Mortality and repellent effects of coffee extracts on the workers of three household ant species

Yeoh Xue Li, . and Hamady Dieng, . and Abdul Hafiz Ab Majid, . Mortality and repellent effects of coffee extracts on the workers of three household ant species. pp. 1557-1586. ISSN 1511-3701

Coffee consists of a variety of chemical compounds that has not been documented to have resistance on insects. Hence this research was conducted to study the impact of coffee extracts impregnated in gel bait towards survival and feeding behaviour of Tapinoma indicum (ghost ant) Pheidole megacephala (big-headed ant) and Monomorium pharaonis (Pharaoh ant) (Hymenoptera: Formicidae). The three coffee species used were Coffea arabica Coffea canephora and Coffea liberica. The coffee extracts were obtained using Soxhlet extraction method diluted to 0.01 0.05 and 0.10 concentration and eventually impregnated into two sets of gel bait at with the first set (Set I) sugar solution and the second set (Set II) with distilled water. The overall results indicated that Coffea arabica gave highest mortality on all three ant species and higher concentration of extracts showed higher ant mortality in most bioassays. The higher mortality in lower concentration bioassays was probably due to their lower repellency percentages. Furthermore Set I bioassays had higher mortality as the sugar used act as food attractant. T. indicum was the most susceptible species. Owing to the low mortality the low concentration of coffee used was not effective in killing household ants but it did repel them.

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Abstract

Coffee consists of a variety of chemical compounds that has not been documented to have resistance on insects. Hence this research was conducted to study the impact of coffee extracts impregnated in gel bait towards survival and feeding behaviour of Tapinoma indicum (ghost ant) Pheidole megacephala (big-headed ant) and Monomorium pharaonis (Pharaoh ant) (Hymenoptera: Formicidae). The three coffee species used were Coffea arabica Coffea canephora and Coffea liberica. The coffee extracts were obtained using Soxhlet extraction method diluted to 0.01 0.05 and 0.10 concentration and eventually impregnated into two sets of gel bait at with the first set (Set I) sugar solution and the second set (Set II) with distilled water. The overall results indicated that Coffea arabica gave highest mortality on all three ant species and higher concentration of extracts showed higher ant mortality in most bioassays. The higher mortality in lower concentration bioassays was probably due to their lower repellency percentages. Furthermore Set I bioassays had higher mortality as the sugar used act as food attractant. T. indicum was the most susceptible species. Owing to the low mortality the low concentration of coffee used was not effective in killing household ants but it did repel them.

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Item Type:	Article
AGROVOC Term:	Coffee
AGROVOC Term:	Coffea arabica
AGROVOC Term:	Coffea canephora
AGROVOC Term:	Coffea liberica
AGROVOC Term:	Extraction
AGROVOC Term:	Ants
AGROVOC Term:	Pheidole megacephala
AGROVOC Term:	Monomorium
AGROVOC Term:	Hymenoptera
AGROVOC Term:	Formicidae
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:29
URI:	http://webagris.upm.edu.my/id/eprint/24736

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