{"id":2233,"date":"2026-01-29T20:52:12","date_gmt":"2026-01-29T23:52:12","guid":{"rendered":"https:\/\/divulga.unila.edu.br\/ecologiaesaude\/?p=2233"},"modified":"2026-03-31T10:40:37","modified_gmt":"2026-03-31T13:40:37","slug":"o-uso-de-wolbachia-para-interromper-a-transmissao-de-virus-transmitidos-pelo-aedes","status":"publish","type":"post","link":"https:\/\/divulga.unila.edu.br\/ecologiaemrede\/2026\/01\/29\/o-uso-de-wolbachia-para-interromper-a-transmissao-de-virus-transmitidos-pelo-aedes\/","title":{"rendered":"O uso de Wolbachia para interromper a transmiss\u00e3o de v\u00edrus transmitidos pelo ?????"},"content":{"rendered":"\t\t
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\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 As arboviroses, como a dengue, zika e chikungunya, s\u00e3o consideradas um grave problema de sa\u00fade p\u00fablica em muitos pa\u00edses, incluindo o Brasil. Frente a isso, os cientistas t\u00eam desenvolvido ao longo da hist\u00f3ria muitas t\u00e9cnicas para combater seu vetor (mosquitos do G\u00eanero Aedes<\/em>), como t\u00e9cnicas qu\u00edmicas, f\u00edsicas e biol\u00f3gicas, nem sempre bem sucedidas. Por isso, atualmente est\u00e3o sendo desenvolvidas novas t\u00e9cnicas, como \u00e9 o caso do uso da Wolbachia<\/em>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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O que \u00e9 Wolbachia?<\/span><\/h4><\/div>

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0A Wolbachia<\/em> \u00e9 uma bact\u00e9ria que infecta at\u00e9 40-60% de todas as esp\u00e9cies de insetos (mas n\u00e3o infecta o Aedes aegypti). Ela \u00e9 um endossimbionte bacteriano, ou seja, \u00e9 uma bact\u00e9ria que mora dentro do inseto. Por muito tempo essa bact\u00e9ria foi de interesse para os bi\u00f3logos pela sua capacidade de influenciar na reprodu\u00e7\u00e3o do inseto de maneira que possa transmitir seus genes para as seguintes gera\u00e7\u00f5es. A Wolbachia<\/em> \u00e9 herdada pela m\u00e3e atrav\u00e9s do citoplasma do ovo do inseto, favorecendo direta ou indiretamente as f\u00eameas de insetos que carregam Wolbachia<\/em> para deixar para tr\u00e1s mais descendentes do que as f\u00eameas n\u00e3o infectadas. A figura abaixo explica como isso acontece.<\/span><\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Figura 1: Din\u00e2mica da transmiss\u00e3o da Wolbachia (Modificada de O\u2019Neill, 2018) <\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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A<\/span><\/strong>. <\/strong> Se um Aedes aegypti<\/em> macho com Wolbachia <\/em>se cruza com uma f\u00eamea que n\u00e3o tem a bact\u00e9ria, os ovos que ela produzir ser\u00e3o invi\u00e1veis e n\u00e3o originar\u00e3o novos mosquitos.<\/p><\/div>

B. <\/strong> Se um A. aegypti<\/em> macho com Wolbachia<\/em> se cruza com uma f\u00eamea que tamb\u00e9m tem a bact\u00e9ria, os ovos ser\u00e3o vi\u00e1veis e os descendentes ser\u00e3o portadores de Wolbachia<\/em>.<\/span><\/p><\/div>

C. <\/strong> Se A. aegypti<\/em> macho sem Wolbachia<\/em> se cruza com uma f\u00eamea com Wolbachia<\/em>, os ovos ser\u00e3o vi\u00e1veis e os descendentes herdar\u00e3o a bact\u00e9ria.<\/span><\/p><\/div>

Assim, ao longo das gera\u00e7\u00f5es, quase todos os mosquitos dessa popula\u00e7\u00e3o ter\u00e3o a bact\u00e9ria.<\/span><\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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E por que seria interessante mais indiv\u00edduos da popula\u00e7\u00e3o portadores de <\/strong>Wolbachia<\/em><\/strong>?<\/strong><\/span><\/p><\/div>

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 O fato de ter a maioria dos A. aegypti<\/em> infetados com Wolbachia<\/em> reduz o n\u00famero de transmiss\u00f5es de doen\u00e7as (dengue, zika, chikungunya e outras), pois a Wolbachia<\/em> dificulta que os v\u00edrus e outros pat\u00f3genos se desenvolvam normalmente dentro do Aedes aegypti,<\/em> j\u00e1 que existe uma disputa por recursos entre a bact\u00e9ria e o v\u00edrus. Neste contexto, a bact\u00e9ria leva vantagem sobre o v\u00edrus e, como a Wolbachia<\/em> \u00e9 um microrganismo que s\u00f3 vive nas c\u00e9lulas de insetos, ela n\u00e3o pode ser transmitida para humanos e outros mam\u00edferos. Como a transmiss\u00e3o da Wolbachia<\/em> \u00e9 vertical (de m\u00e3e para filho) tamb\u00e9m \u00e9 baixo o risco de contamina\u00e7\u00e3o das esp\u00e9cies nativas. <\/span><\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Quem est\u00e1 usando a WOLBACHIA?<\/span><\/h3>

\u00a0 \u00a0 \u00a0 \u00a0 O \u201cWorld Mosquito Program\u201d (WMP) ou \u201cPrograma Mundial do Mosquito\u201d \u00e9 um cons\u00f3rcio de pesquisa sem fins lucrativos que usam a bact\u00e9ria para o controle de v\u00edrus transmitidos por Aedes aegypti<\/em>. O principal objetivo do programa \u00e9 liberar intencionalmente mosquitos infectados com Wolbachia<\/em> em \u00e1reas-alvo onde esses mosquitos ir\u00e3o transmitir a Wolbachia<\/em> para as popula\u00e7\u00f5es de mosquitos selvagens ao longo de v\u00e1rias gera\u00e7\u00f5es diminuindo a compet\u00eancia dessas popula\u00e7\u00f5es de A. aegypti <\/em>para transmitir pat\u00f3genos. O programa atualmente atua em v\u00e1rios pa\u00edses, mas as primeiras libera\u00e7\u00f5es foram feitas na Austr\u00e1lia.<\/span><\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Figura 2: Pa\u00edses onde o Programa Mundial do Mosquito atua. Fonte: O\u2019Neill (2018).<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\u00a0 \u00a0 \u00a0 \u00a0 \u00a0Para implementar o programa, \u00e9 necess\u00e1rio liberar mosquitos machos e f\u00eameas portadoras de Wolbachia<\/em> at\u00e9 que essas popula\u00e7\u00f5es se estabele\u00e7am localmente. Os primeiros experimentos foram realizados no norte da Austr\u00e1lia, onde foram liberados 10 mosquitos machos e f\u00eameas em cada casa da cidade, uma vez por semana, durante 10 semanas. Isso foi suficiente para estabelecer a bact\u00e9ria na popula\u00e7\u00e3o local de mosquitos.<\/span><\/p><\/div>

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0O tempo necess\u00e1rio para o estabelecimento de popula\u00e7\u00f5es locais infectadas \u00e9 vari\u00e1vel, mas as libera\u00e7\u00f5es piloto foram realizadas com sucesso em cinco pa\u00edses (Austr\u00e1lia, Indon\u00e9sia, Vietn\u00e3, Brasil e Col\u00f4mbia). Os resultados indicam que a cepa pode ser implantada com sucesso em diversos ambientes, tanto ecol\u00f3gica quanto culturalmente. Os dados observacionais dessas implanta\u00e7\u00f5es suportam grandes impactos na transmiss\u00e3o de doen\u00e7as, conforme previsto por modelagem.<\/span><\/p><\/div>

\u00a0 \u00a0 \u00a0 \u00a0 O fato de que o estabelecimento do mosquito com Wolbachia<\/em> seja f\u00e1cil, \u00e9 um atributo muito importante do programa pois os custos de implementa\u00e7\u00e3o s\u00f3 ocorrem no in\u00edcio quando s\u00e3o realizadas as libera\u00e7\u00f5es, evitando a necessidade de gastos cont\u00ednuos, como \u00e9 o caso de outras interven\u00e7\u00f5es (inseticidas, mosquitos transg\u00eanicos, etc .)<\/span><\/p><\/div>

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Dada a semelhan\u00e7a na ecologia da dengue e da zika, a Wolbachia<\/em> bloqueia a transmiss\u00e3o da zika da mesma forma que o v\u00edrus da dengue. Por isso, em 2016 um grupo consultivo especial da OMS recomendou publicamente que as interven\u00e7\u00f5es de Wolbachia<\/em> deveriam ser implantadas em escalas maiores, dadas as evid\u00eancias preliminares. Por isso, duas grandes implanta\u00e7\u00f5es piloto foram iniciadas em Niter\u00f3i, no estado do Rio de Janeiro no Brasil e em Medell\u00edn, Bello na Col\u00f4mbia.<\/span><\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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_________________________________________________________________________________<\/p>

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Por Grecia Antonella<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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REFER\u00caNCIAS BIBLIOGR\u00c1FICAS<\/strong><\/span><\/h3><\/div>

O\u2019Neill S.L. The Use of Wolbachia by the World Mosquito Program to Interrupt Transmission of Aedes aegypti<\/em> Transmitted Viruses. Hilgenfeld R., Vasudevan S. (eds) Dengue and Zika: Control and Antiviral Treatment Strategies. <\/strong>Advances in Experimental Medicine and Biology 1062, Springer, 2018. Dispon\u00edvel em <https:\/\/doi.org\/10.1007\/978-981-10-8727-1_24<\/a>>. Acesso em: 23 de agosto de 2021<\/span><\/p><\/div>

Veja mais em:<\/span><\/p><\/div>

https:\/\/www.worldmosquitoprogram.org\/brasil\/sobre-o-metodo-wolbachia<\/a><\/span><\/p><\/div>

https:\/\/www.instagram.com\/wmpbrasil\/<\/a><\/span><\/p><\/div>

https:\/\/www.youtube.com\/watch?v=NjrMT4cDLWY<\/u><\/a> <\/span><\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

As arboviroses, como a dengue, zika e chikungunya, s\u00e3o consideradas um grave problema de sa\u00fade p\u00fablica em muitos pa\u00edses, incluindo o Brasil. Frente a isso, os cientistas t\u00eam desenvolvido ao longo da hist\u00f3ria muitas t\u00e9cnicas para combater seu vetor (mosquitos do G\u00eanero Aedes), como t\u00e9cnicas qu\u00edmicas, f\u00edsicas e biol\u00f3gicas, nem sempre bem sucedidas. Por isso, atualmente est\u00e3o sendo desenvolvidas novas t\u00e9cnicas, como \u00e9 o caso do uso da Wolbachia.<\/p>\n","protected":false},"author":183,"featured_media":2234,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_theme","format":"standard","meta":{"_uag_custom_page_level_css":"","site-container-style":"default","site-container-layout":"default","site-sidebar-layout":"default","disable-article-header":"default","disable-site-header":"default","disable-site-footer":"default","disable-content-area-spacing":"default","_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[38],"tags":[],"class_list":["post-2233","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-acervo-de-publicacoes"],"yoast_head":"\nO uso de Wolbachia para interromper a transmiss\u00e3o de v\u00edrus transmitidos pelo ????? -<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/divulga.unila.edu.br\/ecologiaemrede\/2026\/01\/29\/o-uso-de-wolbachia-para-interromper-a-transmissao-de-virus-transmitidos-pelo-aedes\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"O uso de Wolbachia para interromper a transmiss\u00e3o de v\u00edrus transmitidos pelo ????? -\" \/>\n<meta property=\"og:description\" content=\"As arboviroses, como a dengue, zika e chikungunya, s\u00e3o consideradas um grave problema de sa\u00fade p\u00fablica em muitos pa\u00edses, incluindo o Brasil. 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