zoea

In the PA treatment of pregnant crabs with fertilized eggs , the experiment results are as follows : the highest induction rate are 80.18 % in gastrula and 27.29 % in zoea .

将抱卵蟹浸入PA液进行处理，受处理卵培育至蚤状幼体检测，最高诱导率2729%。

Samples including spawners , fertilized eggs , nauplius , zoea , mysis and postlarval were taken from more than ten hatcheries during larval rearing period in 1993-1994 in Shandong province .

1993年和1994年育苗期，在山东省十余家育苗场采集了亲虾、受精卵、无节幼体、蚤状幼体、糠虾幼体和仔虾等样品共56份。

Study on Disease Prevention and Treatment of Mitten Crab Zoea in Early Stage

河蟹早期溞状幼体病害防治研究

The Effect of Different Concentration of Salinity on Growth and Development of Zoea of Chinese Mitten Crab

盐度对河蟹幼体生长发育的影响

Effects of different breeding methods on the metamorphosis rate of early zoea of Eriocheir sinensis

不同布苗法对河蟹早期溞状幼体变态率的影响

Effects of starvation on development of zoea larvae of the Eriocheir sinensis

饥饿对中华绒螯蟹（EriocheirSinensis）幼体发育的影响

Study on protein requirement of zoea larvae and mysis larvae of Penaeus chinensis

中国对虾蚤状及糠虾幼体的蛋白质需求量

The cavity of the enteron is entirely unblocked at the first zoea stage .

在溞状幼虫第一期，消化道的腔才完全贯通。

Effects of OG shrimp larvae feed on zoea larvae of Penaeus japonicus

丰年虫粉虾苗幼体饲料对日本对虾溞状幼体的影响

Observations on the embryo development adn the first Zoea of Macrobrachium hainanense

海南沼虾胚胎发育及初孵幼体的观察

Calanoida , zoea larvae of crabs and fish larva mainly occurred in May .

哲水蚤、蟹类幼体和仔稚鱼主要出现在5月，短额刺糠虾主要出现在10月。

Influences on the Eriocheir Sinensis Zoea of Yeast Rotifer enriched by six kinds of Marine Microalgae

六株海洋微藻强化的酵母轮虫对中华绒螯蟹溞状幼体的影响

A Study on the PNR of Chinese Mitten Crab Eriocheir sinensis Larvae ( zoea ⅰ) by Method of Initial Feeding Rate

用摄食监测法对中华绒螯蟹溞状幼体的PNR研究

The survival rate of test group may reach 13.9 % from the 1st zoea stage to megalopa , which was only 8.1 % in control group .

河蟹各期幼体的成活率提高，从氵蚤Ⅰ期幼体至大眼幼体，试验池的成活率为13.9%，对照池仅8.1%。

Apply once every two day at night , 2-5ppm each time , from Zoea stage continue till transfer of larvae fish to growing pound .

两天一次，2-5ppm于夜间实施，从眼幼虫期一直使用到可供放养的虾苗。

The area of an ommatidium was about 157.16 μ m2 . The development of the zoea 's compound eyes was incomplete .

每个小眼的面积约为157.16μm2。

The main component of the krill population was post larval stages . For the later zoeae , Artemia becomes a good diet .

样品的组成主要是幼体后期的南极磷虾。

The result showed that the PNR of Zoea - ⅰ was about 110h .

结果证实中华绒螯蟹溞状幼体Ⅰ期的PNR在110h左右。

The content of both total carbohydrate and total protein were decreased with embryonic development . The carbohydrate content reduced from 5.65 % of dry weight in the fertilized egg to 1.9 % in the zoea .

总糖含量呈下降趋势，由受精卵期占干重的5.65%下降到溞状幼体期的1.9%。

The results indicate that : 1 . The activities of trypsin-like enzyme and pepsin were different in different stage of the larvae of prawn : Penaeus chinensis Zoea stage < Mysis stage < Post larval stage .

结果表明，1.虾苗酶活力结果为：类胰蛋白酶及胃蛋白酶的活性有差异，溞状幼体期<糠虾幼体期<仔虾期；

The positive rate of natural collect Brood crabs of H. penicillatus , eggs , zoea larva , megalopa larva and junior crab is 82.7 % , 79.3 % , 72 % , 0 and 42.5 % respectively .

绒螯近方蟹亲蟹、卵、溞状幼体、大眼幼体和幼蟹的感染率分别为82.7%、79.3%、72%、0和42.5%。

The 48h LC50 ; values for zoea , mysis and postlarva are 11 . 19 , 11 . 41 and 37 . 34 mg / dm3 NO-2-N.

状、糠虾、仔虾48h的LC50值分别为11.19、11.41和37.34mg／dm3NO-2-N；

During the whole embryonic development stage the highest content of the carbohydrate appear in Blastula stage is 13.99 % and the lowest is 3.05 % at the zoea stage . After hatched the content of the protein , total amino acid and the carbohydrate go on decreasing .

碳水化合物在胚胎发育早期逐渐上升，囊胚期含量最高，为胚胎重的13.99%，原肠期下降为8.40%，溞状幼体期的含量为3.05%，孵化出膜后碳水化合物含量继续下降到2.16%。

Spawning of penaeid shrimp took place in the vicinity of estuaries , but only when the salinity of the sea water became higher could the eggs hatch and metamorphosis . The lowest salinity at which zoea and mysis have been found was 17.9 ‰ .

对虾选择河口附近海区产卵，但卵子一定要在盐度较高的海水中孵化变态，所见淹状、糠虾幼体分布的最低盐度为17.90‰；