The Potency of Collecting Larvae of Oryctes rhinoceros L. (Coleoptera:Scarabaeidae) in the Oil Palm Plantation

Abstract

The intensive and continuous collection of rhinoceros beetles, Oryctes rhinoceros L. (Coleoptera: Scarabaeidae), is an extraordinary strategy in IPM (Integrated Pest Management). This study was intended to evaluate the potency of people in collecting larvae and to determine the age structure of the beetle population. The study was conducted in Asahan Regency, North Sumatera Province. Adult men, adult women, adolescent girls, and adolescent boys collected beetles for 2 hours in each breeding site. Results showed that the beetle was more significant abundant in decomposed trunks at plots of immature and mature palms than at heaps of the empty fruit bunches namely 236, 221 and 93 individuals/2 hours. The population age-structure showed significantly predominant of 2 nd and 3 rd instars in all breeding sites, i.e. eggs, 1 st instars, 2 nd instars, and 3 rd instars, pupae, adult males, and adult females were 2.02, 23.29, 21.39, 47.06, 3.17, 0.86, and 2.21%, respectively. Adult men, adult women, and adolescent boys had similar potency in collecting 3 rd instar larvae while the least amount was collected by the adolescent girls viz. 70, 85, 60, and 38 larvae/2 hours, respectively. It is suggested that the study results support future efforts in the sustainable control of rhinoceros beetle through collecting larvae for commercial utilization.

Struktur umur dan kelimpahan kumbang badak dan kumbang tanduk (Coleoptera: Scarabaeidae) pada perkebunan kelapa sawit di PTPN VIII Unit Parakan Salak, Kabupaten Sukabumi

“…Beberapa strategi pengendalian kumbang badak dan kumbang tanduk yang dapat dilakukan antara lain dengan menggunakan perangkap feromon etil 4-metiloktanoat untuk imago kumbang dan sanitasi lahan untuk mengendalikan larva pada breeding site (Hosang & Salim 2014;Manjeri et al 2014;Bedford 2014;Witjaksono et al 2015;Indriyanti et al 2018). Pradipta et al (2020b) juga menyatakan bahwa pengambilan secara manual larva pada breeding site dan pemanfaatan larva tersebut secara komersial dapat mendukung upaya pengendalian hama yang berkelanjutan. Informasi mengenai struktur umur, kelimpahan populasi, dan perilaku imago kumbang dalam mencari breeding site yang didapatkan dari penelitian ini dapat digunakan untuk menentukan metode pengendalian yang tepat untuk spesies kumbang badak maupun kumbang tanduk, dimana pada awal musim hujan pengendalian dapat dilakukan dengan pemasangan perangkap untuk mencegah imago kumbang mencari breeding site dan selanjutnya dilakukan sanitasi lahan untuk mencegah larva dari kedua kumbang tersebut berkembang pada breeding site.…”

Isolation, molecular characterization, and virulence assays of entomopathogenic fungi of Oryctes rhinoceros larvae from Asahan origin

“…Oryctes rhinoceros or rhinoceros beetle is one of the pests that often attack coconut farms and also oil palm plantations. This insect can reduce crop yields and cause young seedlings to die in seedbeds [2].…”

Investigation the Potential of Myopopone castanea Smith (Hymenoptera: Formicidae) as Bio-Agent of Oryctes rhinoceros (Coleoptera: Scarabaediae) in Oil Palm Plantations

“…This symptom is typical of horn beetle attacks. This pest is controlled chemically and mechanically by handpicking (Pradipta et al, 2020). The use of carbofuran and cypermethrin insecticides is very difficult to do on oil palms that are over one year old and also has an impact on the environment and does not support the demands of sustainable agriculture on RSPO (Roundtable Sustainable Palm Oil) oil palm plantations (Abd Karim et al, 2019) Biological control is the best alternative method and a more environmentally friendly process to control pestilential organisms (including pathogens, pests, and weeds) for diverse purposes to benefit humans.…”