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Compound eyes in living arthropods such as insects are very sensitive to motion , and it is likely that they were similarly important in predator detection in trilobites.

复眼在现生的节肢动物如昆虫中非常常见,这些复眼对运动的物体非常敏感,对于一些食肉的三叶虫来说这种相似的构造非常重要。

Any of various predominantly aquatic arthropod s of the class Crustacea,including lobsters,crabs,shrimps,and barnacles,characteristically having a segmented body,a chitinous exoskeleton,and paired,jointed limbs.

甲壳纲动物任一种甲壳纲的数量占优的水生节肢动物,包括有螯虾、蟹、虾和藤壶等,其特征是具有节状身体、几丁质的外骨骼以及成对的、有关节的脚

The native Mustafarians have domesticated an enormous species of hard-shelled arthropods. These Mustafarian lava fleas are capable of walking on the encrusted surfaces of lava flows and atop the searing rock of the volcanic planet.

当地的马斯塔法人驯养著一种具硬壳的巨大节肢动物,马斯塔法熔岩蚤能够在这火山行星上的炽热岩石及流动熔岩的表面硬化层上行走。

The present investigations show that Bt rice possesses high efficiencies for controling rice stem borer, yellow stem borer and rice leaf roller, and there are no significant differences in growth and development of non-target organisms, such as rice planthoppers, leafhoppers and predators, and the stability of arthropod community structure between Bt rice and conventional rice paddy habitats.

现有的研究表明,Bt水稻对二化螟、三化螟和稻纵卷叶螟等主要靶标害虫具有较高的抗性水平,对稻飞虱、叶蝉、捕食性天敌等非靶标生物的生长发育和稻田节肢动物群落的稳定性无明显影响。

For example, in a study published last year in the Proceedings of the National Academy of Sciences a group of researchers looked at crustaceans (crabs, shrimps, woodlice and so on) over the past 550m years and found far more examples of groups of species evolving towards complexity than in the other direction.

举个例子,去年美国国家科学院公布的一项研究里,一群研究人员对生活在过去5.5亿年里的诸如螃蟹、虾、节肢动物有树虱之类的甲壳纲动物进行了研究。他们发现,更多的物种群体是朝着复杂而不是别的方向进化的。

And, we selected some representative species of Collembola and representative groups of Protura, Diplura, Insecta and Arustacean to sequence and analyze their 18S rRNA completely gene sequences, 28S rRNA D6-D7 domain and nearly completely gene sequences to make the studies about the phylogeny relationships of the main families and orders of Collembola, discuss the questions such as the reliability about the new four orders system to Collembola, the monophyletic and ordinal phylogenetic relationships of them and the situation of the special groups, the phylogenetic relationships about Collembola with other groups and the evolution of Hexapod.

同时选取弹尾纲的代表种类和原尾纲、双尾纲、昆虫纲、甲壳动物等节肢动物部分类群,进行了18S rRNA基因全序列和28S rRNA基因D6-D7区以及近全长序列的测定、分析,对弹尾纲重要科属的亲缘关系、进化地位进行分子系统学研究,讨论弹尾纲最新分类系统中四目的确定性、各目单系性、四目的系统关系、特殊类群的分类地位,以及弹尾纲和其它类群之间亲缘关系、六足动物进化等问题。

Microsporidia infect a wide range of hosts including many arthropod species that are characterised by seasonal population crashes.

Microsporidia 传染一宽的包括许多节肢动物种的主人范围是藉着季节的人口坠毁的特色。

The major dominant species of predatory enemies were Erigonidium graminicola and Theridion octomaculatum and their individuals were 81.4 percent of the total predatory enemy individuals of the community.1.2 Spatial patterns and their dynamics of major dominant predatory enemies ofarthropod communityThe research results showed that Pieris rapae distributed mainly on heart leaves and back of inner leaves of cabbage plants, Plutella xylostella distributed mainly on the back of cabbage leaves and Lipaphis erysimi distributed widely in cabbage plants. Among the major dominant species of predatory enemies, Sitticus sinensis distributed mainly on the front of leaves of cabbage plants in spring cabbage fields, and Misumenopos tricuspidata and Propylaea japonica distributed widely in cabbage plants.

在捕食性天敌中蜘蛛10种,捕食性昆虫3种,主要优势种为草间小黑蛛、八斑球腹蛛,其数量占捕食性天敌总数量的81.4%。1.2节肢动物群落主要优势种的空间格局及其动态研究结果表明,害虫优势种菜青虫主要分布于甘蓝心叶和甘蓝叶反面,小菜蛾主要集中分布在甘蓝叶的反面,而菜蚜在甘蓝植株内的分布较广;春甘蓝田捕食性天敌优势种中华跃蛛在外层叶正面分布较集中,三突花蛛与瓢虫类在甘蓝植株内的分布较广。

Animal community structure and diversity showed the marked seasonal changes., The maximum of Arthropods individual number, species number and species diversity were in late July - early August. The groups number of soil animals was the maximum in summer, and the individual number was the maximum in autumn. The species number of birds; was the maximum in spring, the main species of bird community were migratory birds in spring and summer, and the main species of bird community were resident birds in autumn and winter.

节肢动物群落在7月下旬-8月初具有最高的物种数、个体数和多样性指数;土壤动物群落在夏季具有最高的类群数,秋季具有最高的个体数量和多样性指数;鸟类群落在春季具有最高的鸟种组成,春夏季节鸟类群落的主体是候鸟,秋冬季节鸟类群落的主体是留鸟。

The earliest tetrapods were all carnivorous, so it is unlikely that, as adults, they fed much on land during the first phases of their evolution, because the only prey they would have found there were insects and other small arthropods.

最早的四足动物都是肉食性的,那时陆上的食物只有昆虫与小型节肢动物,所以成体不太可能在演化初期就以陆地做为主要的摄食处。

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