在全球范围内,蚊子是最危险和最具影响力的媒介,将多种传染病传播给人类和其他动物。当前研究的主要目的是评估来自罗勒和罗勒的EO在控制斯蒂芬氏按蚊Liston中的有效性。库蚊和埃及伊蚊。幼虫,蚊子的p和卵暴露于四种不同的浓度(6.25-50ppm)。对于所有检查的蚊子物种的卵,测试的EO在120小时时导致>99-100%的死亡率。它还显示出强大的杀幼虫和灭虫活性,对伊蚊的LC50和LC90值为17-39、23-60ppm和46-220和73-412ppm,库蚊和按蚊,分别,在24小时的治疗。适宜性指数或捕食者安全系数表明,从O.tenuiflorumL.和O.americanumL.中提取的EO不会对网眼假单胞菌造成伤害,D.indicus(水虫),G.affinis和若虫(蜻蜓)。GC-MS分析确定了油的主要可能成分,包括苯酚,2-甲氧基-4-(1-丙烯基)-(28.29%);1-甲基-3-(1'-甲基环丙基)环戊烯(46.46%);(E,E,E)-3,7,11,15-四甲基十六烷-1,3,6,10,14-戊烯(18.91%)和1,3-异苯并呋喃二酮,3a,4,7,7a-四氢-4,7-二甲基(33.02%)。这些成分可能在油的灭蚊活性中起重要作用。在由EO制备的制剂中鉴定出相同的结果。这标志着第一份报告证实了在蚊子种群控制计划中成功利用了来自O.tenuiflorumL.和O.americanumL.的EO。
Mosquitoes stand out as the most perilous and impactful vectors on a global scale, transmitting a multitude of infectious diseases to both humans and other animals. The primary objective of the current research was to assess the effectiveness of EOs from Ocimum tenuiflorum L. and Ocimum americanum L. in controlling Anopheles stephensi Liston. Culex quinquefasciatus Say and Aedes aegypti L. mosquitoes. The larvae, pupae and eggs of the mosquitoes were exposed to four different concentrations (6.25-50 ppm). The tested EOs resulted in >99-100 % mortality at 120 h for the eggs of all examined mosquito species. It also showed robust larvicidal and pupicidal activity with LC50 and LC90 values of 17-39, 23-60 ppm and 46-220, and 73-412 ppm against Aedes, Culex and Anopheles mosquito species, respectively, at 24 h of treatment. The Suitability Index or Predator Safety Factor demonstrated that the EOs extracted from O. tenuiflorum L. and O. americanum L. did not cause harm to P. reticulata, D. indicus (water bug), G. affinis and nymph (dragonfly). GC-MS analysis identified the major probable constituents of the oil, including Phenol, 2-Methoxy-4-(1-Propenyl)- (28.29 %); 1-Methyl-3-(1\'-Methylcyclopropyl) Cyclopentene (46.46 %); (E,E,E)-3,7,11,15-Tetramethylhexadeca-1,3,6,10,14-Pentaene (18.91 %) and 1,3-Isobenzofurandione, 3a,4,7,7a-Tetrahydro-4,7-Dimethyl (33.02 %). These constituents may play a significant role in the mosquitocidal activity of the oil. The same results were identified in the formulation prepared from the EOs. This marks the first report confirming the successful utilization of EOs derived from O. tenuiflorum L. and O. americanum L. in mosquito population control initiatives.