Ants as Environmental Impact Bioindicators From Insecticide Application on Corn

作者：Pereira Jardel Lopes^*; Picanco Marcelo Coutinho; da Silva Antonio Alberto; de Barros Emerson Cristi; da Silva Ricardo Siqueira; da Silva Galdino Tarcisio Visintin; Santos Marinho Cidalia Gabriela

来源：Sociobiology, 2010, 55(1): 153-164.

• environmental impact
• spinosad
• clorfenapir
• lufenuron
• predator ants
• bioindicators

The risk evaluation from insecticide application about ants is an issue that is still underdeveloped, mainly in tropical regions. Because of this, the aim of this work was to evaluate the impact caused by the application of spinosad, chlorfenapyr and lufenuron insecticides to ants on the surface of the soil associated with corn cultures. The treatments utilized were: Lufenuron (300 ml ha(-1)), Spinosad (69 ml ha(-1)) and Chlorfenapyr (625 ml ha(-1)). A control group was maintained without the application of insecticides. The experimental delineation used was casual blocks with 5 repetitions. The applications of insecticides were carried out 45 days after the emergence (DAE) of the corn. The Formicidae populations collected on the surface of the soil consisted of the following morphospecies: Tapinoma sp., Hypoponera sp., Neivamyrmex sp., Strumigenys sp., Pheidole sp., Solenopsis sp. (two morphospecies), Pachycondyla sp. The capture frequency of the predator ants on the soil was 81%, with species presenting greater percentage frequencies respectively: Solenopsis sp1 (40.02%), Neivamyrmex sp (28.57%), Hypoponera sp. (22.45%), Pachycondyla sp. 1 (19.39%), and Tapinoma sp. (16.33%). After applying spinosad, chlorfenapyr and lufenuron a reduction was observed in both the average density and the frequency of the Solenopsis ap. 1, Neivamyrmex sp., Hypoponera sp. and Tapinoma sp. species proving the impact these insecticides have on these predators.

• 出版日期2010