Kesan Hujan, Bilangan Jambak Bunga Sawit Jantan dan Spikelet ke atas Kelimpahan Populasi Elaeidobius kamerunicus(Coleoptera

Curculionidae

Translated title of the contribution: Effects of Rainfall, Number of Male Inflorescences and Spikelets on the Population Abundance of Elaeidobius kamerunicus (Coleoptera: Curculionidae)

A. L. Nurul Fatihah, M. H. Muhamad Fahmi, H. A. Luqman, S. M.D. Syarifah Nadiah, T. M. Teo, Izfa Riza Hazmi, A. B. Idris

Research output: Contribution to journalArticle

Abstract

Elaeidobius kamerunicus was first introduced to Malaysia from Cameroon as an oil palm pollinator in 1981. Since then, oil palm pollination has improved and the need for assisted pollination has reduced. Fruit set development and fruit production also saw significant improvements, until a reported decline that began in the late 1980s. Several factors may have contributed to such decline, but most researchers believe it is due to the low E. kamerunicus population. Therefore, a study was conducted to determine whether the amount of rainfall and the number of male inflorescences and spikelets influenced the population abundance of E. kamerunicus in Ladang Lekir, Perak, Malaysia. Sampling was performed each month in oil palm subplots, three for each age of palm age, from October 2015 to September 2016. A total of nine spikelets (three from the top, middle and base of a male inflorescence) were randomly selected from each male inflorescence on each chosen palm. They were cut early in the morning to avoid the weevil’s most active time, thus making collection easier. The number of weevils congregating on each spikelet was then counted. The average number of E. kamerunicus per hectare (ha) living on oil palms aged four and six were 21,086 and 25,712, respectively. The amount of rainfall and the number of male inflorescences and spikelets were found to positively correlate with the E. kamerunicus population. The number of male inflorescences showed strong correlation with the E. kamerunicus population. However, in-depth study is needed to determine the relationship between E. kamerunicus and fruit set.

Original languageMalay
Pages (from-to)15-21
Number of pages7
JournalSains Malaysiana
Volume48
Issue number1
DOIs
Publication statusPublished - 1 Jan 2019

Fingerprint

Elaeidobius
Curculionidae
inflorescences
Coleoptera
rain
Elaeis guineensis
fruit set
Malaysia
pollination
pollinating insects
Cameroon
fruiting

ASJC Scopus subject areas

  • General

Cite this

Kesan Hujan, Bilangan Jambak Bunga Sawit Jantan dan Spikelet ke atas Kelimpahan Populasi Elaeidobius kamerunicus(Coleoptera : Curculionidae. / Nurul Fatihah, A. L.; Muhamad Fahmi, M. H.; Luqman, H. A.; Syarifah Nadiah, S. M.D.; Teo, T. M.; Hazmi, Izfa Riza; Idris, A. B.

In: Sains Malaysiana, Vol. 48, No. 1, 01.01.2019, p. 15-21.

Research output: Contribution to journalArticle

Nurul Fatihah, A. L. ; Muhamad Fahmi, M. H. ; Luqman, H. A. ; Syarifah Nadiah, S. M.D. ; Teo, T. M. ; Hazmi, Izfa Riza ; Idris, A. B. / Kesan Hujan, Bilangan Jambak Bunga Sawit Jantan dan Spikelet ke atas Kelimpahan Populasi Elaeidobius kamerunicus(Coleoptera : Curculionidae. In: Sains Malaysiana. 2019 ; Vol. 48, No. 1. pp. 15-21.
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abstract = "Elaeidobius kamerunicus was first introduced to Malaysia from Cameroon as an oil palm pollinator in 1981. Since then, oil palm pollination has improved and the need for assisted pollination has reduced. Fruit set development and fruit production also saw significant improvements, until a reported decline that began in the late 1980s. Several factors may have contributed to such decline, but most researchers believe it is due to the low E. kamerunicus population. Therefore, a study was conducted to determine whether the amount of rainfall and the number of male inflorescences and spikelets influenced the population abundance of E. kamerunicus in Ladang Lekir, Perak, Malaysia. Sampling was performed each month in oil palm subplots, three for each age of palm age, from October 2015 to September 2016. A total of nine spikelets (three from the top, middle and base of a male inflorescence) were randomly selected from each male inflorescence on each chosen palm. They were cut early in the morning to avoid the weevil’s most active time, thus making collection easier. The number of weevils congregating on each spikelet was then counted. The average number of E. kamerunicus per hectare (ha) living on oil palms aged four and six were 21,086 and 25,712, respectively. The amount of rainfall and the number of male inflorescences and spikelets were found to positively correlate with the E. kamerunicus population. The number of male inflorescences showed strong correlation with the E. kamerunicus population. However, in-depth study is needed to determine the relationship between E. kamerunicus and fruit set.",
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AU - Muhamad Fahmi, M. H.

AU - Luqman, H. A.

AU - Syarifah Nadiah, S. M.D.

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AB - Elaeidobius kamerunicus was first introduced to Malaysia from Cameroon as an oil palm pollinator in 1981. Since then, oil palm pollination has improved and the need for assisted pollination has reduced. Fruit set development and fruit production also saw significant improvements, until a reported decline that began in the late 1980s. Several factors may have contributed to such decline, but most researchers believe it is due to the low E. kamerunicus population. Therefore, a study was conducted to determine whether the amount of rainfall and the number of male inflorescences and spikelets influenced the population abundance of E. kamerunicus in Ladang Lekir, Perak, Malaysia. Sampling was performed each month in oil palm subplots, three for each age of palm age, from October 2015 to September 2016. A total of nine spikelets (three from the top, middle and base of a male inflorescence) were randomly selected from each male inflorescence on each chosen palm. They were cut early in the morning to avoid the weevil’s most active time, thus making collection easier. The number of weevils congregating on each spikelet was then counted. The average number of E. kamerunicus per hectare (ha) living on oil palms aged four and six were 21,086 and 25,712, respectively. The amount of rainfall and the number of male inflorescences and spikelets were found to positively correlate with the E. kamerunicus population. The number of male inflorescences showed strong correlation with the E. kamerunicus population. However, in-depth study is needed to determine the relationship between E. kamerunicus and fruit set.

KW - Coleoptera

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KW - Oil palm

KW - Oil palm pollinator

KW - Population abundance

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