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Extensive field data showed that the B biotype has gradually displaced some indigenous biotypes of this species complex in many regions of invasion.

大量的野外调查表明,在许多入侵地,B型烟粉虱在入侵过程中逐渐取代了土著烟粉虱。

Broad and high resistance genes against brown planthopper derived from resource "2183" of Guangxi common wild rice, Oryza rufipogon Griff were tagged and mapped in this study. Genetic homozygous resistance material,"2183 "was obtained by anther culture technique and used to cross with TN1, a susceptible rice variety.

本研究选用对稻褐飞虱具有广谱高抗性的普通野生稻资源"2183"为试验材料,通过花药培养获得抗性纯合体,与感虫性材料TN1杂交和测交,获得TC_1F_2作图群体,用稻褐飞虱生物型2对群体进行抗性鉴定。

For the diehard Tainan folks, the milkfish head is another good eat.

有耐心又不怕虱目鱼小刺的人还可以点虱目鱼头喔!

The Taipei fish wholesale market with a largest trading share appears to cause the greatest leadership impact on the price formation of milkfish in the other horizontally-related fish wholesale markets both in the long-run and short-run.

台北为台湾地区最大鱼货批发市场,其虱目鱼批发价格具有价格领导特性,无论长期性或短期性而言,对其他水平性相关鱼市场虱目鱼价格形成均产生较大幅度的影响力。

Recently, competitive displacement of pre-existent biotypes and other herbivores by the B. tabaci B biotype has been observed in many regions worldwide.

近年来,在许多地区发现B型烟粉虱竞争取代非B型烟粉虱和其他害虫的现象。

Pear leaf psylla psylla pyrisuga Forster were fed on Pyrus pyriforis Nakai leaves at 20-30℃and at 60-90% of relative humidity with 25℃. The results showed that the optimuM temperature for the development of the eggs,nymphs and the whole generation was shown to range from 20. 0-22.5℃, 22.5-25℃. and 22. 5-25℃, respectively. The optimun temperature for the reproduction of the female adults was 25℃.

以砂梨叶作饲料,研究了20、 22.5、 25、 30℃四种温度和在25℃条件下,60%、70%、80%、90%四种相对湿度对梨木虱Psylla pyrisugaForster生长发育和繁殖的影响,结果表明梨木虱卵期、若虫期和全世代生长发育最适温度分别为20-22.5℃,22.5,25℃和22.5-25℃,雌成虫繁殖最适温为25℃。

Asian citrus psyllids in the feeding process pd wave does not appear, from this point speculate Asian citrus psyllids lower lip and stylet have developed chemical receptors.

而在亚洲柑桔木虱整个取食过程中pd波并未出现,从此点推测亚洲柑桔木虱下唇和口针上有发达的化学感受器。

Type genus of the Cimicidae: bedbugs .

床虱科的模式属;床虱。

The synergism ratios of piperonyl butoxide to alpha-cypermethrin in these three strains were similar(about 20-fold), which suggested metabolic detoxification probably confers about 20-fold inherent resistance in the B-type whitefly, as PBO is a mixed function oxygenase and esterase inhibitor and glutathione S-transferase is not affinity to resistance in B. tabaci. The synergism ratio of triphenyl phosphate to alpha-cypermethrin in the NJ strain was 12-fold, which implied the synergism of PBO in the B-type whitefly is mainly due to inhibiting esterase activity.

增效试验表明PBO对这三个品系的增效作用均为20倍左右,因为在烟粉虱中PBO即是多功能氧化酶抑制剂,也是酯酶抑制剂,而谷胱甘肽S-转移酶与抗性无关,因此推断代谢酶在B型烟粉虱对高效氯氰菊酯的抗性发展中起到的相对作用可能为20倍左右,而且这种抗性是B型烟粉虱天生的;TPP对NJ品系的增效作用为12倍,说明PBO增效作用主要是由于抑制酯酶而引起的,即代谢抗性大部分由酯酶所贡献。

An ape of the family Pongidae.

床虱科的模式属;床虱。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力