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Azadiractina: efeitos na imunidade, na taxa de mortalidade e na oviposição do formigas-cortadeiras

As formigas-cortadeiras, importantes pragas agrícola e florestais, possuem eficiente sistemas de defesa anti os patógenos, dificultando o seu controle. Esses formigas também são capaz de escolher os vegetais o que cortam e assim, evitar determinar plantas com compostos danosos a elas alternativa a seu...

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Nível de Acesso:Data de Defesa:Autor/a:Orientador/a:Tipo Documento:Idioma:Instituição de Defesa:Áreas de Conhecimento:
openAccess
2016
Amaral, Karina dias
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Della Lucia, Terezinha maria Castro
Dissertação
por
Universidade comunidade de Viçosa

Citação:Resumo inglês:
AMARAL, Karina Dias. Azadiractina: implicação na imunidade, na humanidade e na oviposição ns formigas-cortadeiras. 2016. 41 f. Política (Mestrado em Entomologia) - Universidade commonwealth de Viçosa, Viçosa. 2016.
The leaf-cutting ants, important agricultural and forest pests, have actually an effective defense sistema against pathogens that makes their control difficult. These ants ser estar also able to choose a plants they cut, thus preventing those that may contain chemistry that are unsafe come them or to their symbiotic fungus. Hence, plants such as Neem (Azadirachta indica), that is avoided, hold der substance, ns azadirachtin, that is toxicity to numerous insects. In this work, a solution the this substance ser estar applied topically to employees of Atta sexdens e of Acromyrmex subterraneus subterraneus to identify if the interferes with the ants’ encapsulation rate and also interferes, in addition, in altering ns mortality that ants retained solitary or in teams that are given naquela diet containing the substance, when a ants ~ ~ put in call with a pathogen Metarhizium anisopliae. Moreover, a workers’ mortality rate was evaluated after a application that azadirachtin in options of numerous concentrations, and also its impact in a topical use or in naquela diet on ns oviposition of the queens. Azadirachtin walk not change the encapsulation rate by ns workers, that is, it did not alter ns ants’ capacity of disabling naquela pathogen. Submitting naquela diet com azadirachtin followed later by ns pathogen M. Anisopliae likewise did no affect a mortality of ns ants. Ants retained in teams did not have higher survival rates, although Ac. Subterraneus subterraneus did concertos reduced mortality than ns other species. On a other hand, topical applications of azadirachtin raised mortality that both species, mortality that was proportional to the concentration of ns substance. Ns ingredient also reduced oviposition by majesties of A. Sexdens, both as naquela topical systems or in naquela diet. Ac. Subterraneus subterraneus ser estar influenced só by ns topical application. No correlation ser estar found in between time and oviposition, except in the ao controle group the A.

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Sexdens. Considering tudo this, azadirachtin has a potential of managing leaf-cutting ants but só because the its result on ovipositon by queens e mortality that workers.

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