虫类

Both of amount of 54 ind/L and 95 ind/L were found from cladocera of 8 species as well as Copepoda of 6 species and their proportion of 28.57% and 21.43% were recorded.

浮游动物28个种属，其中轮虫14个种属，数量137 ind/L，占50%；枝角类8个种属，数量54 ind/L，占28.57%；桡足类6个种属，数量95 ind/L，占21.43%。

Temporal changes in zooplankton composition occurred in both ponds with Cladocera appearing in abundance later, in the fourth week, whereas copepods and rotifers were well represented since the beginning.

浮游动物组成短暂的变化在两个塘同时出现随着枝角类较晚出现一定丰度，在第四周左右，然而桡足类和轮虫自开始就出现。

Five water sampling collected from Miyun Reservoir were observed quantitatively. Thirty-six species of zooplankton including 11 protozoan, 15 rotifers,6 cladocero and 4 copepoda were found. The results showed the eutrophicational feature, such as lower biodiversity ,miniaturization and more amount.

浮游动物共检出4门，30属，36种；浮游动物群落具有原生动物数量多，轮虫次之，枝角类与桡足类量少的特点，呈现出浮游动物数量大、小型化、多样性低等伴随水体富营养化出现的特征。

Methods The distribution of Pomacea canaliculata, Achatna fulica and slugs was investigated in fields, farms, restaurants and free markets. Lung-check up and organize-plasm were used in the infection inspection of A. cantonensis.

分别在野外、螺类养殖场、餐饮场所、自由市场等4类场所进行福寿螺、褐云玛瑙螺、蛞蝓等中间宿主的分布调查，应用&肺检查法&结合&组织匀浆法&进行广州管圆线虫感染调查。

Including Tung perch Section fish, white crayfish, the hole source, points viper, blind beetles, white eyes and flat worms, feet class , Isopoda, beasts in the bag mole Section, Mole Branch, Soricidae, Muridae capsule, small animals such as armadillos.

包括洞鲈科鱼、白色螯虾、洞源、穴蝰、盲甲虫、白色无眼扁形虫、双足类、等足类，兽类中的袋鼹科、鼹科、鼩鼱科、囊鼠科、小犰狳等动物。

Tte also suggest a possible comparison with the Ediacara trilobozoan fossils-Albumares and Anfesta from the shores of the White Sea in Russia. The re-cent discovery of a few skewed E. octobrachiata and walnut-shaped fossils with several carbonaceous meridian bands believed to represent lateral compressions of the same organism strongly suggests that this octoradial fossil is a ctenophoran.

新发现的倾斜保存的八臂仙母虫化石和碳质条带呈子午线状排列的核桃状化石，可能是该类化石归属栉水母类的有力证据，这一发现推测可将栉水母类的最早化石记录从&澄江生物群&的早寒武世推前大约3千万年。

Constitution and distribution of freshwater crabs have close relationship with altitude, terrain features, and movements of water in the area. Wild rodent animal may contribute to the maintenance and expansion of the endemic areas of Paragonimus .

淡水蟹类种类的组成与分布与其不同海拔高度和地势地貌及其水系的走向等密切相关；野生啮齿类动物对于并殖吸虫疫源地的维持甚至扩大起着一定的作用。

The first feeding appears on the third day after hatching. The first food of larvae is Rotifera, But if Cladocera predominates in water, the first food can also be small Cladocera .

仔鱼3d龄开口，主要以轮虫为开口饵料，在食物中枝角类占绝对优势时，以小型枝角类为其开口饵料。

Cage culture of the mandarin fish also decreased the dissolved oxygen concentrations, the species number and biomass of the zoobenthos around the cage area, but had no significant effects on the water temperature, pH, transparency, species composition of phytoplankton and zoobenthos, and the species composition and biomass of rotifers, cladecerans and copepods.

网箱养鳜同时减少了网箱周围的溶氧、底栖动物的种类数和生物量，但对水温、pH值、透明度、浮游植物种类、原生动物种类以及轮虫、枝角类和桡足类的种类和生物量影响较小。

Some annelids, such as leeches, are also ectoparasites, using sucking disks to feed on the blood and tissues of vertebrate hosts.

一些环节虫，诸如水蛭，同样也属体表寄生类，其用吸盘吸取脊椎类宿主的血液及组织维生。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。