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双语推荐:头壳宽度

通过测量苜蓿籽蜂幼虫头壳宽度的方法,对苜蓿籽蜂幼虫龄期划分进行了研究。结果得出苜蓿籽蜂幼虫共4龄,1龄~4龄幼虫的头壳宽度分别为(0.182±0.0093),(0.261±0.0093),(0.346±0.0098),(0.448±0.0109)mm。经统计分析得到其幼虫龄数(X)与头宽均值(Y)的关系式为Y=0.0883X+0.0885,r=0.9982。
By measuring the width of head capsules of the alfalfa seed chalcids' larva,Bruchophagus roddi(Gussakovsky).The results showed that there were 4 instars in larval stage of the alfalfa seed chalcids.The average widths of head capsule from 1 to 4 instars were(0.182±0.0093),(0.261±0.0093),(0.346±0.0098),(0.448±0.0109) mm.The linear regression equation of the instar(X) against the width of head capsule of larvae(Y) was:Y=0.0883X+0.0885,and r=0.9982.

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本文建立了1∶10的二维钢制安全壳外侧辐射换热和自然对流模型,并用先进流体计算软件Fluent对流场进行计算,得到了完整流道下的速度流场、钢制安全壳上封头顶部的空气速度矢量图,并得出钢制安全壳上封头顶部存在空气滞留区的结论。分析了通道宽度、空气进流速度及壁面黑度对通道换热的影响,结果表明:适当的通道宽度和空气进流速度均能提高通道的换热和换热效率;壁面黑度的提高能明显增强钢制安全壳上封头处的辐射换热。
A 1∶10 2D model of radiation heat transfer and natural convection outside the 2D steel containment was established in this paper .The advanced computational fluid dynamic analysis software Fluent was applied to complete the calculation . The velocity nephogram and the velocity vector diagram on the head of steel containment were obtained ,and the results show that there is an air stagnant zone on the head of steel containment .The influence of channel width ,airflow speed and emissivity of wall surface on heat transfer was studied as well .The appropriate channel width and airflow speed can enhance the heat transfer and the efficiency of heat exchange .T he increase of the emissivity of wall surface can obviously improve the radiation heat transfer on the head of steel containment .

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描述金斑喙凤蝶4个虫态的形态特征;通过野外考察和实验室的观察,研究了该蝶的生物学特性,该蝶在井冈山保护区1年发生2代,第一代成虫为越冬蛹羽化而成,时间为每年的4~6月,第二代成虫发生期为7~9月,幼虫5龄,较为准确的记录了各幼虫龄的体长、头壳宽度、取食量。
The four morphological characteristics of Teinoplpus aureus Mell were described;According to investigation in the open and in the lab, the biological characters of this species were studied. There are two generations within one year in Jianggangshan, the first generation overwinters as pupa and emergences in April to June. The emergence period of second generation is July to September. Larva was the fifth stage. The length of the body, breadth of the head and eating capacity for each stage of larva were accurately recorded.

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通过比较人工繁育4代后的小金蝠蛾(Hepialus xiaojinensi Tu et Ma)4龄幼虫以及成虫在外部形态、羽化、交配、产卵、寿命等生物学特性与野生亲本间的生物学特征的差异和变化,评价了目前中等规模人工饲养的效果,为蝙蝠蛾的可持续人工大规模培养提供依据和参考。结果显示:人工饲养蝠蛾雌蛾和雄蛾的平均体长、体质量、怀卵量、产卵量、寿命均小于野生,但在羽化、交配、产卵等行为模式上不存在显著差别;与冬虫夏草形成关系密切的4龄幼虫在体长、体质量、头壳宽度等重要性状差异显著(P0.05)。4代后的种群年平均增长率为44%。证实了人工饲养条件下实现蝠蛾种群的可持续繁衍的可行性。
An experiment was conducted to study the biological characteristics changes between the wild and artificial raised pop-ulation including the wild and raised adult swift moth on morphology, eclosion, mating, spawning and lifespan, and two kinds of fourth instar larvae on the length, weight and head capsule width, and provide some useful suggestion on swift moth artificial raise.The raised adult (male and female) is less than wild samples on average length, weight, fecundity with eggs and spawning .Two populations are similar on lifespan, eclosion and mating.There was significant difference ( p<0.05) in length, mass and shell width.The artificial raised population scale increased by average of 44%each year after four generations.Therefore, the swift moth population can sustain multiply under the artificial raised conditions.

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【目的】明确在广州地区红火蚁Solenopsis invicta的觅食嗜好性,为我国防治红火蚁新型饵剂的研制与开发提供科学依据.【方法】2011年7-11月观察了广州桑园和荒地红火蚁工蚁觅食活动的季节差异和日动态,并分析其摄食食物类别与生境、季节的关系,比较分析了固态型、液态型或防御型工蚁的个体分布.【结果和结论】春、秋季的2种生境中,摄取固态或液态食物的红火蚁工蚁数量在2种生境或夏秋季节间存在显著差异(固态型P<0.01,液态型P<0.05),但这种差异不受生境和季节互作的影响(固态型P=0.3733、液态型P=0.9033).工蚁对液态食物的喜好强于固态食物,携带液态食物的工蚁的平均比例[夏季:(36.58±8.74)%,秋季:(37.60±5.16)%],显著地高于搬运固态食物的[夏季:(8.03±1.66)%,秋季:(7.30±1.71)%].取食固态食物、液态食物以及负责防御的3类工蚁的个体多态性均呈连续性偏态分布,其平均头壳宽度分别为(0.6524±0.0071)、(0.6361±0.0062)和(0.6363±0.0064) mm,而且三者间无显著性差异.
[Objective] To identify the foraging habits of the red imported fire ant Solenopsis invicta Buren in newly invaded region of Guangzhou , and to provide scientific basis for researching and developing new baits to control the fire ant .[Method] The diurnal dynamics and body polymorphism of foragers in the colony of the red imported fire ant were observed by using directly-dissecting underground foraging tunnel at mulberry orchard and barren land in summer and autumn in Guangzhou .[Result and conclusion] The results showed that foraging rates of fire ant workers for liquid-or solid-food were significantly different in habitats and seasons , but no difference in interaction of two treatments .The foraging rates of dietary pref-erence for liquid food in all treatments were significantly higher than those for solid food .The average proportion of workers carring liquid food in crop [ summer: ( 36.58 ±8.74 )%, autumn: ( 37.60 ± 5.16 )%] was significantly higher than the proportio

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