Biologi Parasitoid Koinobiont Opius sp. (Hymenoptera: Braconidae) Pada larva Lalat Pengorok Daun Liriomyza huidobrensis (Diptera: Agromyzidae)

Abstract

Opius sp. is koinobiont endoparasitoid of L. huidobrensis larvae. Opius sp. has short
life cycle, high fecundity and able to parasite at different larvae stages. The research objective was to
determine effect of larvae stages of LMF on parasitsm, fitness, development time and longevity of
Opius sp. The research was conducted at Laboratory of Biological Control and Glass house of Pest
and Plant Diseases Departement, Agriculture Faculty, Jember University from from April until July
2007. The insect were collected from Ngadisari, subdistrict of Sukapura, Probolinggo. The experiment
was done on two methods, choice and non choice test. Percentage of parasitization, the sting time,
development time, longevity, sex ratio, body lenght, hind and hind tibia of adult female and male of
parasitoid Opius sp were examined. The result showed that the sting time of Opius sp. was influenced
by larvae. The lates stages of LMF has the higher sting time compare early stages, 44,28 s on first
instar, 54,9 s on second instar, and 80,68 third instar respectly. Parasitization of parasitoid Opius sp.
was not influenced by larvae stage of L. huidobrensis. The percentage of parasitization on choice test
was 28,49% on first instar, 17,43% on second instar and 14,95% third instar. On the other hand, on
non chice test was 48,21% on first instar, 54,52% on second instar and 54,00% on third instar. Sex
ratio, adult fitness, body length, hind and hind tibia length, development time, longevity were
influenced by larvae stages.