Vol. 39, No. 1-2, 1995
The development of resistance in the housefly (Musca domestica) and german cockroach (Blatella germanica) after the selection with permethrin
Kocisova, A., Kukucka, D., Petrovsky, M., Para, L.
University of Veterinary Medicine
Komenskeho 73
SK-041 81 Kosice
Slovak Republik
+Institute of Experimental Veterinary Medicine
Hlinkova 1/A
040 01 Kosice
Slovak Republik
Summary
Selection under field conditions was conducted using COOPEX 25 WP preparation (active ingredient permethrin) against two species of insects; the housefly and the German cockroach. After the one-seasonal selection resistance in the housefly had increased from a starting range of 0 &3#45; 2% to 23 &3#45; 44% in the following year. The next year, after excluding permethrin from use, resistance to this substance at the farms monitored became stabilized, or increased, reacting at a range of 29 to 63%.
In the German cockroach, probably because of its longer life cycle (30&3#45;120 days as compared to 8--30 days in the housefly) a decreased effect of COOPEX 25 WP was observed after two years of regular application.
Key words: permethrin; resistance; selection; housefly; German cockroach
References
Folia Veterinaria / 1995