The status of Oryctes rhinoceros Nudivirus (OrNV) infection in Oryctes rhinoceros (Coleoptera: Scarabaeidae) in Indonesia

Dadang, . and Kusumah Yayi Munara, . and Santoso Teguh, . and Rahayuwati Sat, . and Prawirosukarto Sudharto, . The status of Oryctes rhinoceros Nudivirus (OrNV) infection in Oryctes rhinoceros (Coleoptera: Scarabaeidae) in Indonesia. pp. 582-589. ISSN 1511-2780

Oryctes rhinoceros is a major problem on oil palm in Indonesia especially during replanting. Oryctes rhinoceros Nudivirus (OrNV) is a virus that infects both larvae and adults of O. rhinoceros. An extensive survey of OrNV infection on O. rhinoceros in Indonesia has not been conducted. The objective of the research is to identify the rate of OrNV infection in its host from various sampling sites in Indonesia. Adults and larvae of O. rhinoceros were collected from Sumatra Belitung Java Kalimantan and Sulawesi. Infected larvae were determined by their physical character i.e. prolapsed rectum while infected adults were determined by dissection to observe the swollen midguts. The incidence of OrNV infection in larvae was difficult to estimate as only 11 out of 417 larvae showed prominent symptoms. OrNV infection rates in adults O. rhinoceros in oil palm plantations in Sumatra Belitung and Kalimantan were between 64 and 90 and female O. rhinoceros could still produce eggs even when they were infected by OrNV. In Sulawesi and Java which are not major oil palm plantation centres OrNV infection rates were below 16. It is suspected that most of the O. rhinoceros population from areas intensively cultivated with oil palm is persistently or latently infected by OrNV and the beetles remain fertile.

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Abstract

Oryctes rhinoceros is a major problem on oil palm in Indonesia especially during replanting. Oryctes rhinoceros Nudivirus (OrNV) is a virus that infects both larvae and adults of O. rhinoceros. An extensive survey of OrNV infection on O. rhinoceros in Indonesia has not been conducted. The objective of the research is to identify the rate of OrNV infection in its host from various sampling sites in Indonesia. Adults and larvae of O. rhinoceros were collected from Sumatra Belitung Java Kalimantan and Sulawesi. Infected larvae were determined by their physical character i.e. prolapsed rectum while infected adults were determined by dissection to observe the swollen midguts. The incidence of OrNV infection in larvae was difficult to estimate as only 11 out of 417 larvae showed prominent symptoms. OrNV infection rates in adults O. rhinoceros in oil palm plantations in Sumatra Belitung and Kalimantan were between 64 and 90 and female O. rhinoceros could still produce eggs even when they were infected by OrNV. In Sulawesi and Java which are not major oil palm plantation centres OrNV infection rates were below 16. It is suspected that most of the O. rhinoceros population from areas intensively cultivated with oil palm is persistently or latently infected by OrNV and the beetles remain fertile.

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Item Type:	Article
AGROVOC Term:	Oryctes rhinoceros
AGROVOC Term:	Coleoptera
AGROVOC Term:	Scarabaeidae
AGROVOC Term:	Infection
AGROVOC Term:	Plant viruses
AGROVOC Term:	Pests of plants
AGROVOC Term:	Plant cultivation
AGROVOC Term:	Replanting
AGROVOC Term:	Larvae
AGROVOC Term:	Biological control agents
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:55
URI:	http://webagris.upm.edu.my/id/eprint/9509

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