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Larvicidal, Ovicidal, Synergistic, and Repellent Activities of Sophora alopecuroides and Its Dominant Constituents Against Aedes albopictus

In the current study, to combat insecticide resistance, we explored larvicidal, ovicidal, synergistic, and repellent activities of Sophora alopecuroides extract and its dominant constituents against Aedes albopictus. The results of the toxicity bioassays demonstrated that the extract of S. alopecuro...

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Autores principales: Shoukat, Rana Fartab, Shakeel, Muhammad, Rizvi, Syed Arif Hussain, Zafar, Junaid, Zhang, Yuxin, Freed, Shoaib, Xu, Xiaoxia, Jin, Fengliang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240748/
https://www.ncbi.nlm.nih.gov/pubmed/32326460
http://dx.doi.org/10.3390/insects11040246
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author Shoukat, Rana Fartab
Shakeel, Muhammad
Rizvi, Syed Arif Hussain
Zafar, Junaid
Zhang, Yuxin
Freed, Shoaib
Xu, Xiaoxia
Jin, Fengliang
author_facet Shoukat, Rana Fartab
Shakeel, Muhammad
Rizvi, Syed Arif Hussain
Zafar, Junaid
Zhang, Yuxin
Freed, Shoaib
Xu, Xiaoxia
Jin, Fengliang
author_sort Shoukat, Rana Fartab
collection PubMed
description In the current study, to combat insecticide resistance, we explored larvicidal, ovicidal, synergistic, and repellent activities of Sophora alopecuroides extract and its dominant constituents against Aedes albopictus. The results of the toxicity bioassays demonstrated that the extract of S. alopecuroides exerted significant larvicidal activity (16.66–86.66%) against the third-instar larvae of Ae. albopictus at different concentrations (5–50 ug/mL) and low hatchability of eggs (2.32–75%) at 5–50 ug/mL. The constituents of S. alopecuroides showed a synergistic effect when applied as a mixture (LC(30) + LC(30)) against larvae, while no synergistic effect was observed against the eggs of Ae. albopictus. S. alopecuroides extract provided 93.11% repellency in the first 90 min and gradually decreased to 53.14% after 240 min, while the positive control DEET (N,N-diethyl-3-methylbenzamide) showed 94.18% in the first 90 min and 55.33% after 240 min. All of the results exhibited a concentration-dependent effect. To the best of our knowledge, this is the first time that a study has identified a highly effective extract of S. alopecuroides, which could be used as an alternative agent to control larvae and eggs and to repel adults of Ae. albopictus.
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spelling pubmed-72407482020-06-11 Larvicidal, Ovicidal, Synergistic, and Repellent Activities of Sophora alopecuroides and Its Dominant Constituents Against Aedes albopictus Shoukat, Rana Fartab Shakeel, Muhammad Rizvi, Syed Arif Hussain Zafar, Junaid Zhang, Yuxin Freed, Shoaib Xu, Xiaoxia Jin, Fengliang Insects Article In the current study, to combat insecticide resistance, we explored larvicidal, ovicidal, synergistic, and repellent activities of Sophora alopecuroides extract and its dominant constituents against Aedes albopictus. The results of the toxicity bioassays demonstrated that the extract of S. alopecuroides exerted significant larvicidal activity (16.66–86.66%) against the third-instar larvae of Ae. albopictus at different concentrations (5–50 ug/mL) and low hatchability of eggs (2.32–75%) at 5–50 ug/mL. The constituents of S. alopecuroides showed a synergistic effect when applied as a mixture (LC(30) + LC(30)) against larvae, while no synergistic effect was observed against the eggs of Ae. albopictus. S. alopecuroides extract provided 93.11% repellency in the first 90 min and gradually decreased to 53.14% after 240 min, while the positive control DEET (N,N-diethyl-3-methylbenzamide) showed 94.18% in the first 90 min and 55.33% after 240 min. All of the results exhibited a concentration-dependent effect. To the best of our knowledge, this is the first time that a study has identified a highly effective extract of S. alopecuroides, which could be used as an alternative agent to control larvae and eggs and to repel adults of Ae. albopictus. MDPI 2020-04-15 /pmc/articles/PMC7240748/ /pubmed/32326460 http://dx.doi.org/10.3390/insects11040246 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Shoukat, Rana Fartab
Shakeel, Muhammad
Rizvi, Syed Arif Hussain
Zafar, Junaid
Zhang, Yuxin
Freed, Shoaib
Xu, Xiaoxia
Jin, Fengliang
Larvicidal, Ovicidal, Synergistic, and Repellent Activities of Sophora alopecuroides and Its Dominant Constituents Against Aedes albopictus
title Larvicidal, Ovicidal, Synergistic, and Repellent Activities of Sophora alopecuroides and Its Dominant Constituents Against Aedes albopictus
title_full Larvicidal, Ovicidal, Synergistic, and Repellent Activities of Sophora alopecuroides and Its Dominant Constituents Against Aedes albopictus
title_fullStr Larvicidal, Ovicidal, Synergistic, and Repellent Activities of Sophora alopecuroides and Its Dominant Constituents Against Aedes albopictus
title_full_unstemmed Larvicidal, Ovicidal, Synergistic, and Repellent Activities of Sophora alopecuroides and Its Dominant Constituents Against Aedes albopictus
title_short Larvicidal, Ovicidal, Synergistic, and Repellent Activities of Sophora alopecuroides and Its Dominant Constituents Against Aedes albopictus
title_sort larvicidal, ovicidal, synergistic, and repellent activities of sophora alopecuroides and its dominant constituents against aedes albopictus
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240748/
https://www.ncbi.nlm.nih.gov/pubmed/32326460
http://dx.doi.org/10.3390/insects11040246
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