TY  - JOUR
T1  - The Laboratory Efficacy of Cypermethrin Dust Against Lesser Mealworm Larvae 
  and Adults, <I>Alphitobius diaperinus</I> (Panzer) (Coleoptera: Tenebrionidae)
AU - Chernaki-Leffer, A.M. AU - Ishizuca, M.M. AU - Balieiro, J.C.C. AU - Gorniak, S.L. 
JO  - Journal of Animal and Veterinary Advances
VL  - 11
IS  - 13
SP  - 2215
EP  - 2219
PY  - 2012
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2012.2215.2219
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2012.2215.2219
KW  - Lesser mealworm
KW  -cypermethrin
KW  -avian production
KW  -aviary simulation
KW  -efficacy
KW  -Brazil
AB  - Cypermethrin dust was evaluated as a tool for the integrated management of lesser mealworms (also called the darkling beetle), <I>Alphitobius diaperinus </I>(Panzer). This experiment examined the efficacy of the cypermethrin against adult and late instar lesser mealworms under laboratory conditions. Two bioassay methods were evaluated, using either a petri plate or a covered plastic container simulating poultry house conditions. In the simulated conditions, two different samples were used and cypermethrin was either dusted onto the surface of the container or was directly dusted onto the bottom. The LC<SUB>50</SUB> for adults was 636.6 ppm, however, 929.7 ppm of cypermethrin dust was needed to achieve a 50% mortality rate in late instar larvae 24 h after the administration of the insecticide. A similar trend was observed in the simulated poultry houses when the adult mortality was &gt;90% while effectiveness in late instar larvae was decreased, i.e., between 50 and 85%. Significant differences in the toxicity profiles were observed in larvae mortality when cypermethrin it was dusted directly onto the litter surface, compared to the bottom of the container. We have verified that cypermethrin dust is available for use in poultry houses however, toxicity profiles of lesser mealworm may depend on the beetle&#146;s stage of development and method of application.
ER  -