PARENT SESSION
Poster Session 29: Predator / Prey Ecology
Thursday, August 11, 5:00 PM - 6:30 PM, Exhibit Hall 220 A-E, Level 2, Palais des congrès de Montréal

Interaction between Acronicta rumicis and Glyptapanteles liparidis.

Cho, Young-Ho^*,1, Nam, Sang-Ho², Kwon, Ohseok³, ¹ Dept. of Biology, Daejeon University, Daejeon, 96-3 Yongun-dong, Dong-gu, Republic of Korea² Dept. of Biology, Daejeon University, Daejeon, 96-3 Yongun-dong, Dong-gu, Republic of Korea³ Weed Management Division, NIAST, Suwon, Seodun-dong, Kweonseon-gu, Republic of Korea

ABSTRACT- Mortality of Glyptapanteles liparidis parasitized Acronicta rumicis was higher than that of control groups (17.86%) when parasitized at 1^st instar (46.67%), 2^nd instar (90%), 3^rd instar (71.67%). But, the mortality was 16.67% when parastized at its 4^th instar. Food consumption of A. rumicis larvae was observed after parasitizing at 1^st to 4^th instar of host. The quantity of required food for each group was 6495.58±646.52mm² (1^st instar larvae), 7951.12±4167.36mm² (2^nd instar), 13826.77±3396.66mm² (3^rd instar), and 18599.85mm², respectively. On the other hand, that of control group was 17193±2489mm² (1^st instar), 17160±2496mm² (2^nd instar), 17000±2499mm² (3^rd instar), and 16731±2498mm² (4^th instar), respectively. It was shown that significant difference among control groups. G. liparidis took 23.75±1.26 days (1^st instar larvae A. rumicis), 21.95±2.44 days (2^nd instar), 20.83±0.78 days (3^rd instar), and 19 days (4^th instar) until eclosion from eggs. It was observed that the life cycle from egg to eclosion of G. liparidis became shorter when parasitized in older hosts.

Key words: Acronicta rumicis, Glyptapanteles liparidis