查询词典 tapeworms

The RAPD results illustrate that the phylogenetic relationship betweenBothriocephalid tapeworm parasitic in Grass carpCtenopharyngodon idellus(C.et V.and Common carp(Cyprinus carpio L.)from different regions ofChina is infraspecific with noticeable variance bwtween them.Thephylogenetic trees based on the 3 sequences analyses above are constructed,which show the following relationships:Bothriocephalid tapeworms fromGrass carp,Common carp and Luciobrama are found to be monophyletic,and are very close to Bothriocephalus opsariichthydis,but are divergent toanother monophyletic group comprising Bothriocephalid tapeworms fromZacco,Hemiculter and Leuciscus.On the basis of phylogenetic reconstruction,autapomorphic species conceptis used in species delimitation suitablefor determining four species in the present study:B.acheilognathi,B.opsariichthydis,and two other bothriocephalids parasitic respectively inHemiculter and Leuciscus.It is also deduced that the differentiation time ofBothriocephalid tapeworms parasitic in cyprinids is earlier than that of theirhosts,and the most recent specification happened about one million yearsago.Key words Bothriocephalid tapeworm Molecular Systematics

具体成果有：通过RAPD分析探明了我国不同地理分布的草、鲤鱼头槽绦虫的亲缘关系属于种下水平，并存在较高变异；通过基因合并分析重建头槽绦虫的系统发育关系，表明草鱼、鲤鱼及鯮鱼头槽绦虫是单系群，它们与马口鱼头槽绦虫亲缘关系较近，而与〓条、宽鳍鱲及雅罗鱼头槽绦虫构成的另一单系群亲缘关系较远；在此基础上，提出符合头槽绦虫种的界定的独征物种概念，据此确定鲤科鱼类寄生头槽绦虫的四个种：鱊头槽绦虫，马口鱼头槽绦虫，以及另两种分别寄生于〓条和雅罗鱼的头槽绦虫：根据上述研究推断鲤科鱼类寄生头槽绦虫的分化年代早于其宿主，最近的一次物种形成距今约一百万年左右。

The tapeworms parasitize usually in the bodies of frogs or wild animals. If people eat the fresh or uncooked meat of the infected animals, they will be infected with the tapeworms.

这种寄生虫一般寄生在青蛙或野生动物体内，人若进食了生的或未煮熟的肉类可导致感染。

A larval stage of certain tapeworms that typically develops in the body cavity of a ''.

原尾幼虫假叶目及一些其他绦虫的实体第一寄生虫，通常在桡足类的体腔中发育

One who practices palmistry.A larval stage of certain tapeworms that typically develops in the body cavity of a copepod.

原尾幼虫假叶目及一些其他绦虫的实体第一寄生虫，通常在桡足类的体腔中发育

"Cysticercus:The larval stage of many tapeworms, consisting of a single invaginated scolex enclosed in a fluid-filled cyst."

囊尾幼虫：许多绦虫的幼虫时期，由在充满液体的囊中单个的肠套头结构成。

Finally he consults the dictionary."Ah," he says, looking at me exultantly,"tapeworms!"

最后他查了查词典，欣喜地抬头望着我道，"哈，是绦虫！"

Worm that is parasitic on the intestines of vertebrates especially roundworms and tapeworms and flukes.

寄生在脊椎动物体内的蠕虫，特别是蛔虫、绦虫和吸虫。

Most flatworms are hermaphrodite and, in tapeworms, self-fertilization usually takes place.

大多数的扁虫雌雄同体，绦虫常常进行自体受精。1。气体交换是在体表进行的。

Fern of North America and Europe whose rhizomes and stalks yield an oleoresin used to expel tapeworms.

北美和欧洲的一种蕨类，其根茎和叶柄分泌出一种可以驱除绦虫的含油树脂。

The larval stage of many tapeworms, consisting of a single invaginated scolex enclosed in a fluid-filled cyst.

囊尾幼虫许多绦虫的幼虫时期，由在充满液体的囊中单个的肠套头结构成

Some questions asked by the adjudicators in one English Speaking Contest still run upon me very often.

我参加了一场以"我心中的奥运会"为主题的英语演讲竞赛，其间评判提的几个问题时时萦绕我的心头。

He called InTERActive our most profitable release of the year.

他呼吁互动的我们的最有利可图的释放一年。