Population Dynamics of Alate Aphids at Garlic Fields in Hokkaido, Japan

Abstract

Population dynamics of alate aphids were surveyed using yellow pan traps at two garlic fields (Pippu and Takikawa) in Hokkaido, Japan, in 2020. In the Pippu survey during the early spring to harvest season, the first capture of alate aphids was observed on May 28. In Takikawa during the same season, the first capture was observed from May 30 to June 4. Additionally, in Pippu, during the planting time to snow coverage, the last capture was observed from October 30 to November 1.