查询词典 vitellin

Vitellin was isolated and purified from the eggs of a water wolf spider, P. piraticus.

从真水狼蛛Pirata piraticus卵中提取出了雌性特异性蛋白质——卵黄蛋白。

According to amino acid sequence to vitellin which has the structural character of GL/ICG motif near C end, two degenerate primers were designed and Chrysopa septempunctata s RNA was extracted, and a 900bp fragment was amplified by RT-PCR.

根据昆虫卵黄蛋白氨基酸序列在靠近C端存在GL／ICG区域的结构特点，设计了两条简并引物，提取大草蛉的RNA，用Takara的3′—RACE试剂盒进行RT-PCR，扩增出一段900bp的片断。

Through ELISA detection, vitellin"s synthesis and intake of female worm taking in artificial ovum Trichogramma"s pupas were both obviously reduced.

通过ELISA检测发现，取食人工卵赤眼蜂蛹的雌虫卵黄蛋白合成和摄取都明显减弱。

Suitable temperature and mixed feed will help the development of the ovary and the synthesis of the vitellin.

合适的温度和多种食物混合饲养有利于卵巢的生长发育和卵黄蛋白的合成。

In recent years, with the development of the molecular cloning technology, genetic engineering and bioinformatics, the study of vitellin gene will provide a new method to biological control of pests.

近几年，随着分子克隆技术、基因工程手段和生物信息学的发展，对卵黄蛋白基因的研究将为寻找害虫生物防治提供新途径。

The study of structure and synthesis of vitellin, uptake process by ovary and the mechanism of hormone regulation is one of concentrated studies in insect physiology.

卵黄蛋白的结构及其合成、摄取过程与激素的调控机理是目前昆虫生理学的研究热点之一。

During embryonic development of the spider, the content of vitellin in embryos decreases rapidly.

在胚胎发育过程中，卵黄蛋白含量下降明显。

In this article, we reviewed the researches on insect vitellin and its hormonal regulation, which is helpful to understand mechanism of pest resurgence and to control the pests using natural enemy.

本文对昆虫卵黄蛋白及其激素调控进行了综述。为防治害虫再猖獗的发生和促进大量繁殖益虫提供重要的理论依据。

Molecular weight of the vitellin is 255 kD and the molecule is composed of four subunits with molecular weight of 84 kD, 69 kD, 63 kD and 49.8 kD, respectively.

卵黄蛋白的分子量为255 kD，其分子由4个亚基组成，亚基分子量分别为84 kD，69 kD，63 kD和49.8 kD。

The results of the determinating the activity of the CA in vitro showed that the CA of the water—fed individuals were in activing statics after eclosion. Because of the apperence of the Vg in haemolymph and the deposition of the vitellin in oocytes in the unfed females, it was shown that the CA in such individuals were in activiting statics, too. Again because in the water—fed females which did not lack the feeding action the activity of the CA showed dropping tendency gradually still, it could be said that the activiting of the CA was possibly effected by the nutrition but it was never related to the adult feeding action. In another respect, the brain of the female adult had not significant effect on the activiting CA. The oocytes could depositing vitellin in individuals removed brain tissue on the day of eclosion, which showed that the activting of CA was not concerned with brain.

CA活性的体外测定说明饲水个体的CA同样具有活性，不取食个体血淋巴中Vg的存在以及卵母细胞中卵黄的沉积表明，在不取食的个体中CA同样具有活性，所以CA的活化与成虫期的取食动作无关，与成虫是否取食花蜜也无太多的联系，但是CA活性的维持可能受成虫期营养的影响，如果以卵母细胞发育和CA体积大小作为CA活性的指标，则饲水个体CA的活性在后期受到了影响，说明饲水不能替代取食蜂蜜来维持成虫期CA的活性；成虫期脑对CA的活化无明显作用，羽化当日摘除脑的个体，其卵母细胞仍然可以沉积卵黄，说明CA的活化与脑无关，而是受某种不确定的因子的影响；用抗JH物质—早熟素—Ⅱ以10ug／虫的剂量在颈部点滴处理雌虫，对Vg的发生和卵巢的发育具有一定的迟缓作用，其原因有待于进一步的研究。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。