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There was a stable and relatively low expression level for Lbα1 and a progressive expression pattern for Lbα8 among the 1st,2nd,3rd,and 4th nymphal stages.5 Development and reproduction of L.decolor as a function of temperatureThe developmental rate,survival,intrinsic rate of increase,net reproductive rate(R_0),mean generation time,and population doubling time of L.decolor population were evaluated at eight constant temperatures.

Lb a1在1龄、2龄、3龄、4龄若虫及成虫中的表达水平分别是Lb a8的2.03、2.55、4.77、6.54、和5.28倍，且它们之间的差异均达到显著水平(P＜0.05)。5温度对无色书虱发育和繁殖的影响通过比较无色书虱在不同温度条件下的发育速率、存活率、内禀增长率等生命参数以明确无色书虱在不同温度条件下的发生发展规律。

However in Hachijo population, nymphal development was the fastest under LD 12:12h, followed by LD 14:10h and the slowest under LD 16:8h. Nymphal growth is restrained when the nymphs are transferred from LD 16:8h to LD 12:12h at 60 and 120 days after hatching, rapid development is observed when nymphs were transferred in the opposite direction in Hachijo population.

八丈岛种群的若虫在短日条件下发育最快，其次是中间日长，长日条件下若虫发育最慢，孵化后60d或120d将若虫自LD 16：8h向LD 12：12h转移抑制若虫发育，反方向转移的若虫快速发育。

The effect of temperature on the population growth of Brachionus calyciflorus from the Nanhu Lake was studied at 15, 25 and 35℃ by population accumulative culture. The rotifer was fed with Scenedesmus obliquus at a concentration of 5.0×10^5 cells/mL.

应用群体累积培养法，以浓度为5.0×l0^5 cells/mL的斜生栅藻为食物，研究了温度（15、25和35℃）对南湖水体萼花臂尾轮虫种群增长的影响。

This essay offers an analysis on both the problems caused by usin g permanent residents as the total population quota in the assessment of GDP per c apita and its reasons as well. Amendments are put forward that present populati on be used as the total population quota. Meanwhile, a comparison between the f ormer GDP per capita and amended GDP per capita is provided.

文章对我国人均 GDP核算中用常住人口作为人口总数指标出现的问题及其原因进行了分析，然后提出了用现有人口作为人口总数指标的修正方法，并对修正前后的人均GDP进行了比较分析。

Levels of genetic variation at 11 genic loci in Ostrea edulis have been determined by starch gel electrophoresis and compared between natural population from Ireland and hatched population from Wales.

沈琪用淀粉凝胶电泳检测和比较了采自爱尔兰自然群体和威尔士养殖群体的欧洲牡蛎 Ostreaedulis 11个基因位点的遗传变异。

Considering the bud of Platycarya longipesas basic unit of modular population,the bud population structure of sample trees, which were 8-12 years old and located at different places on slope in karst area in the middle of Guizhou province, was studied.

以圆果化香植株的芽为基本构件单元，对贵州中部喀斯特山地不同坡位上8-12年生植株的芽种群结构进行研究，结果表明：圆果化香芽种群芽总量分配随枝级发生变化，芽数量最多的枝级为树冠中间部位的二级或三级枝，树冠表层的末生枝和紧靠树干的一级枝芽数量较少。

Plutella xylostella Granulosis Virus; life table ; index of population trend ; index of population control

小菜蛾；小菜蛾颗粒体病毒；生命表；种群趋势指数；控制指数

Meanwhile, population saturation leds to the Fate of Malthus. Through technological advancing, Western Europ escapes from the Fate of Malthus. The increation of population promote the development of romote areas. The difference of natural conditions and populational density between the new ares and the old areas have people produce different products. In addition, the portages by warter cost cheap, that stimulates market developing.

西欧通过技术进步率先摆脱了&马尔萨斯宿命&，诺思用&人口模型&解释了西欧这一重大的历史变迁：人口增长导致边远地区的开垦，新老地区不同的自然条件和人口密度使人们生产了不同的产品，加上水路运费低廉，刺激了商品市场发展。

Africa is the world 's second largest continent in both area and population.its are is more than three times the size of the united states,and its population makes up 12 precent of the world's total.

在人口和面积上看，非洲算是世界第二大洲了。他的面积比美国的3倍还要大，而的人口是世界人口的12%。

Whats more ,the disquisition depicts the different pattern of urbanization in the world.points out the influence of urbanization to society development and concludes that there is a protrudent phenomenon that the population in rural area continuously transfers into the city called the population urbanization..

本文首先对城市化的概念、类型及水平测定进行了归纳总结，描绘了世界城市化进程中的三种不同状态，并指出了城市化对社会发展所产生的影响。

Anna: No, I've got a hangover.

不是，我昨晚宿醉了。

We head into the mountains in Su's new Land Cruiser, stop for lunch at a scenic restaurant and then hang around drinking beer and eating fruit as two of his employees attempt to lure the birds with a tape recording of the fowl's mating call.

我们坐上苏的巡逻车向山顶出发，在一家风景优美的餐馆吃了中饭。然后我们喝着啤酒吃着水果四处逛。