Effects of indoxacarb on the movement and necrophoric behavior of Solenopsis invicta
Solenopsis invicta is a typical social insects.During the control process,S.invicta tends to cause nest migration and body discarding,which affects the control effect.After applying indoxacarb bait at the set dose to the marked ant nests,the increase number of ant nests and the quantity of worker ant corpses were observed regularly.After the application of 0.08％and 0.1％indoxacarb baits,the migration of ant nests appeared 30 d after the application of 0.08％and 0.1％indoxacarb baits.After 5 to 10 d of treatment,a large number of new nests appeared,and then the colony tended to be stable with less new nests.After 25 to 30 d of treatment,new nests appeared again.In the treatment of 0.1％indoxacarb bait 15 g/nest,eight new nests appeared five days after application,and five new nests were added at 10 d and 30 d respectively.The few number of new nests was observed at other times.According to the treatment dose,the number of new nests in 15 g/nest treatment was significantly higher than that in 25 g/nest treatment,and the corrected cumulative increase rate of 0.1％indoxacarb 15 g/nest treatment was the highest,reaching 124.98％,0.08％indoxacarb 15 g/nest treatment was 89.05％.The average corrected cumulative increase rates of 0.08％and 0.1％indoxacarb at 25 g/nest were 12.00％and 51.34％,respectively.After 15 g/nest of bait was applied,a large number of worker ant corpses were discarded from the 2nd day after the treatment,and the number of discarded bodies reached the maximum on the 4th day after the treatment,the amount of discarded corpses treated with 0.08％and 0.1％indoxacarb baits was 330.5 and 300.2 individuals/nest respectively,and then gradually decreased to the lowest on the 14th day after the treatment.The amount of body discarded was more than 75.26％after 8 d,and more than 90.08％of total body discarded after 10 d.The results showed that 15 g/nest of bait could induce nest migration,and the corpse discarding behavior of S.invicta mainly occurred in the first 8 d after bait application.
万方数据
维普
