Relationship between Metisa plana and its parasitoids (braconidae and ichneumonidae) at different time-lags in oil palm plantation
Bagworm or Metisa plana, is the most important defoliator insect in the oil palm cultivation, while parasitoids such as Braconidae and Ichneumonidae are the common main natural enemies for bagworm. Although the relationship between natural enemies with its insect pest has been broadly investig...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Pusat Sistematik Serangga, Universiti Kebangsaan Malaysia
2021
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| Online Access: | http://journalarticle.ukm.my/16578/1/43251-152817-1-PB.pdf http://journalarticle.ukm.my/16578/ https://ejournal.ukm.my/serangga/issue/view/1388/showToc |
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| Summary: | Bagworm or Metisa plana, is the most important defoliator insect in the oil palm cultivation,
while parasitoids such as Braconidae and Ichneumonidae are the common main natural
enemies for bagworm. Although the relationship between natural enemies with its insect pest
has been broadly investigated, little is dedicated for assessing the delayed effects of the
bagworm population on parasitoids. In this study, the abundance relationship between
bagworm and its common parasitoids (Braconidae and Ichneumonidae) was assessed at
different time-lags under field condition. Bagworm censuses for instar stages first (L1) to seven
(L7) were conducted biweekly in an oil palm plantation belongs to TH Plantation Berhad in
Muadzam Shah, Pahang from July 2016 to July 2017, along with bagworm’s parasitoid from
Braconidae and Ichneumonidae family. The results revealed that Braconidae presence was
associated positively with bagworm at week 6 to 12, whereby the associations were stronger
for late instar stages. On the other hand, Ichneumonidae presence was positively related to
middle instar stages at early time-lag i.e. week 2 to 6. In other words, Ichneumonidae
population is expected to increase after 2 to 6 weeks given increasing population of bagworm,
while Braconidae population is likely to rise after 6 to 12 weeks of the increasing population
of bagworm. |
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