scholarly journals Repellent and Toxicant Effects of Eight Essential Oils against the Red Flour Beetle, Tribolium castaneum Herbst (Coleoptera: Tenebrionidae)

Biology ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 3
Author(s):  
El-Said M. Elnabawy ◽  
Sabry Hassan ◽  
El-Kazafy A. Taha

This study was conducted to compare the repellent effect and contact toxicity of eight essential oils (EOs), including Syzygium aromaticum, Allium sativum, Eucalyptus camaldulensis, Lavandula officinalis, Simmondsia chinensis, Matricaria chamomilla, Citrus limon, and Prunus dulcis, against adults of Tribolium castaneum Herbst. Four concentrations (1, 5, 10, and 15% in acetone solvent) of each EO were tested. The 5, 10, and 15% concentrations of S. aromaticum EO had a high repellency effect against T. castaneum compared with A. sativum, E. camaldulensis, L. officinalis, S. chinensis, M. chamomilla, C. limon, and P. dulcis after 30 min of exposure. The repellency test of the S. aromaticum, E. camaldulensis, L. officinalis, M. chamomilla, C. limon, and P. dulcis EOs on T. castaneum has shown that the mortality percentages enhanced with the increase in the EOs concentration and also with the exposure time. The 15% concentration of P. dulcis and M. chamomilla EOs have a significant impact on the mortality rate of T. castaneum compared with S. aromaticum, A. sativum, E. camaldulensis, L. officinalis, and S. chinensis after the 24 h of contact test. Moreover, the 15% concentration of the C. limon EO caused a greater mortality percentage compared with S. aromaticum, A. sativum, E. camaldulensis, and L. officinalis. It could be concluded that using the S. aromaticum EO as a repellent oil and using P. dulcis, M. chamomilla, and C. limon for contact toxicity to treat the flour infested by T. castaneum can play an important role in protecting stored grains and their products.

2011 ◽  
Vol 6 (6) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Lilian R. Descamps ◽  
Carolina Sánchez Chopa ◽  
Adriana A. Ferrero

Essential oils extracted from leaves and fruits of Schinus areira (Anacardiaceae) were tested for their repellent, toxic and feeding deterrent properties against Tribolium castaneum (Coleoptera: Tenebrionidae) larvae and adults. A topical application assay was employed for the contact toxicity study and filter paper impregnation for the fumigant assay. A treated diet was also used to evaluate the repellent activity and a flour disk bioassay for the feeding deterrent action and nutritional index alteration. The essential oil of the leaves contained mainly monoterpenoids, with α-phellandrene, 3-carene and camphene predominant, whereas that from the fruits contained mainly α-phellandrene, 3-carene and β-myrcene. The leaf essential oil showed repellent effects, whereas that from the fruit was an attractant. Both oils produced mortality against larvae in topical and fumigant bioassays, but fumigant toxicity was not found against adults. Moreover, both essential oils produced some alterations in nutritional index. These results show that the essential oils from S. areira could be applicable to the management of populations of Tribolium castaneum.


1970 ◽  
Vol 14 ◽  
pp. 43-48 ◽  
Author(s):  
Mina Mondal

Contact and fumigant toxicity of the three essential oils, viz., cardamom (Elletaria cardamomum Maton), Cinnamon (Cinnamomum aromaticum Nees), and Clove (Syzygium aromaticum (L.) Merr. and Petry) were tested against the red flour beetle, Tribolium castaneum (Herbst) larvae and adults. Residual film bioassay was employed in Petri dish (5 cm dia.) for contact toxicity studies and 6cm × 1.8cm glass vials were used for testing fumigation actions. Three day old adults and 10- day old larvae were equally susceptible to the contact toxicity of cinnamon oil, with LD50 values of 0.074 and 0.196 mg cm-2 respectively. Cardamom oil provided higher toxicity to 14-day and 18- day old larvae having LD50 value of 0.10mg cm-2. In fumigation bioassay cinnamon oil provided the highest toxicity to adult and 10-, 14-, and 18-day old larvae, with LD50 values of 0.03, 0.05, 0.088 and 0.09 mg cm-3 respectively. Furthermore, 10-day old larvae were more tolerant than the adults to the contact toxicity of the essential oils, but 14- day old larvae had the same susceptibility as the adults. In contact and fumigation toxicity adults and all stages of larvae were more resistant to clove oil. Key words: Bioassay; cardamom; clove; toxicity; essential oil J. bio-sci. 14: 1-9, 2006


2016 ◽  
Vol 5 (01) ◽  
pp. 4742
Author(s):  
Mumtaz Akhtar ◽  
Naheed Akhtar* ◽  
Muhammad Arshad ◽  
Naima Iram ◽  
Muhammad Iqbal ◽  
...  

Research studies were carried out to evaluate insecticidal action of two plant products and a synthetic insecticide on a major stored-product insect, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae). The plant species studied were, Piper nigrum and Eucalyptus camaldulensis, whereas methoprene used as synthetic insecticide. Two formulations viz., powder and ethanol extract of each plant and four concentrations (5ppm, 10ppm, 15ppm and 20 ppm) of methoprene were tested. Repellency was tested using the filter paper test whereas mortality, weight loss protection and anti-feedant potential of all treatments was evaluated by using whole maize grains. Our results were highly significant as compared to control however; P. nigrum was more effective as compared to E. camaldulensis. The investigation of cumulative effects of botanical and synthetic insecticide and isolation of active ingredients of botanicals are further issues to be investigated for their inclusion in. I. P. M programs.


Author(s):  
Shanshan Gao ◽  
Haidi Sun ◽  
Jiahao Zhang ◽  
Yonglei Zhang ◽  
Peipei Sun ◽  
...  

Abstract Uridine diphosphate glucosyltransferases (UGTs), which are phase II detoxification enzymes, are found in various organisms. These enzymes play an important role in the detoxification mechanisms of plant allelopathy and in insects. Artemisia vulgaris L. (Asterales: Asteraceae: Artemisia) essential oil has strong contact toxicity to Tribolium castaneum Herbst (Coleoptera: Tenebrionidae) larvae. However, the effect of A. vulgaris essential oil on UGTs is unclear. In this study, A. vulgaris essential oil was shown to significantly induce the expression of the TcUgt86Dg transcript. Furthermore, treatment of TcUgt86Dg-silenced individuals with A. vulgaris essential oil resulted in higher mortality than for the control individuals, indicating that TcUgt86Dg is involved in detoxification of A. vulgaris essential oil in T. castaneum. The developmental expression profile showed that the expression of TcUgt86Dg in late adults was higher than in other developmental stages. Furthermore, the expression profile in adult tissues revealed higher expression of TcUgt86Dg in the head, antenna, fat body, and accessory gland than in other tissues. These data show that TcUgt86Dg may be involved in the metabolism of exogenous toxins by T. castaneum; thus, our results have elucidated one possible mechanism of resistance to A. vulgaris essential oil and provide a theoretical basis for a control scheme for T. castaneum.


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