Assessment of toxicity of dissolved and microencapsulated biocides for control of the Golden Mussel Limnoperna fortunei

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• 作者：S谩vio Henrique C. Calazans ; Juliana Alves Americo ; Flavio da Costa Fern ; es ; David C. Aldridge ; Mauro de Freitas Rebelo
• 关键词：Amazon ; Environmental impact ; Environmental protection ; Exotic species ; Filter feeding ; Fouling organisms ; Introduced species ; LC50 ; Lethal effects
• 刊名：Marine Environmental Research
• 出版年：October, 2013
• 年：2013
• 卷：91
• 期：Complete
• 页码：104-108
• 全文大小：600 K

文摘

Biological invasions currently pose major threats to ecosystems worldwide. Invasive bivalves such as the Golden Mussel Limnoperna fortunei can act as 鈥榚nvironmental engineers鈥? altering biogeochemistry, reducing biodiversity, and literally changing the landscape of aquatic environments. The risk that this mussel will invade the Amazon basin is a great concern for environmental authorities, especially because no efficient control methods presently exist. In this study, we tested new microencapsulated chemicals, along with the traditional dissolved chlorine and KCl, as alternatives to control L.聽fortunei infestation in industrial and water supply plants along rivers. Because these bivalves can close their valves when they sense toxic substances in the water, microencapsulation has improved the effectiveness of the chemicals in controlling L.聽fortunei, reducing variation in the application and increasing toxicity compared to dissolved chemicals. Microencapsulation should be seriously considered as an alternative to replace hazardous chlorine.