Citogenética de espécies de Attini (Formicidae: Myrmicinae)

Detalhes bibliográficos
Autor(a) principal: Barros, Luísa Antônia Campos
Data de Publicação: 2010
Tipo de documento: Dissertação
Idioma: por
Título da fonte: LOCUS Repositório Institucional da UFV
Texto Completo: http://locus.ufv.br/handle/123456789/4730
Resumo: The tribe Attini consists of a monophyletic group that includes about 230 species in 14 genera. Different biological substrate are utilized by these ants for cultivation of the symbiotic fungus on which they feed and are necessarily dependent. This tribe includes the leaf-cutting ants (Atta Fabricius and Acromyrmex Mayr) that are known as important agricultural pests. The usage of cytogenetics in the family Formicidae has made significant contributions in the study of more than 750 ant species. Only 10% of Attini’s species have some sort of cytogenetic data available. This work aimed at cytogenetically studying six Acromyrmex species and seven species of the tribe Attini divided into four genera: Apterostigma Mayr, Mycocepurus Forel, Sericomyrmex Mayr and Trachymyrmex Forel. Some of the species were also submitted to banding techniques. The karyotypes observed were: Apterostigma madidiense Weber (n=23, 7m + 10sm + 5st + 1a), Apterostigma steigeri Santschi (2n=22, 20m + 2sm), Mycocepurus goeldii (2n=8, 4m + 4sm), Sericomyrmex sp. (2n=50, 44m + 6 sm; n=25, 22m + 3 sm), Trachymyrmex fuscus Emery (2n=18, 16m + 2sm; n=9, 8m + 1sm), Trachymyrmex relictus Borgmeier (2n=20m, n=10m) and Trachymyrmex sp. (2n=22, 18m + 4sm). A size polymorphism on a short arm of a submetacentric pair from Trachymyrmex fuscus was also pointed out. The possible causes of chromosomal segment duplication were discussed. All studied species of the genus Acromyrmex presented 2n=38. Each species showed a different karyotype in relation to morphology (A. balzani: 12m + 10sm + 14st + 2a; A. coronatus: 12m + 12sm + 12st + 2a; A. disciger: 10m + 12sm + 14st + 2a; A. niger: 12m + 18sm + 6st + 2a; A. rugosus: 16m + 12sm + 8st + 2a; A. echinatior: 8m + 6sm + 14st + 10a), in the distribution of heterocromatin (C banding) and GC rich regions (CMA3). For three species (A. coronatus, A. disciger, A. niger) the first subtelocentric pair was the bearer of ribosomal genes. Acromyrmex species presented stability in the number of chromosome with differences in the karyotype. The results suggest that many chromosomal rearrangements such as translocations, growth of heterochromatin and inversion may have occurred during their differentiation, contributing to the karyotype variability found.
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spelling Barros, Luísa Antônia Camposhttp://lattes.cnpq.br/3102759229194899Souza, Danival José dehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4702164J6Lúcia, Terezinha Maria Castro Dellahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783306E2Pompolo, Silvia das Graçashttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780564A2Costa, Marco Antoniohttp://lattes.cnpq.br/8721647772738636Santos, Jorge Abdala Dergam doshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780131D92015-03-26T13:42:17Z2011-10-262015-03-26T13:42:17Z2010-07-19BARROS, Luísa Antônia Campos. Cytogenetic of Attini species (Formicidae: Myrmicinae). 2010. 88 f. Dissertação (Mestrado em Genética animal; Genética molecular e de microrganismos; Genética quantitativa; Genética vegetal; Me) - Universidade Federal de Viçosa, Viçosa, 2010.http://locus.ufv.br/handle/123456789/4730The tribe Attini consists of a monophyletic group that includes about 230 species in 14 genera. Different biological substrate are utilized by these ants for cultivation of the symbiotic fungus on which they feed and are necessarily dependent. This tribe includes the leaf-cutting ants (Atta Fabricius and Acromyrmex Mayr) that are known as important agricultural pests. The usage of cytogenetics in the family Formicidae has made significant contributions in the study of more than 750 ant species. Only 10% of Attini’s species have some sort of cytogenetic data available. This work aimed at cytogenetically studying six Acromyrmex species and seven species of the tribe Attini divided into four genera: Apterostigma Mayr, Mycocepurus Forel, Sericomyrmex Mayr and Trachymyrmex Forel. Some of the species were also submitted to banding techniques. The karyotypes observed were: Apterostigma madidiense Weber (n=23, 7m + 10sm + 5st + 1a), Apterostigma steigeri Santschi (2n=22, 20m + 2sm), Mycocepurus goeldii (2n=8, 4m + 4sm), Sericomyrmex sp. (2n=50, 44m + 6 sm; n=25, 22m + 3 sm), Trachymyrmex fuscus Emery (2n=18, 16m + 2sm; n=9, 8m + 1sm), Trachymyrmex relictus Borgmeier (2n=20m, n=10m) and Trachymyrmex sp. (2n=22, 18m + 4sm). A size polymorphism on a short arm of a submetacentric pair from Trachymyrmex fuscus was also pointed out. The possible causes of chromosomal segment duplication were discussed. All studied species of the genus Acromyrmex presented 2n=38. Each species showed a different karyotype in relation to morphology (A. balzani: 12m + 10sm + 14st + 2a; A. coronatus: 12m + 12sm + 12st + 2a; A. disciger: 10m + 12sm + 14st + 2a; A. niger: 12m + 18sm + 6st + 2a; A. rugosus: 16m + 12sm + 8st + 2a; A. echinatior: 8m + 6sm + 14st + 10a), in the distribution of heterocromatin (C banding) and GC rich regions (CMA3). For three species (A. coronatus, A. disciger, A. niger) the first subtelocentric pair was the bearer of ribosomal genes. Acromyrmex species presented stability in the number of chromosome with differences in the karyotype. The results suggest that many chromosomal rearrangements such as translocations, growth of heterochromatin and inversion may have occurred during their differentiation, contributing to the karyotype variability found.A tribo Attini é um grupo monofilético que inclui mais de 230 espécies agrupadas em 14 gêneros. Nesta tribo estão incluídas as formigas cortadeiras (Atta e Acromyrmex), consideradas importantes pragas agrícolas. A utilização da citogenética na família Formicidae tem mostrado importante contribuição nas mais de 750 espécies de formigas estudadas. Os dados citogenéticos são reportados para 10% das espécies da tribo Attini. O presente trabalho teve como objetivo o estudo citogenético de seis espécies do gênero Acromyrmex e de sete espécies de Attini distribuídas em quatro gêneros: Apterostigma, Mycocepurus, Sericomyrmex e Trachymyrmex. Parte das espécies foi submetida a técnicas de bandamentos cromossômicos. Os cariótipos observados foram: Apterostigma madidiense Weber (n=23, 7m + 10sm + 5st + 1a), A. steigeri Santschi (2n=22, 20m + 2sm), Mycocepurus goeldii (Forel) (2n=8, 4m + 4sm), Sericomyrmex sp. (2n=50, 44m + 6sm; n=25, 22m + 3sm), Trachymyrmex fuscus Emery (2n=18, 16m + 2sm; n=9, 8m + 1sm), T. relictus Borgmeier (2n=20m, n=10m) e Trachymyrmex sp. (2n=22, 18m + 4sm). Trachymyrmex fuscus apresentou polimorfismo de tamanho no braço curto do par submetacêntrico. As possíveis causas da duplicação do segmento cromossômico são discutidas. As seis espécies do gênero Acromyrmex apresentaram 2n=38 cromossomos. Cada espécie mostrou um cariótipo diferente em relação à morfologia (A. balzani: 12m + 10sm + 14st + 2a; A. coronatus: 12m + 12sm + 12st + 2a; A. disciger: 10m + 12sm + 14st + 2a; A. niger: 12m + 18sm + 6st + 2a; A. rugosus: 16m + 12sm + 8st + 2a; A. echinatior: 8m + 6sm + 14st + 10a) e variações na distribuição de heterocromatina (banda C) e regiões ricas em GC (CMA3). Em três espécies (A. coronatus, A. disciger, A. niger) o par subtelocêntrico de maior tamanho foi o portador de genes ribossomais. As espécies do gênero Acromyrmex apresentaram estabilidade no número cromossômico com diferenças no cariótipo. Isto sugere que rearranjos do tipo translocações, crescimento de heterocromatina e inversão devem ter ocorrido durante a evolução das espécies deste gênero, levando a modificações nos cariótipos das diferentes espécies.Conselho Nacional de Desenvolvimento Científico e Tecnológicoapplication/pdfporUniversidade Federal de ViçosaMestrado em Genética e MelhoramentoUFVBRGenética animal; Genética molecular e de microrganismos; Genética quantitativa; Genética vegetal; MeCitogenéticaAttiniEvolução cromossômicaCytogeneticAttiniChromosomal evolutionCNPQ::CIENCIAS BIOLOGICAS::GENETICA::GENETICA ANIMALCitogenética de espécies de Attini (Formicidae: Myrmicinae)Cytogenetic of Attini species (Formicidae: Myrmicinae)info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALtexto completo.pdfapplication/pdf4676037https://locus.ufv.br//bitstream/123456789/4730/1/texto%20completo.pdf95dde20b76c33bfd09f530eb8a65e6e5MD51TEXTtexto completo.pdf.txttexto completo.pdf.txtExtracted texttext/plain118917https://locus.ufv.br//bitstream/123456789/4730/2/texto%20completo.pdf.txt7f3421f3fdac6e0cfaf5279ffd3232c3MD52THUMBNAILtexto completo.pdf.jpgtexto completo.pdf.jpgIM Thumbnailimage/jpeg3624https://locus.ufv.br//bitstream/123456789/4730/3/texto%20completo.pdf.jpg72a5ec13334a54a9c1b0bdbf43765952MD53123456789/47302016-04-10 23:03:33.562oai:locus.ufv.br:123456789/4730Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452016-04-11T02:03:33LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false
dc.title.por.fl_str_mv Citogenética de espécies de Attini (Formicidae: Myrmicinae)
dc.title.alternative.eng.fl_str_mv Cytogenetic of Attini species (Formicidae: Myrmicinae)
title Citogenética de espécies de Attini (Formicidae: Myrmicinae)
spellingShingle Citogenética de espécies de Attini (Formicidae: Myrmicinae)
Barros, Luísa Antônia Campos
Citogenética
Attini
Evolução cromossômica
Cytogenetic
Attini
Chromosomal evolution
CNPQ::CIENCIAS BIOLOGICAS::GENETICA::GENETICA ANIMAL
title_short Citogenética de espécies de Attini (Formicidae: Myrmicinae)
title_full Citogenética de espécies de Attini (Formicidae: Myrmicinae)
title_fullStr Citogenética de espécies de Attini (Formicidae: Myrmicinae)
title_full_unstemmed Citogenética de espécies de Attini (Formicidae: Myrmicinae)
title_sort Citogenética de espécies de Attini (Formicidae: Myrmicinae)
author Barros, Luísa Antônia Campos
author_facet Barros, Luísa Antônia Campos
author_role author
dc.contributor.authorLattes.por.fl_str_mv http://lattes.cnpq.br/3102759229194899
dc.contributor.author.fl_str_mv Barros, Luísa Antônia Campos
dc.contributor.advisor-co1.fl_str_mv Souza, Danival José de
dc.contributor.advisor-co1Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4702164J6
dc.contributor.advisor-co2.fl_str_mv Lúcia, Terezinha Maria Castro Della
dc.contributor.advisor-co2Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783306E2
dc.contributor.advisor1.fl_str_mv Pompolo, Silvia das Graças
dc.contributor.advisor1Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780564A2
dc.contributor.referee1.fl_str_mv Costa, Marco Antonio
dc.contributor.referee1Lattes.fl_str_mv http://lattes.cnpq.br/8721647772738636
dc.contributor.referee2.fl_str_mv Santos, Jorge Abdala Dergam dos
dc.contributor.referee2Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780131D9
contributor_str_mv Souza, Danival José de
Lúcia, Terezinha Maria Castro Della
Pompolo, Silvia das Graças
Costa, Marco Antonio
Santos, Jorge Abdala Dergam dos
dc.subject.por.fl_str_mv Citogenética
Attini
Evolução cromossômica
topic Citogenética
Attini
Evolução cromossômica
Cytogenetic
Attini
Chromosomal evolution
CNPQ::CIENCIAS BIOLOGICAS::GENETICA::GENETICA ANIMAL
dc.subject.eng.fl_str_mv Cytogenetic
Attini
Chromosomal evolution
dc.subject.cnpq.fl_str_mv CNPQ::CIENCIAS BIOLOGICAS::GENETICA::GENETICA ANIMAL
description The tribe Attini consists of a monophyletic group that includes about 230 species in 14 genera. Different biological substrate are utilized by these ants for cultivation of the symbiotic fungus on which they feed and are necessarily dependent. This tribe includes the leaf-cutting ants (Atta Fabricius and Acromyrmex Mayr) that are known as important agricultural pests. The usage of cytogenetics in the family Formicidae has made significant contributions in the study of more than 750 ant species. Only 10% of Attini’s species have some sort of cytogenetic data available. This work aimed at cytogenetically studying six Acromyrmex species and seven species of the tribe Attini divided into four genera: Apterostigma Mayr, Mycocepurus Forel, Sericomyrmex Mayr and Trachymyrmex Forel. Some of the species were also submitted to banding techniques. The karyotypes observed were: Apterostigma madidiense Weber (n=23, 7m + 10sm + 5st + 1a), Apterostigma steigeri Santschi (2n=22, 20m + 2sm), Mycocepurus goeldii (2n=8, 4m + 4sm), Sericomyrmex sp. (2n=50, 44m + 6 sm; n=25, 22m + 3 sm), Trachymyrmex fuscus Emery (2n=18, 16m + 2sm; n=9, 8m + 1sm), Trachymyrmex relictus Borgmeier (2n=20m, n=10m) and Trachymyrmex sp. (2n=22, 18m + 4sm). A size polymorphism on a short arm of a submetacentric pair from Trachymyrmex fuscus was also pointed out. The possible causes of chromosomal segment duplication were discussed. All studied species of the genus Acromyrmex presented 2n=38. Each species showed a different karyotype in relation to morphology (A. balzani: 12m + 10sm + 14st + 2a; A. coronatus: 12m + 12sm + 12st + 2a; A. disciger: 10m + 12sm + 14st + 2a; A. niger: 12m + 18sm + 6st + 2a; A. rugosus: 16m + 12sm + 8st + 2a; A. echinatior: 8m + 6sm + 14st + 10a), in the distribution of heterocromatin (C banding) and GC rich regions (CMA3). For three species (A. coronatus, A. disciger, A. niger) the first subtelocentric pair was the bearer of ribosomal genes. Acromyrmex species presented stability in the number of chromosome with differences in the karyotype. The results suggest that many chromosomal rearrangements such as translocations, growth of heterochromatin and inversion may have occurred during their differentiation, contributing to the karyotype variability found.
publishDate 2010
dc.date.issued.fl_str_mv 2010-07-19
dc.date.available.fl_str_mv 2011-10-26
2015-03-26T13:42:17Z
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dc.identifier.citation.fl_str_mv BARROS, Luísa Antônia Campos. Cytogenetic of Attini species (Formicidae: Myrmicinae). 2010. 88 f. Dissertação (Mestrado em Genética animal; Genética molecular e de microrganismos; Genética quantitativa; Genética vegetal; Me) - Universidade Federal de Viçosa, Viçosa, 2010.
dc.identifier.uri.fl_str_mv http://locus.ufv.br/handle/123456789/4730
identifier_str_mv BARROS, Luísa Antônia Campos. Cytogenetic of Attini species (Formicidae: Myrmicinae). 2010. 88 f. Dissertação (Mestrado em Genética animal; Genética molecular e de microrganismos; Genética quantitativa; Genética vegetal; Me) - Universidade Federal de Viçosa, Viçosa, 2010.
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dc.publisher.department.fl_str_mv Genética animal; Genética molecular e de microrganismos; Genética quantitativa; Genética vegetal; Me
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