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Pakistan Journal of Biological Sciences

Year: 2021 | Volume: 24 | Issue: 11 | Page No.: 1209-1216
DOI: 10.3923/pjbs.2021.1209.1216
Elaeidobius kamerunicus (Coleoptera: Curculionoidea): Activity on Oil Palm Flower in Central Kalimantan, Indonesia
Agus Dana Permana , Ramadhani Eka Putra, Agus Susanto and Amin Setyo Leksono

Abstract: Background and Objective: Elaeidobius kamerunicus Faust (Coleoptera: Curculionoidea) is a weevil pollinator oil palm flower, Elaeis guineensis Jacq. (Arecales: Arecaceae) Jacq. Male and female inflorescences attracted the weevil, male inflorescences appeared to provides nectar and pollen but female inflorescences seemed provides the weevils with nectar. The objective of this research was to determine the dynamics of E. kamerunicus activity in pollinating oil palm flowers in Kumai, Central Kalimantan, Indonesia. Materials and Methods: The population of E. kamerunicus that visited male flowers was calculated by taking a sample of 9 spikelets from male inflorescences, while the number of E. kamerunicus that come to female inflorescence was calculated by counting the weevil around the flower. Results: The results of this study showed that peak activity of E. kamerunicus on oil palm flowers occurred between 11.00-12.45. The male flowers blossomed occurred for 6-7 days to complete their inflorescence, while those of the females completed their cycle for 4-5 days. The oviposition of E. kamerunicus females fluctuated from 05.00-18.00. The number of females oviposits in the flower peaked at 09.00. Temperature and maximum light intensity had a positive correlation with the overall density of E. kamerunicus and oviposition by female weevils. The Minimum light intensity affects the abundance and visitation of E. kamerunicus on oil palm flowers. Conclusion: The abundance of E. kamerunicus population in Kumai was established and could give possibility resulting in the better fruit set of oil palm. Conservation efforts can be conducted by maintaining the abundance of the population, especially on the days and hrs of peak abundance of weevils.

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How to cite this article
Agus Dana Permana, Ramadhani Eka Putra, Agus Susanto and Amin Setyo Leksono, 2021. Elaeidobius kamerunicus (Coleoptera: Curculionoidea): Activity on Oil Palm Flower in Central Kalimantan, Indonesia. Pakistan Journal of Biological Sciences, 24: 1209-1216.

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