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Publication
Resposta do parasitoide Anagonia lasiophthalma (Diptera: Tachinidae), a odores emitidos pelo eucalipto.
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Abstract(s)
Neste estudo procura-se perceber se Anagonia lasiophthalma (Malloch) (Diptera: Tachinidae é um bom agente de biocontrolo para a praga Gonipterus platensis Marelli (Coleoptera; Curculionidae) relativamente à sua especificidade, para tal tentou-se responder de que forma os estímulos odoríferos influenciam a localização do hospedeiro pelas fêmeas de A. lasiophthalma e se os períodos do dia afetam a escolha do hospedeiro. O objetivo deste trabalho é a análise das interações tri-tróficas entre a planta hospedeira E. globulus (Labill.), a praga G.platensis e o parasitoide A. lasiophthalma.Os resultados indicam que as fêmeas de A. lasiophthalma foram atraídas sobretudo por ramos de eucalipto a serem consumidos por G. platensis.Os dados obtidos sugerem um comportamento atrativo das fêmeas de A. lasiophthalma a compostos voláteis induzidos por herbivoria, isto é a planta liberta odores diferentes quando sob ataque de G. platensis que fornecem pistas sobre a localização do hospedeiro à A.lasiophthalma.Este trabalho valida a importância da planta hospedeira para a localização do hospedeiro. A. lasiophthalma pode tornar-se um agente de biocontrolo capaz de colmatar a lacuna no combate à praga com os agentes existentes, aumentando a produção dos povoamentos afetados.
This study aims to assess whether Anagonia lasiophthalma (Malloch) (Diptera: Tachinidae) is an effective biocontrol agent for the pest Gonipterus platensis Marelli (Coleoptera: Curculionidae) in terms of its specificity. To achieve this, the study sought to answer how olfactory stimuli influence host location by A. lasiophthalma females and whether the time of day affects host choice. The objective of this work is to analyze the tritrophic interactions between the host plant E. globulus (Labill.), the pest G. platensis, and the parasitoidA. lasiophthalma. The results indicate that A. lasiophthalma females were particularly attracted to eucalyptus branches being consumed by G. platensis.The data obtained suggest an attractive behavior of A. lasiophthalma females to herbivory-induced volatile compounds, meaning that the plant releases different odors when under attack by G. platensis, which provide cues for host location to A. lasiophthalma.This work validates the importance of the host plant in host location. A. lasiophthalma could become a biocontrol agent capable of filling the gap in pest management with existing agents, thereby enhancing the productivity of affected plantations.
This study aims to assess whether Anagonia lasiophthalma (Malloch) (Diptera: Tachinidae) is an effective biocontrol agent for the pest Gonipterus platensis Marelli (Coleoptera: Curculionidae) in terms of its specificity. To achieve this, the study sought to answer how olfactory stimuli influence host location by A. lasiophthalma females and whether the time of day affects host choice. The objective of this work is to analyze the tritrophic interactions between the host plant E. globulus (Labill.), the pest G. platensis, and the parasitoidA. lasiophthalma. The results indicate that A. lasiophthalma females were particularly attracted to eucalyptus branches being consumed by G. platensis.The data obtained suggest an attractive behavior of A. lasiophthalma females to herbivory-induced volatile compounds, meaning that the plant releases different odors when under attack by G. platensis, which provide cues for host location to A. lasiophthalma.This work validates the importance of the host plant in host location. A. lasiophthalma could become a biocontrol agent capable of filling the gap in pest management with existing agents, thereby enhancing the productivity of affected plantations.
Description
Keywords
Controlo biológico Parasitoide Localização de hospedeiro Voláteis de plantas induzidas por herbívoros