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Harmonia axyridis is one of the important predations, and it can prey many kinds of aphids, it has very useful foreground in biological control.

异色瓢虫是一种重要的捕食性天敌,可捕食多种蚜虫,在生物防治中具有很大应用前景。

Assulta was studied in the present paper. Based on the successful reciprocal crosses, sex ratio and fertility of the hybrids in larvae, pupae and adults were investigated. In addition, the physiological mechanisms and genetic basis of host plant ranges of H.

在此基础上,利用解剖和观察等方法对子一代幼虫、蛹和成虫的性别比例和可育性进行了较为系统的研究;并利用比较的方法对棉铃虫和烟青虫食性广度的生理机制和遗传基础进行了初步研究。

The effect of the natural enemies were assessed according to the analysis, which revealed that the parasitoids played more significant role than the predators, and that Citrostichus phyllocnistoides which had the closest synchrony and sympatry with citrus leafminer P.citrella, should be considered as dominant natural enemy, and be protected and utilized to control the citrus leafminer. Wide niche and distribution as Orius sauteri has, its narrow overlap showed the less close sympatry and synchrony as well as impossibility to control the prey.

寄生性天敌群子强于捕食性天敌群子,表明在自然环境中寄生性天敌群子对桔潜蛾的控制作用强;捕食性天敌小花蝽Orius sauteri虽然食谱生态位宽,但生态位重叠却小,说明这种天敌尽管分布广泛,可在时间和空间上没能有效"跟随"害虫的发生,对害虫控制作用不大;寄生性天敌短腹桔啮小蜂Citrostichus phyllocnistoides与桔潜蛾在时间上的同步性和空间上的同域性均优于其它天敌,为优势天敌,应加以保护和利用。

The feeding habits of the larva is more extensive, also eat to fresh leaf of the elm , mulberry leaf , the leaf of the general term for paulownia, phoenix tree and tung tree , blade of the legume besides the above food, and various kinds of corpse and jujube kernel of insect process piece produced to sift; When the food is scarce , can even bite food wooden raising case and paper , various kinds of grass one , blade ,etc.

幼虫的食性更为广泛,除以上食物外还吃鲜榆叶、桑叶、桐叶、豆科植物的叶片,以及各种昆虫的尸体和枣仁加工筛出的碎屑;当食物缺乏时,甚至还可咬食木质的饲养箱和纸片与各种草棵、叶片等。

Cipangopaludina chinensis is a normal kind of freshwater gastropod and has high economic values because it can be food for people, which not only tastes well but also is high nutrient, and it can be the bait for some carnivorous fish and some omnivorous fish such as Mylopharyngodon piceus and Cyprinus carpio.

中国圆田螺Cipangopaludina chinensis是我国一种常见的可供食用的淡水螺,滋味鲜美,具有较高营养价值;同时它还是青鱼、鲤鱼等肉食性鱼类和杂食性鱼类的优良天然饵料,因而具有较高的经济价值。

The results showed that the phytophagous insects in the spruce forest in Qilian Mountains exhibited obvious vertival stratification structure. According to the amounty of species of each structure, it could be divided into 6 insect communities, namely the insects community of the shrub and herbage (928 species), of the soil and root (780 species), of the tender end and needle (117 species), of the stem phloem and xylem (66 species), of the branch thin end twig shin (38 species), of the blossom and seed and fruit (14 species).

结果表明祁连山区青海云杉林中植食性昆虫具有明显的垂直分层结构,根据林分的垂直结构和昆虫寄生、取食树木组织部位可划分为6个群落,其种类由多到少依次为灌木和草本层昆虫群落(928种),土壤与根部昆虫群落(约780种),嫩梢与针叶昆虫群落(117种),树干韧皮部与木质部昆虫群落(66种)、枝梢与嫩皮昆虫群落(38种)、花与种实昆虫群落(14种)。

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。

Any of various omnivorous, even-toed ungulates of the family Suidae, including pigs, hogs, and boars, having a stout body with thick skin, a short neck, and a movable snout.

猪:一种猪科杂食性平趾有蹄的哺乳动物,包括猪、大食用猪和野猪,具有带厚皮的短粗身体、短颈和可活动的鼻子

The most of the repellent substances can be eluted out of de fatted soybean meal by 90%-95% of hot ethanol, the feeding and growth and development of sil...

用90%~95%的热乙醇进行洗脱处理,可除去大部分摄食忌避物质,改善人工饲料育蚕的摄食性及其生长发育。

Butterfly host plant range: an example of plasticity as a promoter of speciation?

蝶类食性范围是否可算是演化可塑性促进种化的范例?

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。