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The indrect flight muscles in macropterous nymphs developed rapidly while those in the brachypterous were suppressed after this critical period.

分化发生之后,长翅型若虫的间接飞行肌正常发育,短翅型若虫间接飞行肌的发育则被抑制。

The preventing and controlling best time in the nymphae time,Dactylopius confusus\'s nymphae time in the end of February and at the beginning of March,is generally good in this time preventing and controlling effect,simultaneously must pay attention to each medicament to gather the theory with and mixes uses,delays its antibiotic production.

防治的最佳时期一般在若虫期,胭(来源:5cABC论文网www.abclunwen.com)脂虫的若虫期在2月底3月初,在此时期防治效果较好,同时要注意各种药剂的合理轮用及混用,以延缓其抗药性的产生。来源:A0424B42C论文网www.abclunwen.com

The rate of death and development duration of 1st instar,2nd instar,adult female,pre—oviposition and onegeneration of Dactylopius COCCU~Costa were studied under constant temperature.

在不同温度条件下测定了胭脂虫一龄若虫,二龄若虫,成虫,雌成虫产卵前期及全世代的死亡率和发育历期。

Medicament to Dactylopius confusustoxicity mensurationFive medicament to Dactylopius confusus1~age nymphae,2_age nymphaes,the female prosopon\'s toxicity mensuration,the result indicated that,These five medicament are consistent to various insects\' condition toxicity size order.10% Imidacloprid has the highest toxicity tovarious insects\' instar,other are in turn 36% Cypemethrin,48%Chlopyrifos,4.5%Beta-cypermethrin,1.8%Avermectin toxicity is lowest.

药剂对胭脂虫毒力测定五种药剂对胭脂虫一龄若虫、二龄若虫、雌成虫的毒力测定结果表明:这五种药剂对各虫态的毒力大小顺序一致。其中10%吡虫啉对胭脂虫各虫态的毒力最高,其它依次为36%马拉硫磷、48%毒死蜱、4.5%高效氯氰菊酯、1.8%阿维菌素的毒力最低。

By fitting the models of semivariogram of them and analyzing the patterns, it was found that the nugget range of macropterous SBPH and larval SBPH were approaching to that of spiders, as well as the range of structural intensity, but the nuggets of SBPH were not approaching to that of spiders, neither the structural intensity. The spatial pattern of larval SBPH and spiders were aggregation, but that of macropterous SBPH was random sometimes.

通过变差函数模型的拟合及空间格局的分析,得出灰飞虱长翅成虫、若虫与蜘蛛的变程范围相近,结构性强度的范围相近,但同一时间灰飞虱与蜘蛛的变程和结构性强度则均不尽相同;灰飞虱若虫与蜘蛛自始至终为聚集分布,但灰飞虱长翅成虫与蜘蛛的分布型则有差异,在某些时间为均匀分布。

We drawn the predicted surface maps with the Ordinary Kriging method and illustrated in the time order to provide a visible presentation of the spatio-temporal distributions. By analyzing those maps, we found that the spatial distribution of spiders in the paddy field was similar to that of macropterous SBPH and larval SBPH, and was more similar to larval SBPH, and showed an obvious pursuing phenomenon between them, while the pursuing had a close relationship with the temporal dynamics of SBPH number. But the pursuing phenomenon was complex and influenced by factors such as the weather, the environmental conditions in paddy fields, other enemies of SBPH and other foods of spiders.

用普通克立格方法作出空间分布图,在时间序列上进行比较分析,得出稻田蜘蛛与灰飞虱成若虫的空间分布均有相似性,尤其与若虫相似性更强,表现出比较明显的空间跟随现象,且空间跟随现象与灰飞虱虫量的消长有密切的关系,但是由于天气、稻田环境、灰飞虱其他天敌以及蜘蛛其他猎物的存在等因素的影响使得其空间跟随又有着相当的复杂性。

Just hatched nymphae\'s,had the aggregated habit,the most nymphaes often gathered in together,crawled to the host cactus\'s peak,sought the new stem piece, derived the new nutrition.

刚孵化的若虫,具有群集习性,多数若虫常聚集在一起,爬到寄主仙人掌的顶端,寻找新的茎片,以汲取新的营养。

The mean duration of nymphal development is 60 days in constant long phtopheriod(LD 16:8h) at 30℃.But the mean duration of nymphal development is over 120 days in constant short phtopheriod(LD 12:12h) at 30℃.

在30℃连续长日(LD 16:8h)条件下,小悍蟋若虫60日内全部供试个体完成羽化,而在连续短日(LD12:12h)条件下,小悍蟋若虫120日内仍只有90.7%的个体完成羽化。

Effects of photoperiod on nymphal development were investigated in two subtropical populations of Periplaneta japanna living on Naha, Okinawa Islands (26N) and Hachijo island (N33N), Japan.

为弄清光周期对一种亚热带蜚蠊若虫发育的控制机理,检测了光周期对冲绳(26°N)和八丈岛(33°N)两个地理种群若虫发育的影响。

Impacts of transgenic rice lines on biological characteristics of Microvrlia horvathi Nymphal duration of Microvrlia horvathi fed with young instar of BPH nymphs feeding on Bt rice after hatching was not significantly different from that feeding on Xiushui 11 control.

七、转基因抗虫水稻对尖钩宽黾蝽生物学特性的影响饲喂转基因水稻或对照品种上饲养的褐飞虱,两种转基因水稻处理组的尖钩宽黾蝽各龄若虫历期和整个若虫期与它们各自的对照都无明显差异。

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