Effect of nootkatone on the in vitro mortality of the ticks Rhipicephalus microplus and Amblyomma sculptum (Acari: Ixodidae)

IF 0.9 3区农林科学 Q3 ENTOMOLOGY

International Journal of Acarology Pub Date : 2023-02-17 DOI:10.1080/01647954.2023.2204094

Leandro de Oliveira Souza Higa, J. Amick, M. Garcia, R. Andreotti

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引用次数: 0

Abstract

ABSTRACT In Brazil, two tick species are mainly involved in public health and livestock issues: Amblyomma sculptum and Rhipicephalus microplus, respectively. Nootkatone, a sesquiterpenoid isolated from Chamaecyparis nootkatensis, has been described in the literature as an environmentally friendly alternative method of control, with repellent and toxic action against different insect and tick species from the Northern Hemisphere. The objective of the present study was to evaluate the effect of nootkatone on the in vitro mortality of R. microplus and A. sculptum. Different dilutions of nootkatone (0.5, 1, 2, 5 and 10%) were used on instars of both tick species. In A. sculptum engorged larvae, unfed nymphs, and unfed adults, 2% nootkatone resulted in 95% mortality in almost all tests. An in vitro mortality rate of 95% was observed for larvae and engorged females of R. microplus with 1% and 0.5% nootkatone, respectively. Additionally, 5% and 10% nootkatone were at least 97% effective against engorged larvae, unfed nymphs, and unfed adults of A. sculptum and larvae and engorged females of R. microplus. This was the first study to use nootkatone against ticks from Brazil and the data suggest that nootkatone has great potential as a tool for tick control.

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诺卡酮对小鼻头蜱和雕刻无足蜱体外死亡率的影响

在巴西，两种蜱类主要涉及公共卫生和牲畜问题:雕刻无眼蜱和微型鼻头蜱。Nootkatone是一种从nootkatensis中分离出来的倍半萜类物质，在文献中被描述为一种环境友好的替代控制方法，对来自北半球的不同昆虫和蜱虫具有驱避和毒性作用。本研究的目的是评价诺卡酮对小叶田鼠和雕花田鼠体外死亡率的影响。不同浓度的诺卡酮(0.5、1、2、5和10%)分别用于两种蜱的龄期。在几乎所有的试验中，在饱食的石雕夜蛾幼虫、未喂食的若虫和未喂食的成虫中，2%的诺卡酮导致95%的死亡率。用1%和0.5%的诺卡酮处理后，幼体和膨大雌体的体外死亡率分别为95%。另外，5%和10%的诺卡酮对石雕田鼠的饱食幼虫、未食若虫和未食成虫以及微加田鼠的幼虫和饱食雌虫的有效率至少为97%。这是第一个使用努卡酮对抗巴西蜱虫的研究，数据表明，努卡酮作为蜱虫控制工具具有很大的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Acarology 生物-昆虫学

CiteScore

2.20

自引率

9.10%

发文量

审稿时长

6-12 weeks

期刊介绍： The International Journal of Acarology has a global readership and publishes original research and review papers on a wide variety of acarological subjects including: • mite and tick behavior • biochemistry • biology • control • ecology • evolution • morphology • physiology • systematics • taxonomy (single species descriptions are discouraged unless accompanied by additional new information on ecology, biology, systematics, etc.) All submitted manuscripts are subject to initial appraisal by the Editor. If the English is not of a quality suitable for reviewers, the manuscript will be returned. If found suitable for further consideration, it will be submitted to peer review by independent, anonymous expert referees. All peer review is single blind.