vitellogenesis

Objective: To study The vitellogenesis and its mechanism in 2 kinds of lizards.

目的:研究蜥蜴类卵黄形成的过程及机理。

Vitellogenesis of Eriocheir sinensis is regulated by circulating hormones.The yolk precursors are called vitellogenin.

中华绒螯蟹的卵黄形成也受各种相关内分泌激素的调控。

This thesis described the relationship of organelles in the oocyte with vitellogenesis in Macrobrachium rosenbergii.

作者研究了罗氏沼虾卵母细胞细胞器与卵黄发生的关系。

At the early stage of vitellogenesis, Golgi complex was abundant whose saccules increased to more than ten layers.

卵黄发生早期，高尔基复合体发达，膜囊数达10多层；

At the end stage of vitellogenesis, Golgi complex began to disintegrate, so its number decreased.

卵黄发生后期，高尔基复合体开始解体，数量减少。

The knowledge of tick vitellogenesis is preliminary, and further research should be made in many aspects.

对蜱类卵黄发生了解得尚少，在许多方面需深入研究。

The oocytes are released from the germinal epithelia into the coelom at a relatively early stage of development during vitellogenesis.

雌性生殖细胞不形成合胞体,卵母细胞在发育的早期阶段,卵黄发生期间从卵巢(生殖上皮)排入体腔中,并在体腔中发育。

There were clear seasonal changes in the folliculogenesis.It could be divided into two stages：the previtellogenesis and vitellogenesis.

结果显示，其卵泡有显著的季节性变化，可分两期，即卵黄形成前期及卵黄形成期。

Vitellogenesis directly influences tick reproductive ability, and is always a very active research field in tick physiology.

卵黄发生直接影响蜱类的繁殖力，一直是蜱类生理学一个十分活跃的研究领域。

In middle vitellogenesis, it was observed that mitochondria of the follicle cell has similar function of the formation of yolk.

同时滤泡细胞继续有物质通过指状通道进入初级卵母细胞，直接或间接转化为卵黄物质。

Vitellogenesis is regulated by hormones.There are obvious differences between hard ticks and soft ticks in hormonal effects and sorts.

蜱类卵黄发生受激素调控，激素的作用与作用激素的种类在硬蜱和软蜱中表现出较大差别。

The functions of the mitochondria and yolk precursor granules during vitellogenesis process are discussed in this paper.

讨论了线粒体与卵黄前颗粒在卵黄形成中的作用。

Then their synthese speed slows down.But the synthese of RNA and DNA inthe follicular cell is continuous during vitellogenesis, which may relate toformation of livetin.

而滤泡上皮细胞在卵母细胞卵黄形成期，它的RNA和DNA的合成均较快，因此认为滤泡上皮细胞合成分泌了一些物质参与卵黄蛋白的形成。

It was found that there was an obvious cytochemical changes in the epithelium and in the luminal contents of the spermatheca during different phases of the vitellogenesis cycle.

结论：纳精囊与卵巢发育周期有密切的关系。

Abstract： In this paper，the ultrastructural changes of the oocyte of the first order of Macrobrachium rosenbergii are discussed during the vitellogenesis.

摘 要： 对罗氏沼虾初级卵母细胞在卵黄形成期的超微结构变化进行了研究。

This suggests that nuage exists in oocytes by mid vitellogenesis but it may not be involved in the assembly of a maternal germ plasm localized in oocytes bearing late vitellogenesis in B. germanica.

由上述结果显示，在德国蜚蠊的微卵管中，生殖云存在于卵黄发育中期以前的卵母细胞；然而在卵黄发育后期，生殖云并不参与母系生殖浆的组成。

On the basis of regular pattern of cell's growth and development, process of vitellogenesis ,the processes can be devided into three stages: reproductive stage、growth stage、mature stage.

根据卵细胞生长、发育规律,卵黄的形成、积累和成熟过程,可将海湾扇贝卵的发育分为三个时期:增殖期,生长期和成熟期。

More and more yolk granules were formed and accumulated in the cytoplasm of vitellogenic oocyte.In T. orientalis, vitellogenesis appeared to involve both endogenous and exogenous yolk formation.

卵黄合成旺盛，胞质中因而形成并积累了越来越多的卵黄粒。

Hormonal Control of Vitellogenesis in Honey Bee

蜜蜂卵黄发生及激素调控概述

oocyte vitellogenesis receptor

卵母细胞卵黄生成受体（0VR）

Advances in the study on vitellogenesis and its hormonal control in crustacea

甲壳动物卵黄发生及其激素调控研究进展

The primary oocyte development and ultrastructure of vitellogenesis in bay scallop, Argopecten irradians concentricus

墨西哥湾扇贝初级卵母细胞发育及卵黄发生超微结构的初步研究

Ultrastructures of fat body cell and follicle prior to and during the vitellogenesis of Pteromalus puparum

蝶蛹金小蜂卵黄发生前后脂肪体和卵泡的超微结构

Key words: Pteromalus puparum; adult nutrition; mating; ovarian development; vitellogenesis

关键词：蝶蛹金小蜂；成虫营养；交配；卵巢发育；卵黄发生

4） The granulosa increasingly disintegrated and the yolk platelet came into being in the oocyte in vitellogenesis.

4)后期颗粒层解体，卵母细胞内出现大量的卵黄小板。

Keywords Haemaphysalis longicornis;vitellogenesis;vitellin;vitellogenin;fat body;hemolymph;ovary;juvenile hormone;juvenile hormone analogue;ecdysteriods;hormonal regulation;

长角血蜱;卵黄发生;卵黄蛋白;卵黄原蛋白;脂肪体;血淋巴;卵巢;保幼激素;保幼激素类似物;蜕皮激素;激素调控;

vitellogenesis

n. [动]卵黄生成作用

Vitellogenesis stage

卵黄形成期