Insecticidal activities of leaf and twig essential oils from Clausena excavata against Aedes aegypti and Aedes albopictus larvae

Sen Sung Cheng, Hui Ting Chang, Chun Ya Lin, Pin Sheng Chen, Chin Gi Huang, Wei June Chen, Shang Tzen Chang*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

85 Scopus citations

Abstract

BACKGROUND: The current study investigates, for the first time, the mosquito larvicidal activities of leaf and twig essential oils from Clausena excavata Burm. f. and their individual constituents against Aedes aegypti L. and Aedes albopictus Skuse larvae. The yields of essential oils obtained from hydrodistillation were compared, and their constituents were determined by GC-MS analyses. RESULTS: The LC50 values of leaf and twig essential oils against fourth-instar larvae of Ae. aegypti and Ae. albopictus were 37.1-40.1 μgmL-1 and 41.1-41.2 μgmL-1 respectively. This study demonstrated that C. excavata leaf and twig essential oils possess mosquito larvicidal activity, inhibiting the growth of mosquito larvae for both species at a low concentration. In addition, results of larvicidal assays showed that the effective constituents in leaf and twig essential oils were limonene, γ -terpinene, terpinolene, β-myrcene, 3-carene and p-cymene. The LC50 values of these constituents against both mosquito larvae were below 50 μg mL-1. Among these effective constituents, limonene had the best mosquito larvicidal activity, with LC50 of 19.4 μg mL-1 and 15.0 μg mL-1 against Ae. aegypti and Ae. albopictus larvae respectively. CONCLUSION: The findings suggested that the essential oils from Clausena excavata leaf and twig and their effective constituents may be explored as a potential natural larvicide.

Original languageEnglish
Pages (from-to)339-343
Number of pages5
JournalPest Management Science
Volume65
Issue number3
DOIs
StatePublished - 03 2009

Keywords

  • Aedes aegypti
  • Aedes albopictus
  • Clausena excavata
  • Essential oil
  • Leaf

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