期刊
JOURNAL OF THE AMERICAN MOSQUITO CONTROL ASSOCIATION
卷 25, 期 1, 页码 74-82出版社
AMER MOSQUITO CONTROL ASSOC
DOI: 10.2987/08-5752.1
关键词
Aedes notoscriptus; bifenthrin; larvicide; leaf-litter; tires
类别
The efficacy of maximum label rates of bifenthrin applications to dry tires to prevent Aedes mosquito breeding was investigated by field colonization and bioassay trials in shaded and unshaded locations. Aedes notoscriptus and Culex quinquefasciatus larvae were the most abundant species present in the field colonization trial. Colonization and survival of Ae. notoscriptus larvae to the late instar occurred significantly earlier in treated tires in shaded compared with unshaded locations (P = 0.002). Bifenthrin applications in shaded tires only prevented early instar survival for similar to 2.6 wk. Aedes notoscriptus late instars did not appear in the treated unshaded tires. Culex quinquefasciatus colonized treated tires from the 2(nd) wk in both shaded and unshaded treatments. In the bioassay, water from bifenthrin-treated tires, through extrapolation, was found to kill similar to 100% of late instar Ae. notoscriptus for only similar to 2.0-2.2 wk in shaded and unshaded tires. Under conditions optimal for Aedes breeding, Such as shaded locations, high ambient temperatures, high relative humidity, and high amounts of leaf/organic matter accumulations, bifenthrin may not be effective as a larval control measure in tires for greater than 2.0-2.6 wk.
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