查询词典 arthropod

The nuclear 28S rDNA sequence has been widely used in higher phylogenetics of arthropod, but has seldom been applied to Acari.

核醣体28S rDNA序列已广泛应用於节肢动物高阶的亲缘分析，但在蟎蜱的应用上却仍罕见。

They came to form flat animal, star-shape animal, annelid, arthropod and amniote, such as rabbit, dog, horse, sheep, monkey, orangutan and even human.

后来一些生物脱离了水域来到陆地上生活，逐渐形成扁形动物、星虫形动物、环节动物、节肢动物、脊椎动物、兔狗马羊猴、猩猩乃至人类。

Zoo benthos species were observed,with 7 species of arthropod, species of mollusk,and species of annelid.

采集到底栖动物种，其中节肢动物7种，软体动物种，环节动物种。

The first part of the alimentary canal of an arthropod or annelid, which includes the buccal cavity, esophagus, crop, and gizzard.

前肠节肢动物或环节动物的消化道的第一部分，包括口腔、食管、嗉囊和砂囊

Consisting of or having two branches, as the appendages of an arthropod.

两支的组成或有两肢的，如节肢动物的附属物

Results showed that abundance, richness and diversity of arthropod communities decreased with depth. A negative association was found between canopy openness and the number of arthropod groups in the lifter layer; some arthropod taxa, such as the Uribatida, Prostigmata and Mesostigmata, were found in a wide range of light conditions, whereas the Hymenoptera, Symphyla, Pseudoscorpiones and Lepidoptera larvae may be photophobic.

结果表明土壤节肢动物的多度、丰富度和多样性随土壤层的加深而下降，具有明显的表聚性；林冠开度与凋落物层的土壤节肢动物类群数量呈负相关；甲螨亚目、中气门亚目和前气门亚目动物对光照的适应范围广；膜翅目、鞘翅目幼虫、综合纲和伪蝎目动物具有明显的避光性；土壤节肢动物类群的分布与林冠开度、土壤自然含水量、电导率和有机质关系密切。

Through the comparative analysis of the arthropod community between intercropping system and the three control systems～the weeding jujube yard system, not weeding jujube yard system and the system of farmland, it is showed that the intercropping system have a more richer neutral arthropod groups. Compared to Weeding jujube yard system and system of farmland the intercropping system have more advantages in natural enemies groups and more disadvantaged phytophagy groups. And the intercropping system can rebuild the arthropod community more faster than the other systems after the system was seriously disturbed, so it is than compared to other three systems the intercropping system have more proper structure and more stronger regulation ability and also more stronger ability to control pest.

对枣粮间作系统和三种对照系统，即除草枣园系统、未除草枣园系统和农田系统的节肢动物群落进行对比分析发现枣粮间作系统具有更为丰富的中性节肢动物类群，比起除草枣园系统和农田系统有更优势的天敌类群和更劣势的植食性类群，且在遭受生境的巨大变化后新生境重新形成时枣粮间作系统的各亚系统能更迅速的形成节肢动物群落和各种功能类群，说明枣粮间作系统比三种对照系统的节肢动物群落有着更合理的结构、更强的调控能力和更强的控害能力。

The natural enemies group, neutral arthropod group and phytophagy arthropod group of the two sub-systems were respectively analyzed and have found that all types of arthropods of the two sub-systems can be divided into three different types of groups. The first group is which living in two habitats and the species current is few impacted by the changes of habitats; The second group is which can living in two habitats in turn ,but can transfer to another in the time the habitats was deeply disturbed ;The third one can only living in one habitats and can make the another habitats as a temporary habitats.

两个亚系统的天敌类群、中性节肢动物类群、植食性节肢动物类群分别进行分析发现两个亚系统的各类群节肢动物均可划分为三种不同类型，第一种为栖居于两种生境且物种流受生境变化影响较小类群；第二种为可依次栖居于两个不同生境，生境的变化对其物种流产生较大影响；第三种为栖居于某一单一生境，但可将另一系统作为某一虫态的临时栖境。

Based on a systematic field investigation and laboratory experiments, the structures of arthropod communities and the evalution of dominant predatory enemies in cabbage fields of different seasons were studied. The main results were as follows:1 The structures and their dynamics of arthropod communities in cabbage fields1.1 Species composition and population dynamics of each species of the arthropodcommunities in the cabbage fieldsThe research results showed that the occurrence of Pieris rapae in spring cabbage fields was relatively grave.

本文在田间系统调查和室内试验的基础上，对不同季节甘蓝田节肢动物群落结构及捕食性天敌优势种的评价进行了研究，主要结果如下：1甘蓝田节肢动物群落结构及其动态1.1节肢动物群落物种构成和各种群数量动态研究结果表明，春甘蓝田菜青虫的发生比较严重，菜青虫在调查期间种群数量呈上升趋势，5月初高峰期平均每株甘蓝接近20头；菜蚜与小菜蛾的发生相对较轻，菜蚜在5月中旬有个明显高峰。

An application of the test to the comparisons of the eleven sequenced arthropod mtDNAs revealed that most of the observed evolutionary models were homogeneous between the two mosquitoes but not between Daphnia pulex or Artemia Franciscan and the other arthropod, probably due to shifts to a high AT content.

在真实数据中，用11种节肢动物线粒体DNA的比较中发现，水蚤或卤虫与其他9种节肢动物以高百分比违背了同质性进化模型假设，显然是由于AT含量高而引起的，且在两种蚊子的线粒体DNA比较中发现，其满足同质性假设仅有7.69%。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。