抄録
The effects of methoprene (isopropyl 11-methoxy-3, 7, 11-trimethyldodeca-2, 4-dienoate) and its slow-release formulation, Altosid[○!R] 10F containing 10% methoprene, were evaluated against Psychoda alternata both in laboratory and field conditions. Methoprene was effective on P. alternata, causing larval death, pupal death, failure of emergence, and abnormal adults. The IC50 values of methoprene and its slow-release formulation were 0.0014 μg/ml and 0.0023 μg/ml, respectively. Three seconds subversion of the 4th instar larvae in this slow-release formulation (3.9 μg/ml methoprene) produced a marked emergence inhibition effect. A field test was conducted against a natural population of P. alternata in a 10-person septic tank in Naruto City. After the introduction of 2.5 g of this slow-release formulation into the tank, the adults of P. alternata disappeared 1 week after the treatment for a period of over two months.
