A review of recent sampling and ecological studies on bagworms (Lepidoptera: Psychidae) in commercial plantations of oil palm

Rhainds M., . A review of recent sampling and ecological studies on bagworms (Lepidoptera: Psychidae) in commercial plantations of oil palm. pp. 9-14. ISSN 0126-575X

This paper reviews the life history of bagworms (Lepidoptera:Psychidae) with a particular emphasis on sampling and ecological studies I conducted with Oiketicus kirbyi (Guilding) and Metisa plana (Walker) in commercial plantations of oil palm in Costa Rica Indonesia and Malaysia. In comparison with M. plana O. kirbyi is a relatively large bagworm with wider range of host plants greater feeding requirement and higher fecundity. Neonate M.plana commonly remain on the same palm where they emerged. Incidence of dispersal by M.plana larvae increases with increasing population density which may contribute to spread outbreak conditions. Sex-ratio of O. kirbyi and M.plana pupae varies within the crown of oil palm with females being proportionately more abundant than males on upper leaves. Size attained at pupation by M.plana female larvae decreases with increasing population density. For both O. kirbyi and M.plana females emerge before males significant proportions of females do not mate as adults and large females have greater mating success and fecundity. The sex pheromone of O.kirbyi has been identified as a blend of four chiral esters; identification of M. plana pheromone is currently underway but funding is needed to complete the project. Life history traits of bagworms suggests excellent potential for developing pheromone-based mating disruption or mass trapping as management tool.

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Abstract

This paper reviews the life history of bagworms (Lepidoptera:Psychidae) with a particular emphasis on sampling and ecological studies I conducted with Oiketicus kirbyi (Guilding) and Metisa plana (Walker) in commercial plantations of oil palm in Costa Rica Indonesia and Malaysia. In comparison with M. plana O. kirbyi is a relatively large bagworm with wider range of host plants greater feeding requirement and higher fecundity. Neonate M.plana commonly remain on the same palm where they emerged. Incidence of dispersal by M.plana larvae increases with increasing population density which may contribute to spread outbreak conditions. Sex-ratio of O. kirbyi and M.plana pupae varies within the crown of oil palm with females being proportionately more abundant than males on upper leaves. Size attained at pupation by M.plana female larvae decreases with increasing population density. For both O. kirbyi and M.plana females emerge before males significant proportions of females do not mate as adults and large females have greater mating success and fecundity. The sex pheromone of O.kirbyi has been identified as a blend of four chiral esters; identification of M. plana pheromone is currently underway but funding is needed to complete the project. Life history traits of bagworms suggests excellent potential for developing pheromone-based mating disruption or mass trapping as management tool.

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Item Type:	Article
Additional Information:	Summary (En)
AGROVOC Term:	LEPIDOPTERA
AGROVOC Term:	PSYCHIDAE
AGROVOC Term:	LIFE CYCLE
AGROVOC Term:	ECOLOGY
AGROVOC Term:	SAMPLING
AGROVOC Term:	LARVAE
AGROVOC Term:	POPULATION DENSITY
AGROVOC Term:	OIL PALMS
AGROVOC Term:	PLANTATIONS
AGROVOC Term:	EPIDEMICS
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:52
URI:	http://webagris.upm.edu.my/id/eprint/17843

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