Comparative of chemical and biological control on Cimex lectularius
الملخص
Bed bugs (Cimex lectularius L.) are major medical and economic parasites around the world, and managing them necessitates a variety of control strategies. To control bed bugs, plant-derived essential oil extracts are utilized instead of mechanical treatments and synthetic insecticides. The goal of this study was to provide detailed information on the efficacy, toxicity, and mechanism of essential oils and the insecticidal chemicals found in bed bugs. Bed bugs were collected from a variety of afflicted residences (buildings) in Benghazi, Libya, including houses, apartments and institutions. The experiment consisted of chemical pesticide Diazinon at concentration (2, 1, 0.5, 0.25, 0.125, 0 ml/l) and essential oil at concentration (100, 75, 50, 25, 12.5, 0 mg ml−1), with three replicates. The results showed that whereas the control treatment showed no bed insect mortality, a higher concentration of neem (Azadirachta indica) essential oil up to 100 μ ml−1 and longer durations up to 72 h enhanced the mortality percentage, recording 100% bed bug death. Furthermore, increasing the Diazinon concentration to 2μ ml−1 and prolonging the time to 72 hours led to a 100% bed bug mortality rate, whereas the control treatment showed no mortality. The diazinon insecticide and the essential oil of neem were found to be toxic to bed bugs at lethal dosages (LD50, LD90) after 24, 48, 72 hours of exposure; however, the control group did not experience any mortality.