Study on the amount of bait transported and control effect on Solenopsis invicta by a new bait dispensing station in the field
Baiting is the most effective and widely utilized method for controlling the red imported fire ant Solenopsis invicta Buren.In order to evaluate the impact of a new bait dispensing station on the amount of bait transported by fire ant workers and their control effectiveness,the amount of 0.08％indoxacarb bait and its carrier transported by fire ant workers were compared using a new bait dispensing station versus direct broadcasting.Individual mound of red imported fire ant was treated with bait at doses of 5 g/nest,10 g/nest and 20 g/nest to evaluate the effect of bait station on controlling S.invicta in the field.The results showed that both the amount of 0.08％indoxacarb bait and its carrier transported by fire ant workers in bait station were lower than with direct broadcasting.However,the transported amounts of 0.08％indoxacarb bait were recorded as 14.84±3.18 g for bait station treatment and 17.71±5.88 g for direct broadcasting treatment at 24 hours,with no significant difference.After treating with bait at doses of 10 g/nest and 20 g/nest in bait station for 28 days,the decline rates of worker,nest and ant colony level,as well as the combined control effect on S.invicta were over 90％.There was no significant difference between bait station treatment and direct broadcasting treatment.Although the bait station can partly reduce the amount of bait carried by fire ant workers,it still demonstrated good control effect against the red imported fire ant.The bait dispensing station offered the advantages of rain and moisture resistance,and significantly extended the suitable period for controlling the red imported fire ant.
NETL
NSTL
万方数据
