Purpose: To determine larvicidal activity of the essential oil derived from Illicium henryi Diels (Illiciaceae) leaf and stem against the larvae of Aedes albopictus Skuse.
Methods: The essential oil of I. henryi leaves was obtained by hydrodistillation and analyzed by gas chromatography (GC) and gas chromaotography-mass spectrometry (GC-MS). The activity of the oil was evaluated, using World Health Organization (WHO) procedures, against the fourth instar larvae of A. albopictus for 24 h, and larval mortalities recorded at various essential oil concentrations
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