幼体

The least paedomorphic behavior pattern may be that of the basenji , bred in Africa to hunt alongside humans almost on a peer basis; this breed is often described as highly independent, neither needing nor appreciating a great deal of human attention or nurturing, often described as "catlike" in its behavior.

证明狗是从狼快速进化的一个例证是狗是性早熟或幼态持续的。跟大多物种一样，如小狼比起成年狼更偏向群居和比较少的具有支配力；因此，当进行优选时，不管是有意或无意的，最终的结果看来似乎是把这种幼体的特性带入了成年种群中，而非产生一个复杂的独立新行为。对包括人类自身的许多驯养动物皆是如此，人类很多特征与幼倭黑猩猩类似。这种幼态持续选择的结构自然是导致了幼体生理特征的保留。

These PUFAs are considered to be essential to many marine animals such as fish, brine shrimp and shellfish.

它们在水产养殖中对鱼、虾、贝幼体的生长和发育极为重要，缺乏EPA和DHA会造成幼体生长迟缓和大量死亡。

In copepod, Thermocyclops taihokuensis and Mesocyclops thermocyclopoides were dominant, and their average lengths were 730μm and 680μm, respectively. Nauplii and cyclopoid copepodites also had high abundance and biomass.

桡足类优势种为台湾温剑水蚤和温中剑水蚤，平均体长介于680~730μm之间，此外，无节幼体和剑水蚤幼体在数量和生物量上也比较高。

The invention discloses a method for cultivating river crab, comprising the following steps: choosing China crab as parent crab, temporary culturing female and male crab separately, then mating; culturing the crab with ovum at temperature under 5 Deg C for more than 2 months; the crab with ovum producing out ovum and the ovum growing into flea larval, megalops larva, young crab, crab strain and adult crab.

本发明是河蟹的养殖方法，包括以下步骤：选择长江系中华绒螯蟹为亲蟹，将雌雄亲蟹分开进行暂养后，进行交配；对抱卵蟹在水温5℃以下饲养2个月以上；抱卵蟹产出卵，生成蚤状幼体，长成大眼幼体；在经仔蟹，长成幼蟹、蟹种再到成蟹。

The developmental stages,six nauplius and five copepodid stages,excepting the adult,of Temora turbinata are described and illustrated.

本文描述锥形宽水蚤的6个无节幼虫期和5个桡足幼体期的主要形态特征，并绘制各期幼体图版。

Its distribution in this area was relatively extensive, the appearing frequency from 5 to 12m was very high and there was certain biomass. The length of young Branchiostoma belcheri from June to August was 1.3mm-7.8mm. From August, it metamorphosed and shifted to the bottom life.

该水域的文昌鱼幼体分布面较广，从5m到12m深面上均有很高的出现频率和一定的生物量。6-8日间文昌鱼幼体体长为1.3mm-7.8mm，进入8月份后，幼体变态转入底栖潜沙生活。

In C. indicus, the infected mechanism correlated with season. The infusoriform larvae of dicyemid mesozoan dispersal from the host to sea water in the autumn and winter, then entering host in the spring and summer. The change of dicyemid life cycle stage in the C. indicus kidney correlates with the sharp decrease of infection intensity. However, the dicyemid infection in Octopus marginatus correlates with body size, not with season.

在C。 indicus之分析中可发现，中生虫之感染与季节有关，有性幼体於秋、冬季自寄主章鱼体内扩散至外界，并於春、夏季大量进入寄主，接著在寄主体内发展，每一次生活史之时期转变，伴随著感染强度之骤降，直至成熟之菱形体时期，大量有性幼体出现肾腔中，至秋季有性幼体随寄主尿液排至外界，下一个生活史之循环接著开始。

The comparative experiments of rearing Penaeus vanname larvae fed the microencapsulated diets and micro-partical diets of "OK" brand and a searies of microgranular diets of "Bonasse" brand was performed. Two brands of diets are respectively formulated with rotifera at percentage of 70%, 80%, 90% and 100%. During the nursery period, the water quality factors such as the concentrations of NH3-Nt, NH3-Nm, NO2-- N, COD and main planktons were tested to find out their change regulation and the influence on survival rates and metamorphic rates of shrimp larvae.

本文利用欧开牌微胶囊饲料、微粒饲料和博尚牌系列微型饲料作为对虾育苗饲料，分别以70％、80％、90％和100％的比例与卤虫活饵料配合来培育凡纳对虾幼体，通过对凡纳对虾幼体有关生长发育指标的对比以及对育苗期间水中总氨氮(NH_3-N_t)、非离子氨氮(NH_3-Nm)、亚硝酸盐氮(NP_2~--N)、化学耗氧量和主要浮游生物等水质因子进行检测，找出它们的变化规律并比较上述饲料对幼体生长发育、成活率、变态率和育苗效果的影响。

The protocerebrum was composed of lamina ganglionaris, lateral protocerebrum and medial protocerebrum at the egg-zoea stage Ⅱ, and olfactory lobe appeared and arranged beside the esophagus with deutocerebrum and tri...

光镜下大颚神经节可于第二期卵内无节幼体阶段观察到，2对小颚和2对颚足神经节则在第二期卵内状幼体阶段观察到；腹部神经链则在第三期卵内状幼体阶段观察到。

Eggs or nauplii I, hatched under optimal conditions (30°C, 30 ppt), were incubated under 15 different combinations of three temperatures (20°C, 25°C, and 30°C) and five salinities (15 ppt, 20 ppt, 25 ppt, 30 ppt, and 35 ppt) until reaching protozoea I stage.

中文摘要：本研究在探讨温盐对中型毛虾无节幼体变态之影响。在三种温度（20、25及30℃）和五种盐度（15、20、25、30及35ppt）的十五种组合中，观察在最适当状况下（30℃、 30ppt）孵化的卵或无节幼体变态成蚤状幼体第一期。

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。