Papel de Syncephalastrum racemosum como antagonista do fungo cultivado pelas formigas cortadeiras

Detalhes bibliográficos
Autor(a) principal: Chagas, Felipe Pedrosa [UNESP]
Data de Publicação: 2013
Tipo de documento: Trabalho de conclusão de curso
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/118650
Resumo: Currently, the major method for controlling leaf-cutting ants uses toxic baits containing the insecticide sulfluramide. Such compound presents harmful effects to the environment and to human health, which drive the community’s concerns towards new strategies for controlling these insects. Previous studies showed the occurrence of Syncephalastrum racemosum in nests of the leaf-cutting ants submitted to treatments using insecticides. In order to understand the role of S. racemosum in nests of leaf-cutting ants, the present work investigated the antagonism of S. racemosum towards the leaf-cutting ant-cultivar (Leucoagaricus gongylophorus). Using in vitro essays, we co-cultivated L. gongylophorus and S. racemosum (n= 6 lineages). For comparison, we also used the same setup to test one strain of Escovopsis weberi, since this fungus is considered a specialized parasite of the leaf-cutting ant cultivar. All S. racemosum strains inhibited the growth of L. gongylophorus (ANOVA 2 way, F= 23,61, P< 0,01). The same was observed for E. weberi. There were no significant difference between S. racemosum and E. weberi inhibition (Bonferroni test, P> 0,05). In addition, we verified that all S. racemosum strains colonized and sporulated over the fungus garden up to 96 h after garden fragments without workers were inoculated with spores suspensions. Similar results were observed on gardens that were inoculated with spores of E. weberi. The results indicate that S. racemosum act as antagonist of the leaf-cutting ant cultivar. The putative possibility for using S. racemosum as biological control agent of leaf-cutting ants is discussed in the present work
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spelling Papel de Syncephalastrum racemosum como antagonista do fungo cultivado pelas formigas cortadeirasFormigaFormiga-cortadeiraFungosPragas - Controle biologicoFungos filamentososCurrently, the major method for controlling leaf-cutting ants uses toxic baits containing the insecticide sulfluramide. Such compound presents harmful effects to the environment and to human health, which drive the community’s concerns towards new strategies for controlling these insects. Previous studies showed the occurrence of Syncephalastrum racemosum in nests of the leaf-cutting ants submitted to treatments using insecticides. In order to understand the role of S. racemosum in nests of leaf-cutting ants, the present work investigated the antagonism of S. racemosum towards the leaf-cutting ant-cultivar (Leucoagaricus gongylophorus). Using in vitro essays, we co-cultivated L. gongylophorus and S. racemosum (n= 6 lineages). For comparison, we also used the same setup to test one strain of Escovopsis weberi, since this fungus is considered a specialized parasite of the leaf-cutting ant cultivar. All S. racemosum strains inhibited the growth of L. gongylophorus (ANOVA 2 way, F= 23,61, P< 0,01). The same was observed for E. weberi. There were no significant difference between S. racemosum and E. weberi inhibition (Bonferroni test, P> 0,05). In addition, we verified that all S. racemosum strains colonized and sporulated over the fungus garden up to 96 h after garden fragments without workers were inoculated with spores suspensions. Similar results were observed on gardens that were inoculated with spores of E. weberi. The results indicate that S. racemosum act as antagonist of the leaf-cutting ant cultivar. The putative possibility for using S. racemosum as biological control agent of leaf-cutting ants is discussed in the present workA principal forma de controle das formigas cortadeiras emprega iscas tóxicas contendo o formicida sulfluramida. Tal composto químico apresenta efeitos danosos ao ambiente, fato que motiva estratégias alternativas de combate dessas formigas. Estudos prévios demonstraram que ninhos de formigas cortadeiras submetidos a tratamentos com inseticidas podem apresentar o fungo Syncephalastrum racemosum. Na tentativa de compreender o papel desse fungo nos ninhos das formigas cortadeiras, o presente trabalho investigou o antagonismo de S. racemosum frente ao fungo cultivado pelas formigas (Leucoagaricus gongylophorus). Em ensaios in vitro, o fungo mutualista das formigas foi incubado na presença de S. racemosum (n= 6 linhagens). Uma linhagem de Escovopsis weberi foi utilizada nos experimentos para fins de comparação, pois sabe-se que esse fungo é considerado parasita especializado de L. gongylophorus. Todas as linhagens de S. racemosum inibiram significativamente o crescimento de L. gongylophorus (ANOVA – 2 critérios, F= 23,61, P< 0,01). O mesmo ocorreu para a linhagem de E. weberi. Não houve diferença significativa na inibição entre as linhagens de S. racemosum e E. weberi (Teste de Bonferroni, P> 0,05). Adicionalmente, verificou-se que as seis linhagens de S. racemosum, quando inoculadas diretamente em fragmentos de jardins de fungo desprovidos de operárias, colonizaram o jardim em até 96 h. O mesmo ocorreu para os fragmentos de jardins nos quais E. weberi foi inoculado. Tanto S. racemosum, quanto E. weberi esporularam por completo sobre os fragmentos de jardins. Os resultados do presente estudo sugerem que S. racemosum atua como antagonista do fungo das formigas. A possibilidade do uso de S. racemosum como agente de controle biológico das formigas cortadeiras é discutida neste trabalhoUniversidade Estadual Paulista (Unesp)Rodrigues, André [UNESP]Universidade Estadual Paulista (Unesp)Chagas, Felipe Pedrosa [UNESP]2015-03-23T15:12:10Z2015-03-23T15:12:10Z2013info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/bachelorThesis39 f.application/pdfCHAGAS, Felipe Pedrosa. Papel de Syncephalastrum racemosum como antagonista do fungo cultivado pelas formigas cortadeiras. 2013. 39 f. Trabalho de conclusão de curso (Ecologia) - Universidade Estadual Paulista, Instituto de Biociências de Rio Claro, 2013.http://hdl.handle.net/11449/118650000751250000751250.pdfAlephreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporinfo:eu-repo/semantics/openAccess2023-10-05T06:05:53Zoai:repositorio.unesp.br:11449/118650Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:05:06.562147Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Papel de Syncephalastrum racemosum como antagonista do fungo cultivado pelas formigas cortadeiras
title Papel de Syncephalastrum racemosum como antagonista do fungo cultivado pelas formigas cortadeiras
spellingShingle Papel de Syncephalastrum racemosum como antagonista do fungo cultivado pelas formigas cortadeiras
Chagas, Felipe Pedrosa [UNESP]
Formiga
Formiga-cortadeira
Fungos
Pragas - Controle biologico
Fungos filamentosos
title_short Papel de Syncephalastrum racemosum como antagonista do fungo cultivado pelas formigas cortadeiras
title_full Papel de Syncephalastrum racemosum como antagonista do fungo cultivado pelas formigas cortadeiras
title_fullStr Papel de Syncephalastrum racemosum como antagonista do fungo cultivado pelas formigas cortadeiras
title_full_unstemmed Papel de Syncephalastrum racemosum como antagonista do fungo cultivado pelas formigas cortadeiras
title_sort Papel de Syncephalastrum racemosum como antagonista do fungo cultivado pelas formigas cortadeiras
author Chagas, Felipe Pedrosa [UNESP]
author_facet Chagas, Felipe Pedrosa [UNESP]
author_role author
dc.contributor.none.fl_str_mv Rodrigues, André [UNESP]
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Chagas, Felipe Pedrosa [UNESP]
dc.subject.por.fl_str_mv Formiga
Formiga-cortadeira
Fungos
Pragas - Controle biologico
Fungos filamentosos
topic Formiga
Formiga-cortadeira
Fungos
Pragas - Controle biologico
Fungos filamentosos
description Currently, the major method for controlling leaf-cutting ants uses toxic baits containing the insecticide sulfluramide. Such compound presents harmful effects to the environment and to human health, which drive the community’s concerns towards new strategies for controlling these insects. Previous studies showed the occurrence of Syncephalastrum racemosum in nests of the leaf-cutting ants submitted to treatments using insecticides. In order to understand the role of S. racemosum in nests of leaf-cutting ants, the present work investigated the antagonism of S. racemosum towards the leaf-cutting ant-cultivar (Leucoagaricus gongylophorus). Using in vitro essays, we co-cultivated L. gongylophorus and S. racemosum (n= 6 lineages). For comparison, we also used the same setup to test one strain of Escovopsis weberi, since this fungus is considered a specialized parasite of the leaf-cutting ant cultivar. All S. racemosum strains inhibited the growth of L. gongylophorus (ANOVA 2 way, F= 23,61, P< 0,01). The same was observed for E. weberi. There were no significant difference between S. racemosum and E. weberi inhibition (Bonferroni test, P> 0,05). In addition, we verified that all S. racemosum strains colonized and sporulated over the fungus garden up to 96 h after garden fragments without workers were inoculated with spores suspensions. Similar results were observed on gardens that were inoculated with spores of E. weberi. The results indicate that S. racemosum act as antagonist of the leaf-cutting ant cultivar. The putative possibility for using S. racemosum as biological control agent of leaf-cutting ants is discussed in the present work
publishDate 2013
dc.date.none.fl_str_mv 2013
2015-03-23T15:12:10Z
2015-03-23T15:12:10Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/bachelorThesis
format bachelorThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv CHAGAS, Felipe Pedrosa. Papel de Syncephalastrum racemosum como antagonista do fungo cultivado pelas formigas cortadeiras. 2013. 39 f. Trabalho de conclusão de curso (Ecologia) - Universidade Estadual Paulista, Instituto de Biociências de Rio Claro, 2013.
http://hdl.handle.net/11449/118650
000751250
000751250.pdf
identifier_str_mv CHAGAS, Felipe Pedrosa. Papel de Syncephalastrum racemosum como antagonista do fungo cultivado pelas formigas cortadeiras. 2013. 39 f. Trabalho de conclusão de curso (Ecologia) - Universidade Estadual Paulista, Instituto de Biociências de Rio Claro, 2013.
000751250
000751250.pdf
url http://hdl.handle.net/11449/118650
dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 39 f.
application/pdf
dc.publisher.none.fl_str_mv Universidade Estadual Paulista (Unesp)
publisher.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.source.none.fl_str_mv Aleph
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
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