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为明确温度对早熟禾拟茎草螟Parapediasia teterrella(Zincken)生长发育和繁殖的影响,在室内采用两性生命表方法研究了不同恒温条件下(19、22、26、30、33℃)该虫各虫态的发育历期和繁殖力,并组建了该虫在不同恒温下的年龄–龄期两性生命表。结果表明:早熟禾拟茎草螟的发育历期、成虫寿命随温度的升高而缩短,繁殖力则随温度升高呈先增加后减小的趋势;33℃下,早熟禾拟茎草螟总发育历期最短为23.8 d;26℃和30℃下繁殖力最高,平均分别为283.5粒和265.4粒。早熟禾拟茎草螟世代发育起点温度和有效积温分别为14.6℃和420.0日度;平均世代周期随温度升高而缩短,内禀增长率、周限增长率和净增殖率随着温度升高呈先增加后减小的趋势,内禀增长率、周限增长率在30℃下最大,分别为0.14和1.15,净增殖率在26℃下最大为63.64。表明早熟禾拟茎草螟种群生长繁殖最适宜的温度范围在26~30℃之间。
In order to clarify the effect of temperature on the growth and reproduction of Parapediasia teterrella (Zincken), the insecticide The developmental stages and fecundity of the worms were also studied. The age-age-specific sex life tables of the insects at different temperatures were also established. The results showed that the developmental duration of Stem Borer, the life span of adults was shortened with the increase of temperature, and the fecundity increased firstly and then decreased with the increase of temperature. At 33 ℃, the total development of Stem Borer The shortest duration was 23.8 days, and the highest fecundity at 26 ℃ and 30 ℃ was 283.5 and 265.4, respectively. The starting temperature and effective accumulated temperature of the generation of Psitettosporella prematulae were 14.6 ℃ and 420.0 days, respectively. The average generation period shortened with increasing temperature, and the intrinsic rate of increase, the rate of peri-growth and the rate of net increase were the highest Increase and then decrease, the intrinsic rate of increase and the rate of peri-growth are the largest at 30 ℃, 0.14 and 1.15 respectively, and the maximum net growth rate is 63.64 at 26 ℃. The results showed that the most suitable temperature range for growth and reproduction of M. przewalskii was between 26 and 30 ℃.