[Molluscicidal effect of spraying different formulations of niclosamide ethanolamine salt with drones against Oncomelania hupensis in ditches].

Q3 Medicine 中国血吸虫病防治杂志 Pub Date : 2024-09-19 DOI:10.16250/j.32.1374.2024003

Z Zhu, X Zhang, J He, Y Chen, W Wang, H Hu, C Cao, Z Bao, S Guo, L Duan, Y Yuan, J Xu, S Li, X Zhou

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引用次数: 0

Abstract

Objective: To evaluate the molluscicidal effect of spraying different formulations of niclosamide ethanolamine salt with drones against Oncomelania hupensis in ditches.

Methods: A semi-dry and semi-wet ditch with O. hupensis snails was selected in the second branch field of Jiangbei Farm, Jiangling County, Hubei Province in May 2023, and divided into 4 experimental areas, named groups A1, A2, B1 and B2. Environmental cleaning was performed in groups A1 and B2, and was not conducted in groups A2 or B2. Then, 50% wettable powder of niclosamide ethanolamine salt was sprayed with drones at an effective dose of 2 g/m² in groups A1 and A2, and 5% niclosamide ethanolamine salt granule was sprayed with drones at an effective dose of 2 g/m² in groups B1 and B2. O. hupensis snails were surveyed using the systematic sampling method 1, 3, 5, 7, 14 days after spraying, and the natural mortality and corrected mortality of O. hupensis snails were calculated.

Results: The occurrence of frames with living snails, mean density of living snails and natural mortality of snails were 97.50% (117/120), 6.30 snails/0.1 m² and 1.18% (9/765) in the test ditch before spraying, respectively. There were significant differences in the mortality of snails among four groups 1, 3, 5, 7 and 14 days after spraying niclosamide formulations with drones (χ² = 17.230, 51.707, 65.184, 204.050 and 34.435, all P values < 0.01). The overall mortality rates of snails were 94.51% (1 051/1 112), 79.44% (908/1 143), 96.54% (977/1 012) and 88.55% (1 021/1 153) in groups A1, A2, B1 and B2 (χ² = 207.773, P < 0.05), respectively. In addition, there was no significant difference in the overall snail mortality between groups A1 and B1 (P > 0.05), and the snail mortality in groups A1 and B1 were both statistically different from that in groups A2 and B2 (all P values < 0.05).

Conclusions: Both 50% wettlable powder of niclosamide ethanolamine salt and 5% niclosamide ethanolamine salt granule sprayed with drones are active against O. hupensis snails in ditches, and environmental cleaning may improve the molluscicidal effect.

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[不同配方氯硝柳胺乙醇胺盐无人机对沟渠钉螺的杀螺效果]。

目的：评价不同剂型氯硝柳胺乙醇胺盐用无人机对沟渠钉螺的杀螺效果。方法：于2023年5月在湖北省江陵县江北养殖场二分田选取一条半干半湿沟，共设4个试验区，分别命名为A1、A2、B1、B2组。A1组和B2组进行环境清洁，A2组和B2组不进行环境清洁。A1组和A2组分别以有效剂量2g /m2喷洒50%硝氯胺醇胺盐可湿性粉剂，B1组和B2组分别以有效剂量2g /m2喷洒5%硝氯胺醇胺盐颗粒。采用系统抽样法，在喷施后1、3、5、7、14 d对钉螺进行调查，计算钉螺自然死亡率和校正死亡率。结果：喷施前试验沟有活螺发生率为97.50%(117/120)，平均活螺密度为6.30只/0.1 m2，钉螺自然死亡率为1.18%（9/765）。无人机施药后1、3、5、7、14 d 4组钉螺死亡率差异均有统计学意义（χ2 = 17.230、51.707、65.184、204.050、34.435，P值均< 0.01）。A1、A2、B1、B2组钉螺总死亡率分别为94.51%（1 051/1 112）、79.44%（908/1 143）、96.54%（977/1 012）、88.55% (1 021/1 153)（χ2 = 207.773, P < 0.05）。此外，A1组与B1组钉螺总死亡率比较，差异无统计学意义（P < 0.05），且A1、B1组钉螺总死亡率与A2、B2组比较，差异均有统计学意义（P < 0.05）。结论：50%氯硝柳胺乙醇胺盐润湿粉剂和5%氯硝柳胺乙醇胺盐颗粒剂对沟渠钉螺均有良好的杀螺效果，环境清洁可提高杀螺效果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

中国血吸虫病防治杂志 Medicine-Medicine (all)

CiteScore

1.30

自引率

0.00%

发文量

7021

期刊介绍： Chinese Journal of Schistosomiasis Control (ISSN: 1005-6661, CN: 32-1374/R), founded in 1989, is a technical and scientific journal under the supervision of Jiangsu Provincial Health Commission and organised by Jiangsu Institute of Schistosomiasis Control. It is a scientific and technical journal under the supervision of Jiangsu Provincial Health Commission and sponsored by Jiangsu Institute of Schistosomiasis Prevention and Control. The journal carries out the policy of prevention-oriented, control-oriented, nationwide and grassroots, adheres to the tenet of scientific research service for the prevention and treatment of schistosomiasis and other parasitic diseases, and mainly publishes academic papers reflecting the latest achievements and dynamics of prevention and treatment of schistosomiasis and other parasitic diseases, scientific research and management, etc. The main columns are Guest Contributions, Experts‘ Commentary, Experts’ Perspectives, Experts' Forums, Theses, Prevention and Treatment Research, Experimental Research, The main columns include Guest Contributions, Expert Commentaries, Expert Perspectives, Expert Forums, Treatises, Prevention and Control Studies, Experimental Studies, Clinical Studies, Prevention and Control Experiences, Prevention and Control Management, Reviews, Case Reports, and Information, etc. The journal is a useful reference material for the professional and technical personnel of schistosomiasis and parasitic disease prevention and control research, management workers, and teachers and students of medical schools. 　　 The journal is now included in important domestic databases, such as Chinese Core List (8th edition), China Science Citation Database (Core Edition), China Science and Technology Core Journals (Statistical Source Journals), and is also included in MEDLINE/PubMed, Scopus, EBSCO, Chemical Abstract, Embase, Zoological Record, JSTChina, Ulrichsweb, Western Pacific Region Index Medicus, CABI and other international authoritative databases.