幼体

It has certain changes in the structure of the population that juvenile and subadult reduce the proportion and aged adult has an increasing proportion.The number growth speed is gradually slowing down;so,the need for further increasing the level of environmental capacity is necessary.

种群结构具有一定的变化，幼体和亚成体所占比例逐渐减少，老成体比例有所增加，说明种群增长速度正在逐渐减缓，接近环境容纳量水平。4。

The results suggest that HUFA, mainly EPA and DHA, in the Monodus subterraneous can be transferred effectively to the larvae during the breeding process.

表明蒜头藻的脂肪酸，特别是EPA、DHA在育苗过程中能通过食物链有效地传递给溞状幼体。

Results showed that sulfapyridine, tricyclazole, sulfadiazine and imazalil at low concentration（0.01mg·L-1） have the highest relative lethality rate to swelling of insemination membrane, two cells, swimming blastula and prism stage, respectively, which were 3.70%, 6.19%, 5.84% and 6.07%, respectively.

实验浓度下，磺胺吡啶、三环唑、磺胺嘧啶和抑霉唑分别对受精膜举起期、2细胞期、上浮囊胚期和棱柱幼体期相对致死率最高，分别达到3.70%、6.19%、5.84%和6.07%。

The joint toxicity of two toxicants to swordtail fish was synergistic in 24h and antagonistic in 48h and 96h, both were treated as ratio 1∶1 of toxi...

剑尾鱼对Hg和Se的最大容许浓度分别为：0.0084和0.064 mg/L。结果还表明：剑尾鱼幼体对Hg和Se敏感，是一种较理想的环境污染指示生物。

A structure of delicate,threadlike filaments characteristically spun by spider s or certain insect larvae.

虫网由线状的丝构成的精致组织，最典型的是蜘蛛或某些昆虫的幼体吐出的组织

Acute toxicity test of lead(Pb2+) and cadmium(Cd2+) to Babylonia areolata veliger larvae were studied in this research.

在水温28.4-30.4℃的条件下，分别研究了重金属铅、镉对方斑东风螺幼体的急性毒性影响。

The safe concentration of lead and cadmium to B.areolata veliger larvae were also estimated to be 0.107 mg·L-1,0.020 mg·L-1 respectively.

估算得到铅、镉对方斑东风螺幼体的安全浓度分别为0.107 mg·L-1、0.020 mg·L-1。

Specific activities of protease,lipase,amylase and cellulase of Babylonia areolata Link were measured respectively at 6 different stages from early veliger to juvenile 15 days after metamorphosis.

将方斑东风螺Babylonia areolata的早期发育从早期面盘幼体到变态后15d的稚贝分成6个阶段，分别测定各阶段蛋白酶、脂肪酶、淀粉酶和纤维素酶活性。

The fish larva has already hatched from the egg, but has not started feeding yet and still absorbs the yolk in the ventrally attached yolk sac.

鱼幼体已经从卵孵化，但是仍然没有开始觅食而继续吸收附著在腹部的卵黄囊。

Vivipara under different weather conditions all showed two peaks, there still existed differences in the beginning and standing time of their activities, the appearing and standing time of the activities peaks, and the values of the peaks. In fine days, the beginning time of the activities was earlier, and the duration and interval time were longer; while in cloudy days, the duration for activities was shorter, and the appearance frequency of activities peaks was higher. The males devoted more time to activities and appeared more at activities peaks than the females, while the juveniles began activities later and appeared lesser than the adults.

不同性别、年龄和天气条件下胎生蜥蜴的日活动节律均为双峰型，但各种活动开始和持续的时间、活动高峰出现和持续时间以及峰值方面存在差异，晴天时胎生蜥蜴开始活动的时间早，2次活动高峰的持续时间及间隔时间长，而阴天时胎生蜥蜴的活动时间短且集中，在活动高峰时的个体出现率高；雄性比雌性的活动时间长，出现率高，幼体开始活动的时间比成体晚，出现率低。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。