Asimeng E J, Mutinga M J
Medical Vectors Research Programme, International Centre of Insect Physiology and Ecology (ICIPE), Nairobi, Kenya.
J Am Mosq Control Assoc. 1993 Mar;9(1):17-22.
A study was carried out at Mwea Rice Irrigation Scheme, Kenya, to assess the impact of rice husbandry on mosquito breeding and identify indigenous biocontrol agents with potential for controlling mosquito breeding in the scheme. The study established a close relationship between the schedule of the farming practices (particularly the flooding phase) and mosquito breeding. Two groups of agents, entomopathogenic bacteria (Bacillus thuringiensis var. israelensis) and larvivorous fish, were identified. Laboratory evaluation of the agents produced encouraging results. The bacterial isolates showed broad-spectrum larvicidal potency against Anopheles, Culex and Aedes mosquito larvae and 2 of the fish species, Tilapia zilli and Oreochromis niloticus, demonstrated a strong predation for a mosquito larval diet. To facilitate their use in effective biocontrol strategies, the agents would require further evaluation under field conditions.
在肯尼亚的姆韦亚水稻灌溉区开展了一项研究，以评估水稻种植对蚊子繁殖的影响，并确定具有控制该灌溉区蚊子繁殖潜力的本土生物防治剂。该研究确定了农事安排（特别是淹水阶段）与蚊子繁殖之间的密切关系。确定了两类生物防治剂，即昆虫病原细菌（苏云金芽孢杆菌以色列变种）和食蚊鱼。对这些生物防治剂的实验室评估产生了令人鼓舞的结果。分离出的细菌对按蚊、库蚊和伊蚊幼虫显示出广谱杀幼虫效力，两种鱼类，即吉利罗非鱼和尼罗罗非鱼，对蚊子幼虫食物表现出强烈的捕食行为。为便于在有效的生物防治策略中使用这些生物防治剂，需要在田间条件下对其进行进一步评估。
