瓢虫

Research advances on the biological and ecological characteristics of P.japonica are summarized in this paper, which includes the variation in elytra color polymorphism, life history, fecundity, appetite, predation, over-wintering habits, artificial rearing technique, and population dynamics under natur...

本文从龟纹瓢虫的生物学和生态学特性，包括色斑变型、生活史、繁殖、食性、越冬、人工饲养、田间动态以及在生物防治上的应用等方面概述了龟纹瓢虫的研究进展，提出进一步深入开展龟纹瓢虫的人工饲养技术、贮藏技术和色斑变型遗传机制等的研究，不仅可以更好地为农业生产服务，而且可以充实昆虫生态位理论的研究内容。

The genetic distance a mong different splash types of H.axyridis was 0.0021 to 0.0328 The aver age gene tic distance was 0.0193 The molecular phylogenetic tree suggested that the me mb ers with the same elytron color were grouped together with high bootstrap confid ence values, showing low diversity among the populations. H. axyridis ab. luna t a Hem and H.axyridis var. spectabilis Fald were most closely related. H.ax yridis var. axyridis Pallas was a primordial population of coccinellidae, which wa s differentiated earlier than the other populations.

分子系统树显示：各类群间遗传分化很小，鞘翅颜色相同的瓢虫均已较高的置信值聚在一起；双月斑变型和显明变种亲缘关系最近，重名变种为原始类群，分化较早，与其它12种不同色斑异色瓢虫亲缘关系较远。

Consideration on various grounds has led to the inclusion of three new species ofladybeetles in the Coccinellidae fascicle of the Economic Series of the Chinese InsectFauna, now going to the press.

由于不同的原因，弯斑瓢虫，纵条瓢虫(C.longifasciata)和隐斑瓢虫三个新种被认为应当包括在即将付印的《中国经济昆虫志：瓢虫科》一书中。

Japonica forewing and the C isotope values reflect the situation of larvae feeding period.

龟纹瓢虫前翅的C同位素值能够反映幼虫期间的取食情况，通过测算同位素值，分析结果即可了解景观格局对龟纹瓢虫幼虫期的取食影响。

Frizzle to give her some hints on caring for her insect pets.

旺达将她的瓢虫带到了学校，她就是想让弗瑞斯老师看看这只瓢虫，然后告诉她该如何照顾这个宠物昆虫。

The dominant natural enemies were Propylosa japonica and predaceous bugs in the second generation, P.

二代主要为龟纹瓢虫、捕食性蝽；三代主要为龟纹瓢虫、异须盲蝽；四代主要为异须盲蝽、蜘蛛、龟纹瓢虫。

Seven star 瓢 insects, small red 瓢 insects and different color 瓢 all of insects are the useful insects which preys for food aphid and scale insect.

七星瓢虫、小红瓢虫和异色瓢虫都是捕食蚜虫和介壳虫的益虫。

Effect of Hippodamia tredecimpunctata and Hippodamia vaviegata predation on Therioaphis trifolii was carried out by observing the influence of mutual interference among individual predators on predation rate of Hippodamia variegate and Hippodamia tredecimpunctata to Therioaphis trifolii, and two kinds of ladybug's functional response under the different density of Therioaphis trifolii as well.

研究了十三星瓢虫和多异瓢虫个体间的干扰作用对捕食作用的影响，以及2种瓢虫在苜蓿斑蚜不同密度下的功能反应。

Among the enemy population, intra-species competition is fiercest for Coccinella septempunctata and weakest for E. plagiator. In terms of time, competition between P. japonica and C. septempunctata or Leis axyridis is relatively fierce. However, that between E. plagiator and P. japonica, C. septempunctata or L. axyridis is weaker.

在天敌种群中以七星瓢虫种内竞争最为激烈，麦蚜茧蜂的种内竞争最为缓和；龟纹瓢虫分别与七星瓢虫和异色瓢虫在时间维度上的竞争较为激烈，而麦蚜茧蜂分别与龟纹瓢虫、七星瓢虫和异色瓢虫的竞争比较缓和。

In this paper, the influence of interspecies competition on the population growth of D. catalinae and S .japonicum was studied under conditions of single and mixed rearing, and Lotka-Volterra equation was used to simulate the competition when more and less preys provided for the two ladybirds.

通过单独饲养和混合饲养，研究了种间竞争对七星瓢虫和异色瓢虫种群数量增长的影响，并用Lotka-Volterra种间竞争模型对两种瓢虫在猎物相对充足与不足条件下的种间竞争进行模拟。

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％。