Formation of aggregations in adults of the brown marmorated stink bug, Halyomorpha halys (Stal) (Heteroptera: Pentatomidae): The role of antennae in short-range locations

摘要: We examined whether stimuli among one another are involved in the short-range locations of Halyomorpha halys adult, which often forms aggregations when overwintering. Ten diapausing adults were released into a clear container at 10°C. After certain time period, their distribution was compared with random distribution, and tendency for strong concentrated crowding observed under both light dark conditions. However, antennectomy prevented bugs from aggregating this clarified role antenna locations. This finding suggests that overwintering aggregation H. is guided by chemical or tactile interaction individuals, least within narrow range. In addition, relationship between habit temperature examined. Although temperatures 15°C 20°C caused to become active, settling close not reduced. Based on these results, we inferred itself dependent, an increase opportunity contact each other, such as mutual preference environment, decrease behavioral activity resulting temperature.