塞内加尔Persicaria senegalensis对南非纳他棱蜗牛及其棘口脱落尾蚴的杀螺和灭尾蚴作用

IF 1.1 4区 环境科学与生态学 Q3 MARINE & FRESHWATER BIOLOGY
M. Mathole, P. King
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引用次数: 0

摘要

塞内加尔Persicaria senegalensis是多边形科的一种水生植物,具有明显的杀螺特性。本研究评价了塞内加尔P.senegalensis对淡水蜗牛natalensis及其棘口脱落尾蚴的杀螺效果。对塞内加尔Persicaria senegalensis中的各种化合物进行了提取和定性分析。将纳他棱根和尾蚴暴露于不同浓度的塞内加尔P.egalensis提取物中,并分别测试24小时和3.5小时。叶、花和茎提取物中含有糖苷、皂苷、单宁和酚类物质。根中只含有皂苷,还含有微量的单宁和酚类物质。植物中没有萜类化合物。塞内加尔人参提取物对纳他棱线虫的LC50值分别为叶、花、茎和根的18.20±14.78、30.90±31.25、42.66±55.67和77.62±132.31。叶、花、茎和根提取物对纳他棱虫脱落尾蚴的LC50分别为20.89±8.91、30.90±22.10、42.66±40.94和77.62±93.62。受试生物体的死亡率随着浓度的增加而增加。结果表明,塞内加尔P.senegalensis提取物具有杀软体动物和杀尾蚴的特性;因此,作为淡水蜗牛及其尾蚴的替代生物防治剂,以及随后的其他蜗牛传播的寄生虫病,具有潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Molluscicidal and cercaricidal effects of Persicaria senegalensis on Radix natalensis snails and their echinostome-shed cercariae in South Africa
Persicaria senegalensis is an aquatic plant of the Family Polygonaceae with apparent molluscicidal properties. The research evaluated the molluscicidal effect of P. senegalensis on the freshwater snail Radix natalensis, and its echinostome-shed cercariae. Various compounds from Persicaria senegalensis were extracted and qualitatively analysed. Radix natalensis and the cercariae were exposed to different extract concentrations of P. senegalensis and tested for a period of 24 and 3.5 hours, respectively. Glycosides, saponins, tannins and phenols were found to be present in the leaf, flower and stem extracts. The roots only contained saponins, with traces of tannins and phenols. Terpenoids were absent in the plant. The LC50 values of P. senegalensis extracts against R. natalensis were determined at 18.20 ± 14.78, 30.90 ± 31.25, 42.66 ± 55.67 and 77.62 ± 132.31 for leaves, flowers, stems, and roots respectively. For the cercaricidal activities of leaf, flower, stem and root extracts, the LC50 values against R. natalensis-shed cercariae were 20.89 ± 8.91, 30.90 ± 22.10, 42.66 ± 40.94 and 77.62 ± 93.62, respectively. The mortality rate of tested organisms increased with increased concentrations. It is concluded that extracts of P. senegalensis have molluscicidal and cercaricidal properties; and, therefore, has potential as an alternative biological control agent for freshwater snails, their cercariae and, subsequently, other snail-transmitted parasitic diseases.
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来源期刊
African Journal of Aquatic Science
African Journal of Aquatic Science MARINE & FRESHWATER BIOLOGY-
CiteScore
3.90
自引率
7.10%
发文量
31
审稿时长
>12 weeks
期刊介绍: The African Journal of Aquatic Science is an international journal devoted to the study of the aquatic sciences, covering all African inland and estuarine waters. The Journal publishes peer-reviewed original scientific papers and short articles in all the aquatic science fields including limnology, hydrobiology, ecology, conservation, biomonitoring, management, water quality, ecotoxicology, biological interactions, physical properties and human impacts on African aquatic systems.
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