How to translate text using browser tools
20 January 2022 Toxicity and Repellency of Magnolia grandiflora Seed Essential Oil and Selected Pure Compounds Against the Workers of Hybrid Imported Fire Ants (Hymenoptera: Formicidae)
Abbas Ali, Jian Chen, Ikhlas A. Khan
Author Affiliations +
Abstract

We tested Magnolia grandiflora L. (Magnoliales: Magnoliaceae) seed essential oil and its pure compounds for their repellency and toxicity against workers of hybrid imported fire ants. Series of dosages were tested starting from 156 µg/g to the dose where the treatment failed. Workers removed significantly less sand from the vials with M. grandiflora seed essential oil and 1-octanol treated sand at serial dosages of 156–4.9 µg/g than the solvent control whereas the amount removed at 2.4–0.6 µg/g was similar to the solvent control. In 1-decanol treatments, workers removed significantly less sand at serial dosages of 156–0.15 µg/g than the solvent control whereas the removal of sand at the dose of 0.08 µg/g was similar to the solvent control. In DEET (N, N-diethyl-meta-toluamide) treatments, workers removed significantly less sand at serial dosages of 156–78 µg/g than the solvent control whereas the quantity of removed sand at 39 µg/g was similar to the solvent control. Based on the mean amount of sand removed, M. grandiflora essential oil, 1-decanol, and 1-octanol showed significantly higher repellency than DEET. 1-Decanol and 1-octanol, present in seed essential oil showed toxicity against fire ant workers. 1-Decanol with LC50 of 140.6 µg/g was the most toxic natural compound followed by 1-octanol (LC50 = 486.8 µg/g). Bifenthrin with LC50 value of 0.018 µg/g showed much higher toxicity than these natural compounds. High repellency and toxicity of 1-decanol makes it a natural compound of interest for further studies under field conditions.

© The Author(s) 2022. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
Abbas Ali, Jian Chen, and Ikhlas A. Khan "Toxicity and Repellency of Magnolia grandiflora Seed Essential Oil and Selected Pure Compounds Against the Workers of Hybrid Imported Fire Ants (Hymenoptera: Formicidae)," Journal of Economic Entomology 115(2), 412-416, (20 January 2022). https://doi.org/10.1093/jee/toab262
Received: 23 September 2021; Accepted: 7 December 2021; Published: 20 January 2022
JOURNAL ARTICLE
5 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

KEYWORDS
fire ant worker
Magnolia seed essential oil
repellency
toxicity
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top