Potential Insecticidal Activity of some Medicinal Plants Essential Oils against Red Flour Beetle ,Tribolium castaneum (Herbst) (Coleoptera:Tenebrionidae).

Context: The essential oils are being tried as potential candidates for pest and disease management. Several essential oils of botanical origin have been reported for their repellant, toxic and developmental inhibitory activities. The ovicidal effect of essential oil is probably the major factor in the suppression of the development of adults from treated eggs.Objectives: To investigate the ovicidal effect of vapours of five essential oils viz., cardamom (Elletaria cardamomum L.), cinnamon (Cinnamomum zeylanicum Blume), clove (Sygium aromaticum L. Merrill. et. Perry), Eucalyptus spp. and neem (Azadirectica indica A. juss) against the eggs of red flour beetle, Tribolium castaneum (Herbst).Materials and Methods: Ten eggs (24 h old) of T. castaneum were placed in each petridish with wheat flour as food medium and without flour medium and then the petridish were kept inside 650 ml jars with screwed lids. Aliquots of 0.5 ml of each dose of essential oils were applied on filter paper attached to the lower side of the lids. The exposure periods were 24, 48, 72 and 96 h, respectively. After treatment periods, petridishes were taken out of the jars and the final mortality counts were made after 11 days. Mortality data were subjected to probit analysis. Results: The oils had high-fumigant activity against eggs and toxicity progressively increased with increase in exposure time and concentration. At the highest concentration of 5.769 mg/l air and exposure period of 24 h, cinnamon oil achieved 100% mortality in flour and without flour media. The vapours of essential oils from cardamom and clove resulted in 100% mortality of the eggs. Neem oil achieved mortalities as high as 51.66 and 50% mortality at the highest concentration and exposure period in with-flour and without flour medium respectively. At a concentration of 5.769 mg/ l air cardamom oil, the LT90 values were 50.80 and 62.78 h for with-flour and without flour medium respectively.Conclusion: The essential oils of cinnamon and clove, proved to be promising as control agents against stored-product insects, especially T. castaneum.Key words: Essential oil; Fumigant toxicity; Ovicidal activity; Tribolium castaneumDOI: 10.3329/jbs.v17i0.7102J. bio-sci. 17: 57-62, 2009

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Insecticidal Activity of Annona squamosa l. Seed Extracts against the Red Flour Beetle, Tribolium castaneum (Herbst)

Journal of Bio-Science ◽

10.3329/jbs.v14i0.453 ◽

1970 ◽

Vol 14 ◽

pp. 107-112 ◽

Cited By ~ 6

Author(s):

M Khalequzzaman ◽

Shajia Sultana

Keyword(s):

Tribolium Castaneum ◽

Insecticidal Activity ◽

Methanol Extract ◽

Red Flour Beetle ◽

Regression Equations ◽

Annona Squamosa ◽

Flour Beetle ◽

Custard Apple ◽

Larval Bioassay ◽

Seed Extracts

Insecticidal activity of the seed extracts of custard apple, Annona squamosa L. in petroleum spirit, ethyl acetate, acetone and methanol against Raj, CR 1, FSS II and CTC-12 strains of the red flour beetle, Tribolium castaneum (Herbst) was studied. The seeds were dried, powdered and extracted in Soxhlet`s apparatus in the solvents below 60°C. Extractions were applied on larvae and adult beetles in film residue methods and mortality was recorded after 24 h. For larval bioassay the highest toxicity was recorded for petroleum spirit extract (LD50= 0.03?g cm-2) in Raj strain and the lowest toxicity was for methanol extract (LD50=15.697?g cm-2) in FSS II strain. In adults petroleum spirit extract offered highest toxicity (LD50= 58.697?g cm-2) in CTC 12 strain and the lowest toxicity (LD50=22004.710?g cm-2) was for acetone extract in CR 1 strain. LD50, 95% confidence limits and regression equations are presented. Key words: Tribolium castaneum, Annona squamosa, custard apple, LD50 J. bio-sci. 14: 107-112, 2006

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Euphorbia bupleuroides Desf. latex as biopesticide against the red flour beetle (Tribolium castaneum [Herbst, 1797]) and khapra beetle (Trogoderma granarium Everts, 1898)

Acta agriculturae Slovenica ◽

10.14720/aas.2021.117.2.2029 ◽

2021 ◽

Vol 117 (2) ◽

pp. 1

Author(s):

Imene BRIK ◽

Naama FRAH

Keyword(s):

Ambient Temperature ◽

Tribolium Castaneum ◽

Insecticidal Activity ◽

Direct Contact ◽

The Other ◽

Red Flour Beetle ◽

Laboratory Evaluation ◽

Flour Beetle ◽

Trogoderma Granarium ◽

Khapra Beetle

<p>Laboratory evaluation of Euphorbia bupleuroides latex as biopesticide against the red flour beetle (Tribolium castaneum) and khapra beetle (Trogoderma granarium) were evaluated at ambient temperature. The insecticidal activity of latex was determined by direct contact application. Different concentrations were prepared by dilution of 2.5, 5.0, 7.0 and 10.0 µl of latex into 0.1 ml acetone. 1 µl was pumped regularly in the thorax of different insects. The latex of E. bupleuroides showed insecticidal activity against T. granarium and T. castaneum. High levels of mortality were associated with the increase in the concentration and time of exposure as well. T. granarium adults are generally more prone to latex insecticidal effects than T. castaneum adults. After 6 days of exposure to E. bupleuroides latex, the LC50 recorded was 14.12 µl for T. granarium adults, and 14.7 µl for T. castaneum. LC90 numbers, on the other hand, were 38.8 µl for the former, and 51.44 µl for the latter.</p>

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