查询词典 larvae

Plutella xylostella larvae of a strain highly resistant to spinosad were used as hosts to rear the parasitoid Cotesia plutellae. When the parasitoids had developed to the stage of early instar larva, the host larvae were treated with 50 mg/L spinosad on the terga by topical application and then fed with cabbage leaves treated with 50 mg/L spinosad to allow the host larvae and the parasitoid larvae to develop. Three days after treatment, the parasitoid larvae inside the host were collected by dissecting the host larvae. The body fluid of P. xylostella and the bodies of parasitoid larvae were then analyzed with HPLC. Both of the active components, spinosyn A and spinosyn D, of spinosad were detected in the body fluid of host larvae and in the bodies of parasitoid larvae, and the residue concentrations were 2.79 mg/L and 0.94 mg/L in the host and the parasitoid respectively.

以对多杀菌素高抗的小菜蛾Plutella xylostella幼虫作为菜蛾绒茧蜂Cotesia plutellae的寄主，待绒茧蜂发育到1龄幼虫时，将浓度为50 mg/L的多杀菌素点滴到寄主幼虫背板上，随后让寄主幼虫取食经50 mg/L多杀菌素处理过的甘蓝叶片，寄主幼虫和其体内的蜂幼虫再发育3天后，将寄主幼虫解剖取出蜂幼虫，用高效液相色谱法对经多杀菌素处理的小菜蛾幼虫体液以及绒茧蜂幼虫匀浆液进行检测，结果多杀菌素的2个活性成分spinosyn A和spinosyn D均被检测到，两者的多杀菌素残留浓度分别是2.79 mg/L和0.94 mg/L。

More simply, that is, Vespertilionidae bat moths for many types of other offspring, spawning in the soil, after the eggs into larvae, previously, the Cordyceps fungus penetrated larvae absorb the material as the survival of larvae of the nutritional conditions, and the larvae continue to breeding, resulting in larvae filled with mycelium, in the coming year 5-7 when the weather gets warmer months, since the larvae grow yellow or light brown head and seat of the bacteria, the growth was out of the ground after the grass stalk-like, the result we usually see caterpillar fungus.

通俗地讲，就是蝙蝠科许多种别的蝙蝠蛾为繁衍后代，产卵于土壤中，卵之后转变为幼虫，在此前后，冬虫夏草菌侵入幼虫体内，吸收幼虫体内的物质作为生存的营养条件，并在幼虫体内不断繁殖，致使幼虫体内充满菌丝，在来年的5－7月天气转暖时，自幼虫头部长出黄或浅褐色的菌座，生长后冒出地面呈草梗状，就形成我们平时见到的冬虫夏草。

In addition, the maximum velocity in larvae was significant higher than those in pupae and adults. In vitro inhibition studies of larvae AChE indicated that the I50 values of 20-d larvae were higher than those of 10-d larvae when treated with eserine, malaoxon and carbaryl, respectively, suggesting that AChE in 20-d larvae was less sensitive to the inhibitors.

通过对幼虫AChE离体抑制作用测定表明，毒扁豆碱、马拉氧磷和西维因对20d龄幼虫的抑制中浓度I50均高于10d龄幼虫，说明20d龄幼虫体内的AChE对3种抑制剂的抑制作用更不敏感。

The first part discusses about the effects of the five factors:temperature,relative air moisture,rate of frass sifting,density of larvae,fodder water percentage to growth speed and survival rate of older mealworm (Tenebrio molitor L.) larvae through rotational composite design of quadratic regression. Two models were established to describe the effects of the five factors. The models showed that percentage of fodder water is the major factor that has effect on the growing speed of T. molitor larvae,and fodder water is the major factor on death rate. The models also show that temperature on growth speed,temperature and fodder have important effects on death rate,and the significant test showed they have significant difference on 1% or 5% level. From the two models,by frequency analysis,we can get the optimizing rearing condition,in which the mealworm larvae overweight 10% per day,temperature is 25-26 ,frass sifting rate is once 2-4 days,density of larvae is 0.61-0.79 g/cm2,fodder water is 33.27%-39.71%. And the rearing condition,in which total death rate of T.

第一部分：采用五因素二次正交旋转组合设计，以黄粉虫幼虫饲养过程中饲养温度(X_1)相对湿度(X_2)、虫粪筛除频率(X_3)、饲养密度(X_4)以及饲料含水量(X_5)五因素为参试因素，考查它们对黄粉虫高龄幼虫的生长及存活的影响，建立了以黄粉虫幼虫增重率及死亡率为目标函数的回归模型，并进行了简化： Y_增=127.5079+18.6559x_5+2.7894x_3x_4-2.3854x_3x_5-3.0594x_1~2+1.8241x_3~2-3.8559x_5~2 Y_死=1.7459+0.4108x_1+0.0975x_2+0.9025x_4+0.3442x_5+0.0834x_1~2+0.3060x_4~2-0.2623x_5~2 分析结果表明：影响黄粉虫幼虫生长后期增重及死亡的主要因素分别为饲料含水量和饲养密度；饲料含水量和温度对黄粉虫增重有着重要的影响，饲养密度、温度、饲料含水量对黄粉虫的死亡有着重要的影响，其影响均达1％或5％显著水平；黄粉虫幼虫后期日增重率大于10％的饲养条件为：温度26～27℃、筛粪频率2～4天／次、饲养密度0.61～0.79g／cm~2、饲料含水量33.27～39.71％。

In this paper, an important pest of cruciferous vegetables xylostella and its two dominant species in the parasitic wasp - Cotesia plutellae bee, Diadegma semi-closed two parasitic system studied two parasitic wasps of Nutritional regulation of the host Plutella xylostella, from parasitic to parasitic found after the fifth day, five days, all groups the body weight of diamondback moth larvae are showing an increasing trend, not parasitic larvae of the diamondback moth has been higher than was body weight parasitic larvae of Plutella xylostella, and was Ichneumonidae parasitic larvae of the diamondback moth important than being clear Braconidae parasitic weight of the diamondback moth larvae.

本文以重要的十字花科蔬菜害虫小菜蛾及其两种优势种内寄生蜂——菜蛾盘绒茧蜂、半闭弯尾姬蜂两个寄生体系为研究对象，研究了两种寄生蜂对寄主小菜蛾营养的调控，发现从寄生至寄生后的第五天，五天时间内，所有组小菜蛾幼虫的体重均是呈现增加的趋势，未被寄生的小菜蛾幼虫体重一直保持大于被寄生小菜蛾幼虫，而且被姬蜂寄生的小菜蛾幼虫体重要明显的大于被茧蜂寄生的小菜蛾幼虫体重。

The third-stage larvae were developed to fourth-stage larvae (the most optimal develop rate was 41%) when cultured in defined complete medium, further, cultured in defined incomplete medium, was examined no develop and a poorly survival rate. When the third-stage larvae were cultured in the defined complete medium under 37℃ and 5% CO2 in air, the larvae were began to develop to the fourth-stage larvae in cultured for 30 days, being enclosed within the sheaths of the third molts of life cycle.

广东住血线虫的第三期幼虫以MEM medium添加胺基酸、脂肪酸及碳水化合物的培养基在37℃含有5％ CO2的无菌培养箱中，培养至第21天已发育至第三期幼虫中期的阶段，第24天已发育至第三期幼虫末期的阶段，第30天开始出现带鞘的第四期幼虫，第36天则观察到虫体明显变长并蜕去外鞘及第三期幼虫特有的眼点消失的第四期幼虫。

Itimes of that of controlled larvae. The mortal peaks of larvae wasl-7d and 29-35 d, in which most of treated larvae was killed. The transgenic Betula platyphylla could reduce the ecdysis index of larvae.

转基因植株能够延迟幼虫蜕皮，降低幼虫蜕皮指数，实验30天时对照幼虫蜕皮指数是3.323；处理幼虫蜕皮指数在2.933～3.038之间，并且处理幼虫无一能够完成幼虫期达到化蛹。

Our study displayed that HmgD overexpression mutant died as late third instar larvae and malformed pupae during the larvae-prepupa transition,suggests that overexpression of HmgD has effects rather on the third instar larvae stage than on the first and second instar larvae from the mutant could not pupate.

结果表明，HmgD广泛过量表达突变体幼虫在一龄和二龄期发育正常，而在三龄幼虫化蛹时发育异常，发育停滞在三龄幼虫末期至预蛹的阶段，即HmgD过量表达的幼虫不能正常化蛹。

Then the number of larvae in the stem increased sharply for a great number of newly-hatched larvae appeared. Though some larvae transferred from stem to root before overwintering, about 43% of the larvae overwintered in tree stems at the height between 40 and 120 cm in the end of September till after the overwintering the next year.

之后，由于初孵幼虫的大量出现，使干部幼虫数量急剧增加，越冬前，虽然有部分转移至根部危害，但到9月末仍有近43%的幼虫停留在树干40～120cm处越冬，直到次年越冬结束。

The results showed that the antlions fed on M. domestica larvae obtained significantly higher body weight, pupal weight, relative growth rate and pupation percentage, and significantly shortened larval duration when compared with the antlions fed on S. litura and S. exigu larvae. When feeding on C. cephalonica larvae, antlions had similar body weight, pupal weight and pupation percentage, but significantly decreased relative growth rate and prolonged larval duration, than those fed on M. domestica larvae.

结果显示，用家蝇幼虫饲养的蚁狮，其体重增长、相对生长率、化蛹率、蛹重均显著高于用斜纹夜蛾和甜菜夜蛾幼虫饲养的蚁狮，而幼虫历期则比斜纹夜蛾和甜菜夜蛾幼虫饲养的短；用米蛾幼虫饲养，虽然蚁狮体重增长、化蛹率和蛹重与用家蝇幼虫饲养的差异不显著，但其相对生长率却显著低于用家蝇幼虫饲养的蚁狮，幼虫历期也比用家蝇幼虫饲养的明显延长。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。