Kelimpahan, Biologi, dan Kemampuan Pemangsaan Oligota sp. (Coleoptera: Staphylinidae), Kumbang Predator Tungau pada Tanaman Ubikayu

Abstract

Mites infestation is one of the main problem in many agricultural commodities. One of the best methods to control mites infestation is biological control using insect predators. The objective of this study is to know the abundance, biology, and predation ability of mites-predatory beetle, Oligota sp. on cassava. Surveys were conducted in cassava plantation around Bogor to know the abundance of Oligota sp. Oligota sp. collected from the field were reared in the laboratory to observe its biology. Experiment to know the predation ability of Oligota sp. was conducted using 3rd stage larvae, with 5, 10, 15, 20, and 25 adult mites as preys. Observations were carried out 3, 6 and 24 hours after treatment. The developmental time of male and female were 15.047 and 16.097 days, respectively. The longevity of male and female were 20.974 and 21.677 days respectively. Female laid 22.923 eggs in 14.154 days. The 3rd stage larva of Oligota sp. consumed 18 adult mites for 24 hours.