We evaluated knockdown caused by four insecticides: alpha-cypermethrin, chlorfenapyr, pirimiphos-methyl and fipronil against adults of Tribolium confusum Jacquelin Duval, the confused flour beetle and Oryzaephilus surinamensis (L.), the sawtoothed grain beetle. Bioassays were conducted on concrete and metal surfaces. Adults of the tested species were exposed on both surfaces treated with the ab...

In Burkina Faso, the availability of Acacia macrostachya “Zamnè” seeds throughout year is threatened by attacks pests. So, effectiveness airtight (hermetic) storage for preservation these was evaluated using 20-litre plastic jars and 50 kg PICS bags as hermetic containers with polypropylene controls. Seeds (17.5 kg) were stored in each devices six months under ambient conditions laboratory. The...

Os roedores sinantrópicos são pragas de grande importância no ambiente urbano e agrícola. Alem da transmissão doenças ocorre a contaminação alimentos com fezes, urina pêlos. O controle é realizado principalmente utilização iscas raticidas. presente trabalho teve por objetivo avaliar ocorrência artrópodes em amostras 1 Kg diferentes marcas comerciais contendo raticidas nas formulações grão integ...

The relationship of size of test arena, number of holes in a grain probe trap body and capture of the sawtoothed grain beetle, Oryzaephilus surinamensis (L.), was determined in simulated field tests conducted in an outdoor screen enclosure exposed to natural temperature fluctuations. Polyvinylchloride (PVC) probe bodies were attached to electronic sensor heads, and insect captures were recorded...

Susceptibility to two storage insect pests [(Cryptolestes pusillus (Sch . onherr) and Oryzaephilus surinamensis (L.)] of eight commercial oat cultivars from the United States was determined in laboratory studies. Duration of insect development was shorter and number of progeny produced was greater on cracked than on whole oats. Simulations based on data from the study showed that insect populat...

The efficacy of low temperatures ranging from 0 to −15 °C was evaluated against all life stages Tribolium confusum, adults Oryzaephilus surinamensis and Liposcelis bostrychophila. All species/life were exposed in empty vials or containing 5 g flour, for time intervals 2–7 d. Eggs pupae the least susceptible T. as these had highest survival at – 15 °C. Nevertheless, this temperature, an exposure...