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ACQUISITION and TRANSFER of a LAMBDA-CYHALOTHRIN MICROCAPSULE FORMULATION by BLATTELLA GERMANICA

P. J. Wege , A. F. Bywater , G. N. J. Le Patourel and M. A. Hoppé | Full Paper | 2002

The processes by which insects acquire toxic doses of the microencapsulated formulation of lambda-cyhalothrin (Demand CS) were studied using the German cockroach, Blattella germanica (L.). Cockroaches exposed to treated substrates acquired toxic doses of the insecticide rapidly, and HPLC analysis of...

FORCED CONTACT AND ARENA BIOASSAYS TO ASSESS THE PERFORMANCE OF A PYRETHROID WP DEPOSIT AGAINST ORIENTAL COCKROACHES

G. N. J. Le Patourel | Full Paper | 1996

LT5Os and LT95s were determined at 28°C for adult female Blatta orientalis over deposit concentrations varying from 15-200 mg A1 m-' on a plywood surface treated with a WP formulation of cypermethrin. Mortality was determined 3 days following removal from the deposits. Regression equations for these...

ENVIRONMENTAL ASPECTS OF THE SURVIVAL AND REPRODUCTION OF ORIENTAL COCKROACHES (BLATTA ORIENTALIS L.).

G. N. J. Le Patourel | Full Paper | 1993

The ability of mobile stages of oriental cockroaches to survive at -5C increased with acclimation at 10°C. Fully acclimated insects had LT5Os (time) of 1.3 - 4.1 days, depending on stage. A minimum of 8 days at - 5°C or 1 days at - 10°C was required to kill all stages; insects could survive for more...