中国农业科学2011，Vol.44Issue(23)：4815-4822,8.DOI:10.3864/j.issn.0578-1752.2011.23.007
光活化成分α-三联噻吩对红火蚁的致死作用及对其行为的影响
Behavioral and Lethal Effects of α-terthienyl on the Red Imported Fire Ant (RIFA)
摘要
Abstract
[Objective] The objective of this study is to define the effects of a-terthienyl on the red imported fire ant (Solenopsis invicta Buren) behavior and lethality. [Method] The behaviors including aggregation, cling ability and walking ability, lethal effect and knock-down activity of a-terthienyl exposed in UVA were researched by potter spray, and the scanning electron microscope was used to probe into the light activity mechanism of a-terthienyl to the red imported fire ant. [Result] When the illumination times were 90,120 and 180 min, the knock-down rates of the red imported fire ant treated with 100 μg·Ml-1 a-terthienyl were 93.08%, 98.29% and 100%, which were higher than those treated without irradiation. After the red imported fire ants were treated with 100 μg·Ml-1 a-terthienyl in dark for 90,120 and 180 min, the knock-down rates of the red imported fire ant were 7.41%,18.52% and 25.93%, respectively. After they were treated with 100 μg·Ml-1 a-terthienyl in irradiation for 30 min, then set into dark for 1, 30, 60, 90, 120, 150 and 180 min, the mortalities of the red imported fire ant were 6.25%, 10.42%, 18.75%, 29.17%, 37.50%, 43.75% and 52.08%, respectively, the walking rates of the red imported fire ant were 25.26%, 18.75%, 10.67%, 6.58%, 2.83%, 2.08% and 0, respectively, the cling rates of the imported fire ant were 20.83%, 12.50%, 6.17%, 4.17%, 2.01%, 1.96% and 0, respectively, and the aggregation rates of the red imported fire ant were 20.78%, 17.19%, 10.94%, 15.63%, 14.06%, 27.08% and 37.50%, respectively. After the red imported fire ants were treated with 100 μg·Ml-1 a-terthienyl in irradiation for 30 min and placed in dark for 30 min, the antennal sensilla shape of the red imported fire ant changed significantly. Most of the antennal sensillum presented disordered, lodging and bending phenomen. [Conclusion] The a-terthienyl possesses the lethal effect and knock-down ability against the red imported fire ant, and can significantlly decrease the aggregation, cling ability and normal walking ability, and also change the shape of the antennal sensilla of the red imported fire ant. The results suggest that the method of using photoactivation composition is expected to become a safe and environment-friendly method for the control of the red imported fire ant.关键词
α-三联噻吩(α-T)/红火蚁/致死作用/行为影响/感受器Key words
a-terthienyl (a-T)/ Solenopsis invicta Buren/ lethal effect/ behavioral effects/ sensilla引用本文复制引用
刘娜,程东美,徐汉虹,张志祥..光活化成分α-三联噻吩对红火蚁的致死作用及对其行为的影响[J].中国农业科学,2011,44(23):4815-4822,8.基金项目
广东省教育部产学研结合项目(2006D90204003) （2006D90204003）
