Fig. 1. Collection sites of aphid egg from the bark or twigs of trees growing along main roads in Gangwon-do, 2017. Each site included 1-8 sampling locations that were spaced 1-3 km apart.
Fig. 2. Seasonal fluctuation of migratory aphid at three highland regions in Gangwon-do Province. Surveyed aphids using a yellow water-pan trap in 2017.
Fig. 3. Fluctuation of migratory aphids and virus infection rate at Daegwallyeong highland region during late April to late June in 2018. Aphids trapped were inoculated on the young leaves of P. floridana and PLRV detected by ELISA.
Fig. 4. PLRV transmission rates (%) by aphid species migrated to Daegwallyeong area in 2018.
Table 1. List of 57 plants and 11 sites to collect aphid egg over-wintered in the bark or twigs
Table 1. Continued
Table 2. Aphid species over-wintered in the host plants growing along main roads near potato fields at several regions in Gangwon-do. Aphid eggs were identified with MtCO1-based molecular identification