Effects of glyphosate-based herbicides on survival, development and growth of invasive snail (Pomacea canaliculata)
文献类型: 外文期刊
第一作者: Xu, Yanggui
作者: Xu, Yanggui;Li, Adela Jing;Qin, Junhao;Li, Huashou;Xu, Yanggui;Li, Adela Jing;Qin, Junhao;Li, Huashou;Li, Kaibin;Li, Adela Jing
作者机构:
关键词: Invasive species;Glyphosate;Physiological response;Metabolism;Enzyme activity
期刊名称:AQUATIC TOXICOLOGY ( 影响因子:4.964; 五年影响因子:5.071 )
ISSN: 0166-445X
年卷期: 2017 年 193 卷
页码:
收录情况: SCI
摘要: This study tests the hypotheses that whether environmental relevance of glyphosate would help control spread of the invasive snail Pomacea canaliculata, or benefit its population growth worldwide. Our results showed that glyphosate induced acute toxicity to the snail only at high concentrations (96 h LC50 at 175 mg/L) unlikely to occur in the environment. Long-term exposures to glyphosate at sublethal levels (20 and 120 mg/L) caused inhibition of food intake, limitation of growth performance and alterations in metabolic profiles of the snail, It is worth noting that glyphosate at 2 mg/L benefited growth performance in P. canaliculata. Chronic exposures of glyphosate significantly enhanced overall metabolic rate and altered catabolism from protein to carbohydrate/lipid mode. Cellular responses in enzyme activities showed that the exposed snails could increase tolerance by their defense system against glyphosate-induced oxidative stress, and adjustment of metabolism to mitigate energy crisis. Our study displayed that sublethal concentrations of glyphosate might be helpful in control of the invasive species by food intake, growth performance and metabolic interruption; whether environmental relevance of glyphosate (<= 2 mg/L) benefits population growth of P. canaliculata is still inconclusive, which requires further field study.
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