Abstract: Solitary type is one of ecological types of Locusta Migratoria Manilensis.It is important to understand deeply the behavior of solitary locust for controlling and forecasting locust.The studies on the effects of pheromones from gregarious and solitary locusts on aggregation behavior of solitary locusts were performed using electroantennography(EAG) and olfactometer bioassay.The results showed that the fecal volatile extracts emitted from the gregarious hoppers had significant aggregation effects on the solitary hoppers,the solitary hoppers elicited significant EAG responses to the pheromones from gregarious hoppers,there into the activity of the fecal extracts was higher,the solitary locusts were sensitive to the pheromones from the same or older stage gregarious hoppers as it,and the male was more sensitive than the female,the pheromones from gregarious adults excited significant EAG response for solitary hoppers,the activity of the pheromone from male gregarious adults was stronger,the solitary hoppers elicited lower EAG responses to the pheromones from solitary hoppers.The behavior and PHA_Se transformation are closed relationship with pheromones from relevant environment,it is necessary to study comprehensively in the future.

Key words: Locusta Migratoria Manilensis, Pheromone, Aggregation behavior, Solitaria

CLC Number: 

• S433.2