作　　者： ; ;

机构地区： 中国科学院动物研究所

出　　处： 《生物防治通报》 1989年第4期153-156,共4页

摘　　要： 拟长毛钝绥螨在18、22、26、30和34℃5种恒温下,卵和若螨的发育历期随温度的上升而加快,依次为12.58、8.79、5.72、3.66和3.54天。成螨的产卵前期,产卵期和寿命亦随温度的升高而缩短。成螨一生中有多次交配习性,产卵置随交配次数而增加,交尾3次的产卵68.24粒。在26℃下,该螨一生能捕食372.79粒叶螨卵,其中成螨期捕食量占总捕食量的98％,以产卵期捕食量最高。雌成螨发育和繁殖的最适温度为30℃,卵在90％高湿下孵化率达100％。温度为30、34℃时,卵完全致死的湿度范围为70％以下,而在18～26℃则为60％以下。致死低温对卵的临界作用期位于幼螨即将破壳而出的发育阶段。 The life history of A. pseudolongispinosus was studied, at five different constant temperatures to construct its life tables. The intrinsic rates of natural increase were 0.0936, 0.1425, 0.1970, 0.2748, and 0.2638; net reproductive rates: 21.20,26.76, 29.85, 33.11, and 28.21; and mean generation times: 32.63, 25.30, 17.24, 12.76 and 12.67 days at 18, 22, 26, 30 and 34℃, respectively. The durations of preoviposition, oviposition, postoviposition and adult longevity declined with increasing temperature, while the mean total and daily fecundity increased. Multiple mating was found to be necessary for the female adult to achieve the maximum fecundity. The female adult maintained the maximum predation during the 2nd-loth day after the first mating. The egg hatching of the predator at different relative humidities and temperatures were also studied. A 100% egg hatching was obtained at 100% RH. The crucial developmental period of the eggs to low relative humidity was on the verge of shell-breaking stage.

关 键 词： 拟长毛钝绥螨 生物学 叶螨 天敌

领　　域： [农业科学] [农业科学]