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temperature and food
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  温度和食物
     Therefore, this study indicates that: (1) between-island differences are evident in temperature and food availability, which may partly account for the between-population differences in life histories of this species;
     本研究表明:(1)温度和食物可利用性存在岛屿间差异,岛屿种群间生活史特征差异可能与之有关;
短句来源
     the effect of environmental factors such as photoperiod, temperature, and food composition on serum leptin levels;
     光周期、温度和食物等环境因子对瘦素浓度的影响 ;
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     Behaviors of Sucking and feeding in infant were influenced by temperature and food.
     幼儿的哺乳和取食行为发育受外界温度和食物变化的影响。
短句来源
     EFFECT OF TEMPERATURE AND FOOD CONCENTRATION ON RESTING EGG FORMATION OF FRESHWATER ROTIFER BRACHIONUS CALYCIFLORUS
     温度和食物浓度对萼花臂尾轮虫休眠卵形成的影响
短句来源
     EFFECT OF TEMPERATURE AND FOOD CONCENTRATION ON THE GROWTH AND REPRODUCTION OF SIMOCEPHALUS VETULUS
     温度和食物浓度对老年低额溞生长与生殖的影响
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  “temperature and food”译为未确定词的双语例句
     Energy budget at different temperature and food concentration in Manila clam Ruditapes philippinarum
     不同温度与饵料浓度下菲律宾蛤仔的能量收支
短句来源
     EFFECT OF HIGH TEMPERATURE AND FOOD DENSITY ON DYNAMICS OF THE RESTING EGGS OF BRACHIONUS CALYCIFLORUS EXPERIMENTAL POPULATION
     高温高饵料密度对萼花臂尾轮虫实验种群休眠卵动态的影响
短句来源
     Laboratory stuies on the effect of temperature and food on pre reproductive period,fecundity and life span showed that the pre reproductive period was only 2\^13±0\^67 days under 28℃,and food or temperature had no significant effect on pre reproductive period. The physiological period fitting for migration was quite short,only 1~2 nights.
     研究了温度和食料对生殖前期、产卵量、寿命等的影响 ,证实在 2 8℃下生殖前期仅 2 .13± 0 .67d ,温度、食料等对成虫生殖前期的影响不明显 ,可见适合其迁飞的生理时期较短 ,仅为 1~ 2个夜晚 .
短句来源
     EFFECTS OF ECOLOGICAL FACTORS ON THE POPULATION DYNAMIC OF BRACHIONUS CALYCIFLORUS──THE EFFECT OF TEMPERATURE AND FOOD DENSITY
     影响萼花臂尾轮虫种群增长的生态学因子的研究──温度和饵料密度的影响
短句来源
     Within experimental temperature and food concentrations, the scope for growth (SFG) increases with the increase of food concentrations and water temperatures, but at lower temperature (9 ℃) or food concentration , the SFG had negative values.
     温度通过影响耗氧率而显著影响单位软体部干重的最小碳需求量。 在9~22℃范围内,菲律宾蛤仔的生长余力(SFG)随温度和饵料浓度的升高而增加,在较低温度和饵料浓度下蛤仔的SFG均出现负值。
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  相似匹配句对
     Food and temperature
     食品与温度
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     The temperature for R.
     越冬卵孵化起点温度低于4℃。
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     ON TEMPERATURE
     谈谈温度
短句来源
     Food
     心路历程——食物
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     The Research of the Food Low Temperature Logistics
     食品行业冷链物流研究
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  temperature and food
The degree of vertical migration varies with temperature and food conditions.
      
These in situ studies indicate that temperature and food supply are the major determinants of HNF abundance and productivity.
      
However, during the light change at dusk the Daphnia are still in the hypolimnion, where no fish kairomone is present and both temperature and food availability is low.
      
Age at maturity was positively influenced by increased temperature and food concentrations, whereas no direct kairomone effects were detected for this trait.
      
Life-history responses to two concentrations of fish released info-chemicals at two temperature and food regimes were investigated for one clone of Daphnia hyalina × galeata.
      
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Rearing experiments with field observations were carried out to determine tbe number of larval instars of the paddy borer. The results obtained are summarized as follows: (1) More than 80 percent of the larvae observed have four instars, and less than 10 percent, five instars or more. The number of larval instars depends upon at least two factors, temperature and food. Three moults are prevalent in the larvae reared at temperature of 29-35℃., while four moults appear more often in those reared at...

Rearing experiments with field observations were carried out to determine tbe number of larval instars of the paddy borer. The results obtained are summarized as follows: (1) More than 80 percent of the larvae observed have four instars, and less than 10 percent, five instars or more. The number of larval instars depends upon at least two factors, temperature and food. Three moults are prevalent in the larvae reared at temperature of 29-35℃., while four moults appear more often in those reared at temperature of 23-29℃. Most of the larvae fed on the rice plant of the tillering and the late spike-forming stage, moult three times. The proportion of the larvae with more than three moults increases in the rice plant of the early spike-forming stage. There is no difference in the number of larval instars between sexes. (2) The distribution of the width of head capsule is found to be overlapped between the preceding and succeeding stages. (3) The distinction among larval instars by the characters of prothoracic notum and crochets instead of the width of head capsules is recommended in this paper.

通过数年来的田間观察和室內飼育結果,江苏地区三化螟幼虫大多数为4龄,少数4龄以上。幼虫龄数多少常受生活环境的影响。气温在29—35℃时,多为4龄;23—29℃时,4龄以上的虫数則增多。幼虫的营养:全部食分蘖期水稻和1—2龄时食孕穗(或分蘖)、3—4龄食圓秆水稻的多数脫皮三次;全部食圆秆水稻的,则4龄以上的虫数增多。雌、雄虫的龄数没有显著差别,但雌虫在低温和食料不适时,脫皮三次以上的虫数也会增加。幼虫从2龄开始,前后龄的头寬有重迭現象。1—4龄的前胸背板和4—5龄的趾钩彼此都有显著的差异,可作为鑑别虫龄的依据。幼虫历期同样受温度、营养条件等影响而有长短,雌虫的历期一般长于雄虫。

The structure of the female reproductive system is observed and its developmpnt may he divided into five stages, namely, (1) ovarioles in undeveloped state, (2) ovarioles developed and containing immature eggs, (3) a few ovarioles contain full-grown eggs, (4) more ovarioles contain full-grown eggs and vacuity appears in some ovarioles, (5) ovarioles become withered.Temperature and food availability may influence the ovarial development of the macropterous females, but photoperiod shows no significance...

The structure of the female reproductive system is observed and its developmpnt may he divided into five stages, namely, (1) ovarioles in undeveloped state, (2) ovarioles developed and containing immature eggs, (3) a few ovarioles contain full-grown eggs, (4) more ovarioles contain full-grown eggs and vacuity appears in some ovarioles, (5) ovarioles become withered.Temperature and food availability may influence the ovarial development of the macropterous females, but photoperiod shows no significance in our tests. The ma-cropterous females have been shown to delay ovarial development under higher and lower temperature conditions or when feeding on yellow mature rice.The juvenile hormone analogue ZE-619 is applied to the females through treating unsuitable food plants will cause the ovaries to develop rapidly and iiormaly. This fact demonstrates that juvenile hormone controls the ovarial development in this insect.The state of ovarial development was examined in the whole migrating process. In the emigrating area, the ovaries of the macropterous females were mainly in the stage (1) in the rice fields. But in rice fields of the immigrating area, the females containing ovaries developed beyond stage (1). The ovaries of females caught by alpine nets during the migratory jounrney were in stage (2).According to the result stated above, an model of the ovarial development related to migration is suggested in the paper.

描述了褐飞虱雌虫卵巢的构造和发育过程中的变化。根据其形态特征,划分为五个发育级。 环境条件对长翅型雌虫卵巢发育有明显的影响。在高温、低温或取食黄熟期水稻时,卵巢发育停滞;光照期对印巢发育无明显影响。证实了揭飞虱雌虫卵巢的发育是受体内保幼激素所控制。 1977年在我国南方稻区五个点上系统解剖捕获的褐飞虱雌虫,观察了卵巢在迁飞过程中的发育状态。在虫源迁出地区,由于水稻黄熟和温度的影响,田间雌虫卵巢出现生殖滞育现象。在迁飞运行中受高空低温和停止取食的影响,卵巢仍处于滞育状态。在迁入区降落后,温度、食料适宜,解除了生殖滞育,卵巢继续发育而定居繁殖。 提出了褐飞虱卵巢发育与迁飞过程关系的模式图。

Observations were carried out both in the laboratory and under natural conditions on the life history of Farcipomyia (Lasiohelea) taiwana (Shiraki). Laboratory rearing methods for the immature stages were established in order to study the metamorphosis of this midge.In the laboratory the midge feeds on suckling mice, newborn albino rats, newborn domestic rabbits, and human blood; and its ovarian development depends on the food,. while no carbohydrate food is taken. After a full bloodmeal, blood digestion and...

Observations were carried out both in the laboratory and under natural conditions on the life history of Farcipomyia (Lasiohelea) taiwana (Shiraki). Laboratory rearing methods for the immature stages were established in order to study the metamorphosis of this midge.In the laboratory the midge feeds on suckling mice, newborn albino rats, newborn domestic rabbits, and human blood; and its ovarian development depends on the food,. while no carbohydrate food is taken. After a full bloodmeal, blood digestion and ovarian development are synchronised in the female. When half fed, its ovarian development is normal and maturation of ovary and egg deposition can proceed as usual. Aside from the high degree of gonotrophic harmony, low degree of gonotro-phic harmony also exists in this mLdge.In general, under laboratory conditions, females feeds on blood and deposits eggs twice, and these activities sometimes may increase to four times. Most of the test tube rearing females deposit eggs 2-4 days after blood feeding at 20-34℃. The percentage of egg deposition among these females is 85-98%. The number of eggs laid by each of these females is 24-147 (79.04 in average).All fertilized eggs can hatch, hatching takes place normally in water, and eggs can endure desiccation. Soil must be kept wet in rearing the immature stages, but too much water is mot good for the pupal stage. Larval stages can be reared in separate rearing medium of a single substance (blood powder, liver powder, yolk powder, yeast powder and algae).The length of the developmental stages varies with the changes in temperature and food, when soil is kept moist. In yolk powder medium at 7-20.2℃., 66-84.5% RH, total length from egg to imago is 136-164 days. In blood powder and liver powder mediums at 15:5-25.4℃., 74-83% RH, the periods from egg to imago are 33-63 days and 38-59 days respectively. In yolk powder and yeast powder media at 18-24.6℃., 72-88% RH, they are 29-35 days and 31-44 days respectively. In algae medium at 20-25.2℃., 76-85% EH, it is 14-39 days.

在重庆地区结合室内、外的情况观察了台湾铗蠓的生活史。台湾铗蠓吸大、小白鼠仔鼠,仔兔和人的血液,碳水化合物在卵巢发育过程中并不需要。雌虫吸取一份充足的血液后,胃血消化和卵巢发育之间是完全一致的。半饱时,卵巢可正常发育产卵。除高级生殖营养外,尚存在着低级生殖营养。 试管饲养下,20—34℃时,多数在吸血后2—4日产卵。产卵率85—98.12%。每雌产卵24—147个,平均79.04个。 受精卵均能孵化,在水内也能正常孵化,卵对干燥具有一定的耐受性。饲育期间,土壤必须保持湿润,多水对蛹期极为不利。幼虫以血粉、肝粉、蛋黄粉、酵母粉和海绵藻为食物。 幼期发育的时间:蛋黄粉培养,在7—20℃,RH66—84.5%时,自卵至成虫为136—164天,血粉、肝粉培养,在15.5—25.4℃,RH74一83%时,自卵至成虫分别为33—63和38—59天。蛋黄粉和酵母粉培养,在18—24.6℃,RH72—88%时,自卵至成虫分别为29—35和31—44天。海绵藻培养,在20—25.2℃,RH76—85%时,自卵至成虫为14—39天。

 
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