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Florida Entomologist
Article . 2013 . Peer-reviewed
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Florida Entomologist
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License: CC BY NC
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Damage byNeochetinaWeevils (Coleoptera: Curculionidae) Induces Resistance inEichhornia crassipes(Commelinales: Pontederiaceae)

Authors: Amanda L. Buchanan;

Damage byNeochetinaWeevils (Coleoptera: Curculionidae) Induces Resistance inEichhornia crassipes(Commelinales: Pontederiaceae)

Abstract

Induced resistance in invasive plants might influence herbivore performance or preference, and hamper herbivore-based biological control management. Specialist weevils Neochetina eichhorniae Hustache (Coleoptera: Curculionidae) and N. bruchi Warner (Coleoptera: Curculionidae) are two herbivores commonly used to control Eichhornia crassipes (Mart.) Solms (Commelinales: Pontederiaceae), a destructive and widespread invasive plant. However, we do not know whether Neochetina weevils induce resistance in E. crassipes. I report results from excised-leaf bioassay and whole-plant choice experiments testing adult weevil preference and performance in response to previous damage. I found that adult weevil damage induced resistance in E. crassipes, decreasing weevil performance, but simulated damage did not influence weevil performance in a comparable way. Simulated damage did, however, influence weevil preference. This study is the first test for induced resistance to Neochetina weevil herbivory in Eichhornia crassipes. resumen La resistencia inducida en plantas invasoras puede influir en el desempeno de los herbivoros o preferencia el desempeno o la preferencia de los herbivoros y ser un obstaculo para el control biologico basado en los herbivoros . Los gorgojos especializados, Neochetina eichhorniae Hustache (Coleoptera: Curculionidae) y N. bruchi Warner (Coleoptera: Curculionidae), son dos herbivoros comunmente utilizados para controlar la Eichhornia crassipes (Mart.) Solms (Commelinales: Pontederiaceae), una planta invasora y destructiva de amplia distribucion. Sin embargo, no sabemos si los gorgojos Neochetina inducen resistencia en E. crassipes. Se informan los resultados de un bioensayo de hojas extirpadas y experimentos de opciones con plantas enteras que probaron la preferencia y el desempeno de adultos de gorgojos en respuesta al dano hecho anteriormente. Se encontro que el dano del adulto del gorgojo indujo resistencia en E. crassipes, disminuyendo el desempeno del gorgojo, pero el dano simulado no influyo en el desempeno del gorgojo de una manera comparable. El dano simulado, sin embargo, influyo en la preferencia del gorgojo. Este estudio es la primera prueba de la resistencia inducida por el gorgojo Neochetina en Eichhornia crassipes. Palabras Clave: Neochetina eichhorniae, Neochetina bruchi, el jacinto de agua, herbivoria, biocontrol biologico

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
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