Parasitologia hungarica

Author(s): Bajomi, D., Varjas, L., Papp, L., Farkas, R. & Tomcsik, J.
Title: Laboratory tests and practical evaluation of novel granule formulations containing BTI or methoprene developed for controlling mosquito and fly larvae
Title: Bacillus thuringiensis subsp. israelensis (BTI) szer és a metoprén juvenilhormon analóg (juvenoid) laboratóriumi tesztelése szúnyog- és légylárvákon
Year: 1996-1997
Volume: 29-30
Pages: 75-86.

Abstract: The residual activity of Bacillus thuringiensis subsp. israelensis (BTI) and methoprene, a juvenile hormone analogue (juvenoid) was assessed when their novel granule formulations, were tested on mosquito and fly larvae. BTI B 5 GR mosquito larvicide at 5 and 10 ppm (a.i.) gave 100% control against L4 larvae of Aedes aegypti for 4 and 12 weeks, respectively. Similar prolonged 16 weeks efficiency could be demonstrated with the methoprene containing BIOPREN BM 5 GR formulation. When applied at 1 to 20 ppm (a.i.) to L3 and L4 larvae of Ae. aegypti. Under simulated natural conditions, young (L1-L2) and old (L3-L4) larvae of Ae. cantans proved especially susceptible, since methoprene incorporated into these granules at a concentration of 0.1% prevented adult emergence for 5 weeks. Tests carried out with L3 Ae. aegypti larvae in closed containers revealed that relatively high temperature and bacterial contamination could decrease the persistence of juvenoid. The specific morphogenetic activity of methoprene was also observed in tests performed with larvae of Musca domestica. In a laboratory experiment, BIOPREN BM 5 GR inhibited adult emergence for at least 12 weeks even at low dose of 10 mg/kg of pig manure. In another trial conducted in pig-rearing houses with an intensive, cage management system, treatments with the same granules resulted in a significant suppression of previously massive house fly population
Keywords: Muscidae, methoprene, Musca domestica, Culicidae, Aedes aegypti, mosquito control, fly control, selective larvicide, Bacillus thuringiensis subsp. israelensis, BTI, juvenoid, Insect Growth Regulators

Journal: Parasitologia Hungarica
Journal abbreviation:
ISSN: 0303-688X
Publisher: Magyar Parazitológusok Társasága, Budapest
Editor(s): K. Murai, É., Thoma, A., Gubányi, A. & Tajti, T. Zs.