Field trapping of the adult red stripe weevil Rhynchophorus vulneratus Panzer with an aggregation pheromone in a coconut ecosystem.

A. Sivapragasam, . and Ahmad Ngalim, . and Razali B., . and Mohd Sani Sukaime, . (2010) Field trapping of the adult red stripe weevil Rhynchophorus vulneratus Panzer with an aggregation pheromone in a coconut ecosystem. [Proceedings Paper]

Studies were conducted to evaluate a commercially available male produced aggregation pheromone Ferrugi-on; 4-methyl-5-nonanol as a monitoring tool for the red stripe palm weevil RSPW Rhynchophorus vulneratus Panzer Coleoptera: Curculionidae in the coconut ecosystem. The study on pheromone placement comparing locating the traps at ground level with aerial trapping showed that the mean weekly weevil capture between the two techniques was not statistically significant F: 0.4955; P 0.4930. However catches were numerically higher in the ground trap mean S.D 3.25 3.77 compared to the aerial trap mean S.D. 2.25 1.39. Upon sexing of the weevils there were more females caught irrespective of location. The male: female ratio over the trapping period was 8:10 and 7: 19 respectively for the aerial and ground traps. Irrespective of sex trap catches peaked in week 3 in the ground trap whereas the aeial trap peaked a week later. Study on adding sugarcane as complementary bait showed the combination pheromone kairomone significantly enhanced trap catches. However sugarcane or water alone or their combination will not trap any weevil. The field trap data showed weevil catches were obtained almost every week suggesting the perennial presence of weevil. The pheromone traps caught a total 348 adults. The fluctuation in trap catches was significant with catches of more than 30 weevils recorded for some traps. The findings suggest aggregation pheromone trapping can be a useful monitoring tool for RSPW in Malaysia.

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Abstract

Studies were conducted to evaluate a commercially available male produced aggregation pheromone Ferrugi-on; 4-methyl-5-nonanol as a monitoring tool for the red stripe palm weevil RSPW Rhynchophorus vulneratus Panzer Coleoptera: Curculionidae in the coconut ecosystem. The study on pheromone placement comparing locating the traps at ground level with aerial trapping showed that the mean weekly weevil capture between the two techniques was not statistically significant F: 0.4955; P 0.4930. However catches were numerically higher in the ground trap mean S.D 3.25 3.77 compared to the aerial trap mean S.D. 2.25 1.39. Upon sexing of the weevils there were more females caught irrespective of location. The male: female ratio over the trapping period was 8:10 and 7: 19 respectively for the aerial and ground traps. Irrespective of sex trap catches peaked in week 3 in the ground trap whereas the aeial trap peaked a week later. Study on adding sugarcane as complementary bait showed the combination pheromone kairomone significantly enhanced trap catches. However sugarcane or water alone or their combination will not trap any weevil. The field trap data showed weevil catches were obtained almost every week suggesting the perennial presence of weevil. The pheromone traps caught a total 348 adults. The fluctuation in trap catches was significant with catches of more than 30 weevils recorded for some traps. The findings suggest aggregation pheromone trapping can be a useful monitoring tool for RSPW in Malaysia.

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Item Type:	Proceedings Paper
Additional Information:	Summary En
AGROVOC Term:	Weevils
AGROVOC Term:	Rhynchophorus
AGROVOC Term:	Pheromones
AGROVOC Term:	Coconuts
AGROVOC Term:	Ecosystems
AGROVOC Term:	Plant pests
AGROVOC Term:	Traps
AGROVOC Term:	Trapping baits
AGROVOC Term:	Sugarcane
AGROVOC Term:	field
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:14
URI:	http://webagris.upm.edu.my/id/eprint/11414

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