无节幼体

Increased number of both total and granular haemocytes at nauplius I stage impressed a possible enhancement of the immune system as the embryogenesis progressed.Ⅱ.

在无节幼体Ⅰ期样品中，血细胞总数和大颗粒细胞数量较胚胎期都显著增加，反映了对虾免疫系统随着胚胎发育的进行而加强。

Fc-vasa mRNAs were detected by RT-PCR in early developmental stages from 2-cells embry to intramembranous nauplius, and not in any stages after nauplius. Based on above results, it is postulated that Fc-vasa is required for germ cell determination and formation of F. chinensis as a maternal component.

但表达量逐渐降低，自出膜后的无节幼体开始检测不到表达信号，根据以上结果推测，Fc-vasa mRNA可能作为母源生殖质成分参与中国明对虾生殖细胞的决定和形成。

During the breeding process of Penacus vannamei,the PCR and RT-PCR techniques are applied to detect three types of virus,that is,WSSV,IHHNV,TSV,to protect the parental shrimp,egg,nauplius,parental shrimp feed,artemia and water from being infected.The purpose of this work is to breed the healthy Penacus vannamei,and to offer a feasible measure to keep a sustainable development for Penacus vannamei breeding.

应用PCR和RT-PCR技术对WSSV、IHHNV和TSV这3种对虾病毒在凡纳滨对虾育苗过程中各个环节进行了检测，防止亲虾、卵、无节幼体、仔虾、亲虾饵料、丰年虫、水体等诸环节受到以上3种病毒携带或感染，保证培育出的凡纳滨对虾仔虾是高健康的虾苗，为凡纳滨对虾健康养殖的可持续发展提供一条可行的途径。

Biological Activated Carbon Filter could provide ideal habitats for invertebrates, but invertebrates may lead to aesthetic problems and adverse health effects of drinking water. This paper studied the invertebrates in biological activated carbon filters in a water plant of the south of China during Sep. 2006 to Sep. 2007. The results implied that BAC filters were colonized by invertebrates, in which 23 species of invertebrates were found, the dominating organism group was the rotifer, and others included Copepoda, Cladocera, Oligochaeta, Nauplii and Nematoda.

生物活性炭(Biological activated carbon， BAC)滤池能够为无脊椎动物提供理想的生境，但无脊椎动物可能给饮用水带来负面的健康效果和感观问题。2006年9月～2007年9月，对南方某水厂BAC滤池无脊椎动物滋生状况进行了为期13个月的调查研究，共发现无脊椎动物23种，优势类群为轮虫，其他类群还有桡足类、枝角类、寡毛类、无节幼体、线虫等。

The effect of polyhexamethylene biguanide and Sodium dichloroisocyanurate on zygote and nauplii of Fenneropenaeus chinensis was studied.

用PHMB对中国对虾受精卵和无节幼体进行消毒处理，并与二氯异氰尿酸钠进行比较。

The biomass of zooplankton changed relatively intensely, especially Cladocera、Copepoda and Young animal, and the biomass of the zooplankton will gradually increase.

随着泥沙的逐渐沉降，浮游动物生物量变化相对激烈，尤其是枝角类、桡足类和无节幼体，水中浮游动物生物量将逐渐增加。

Newly hatched larvae known as nauplii Daphnia morphology similar to that after four times after the camp molt parasitic life.

刚孵化的幼虫称为无节幼体，形态与水蚤相似，经过4次蜕皮后开始营寄生生活。

First, to decrease the potential for bacterial attack on emerging nauplii, the Bagshaw et al.

首先，以减少可能出现的细菌攻击无节幼体的巴格肖等。

The salinity endurance of nauplii is vital to the population recruitment under salinity fluctuation, and then affects its ecological distribution.

在盐度变化的环境中无节幼体的耐盐能力是决定其群体增殖量的主要因素，并进而影响其生态分布。

The metamorphosis rate of nauplii was generally higher at salinities of 20-30 ppt at all temperatures.

通常盐度在2030ppt的情况下，各种温度条件对无节幼体的变态率都很高。

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。