【类型】期刊
【题名】Molluscicidal activity of tea saponin to Pomacea canaliculata and its safety evaluation against three aquatic organisms.
【关键词】 植物源农药 水生生物 tea saponin botanical pesticide 茶皂素 safety evaluation 田间药效 field control efficacy aquatic organism 福寿螺 安全性评价 杀螺活性 molluscicidal activity Pomacea canaliculata
【期刊名】Chinese Journal of Pesticide Science / Nongyaoxue Xuebao
【摘要】Pomacea canaliculata, golden apple snail, has been listed as one of the 100 most destructive invasive alien species in the world by the International Union for Conservation of Nature. Recently, tea saponin, a botanical pesticide, has been reported to show effective molluscicidal activity. However, safety evaluation of tea saponin to environment is scarce. In this work, the toxicity of tea saponin to P. canaliculata was tested in the lab and the safety evaluation of tea saponin against three aquatic organisms was investigated. In addition, the field control efficacy of tea saponin to P. canaliculata was evaluated. The results showed that tea saponin was effective to P. canaliculata under the conditions of lab, and the LC50 values (all of the following values are shown in the form of active ingredients) against late adult, early adult and larvae snails were 2.61, 2.39 and 2.68 mg/L, respectively. Furthermore, tea saponin showed low toxicity to Daphnia magna (EC50 of 17.77 mg/L) and moderate toxicity to Barchydonio rerio (LC50 of 1.76 mg/L). Tea saponin could also promote the growth of Selenastrum capricornutum at the concentration of 100 mg/L. Application of tea saponin at dosages of 2.03, 2.25 and 2.48 kg/hm² resulted in a corrected control efficacy of higher than 90% to P. canaliculata in the field, which showed similar control effect to that of commercialized molluscicides, metaldehyde with 0.45 kg/hm² and niclosamide ethanolamine with 0.57 kg/hm². The present results will pave the way for the effective management of P. canaliculata with tea saponin in the field.
【年份】2021
【ISSN】1008-7303
【页码】139-145
【作者单位】1福建农林大学 闽台作物有害生物生态防控国家重点实验室，福州 350002. 2福建农林大学 植物保护学院， 福建省昆虫生态重点实验室，福州 350002.
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