摘要
本文利用广西中剑水蚤(暂定,简称桂剑蚤Mesocyclops sp)与M.aspericornis(法国)和M.darwins(澳大利亚)作对比,在实验室里做了不同温度的繁殖力、对不同蚊种的吞食力和模型试验。结果:它们在25～35℃之间繁殖力最佳;对埃及伊蚊(Aedes aegypti)、致乏库蚊(Culex guinquefasciatus)和法老按蚊(Anopheles farauti)等幼虫都能吞食达82%以上。M.aspericornis对三种蚊幼吞食最佳,几乎达100%。在模型实验中,实验组桂剑蚤自第3周后数量不断增加,至第6周后完全抑制了蚊幼,成蚊也不断减少,于第11周无成蚊存活;而对照组从第2周起蚊幼与成蚊不断增加,第11周后仍然较多。该剑水蚤耐盐量在4%以下,对pH适应度为6.0～10.0。
Mesocyelops guang xiensis (Sp. to be identified) compared with M. aspericornis(French) and M. darwini(Australia) for its potential biocontrol effect in laboratory. The much more. suitable temperatures range for its population multiply are between 25℃～35℃. After 72 hrs larvae of Aede aegypti, Culex quinquefasciatus and Anophles farauti will be suffered 82%～100% mortality. In the experimental cage, the copepod population increased exponentially in response to its abundant larval food source. Within six weeks, the mosquitoes larvae will completely controlled by the copepods, then, the adult mosquitoes will decreased to zero within eleven weeks. In the control cage, immature and adult mosquitoes rose to a point of equilibium, where their population sise were determi- ned by food levels and spatial limiting. The range of tolerabilities of salinity and pH are from 0～4‰, 6.0～10.5 respectively which make all Mesocyclops in a good condition as a biocontrol agent for mosquito larvae.
出处
《中国媒介生物学及控制杂志》
CAS
CSCD
1990年第5期259-263,共5页
Chinese Journal of Vector Biology and Control
关键词
蚊虫
生物防治
中剑水蚤
M. guangxiensis (sp. n) Gui M. aspericornis M. darwini Aedes aegypti Culex quinquefasci-atus Anopheles farauti Biocontrol
