Insect growth regulators and semiochemicals: novel chemicals for insect pest management

Tan K .H ., . and Loke K . H ., . (1985) Insect growth regulators and semiochemicals: novel chemicals for insect pest management. [Proceedings Paper]

Many agricultural insect pest are damaging and destructive during their immature stages. Insect growth regulators IGRs-juvenile hormone and its analogues/mimics precocenes and chitin inhibators are potent compounds and physiological processes of moulting metamorphosis and reproduction in insects. The roles of these 'third and fourth generation' insecticides in disrupting insect growth and development and as components of integrated pest management programmes are discussed. Besides the interruption of insect growth and development the interference of insect behaviour and communication by semiochemicals provides a good strategy for insect pest control. Currently botanical and synthetic deterrants are of limited use in pest control. The same holds true for repellants which prevent insect pests from settling on treated areas. Pheromones and para-pheromones have great potential in insect pest management where they are used in pest surveillance and monitoring to time the judicious spraying of insecticides in affected areas. Attractants/sex pheromones are increasingly used for mass trapping of insect pests while sex disruptants/confusants may be economically and potentially useful in insect pest management. Besides the above intraspecific semiochemicals allelochemics interspecific chemicals are currently receiving increased attention in relation to behavioural manipulation of natural enemies particularly parasitoids. Chemical cues play a major role at almost every level in the host-finding process by releasing behavioral patterns that increase the probability of a parasitoid finding its host. Experimental results have shown that interspecific semio-chemicals such as kairomones can be exploited in various ways to enhance host-finding and parasitization/predation by redirecting an incorrect response of stimulating and sustaining the correct one. Such a pest control tactic is compatible with current pest management philosophies and fits well into an integrated pest management IPM scheme where biological control is a key component. The advantages and potential uses of IGRs and semio-chemicals against insects for crop protection are highlighted

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Abstract

Many agricultural insect pest are damaging and destructive during their immature stages. Insect growth regulators IGRs-juvenile hormone and its analogues/mimics precocenes and chitin inhibators are potent compounds and physiological processes of moulting metamorphosis and reproduction in insects. The roles of these 'third and fourth generation' insecticides in disrupting insect growth and development and as components of integrated pest management programmes are discussed. Besides the interruption of insect growth and development the interference of insect behaviour and communication by semiochemicals provides a good strategy for insect pest control. Currently botanical and synthetic deterrants are of limited use in pest control. The same holds true for repellants which prevent insect pests from settling on treated areas. Pheromones and para-pheromones have great potential in insect pest management where they are used in pest surveillance and monitoring to time the judicious spraying of insecticides in affected areas. Attractants/sex pheromones are increasingly used for mass trapping of insect pests while sex disruptants/confusants may be economically and potentially useful in insect pest management. Besides the above intraspecific semiochemicals allelochemics interspecific chemicals are currently receiving increased attention in relation to behavioural manipulation of natural enemies particularly parasitoids. Chemical cues play a major role at almost every level in the host-finding process by releasing behavioral patterns that increase the probability of a parasitoid finding its host. Experimental results have shown that interspecific semio-chemicals such as kairomones can be exploited in various ways to enhance host-finding and parasitization/predation by redirecting an incorrect response of stimulating and sustaining the correct one. Such a pest control tactic is compatible with current pest management philosophies and fits well into an integrated pest management IPM scheme where biological control is a key component. The advantages and potential uses of IGRs and semio-chemicals against insects for crop protection are highlighted

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Item Type:	Proceedings Paper
Additional Information:	9 tables; 114 ref. Summary En
AGROVOC Term:	INSECTOS DANINOS
AGROVOC Term:	CONTROL DE PLAGAS
AGROVOC Term:	CONTROL QUIMICO
AGROVOC Term:	INSECTICIDAS
AGROVOC Term:	FEROMONAS
AGROVOC Term:	CONTROL BIOLOGICO
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:25
URI:	http://webagris.upm.edu.my/id/eprint/14243

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