H. cenomyce, H. cervicornis, H. cornuta, H. musciformis, H. nigrescens, H. Spinella, H. valentiae and Hypnea sp. For each species are given information and detailed taxonomic description, taxonomic comments and geographic distribution along the coast of Bahia and Brazil. A dichotomous key and a comparative table are also presented. Hypnea cornuta is reported for the first time to the coast of Bahia and this is the first valid citation of this species for northeastern Brazil. Hypnea platyclada Jesus et Nunes is described as a new species to science based on detailed morphological and anatomical observations. The morphological and anatomical characteristics that contributed to the delimitation of taxa were: type of apex; attachment to the substrate; type of insertion of the lateral branches on the axes; arrangement of the branches and branchlets in the axes; size and shape of periaxial cells, arrangement of tetrasporangia and spermatia in fertile branchlets. With this study, the coast of the state of Bahia becomes the most representative of Brazil in number of species of the genus Hypnea. |
publishDate |
2012 |
dc.date.issued.fl_str_mv |
2012-03-20 |
dc.date.accessioned.fl_str_mv |
2020-04-25T00:13:30Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
JESUS, Priscila Barreto de. O g?nero Hypnea J.V. Lamouroux (Gigartinales, Rhodophyta) no Litoral do Estado da Bahia, Brasil: aspectos morfol?gicos e anat?micos. 2012. 185 f. Disserta??o (Mestrado Acad?mico em Bot?nica)- Universidade Estadual de Feira de Santana, Feira de Santana, 2012. |
dc.identifier.uri.fl_str_mv |
http://tede2.uefs.br:8080/handle/tede/1056 |
identifier_str_mv |
JESUS, Priscila Barreto de. O g?nero Hypnea J.V. Lamouroux (Gigartinales, Rhodophyta) no Litoral do Estado da Bahia, Brasil: aspectos morfol?gicos e anat?micos. 2012. 185 f. Disserta??o (Mestrado Acad?mico em Bot?nica)- Universidade Estadual de Feira de Santana, Feira de Santana, 2012. |
url |
http://tede2.uefs.br:8080/handle/tede/1056 |
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por |
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por |
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600 600 600 600 600 |
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-9025866262480913968 1475540656322400511 |
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3590462550136975366 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual de Feira de Santana |
dc.publisher.program.fl_str_mv |
Mestrado Acad?mico em Bot?nica |
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UEFS |
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Brasil |
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DEPARTAMENTO DE CI?NCIAS BIOL?GICAS |
publisher.none.fl_str_mv |
Universidade Estadual de Feira de Santana |
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reponame:Biblioteca Digital de Teses e Dissertações da UEFS instname:Universidade Estadual de Feira de Santana (UEFS) instacron:UEFS |
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Universidade Estadual de Feira de Santana (UEFS) |
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UEFS |
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UEFS |
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Biblioteca Digital de Teses e Dissertações da UEFS |
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Biblioteca Digital de Teses e Dissertações da UEFS |
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http://tede2.uefs.br:8080/bitstream/tede/1056/2/Disserta%C3%A7%C3%A3o_Priscila+Barreto.pdf http://tede2.uefs.br:8080/bitstream/tede/1056/1/license.txt |
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Biblioteca Digital de Teses e Dissertações da UEFS - Universidade Estadual de Feira de Santana (UEFS) |
repository.mail.fl_str_mv |
bcuefs@uefs.br|| bcref@uefs.br||bcuefs@uefs.br |
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