Department of Entomology, National Taiwan University, Taipei, Taiwan.
Pest Manag Sci. 2012 Mar;68(3):394-8. doi: 10.1002/ps.2275. Epub 2012 Jan 6.
The purpose of this study was to determine the most effective particle size of DDGS (distiller's dried grains with solubles) as fire ant bait carrier, as well as the most effective concentration of cypermethrin as a toxicant against the red imported fire ant (RIFA) Solenopsis invicta Buren under laboratory conditions.
The DDGS particle size did not affect the fire ant's preference for the bait, but it did affect the mass of DDGS being carried back to the nest. The size of the DDGS particles and the mass of DDGS being carried back to the nest were positively correlated. The most efficient particle size of DDGS was 0.8-2 mm. The concentration of cypermethrin has a specific range for killing fire ants in an efficient manner. Neither a very low nor a very high concentration of cypermethrin was able to kill fire ants efficiently. The most effective concentration of cypermethrin was 0.13% in DDGS when mixed with 15% shrimp shell powders and 11% soybean oil.
Based on its ability to kill fire ants when mixed with cypermethrin, as well as the advantage of having a larger area coverage when sprayed in the field, DDGS as the carrier and cypermethrin as the toxicant can be considered to be an efficient way to prepare fire ant bait for controlling fire ants in infested areas.
本研究旨在确定 DDGS（可溶固形物干酒糟）作为红火蚁毒饵载体的最佳粒径，以及作为毒剂的氯菊酯对红火蚁（红火蚁）在实验室条件下的最有效浓度。
DDGS 粒径并不影响红火蚁对诱饵的偏好，但它确实影响带回巢穴的 DDGS 质量。DDGS 颗粒的大小与带回巢穴的 DDGS 质量呈正相关。DDGS 的最有效粒径为 0.8-2 毫米。氯菊酯的浓度有一个特定的范围，可以有效地杀死红火蚁。氯菊酯的浓度非常低或非常高都不能有效地杀死红火蚁。当与 15%的虾壳粉和 11%的大豆油混合时，DDGS 中氯菊酯的有效浓度为 0.13%。
基于其与氯菊酯混合时杀灭红火蚁的能力，以及在田间喷洒时具有更大的覆盖面积的优势，DDGS 作为载体和氯菊酯作为毒剂可以被认为是一种制备红火蚁毒饵的有效方法，用于控制疫区的红火蚁。
