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题名: Acute Toxicity of an Emerging Insecticide Pymetrozine to Procambarus clarkii Associated with Rice-Crayfish Culture (RCIS)
作者: Yu, Jixin1, 2; Xu, Elvis Genbo3; Li, Wei1; Jin, Shiyu1, 2; Yuan, Ting1, 2; Liu, Jiashou1; Li, Zhongjie1; Zhang, Tanglin1
关键词: pesticide ; aquatic toxicology ; behavioral effects ; histopathology ; freshwater crayfish
刊名: INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
发表日期: 2018-05-01
DOI: 10.3390/ijerph15050984
卷: 15, 期:5
收录类别: SCI ; SSCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences ; Public, Environmental & Occupational Health
研究领域[WOS]: Environmental Sciences & Ecology ; Public, Environmental & Occupational Health
英文摘要: This study aims to evaluate the acute toxicity of pymetrozine to juvenile Procambarus clarkii. Two 96-h toxicity tests were conducted to assess the lethal concentration 50 (LC50) values, behaviors, and histopathology (at 50% of the 96 h LC50) after pymetrozine exposure. The results showed high toxicity of pymetrozine to juvenile P. clarkii in a dose and time dependent manner, with a decreasing LC50 from 1.034 mg/L at 24 h to 0.479 mg/L at 96 h. The maximum allowable concentration (MAC) of pymetrozine for P. clarkii was 0.106 mg/L. Behavioral abnormalities were observed in pymetrozine-treated crayfish, such as incunabular hyperexcitability, subsequent disequilibrium, lethargy, and increased defecation. Significant lesions were observed in all pymetrozine-treated tissues, including: (1) in gill, hemocytic infiltration and 33.27% of epithelial cells lesions; (2) in perigastric organs, 64.37%, 29.06%, and 13.99% of tubules with lumen atrophy, vacuolation, and cell lysis, respectively; (3) in heart, 2.5%, 8.55% and 7.74% of hemocytic infiltration, vacuolization, and hyperplasia, respectively; (4) in stomach, 80.82%, 17.77%, 6.98%, 5.24% of cuticula swelling, vacuolization, muscle fragmentation, hemocytic infiltration, respectively; (5) in midgut, 7.45%, 10.98%, 6.74%, and 13.6% of hyperplasia, tissue lysis and vacuolation, hemocytic infiltration, muscle fracture; and (6) in abdominal muscle, 14.09% of myofiber fracture and lysis. This research demonstrates that pymetrozine is highly toxic to juvenile P. clarkii, with significant effects on mortality, behavior and histopathology at concentrations of 1.1 mg/L, while the estimated practical concentration of pymetrozine in rice-crayfish culture water was around 20 times lower than the calculated MAC.
关键词[WOS]: EXPOSURE ; ENDOSULFAN ; RESPONSES ; SURVIVAL ; PRAWN ; HISTOPATHOLOGY ; ACCUMULATION ; HERBICIDE ; EMBRYOS ; GILLS
语种: 英语
项目资助者: Special Fund for Agro-scientific Research in the Public Interest(201203081) ; R & D Project of the Ministry of Science and Technology of China(2015BAD13B02) ; Special Project of Science and Technology Department of Hubei Province(2016ABA123)
WOS记录号: WOS:000435197300152
ISSN号: 1660-4601
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/55837
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, 7 South Donghu Rd, Wuhan 430072, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China
3.McGill Univ, Dept Chem Engn, Montreal, PQ H3A 0C5, Canada
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