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EFFECT OF ADDITION OF PHEROMONE CRUDE EXTRACT TO TOXIC BAITS ON GERMAN COCKROACH , Blattella Germanica (L.) (Dictyoptera :Blattellidae) | ||
| AL-TAQANI | ||
| Article 1, Volume 22, Issue 1, 2009, Pages 0-0 | ||
| Abstract | ||
| Studies on the efficacy of three toxic baits by using Chlorpyrifos , Abamectin ,Boric acid against German cockroaches Blattella germanica (L.) showed that the time required to kill 50% of cockroaches (KT-50) by the above mentioned toxic baits were 35 , 88.6 and 166.6 hrs. respectively . A significant deferences was also found between mortality of cockroaches killed with the mention of baits at the 7th day after treatment being reached to 88.6, 74, 53.2 % respectively. Killing was increased , when a fecal extract was added to the baits , this increased may due to the effect of aggregation pheromone in reducing the repellency of effect insecticide used in this assay . The value of relative avoidance index (RAI) and the an increase in bait consumption enforces considerable effect of aggregation pheromone to increase exposure of cockroaches to the toxicants despite the presence of alternative food in the arena | ||
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