Premium
Observations on the susceptibility of Ctenocephalides felis (Siphonaptera: Pulicidae) to malathion and permethrin in Tanzania
Author(s) -
KILONZO B. S.,
GISAKANYI N. D.
Publication year - 1988
Publication title -
medical and veterinary entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.028
H-Index - 82
eISSN - 1365-2915
pISSN - 0269-283X
DOI - 10.1111/j.1365-2915.1988.tb00204.x
Subject(s) - malathion , permethrin , biology , felis , ctenocephalides , toxicology , veterinary medicine , avermectin , pesticide , ecology , medicine , anatomy , cats
. Laboratory‐reared Ctenocephalides felis (Bouche) adults were tested with 0.5% malathion and 0.5% permethrin, using the standard WHO methods. After 24 h exposure to malathion (3.6 mg/cm 2 ), 92% of the fleas died. The LT 50 for malathion was approximately 8 h. Permethrin (0.45 mg/cm 2 ) produced 100% mortality of exposed insects after 24 h while with a higher dose (0.9 mg/cm 2 ) all fleas died after 8 h exposure. LT 50 for the two doses of permethrin were 7.7 and 1.05 h, respectively. The failure of the diagnostic dose of malathion to kill 100% of the population was attributed to resistance. Permethrin is a suitable pesticide for controlling fleas of domestic animals in Tanzania.