Chemical composition and the insecticidal activity of certain plants applied as powders and essential oils against two stored-products coleopteran beetles

Abstract

Powders and essential oils were prepared from the aerial parts of Cinnamomum camphora, Ocimum basilicum, Chenopodium ambrosioides, and seeds of Pimpinella anisum. Their adulticidal activities and effects on the F 1 progeny of Trogoderma granarium (Everts) and Tribolium castaneum (Herbst) were evaluated. The chemical composition of the plant oils were identified by gas chromatography (GC) and GC/mass spectrometry (MS). All of the tested botanicals showed insecticidal activities against the test insects in a dose-dependent manner with T. granarium was more susceptible to the tested plant products than T. castaneum. At a concentration of 5 g kg -1 , many of the plant powders caused 100% mortality of both insects after 14 days of exposure. The powders of C. camphora, O. basilicum, and C. ambrosioides were effective against T. granarium, while that of C. ambrosioides caused 100% adult mortality of T. castaneum under the same assays conditions. A dose of 1.50 ml cm -2 of the oils of C. camphora and O. basilicum completely controlled T. granarium, while 100% mortality of T. castaneum adults was recorded with P. anisum oil. A significant and/or complete reduction (100% inhibition) of the F 1 progeny of both insects was obtained as a result of parental exposure to the tested botanicals, especially at the highest doses applied. Botanicals under investigation showed a considerable grain protecting activity against the tested insect species and could be included in integrated pest management (IPM) strategies.

The Chemical Composition of Essential Oils from Cinnamomum camphora and Their Insecticidal Activity against the Stored Product Pests

“…In previous works, powders and other parts of C. camphora essential oils have been evaluated for bioactivities against agricultural as well as stored product insects [12,13,14,17,18,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39]. The selected constituents also showed bioactivities and reflected the compositional complexity in bioactivity of natural mixtures [40].…”

“…In previous research, C. camphora extracts have shown many kinds of bioactivities against T. castaneum , such as the contact activity [12,13], the fumigant activity [14], the repellent activity [12,14], as well as progeny suppression [13,14]. However, those studies only tested the bioactivities of powders/essential oils from C. camphora aerial parts and seldom mentioned the bioactive compounds from them.…”

Chemical composition, insecticidal activity and persistence of three Asteraceae essential oils and their nanoemulsions against Callosobruchus maculatus (F.)

“…Essential oils from higher plants are among the most efficient alternative biorationals as pest control agents, especially against insects of stored grains (Koul et al, 2008;Regnault-Roger et al, 2012). In the literature, essential oils extracted from different plants showed a broad spectrum of activity against insects of stored grains, including C. maculatus; this includes ovicidal, larvicidal, adulticidal, antifeedant, repellent, and growth regulatory activities (K eita et al, 2000;Nenaah and Ibrahim, 2011;Mbata and Payton, 2013;Nenaah, 2014a;Vojoudi et al, 2014). However, the performance of most phytochemicals, including plant oils in crop protection, is inadequate for major practical use due to limitations associated with extraction, formulation and application problems.…”

Insecticidal properties of essential oils against Tribolium castaneum (Herbst) and their inhibitory effects on acetylcholinesterase and adenosine triphosphatases

“…The contact toxicity of A. monosperma and O. vulgare against the adults of T. castaneum was higher than that of Lantana camara, Majorana hortensis, Citrus reticulata Achillea santolina and Eucalyptus camaldulensis, but less than the contact toxicity of Mentha microphylla against the same insect (Mohamed & Abdelgaleil 2008). In addition, the contact toxicity of other essential oils has been described (Nenaah & Ibrahim 2011).…”