Acute, Lethal and Synergistic Effects of Some Terpenes Against Tribolium castaneum Herbst (Coleoptera: Tenebrionidae)
Terpenes are found in abundance in all plant essential oils. In the present study two pure volatile compounds of terpene group, α-pinene and β-caryophyllene have been evaluated for their repellent, acute toxicity and developmental inhibitory activities alone and in binary combination against red flo...
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Union of Scientists in Bulgaria
2012-07-01
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Online Access: | http://web.uni-plovdiv.bg/mollov/EB/2012/eb.12105.pdf |
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doaj-79df10d6322f4322960d6f24b34c47142021-02-02T00:03:16ZengUnion of Scientists in BulgariaEcologia Balkanica1313-99402012-07-01415362Acute, Lethal and Synergistic Effects of Some Terpenes Against Tribolium castaneum Herbst (Coleoptera: Tenebrionidae)M. K. ChaubeyTerpenes are found in abundance in all plant essential oils. In the present study two pure volatile compounds of terpene group, α-pinene and β-caryophyllene have been evaluated for their repellent, acute toxicity and developmental inhibitory activities alone and in binary combination against red flour beetle Tribolium castaneum. In repellency assay, α-pinene and β-caryophyllene repelled T. castaneum adults significantly even at 0.025% concentrations. Fumigation of larvae and adults of T. castaneum with these two compounds caused lethality in them. Median lethal concentrations (LC50) of α-pinene and β-caryophyllene against adults were 0.998 and 1.624 μl/cm3 and against larvae were 1.379 and 1.949 μl/cm3 respectively. In binary combination, the LC50 values against adults and larvae were found 1.277 and 1.438 μl/cm3 respectively. Fumigation with two sublethal concentrations viz. 40 and 80% of 24-h LC50 of these two compunds alone and in binary combination significantly reduced oviposition potential of adults and inhibited pupation and adult emergence in larvae. All the responses were found concentration-dependent. From the present study, it can be concluded that α-pinene is more active than β-caryophyllene and these two volatile compounds in binary combination shows synergism and thus, can used as efficient insecticidal tool against T. castaneum as fumigant either alone or in combination.http://web.uni-plovdiv.bg/mollov/EB/2012/eb.12105.pdfα-Pineneβ-CaryophylleneTribolium castaneumFumigant toxicityTerpenes |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
M. K. Chaubey |
spellingShingle |
M. K. Chaubey Acute, Lethal and Synergistic Effects of Some Terpenes Against Tribolium castaneum Herbst (Coleoptera: Tenebrionidae) Ecologia Balkanica α-Pinene β-Caryophyllene Tribolium castaneum Fumigant toxicity Terpenes |
author_facet |
M. K. Chaubey |
author_sort |
M. K. Chaubey |
title |
Acute, Lethal and Synergistic Effects of Some Terpenes Against Tribolium castaneum Herbst (Coleoptera: Tenebrionidae) |
title_short |
Acute, Lethal and Synergistic Effects of Some Terpenes Against Tribolium castaneum Herbst (Coleoptera: Tenebrionidae) |
title_full |
Acute, Lethal and Synergistic Effects of Some Terpenes Against Tribolium castaneum Herbst (Coleoptera: Tenebrionidae) |
title_fullStr |
Acute, Lethal and Synergistic Effects of Some Terpenes Against Tribolium castaneum Herbst (Coleoptera: Tenebrionidae) |
title_full_unstemmed |
Acute, Lethal and Synergistic Effects of Some Terpenes Against Tribolium castaneum Herbst (Coleoptera: Tenebrionidae) |
title_sort |
acute, lethal and synergistic effects of some terpenes against tribolium castaneum herbst (coleoptera: tenebrionidae) |
publisher |
Union of Scientists in Bulgaria |
series |
Ecologia Balkanica |
issn |
1313-9940 |
publishDate |
2012-07-01 |
description |
Terpenes are found in abundance in all plant essential oils. In the present study two pure volatile compounds of terpene group, α-pinene and β-caryophyllene have been evaluated for their repellent, acute toxicity and developmental inhibitory activities alone and in binary combination against red flour beetle Tribolium castaneum. In repellency assay, α-pinene and β-caryophyllene repelled T. castaneum adults significantly even at 0.025% concentrations. Fumigation of larvae and adults of T. castaneum with these two compounds caused lethality in them. Median lethal concentrations (LC50) of α-pinene and β-caryophyllene against adults were 0.998 and 1.624 μl/cm3 and against larvae were 1.379 and 1.949 μl/cm3 respectively. In binary combination, the LC50 values against adults and larvae were found 1.277 and 1.438 μl/cm3 respectively. Fumigation with two sublethal concentrations viz. 40 and 80% of 24-h LC50 of these two compunds alone and in binary combination significantly reduced oviposition potential of adults and inhibited pupation and adult emergence in larvae. All the responses were found concentration-dependent. From the present study, it can be concluded that α-pinene is more active than β-caryophyllene and these two volatile compounds in binary combination shows synergism and thus, can used as efficient insecticidal tool against T. castaneum as fumigant either alone or in combination. |
topic |
α-Pinene β-Caryophyllene Tribolium castaneum Fumigant toxicity Terpenes |
url |
http://web.uni-plovdiv.bg/mollov/EB/2012/eb.12105.pdf |
work_keys_str_mv |
AT mkchaubey acutelethalandsynergisticeffectsofsometerpenesagainsttriboliumcastaneumherbstcoleopteratenebrionidae |
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