Biological Control of Common Salvinia (Salvinia minima) in Louisiana Using Cyrtobagous salviniae (Coleoptera: Curculionidae)
Abstract
Common salvinia, Salvinia minima Baker, is an aquatic invasive fern that obstructs waterways and impacts water quality throughout the southeastern United States. In an effort to establish populations for classical biological control of this weed, the weevil, Cyrtobagous salviniae Calder and Sands, was released at multiple sites across Louisiana. Many of the release sites were lost due to a variety of ecological and anthropological disturbances. In 2008, C. salviniae was found to have successfully overwintered on S. minima in Gramercy, Louisiana. Attack by Cyrtobagous salviniae significantly increased the number of damaged terminal buds and decreased the fresh weight biomass of S. minima.La salvinia común, Salvinia mínima Baker, es un helecho acuático invasor que obstruye vías fluviales y afecta la calidad de agua por el sureste de los Estados Unidos. Para fundar poblaciones de control biológico clásico el gorgojo Cyrtobagous salviniae Calder y Sands fue introducido en múltiples sitios por toda Louisiana. Fueron perdidos muchos sitios de introducción debido a varias alteraciones ecológicas y antropológicas. En 2008 fue notado que C. salviniae invernó exitosamente en S. mínima en Gramercy, Louisiana. El ataque de Cyrtobagous salviniae aumentó apreciablemente la cantidad de brotes terminales dañados y disminuyó la biomasa fresca de S. minima.
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