荔枝螺

The snail was found to have an indirect developmental type in the early development. The fertilized eggs were oval-shaped and discoidal cleavage. Embryonic development stages were divided into cleavage, blastula, gastrulae, trochophore, and intra-membrane veliger. Larval development stages included veliger, late veliger and crawling larvae metamorphosed to juvenile.

结果表明：黄口荔枝螺卵囊高度平均为7.33 mm，卵粒数量平均为165粒；黄口荔枝螺的早期发育属间接发生型，受精卵呈椭圆形，卵裂为盘状卵裂；在卵囊内，胚胎发育包括卵裂期、囊胚期、原肠胚、膜内担轮幼虫、膜内面盘幼虫；幼虫发育包括面盘幼虫、后期面盘幼虫和匍匐幼虫。

A common grazer in the area is the common periwinkle, which is closely related to theperiwinkles that live in the upper intertidal.

一共同的grazer在区域是共同的荔枝螺，与theperiwinkles紧密地相关在鞋帮居住潮间带。

The BLAST programs were used for searching protein and DNA databases for sequence similarities. The BLAST result showed that it was a new sequence and similar to zebra fish DNA sequence and some fish reverse transcriptase. But it has small homology of CYP 19 gene sequences that have been in Genbank.In addition, sequences were amplified by RT-PCR with using degenerate primers that weredesigned against CYP4 sequences.

另外，还根据昆虫CYP4家族的特异性氨基酸序列及P450超家族的共同特征序列，采用另一对简并引物，同样进行有关研究，结果显示：疣荔枝螺不同组织的RNA中都含有一长468bp左右的序列，这同样是一段新序列，与部分物种的CYP4存在一定的相关性，可能在螺体内起一定重要的作用，但具体功能有待进一步研究。

ConclusionThe principal chemical constituents of the essential oils from S. plebeia are β-Eudesmol,γ-Eudesmol,-Calamenene , Agarospirol,β-Cadinene.

结论荔枝草挥发油的主要化学成分是β-桉叶醇，γ-桉叶醇，-去氢白菖蒲烯，沉香螺醇，β-杜松烯，为荔枝草资源的进一步开发利用提供了科学依据。

Now, the imposex status in females of Thais clavigera and Cantharus cecillei in 17 sites was investigated to evaluate the organotin contamination along Xiamen Bay during 2006 and 2007. The four indices including incidence of imposex, relative penis size index, vas deferens sequences index and sex ratio index were used comprehensively to assess the imposex status in order to ascertain the extent of organotin bioavailability in Xiamen Bay.

调查研究了厦门海域岩相海岸带疣荔枝螺和甲虫螺的性畸变情况，通过生物学指标IOI、RPSI、VDSI及SRI综合评价其性畸变发展程度，间接指示厦门周边海域的有机锡污染程度。

In this paper, the experimental results of P450 enzymes were helpful to further understand the mechanism of imposex that caused by organotin compounds in T. clavigeras. And what we have studied on CYP genes could make foundation for further study on mollusks on the level of molecular biology.

同时也从疣荔枝螺RNA及基因组DNA得到有关的基因序列，为进一步探讨该基因在螺体内的作用打下基础，也为海洋软体动物的分子生物学研究提供参考。

If the periwinkles like Enteromorpha so much, you might think that they would move into Enteromorpha pools, but they don't.

如果荔枝螺喜欢Enteromorpha非常多，您也许认为他们将搬入Enteromorpha水池，但他们不。

On the other hand, Enteromorpha soon moves in after periwinkles are removed from an Irish moss pool.

另一方面，在荔枝螺从爱尔兰青苔水池之后，被去除Enteromorpha很快移动。

The early development periods and characteristics of snail Thais luteostoma were described under microphotography. The oocysts had average height of 7.33 mm, with 165 eggs on the average.

对黄口荔枝螺Thais luteostoma早期发育进行了研究，详细记录了其早期发育过程中的发育时间与特征，并对各阶段进行显微摄像。

For one thing, large periwinkles do not move around a lot and prefer to stay in one tide pool.

首先，大荔枝螺在一个浪潮水池不移动很多并且不喜欢停留。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。