Staples Kerry, Oosthuizen Jacques, Lund Mark
J Am Mosq Control Assoc. 2016 Sep;32(3):203-209. doi: 10.2987/16-6563.1.
Floating emergence traps were used in 15 road gullies to determine the effectiveness and longevity of S-methoprene briquets over 124 days. Samples were taken monthly from October 2014 to March 2015. Two treatment methods were assessed: application of briquet using a float, and application without a float. These methods were compared with untreated control gullies. Mosquito emergence peaked in early November, and decreased by February. Effectiveness of the briquet was not impacted significantly by the presence or absence of a float (P = 0.329). Gullies yielded a mean of 108 mosquitoes per day per gully over the season. Culex quinquefasciatus and Aedes notoscriptus were the most abundant species. The maximum number of Cx. quinquefasciatus emerging could exceed 1,600 per day per gully. Aedes notoscriptus numbers could exceed 70 adults per day per gully. Treatment with S-methoprene was highly effective against both species for at least 70 days and partially effective for up to 120 days. Treatment provided no control by day 124. S-methoprene provided 90% control over 124 days. Road gullies have been confirmed as a significant larval habitat and are likely to be increasing the potential for Ross River virus transmission in the area.
在15个道路排水沟中使用了漂浮式诱蚊羽化器，以确定烯虫酯片在124天内的有效性和持久性。从2014年10月至2015年3月每月采集样本。评估了两种处理方法：使用漂浮物施用片剂和不使用漂浮物施用。将这些方法与未处理的对照排水沟进行比较。蚊子羽化在11月初达到高峰，到2月减少。片剂的有效性不受是否存在漂浮物的显著影响（P = 0.329）。整个季节，每个排水沟平均每天产生108只蚊子。致倦库蚊和环纹伊蚊是最常见的物种。每个排水沟每天出现的致倦库蚊最多可超过1600只。每个排水沟每天出现的环纹伊蚊数量可超过70只成虫。用烯虫酯处理对这两个物种至少70天非常有效，长达120天部分有效。到第124天处理无效。烯虫酯在124天内提供了90%的防治效果。道路排水沟已被确认为重要的幼虫栖息地，很可能增加该地区罗斯河病毒传播的可能性。
