Mosquito larvicidal effectiveness of EcoBio-Block S: a novel integrated water-purifying concrete block formulation containing insect growth regulator pyriproxyfen.
EcoBio-Block S, a novel controlled release system (CRS) for the insect growth regulator pyriproxyfen, uses a water-purifying concrete block system (EcoBio-Block) composed of a porous volcanic rock and cement, and it incorporates the aerobic bacterial groups of Bacillus subtilis natto. EcoBio-Block S showed high inhibitory activity against mosquito emergence as well as a water-purifying effect. Chemical analysis and bioassay showed that EcoBio-Block S provides a high-performance CRS that controls the release of pyriproxyfen at low levels according to "zero order kinetics".
Kawada
Hitoshi
H
Department of Vector Ecology and Environment, Institute of Tropical Medicine, Nagasaki University, Japan.
Saita
Susumu
S
Shimabukuro
Kozue
K
Hirano
Masachika
M
Koga
Masayuki
M
Iwashita
Toshiaki
T
Takagi
Masahiro
M
D000330:Aedes; D000818:Animals; D001412:Bacillus subtilis; D007814:Larva; D009032:Mosquito Control / Q000379:methods*; D011725:Pyridines; D014867:Water
D011725:Pyridines; D014867:Water; C055613:pyriproxyfen