十足类

The planktonic larvae of echinoderms and decapod crustaceans have increased in abundance from 1958 to 2005, and especially since the mid-1980s, as North Sea SST has increased.

棘皮类和甲壳纲的十足类浮游动物的幼体从1958年到2005年一直处于增长状态，尤其是在80年代中期，这是由于北海海水的表面温度增长的缘故。

By combining with the author's own research work, the progresses of study on sperm egg identification, acrosomal reaction, cortical reaction, and formation of male and female pronucleus in decapod crustacean are reviewed in the paper.

结合作者近期的研究工作，从精卵识别、顶体反应、皮层反应、雌雄原核的形成和结合等方面综述了近年来十足类甲壳动物受精细胞学方面的研究成果，并展望了这一领域的研究与应用前景。

A tide of immigration.class of mandibulate arthropods including: lobsters; crabs; shrimps; woodlice; barnacles; decapods; water fleas.

具颚节肢动物纲；龙虾类；螃蟹类；小虾类；十足类；水生跳蚤类；潮虫；附着甲壳动物；十足类；水生跳蚤类。

Female crabs were collected from Ningguo County in Anhui Province on May 1994.The results showed that morphology of the spermatheca is associated with the ovarian cycle.

但是，有关十足类甲壳动物纳精囊在繁殖过程中不同阶段的形态学、组织学和细胞化学方面的研究尚未见报道。

Marine biologists exploring this coastline over the last eight years as part of the Census of Marine Life have found more than 500 species of crabs, shrimps, lobsters, and other Decapoda.

作为海洋生物普查的一部分，过去八年中海洋生物学家们在这片海域发现了超过500中螃蟹、虾、龙虾等十足类动物。

The present paper also reviewed the studies on chromosomes in Decapoda and preilminarily analysed the phylogenetic relationships of Palaemoninae karyotypes.

本文还综述了十足类甲壳动物染色体研究进展，就十足类核型分析的方法学展开了讨论，对长臂虾亚科核型演化关系进行了初步分析。

The gene arrangement features at nad3–nad5 and nad5–nad4 junctions contain useful information for phylogenetic inference of the advanced groups within the Decapoda.

而对基因排列顺序的系统发生研究结果提示，在十足类进化分支的系统发生上，nad3-nad5 和 nad5-nad4 基因连接部的基因排列性状是有用的信息。

Snapping shrimps belonging to Decapoda are also highly diversitied, forming a large fauna in the world. Gobiids and snapping shrimps share same habitats to perform an intimately symbiotic relationships between them.

貌窸卫是海水鱼中最大的一科，歧异度非常高，是底栖型鱼类的主要组成部份；而枪虾也是一种歧异度很高的甲壳十足类，在全球珊瑚礁海域动物相中的数量占有相当大的比例。

Based on the data of four seasonal oceanographic censuses in the East China Sea(23°30′～33°N、118°30′～128°E)in 1997～2000,the species composition and the diversity of pelagic Decapods as well as their relations with environmental variables were discussed.

根据1997~2000年对东海23°30′~33°N、118°30′~128°E海域4个季节海洋调查资料，运用定量、定性方法，探讨了东海浮游十足类的种类组成、时空分布、多样性及与环境的关系。

The crabs are grouped together with lobsters and shrimp into a group called Decapods, and then again into a larger group of crustaceans with about 22000 species.

螃蟹分组与龙虾和虾成一组所谓的十足类甲壳类为大组（10英尺），然后再约22000种。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。