胡瓜新小绥螨和尼氏真绥螨生物学特性比较研究

Journal of Environmental Entomology(2013)

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Abstract
胡瓜新小绥螨Neoseiulus cucumeris和尼氏真绥螨Euseius nicholsi是重要的捕食性天敌,其中前者为引进种类,后者为本地种类。本文在室内25℃条件下,以粉螨为食料饲养胡瓜新小绥螨,以二斑叶螨为食料饲养尼氏真绥螨,组建生殖率表,结果表明:胡瓜新小绥螨的产卵量(平均36.35±5.56粒/雌)、內禀增长率(rm=0.0942)、周限增长率(λ=1.0988)均高于尼氏真绥螨的平均产卵量29.78±3.11粒/雌、内禀增长率rm=0.0827、周限增长率λ=1.0863,且种群倍增时间(t=7.35d)也较尼氏真绥螨(t=8.38d)短。通过各参数的比较,在恒温25℃条件下,胡瓜新小绥螨具有较大的生殖潜力。在以桔全爪螨为食料,进行混合饲养时,两种捕食螨的种群增长均受到抑制,而尼氏真绥螨受到的抑制更明显。说明胡瓜新小绥螨竞争力强于尼氏真绥螨。
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Key words
Euseius nicholsi,intrinsic rate of increase,Neoseiulus cucumeris,biology,competition
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