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对虾幼体
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  prawn larvae
     USING A NEW QUINOLONE DRUG TO CONTROL AND TREAT BACTERIAL DISEASES OF PRAWN LARVAE(PENAEUS CHINENSIS)
     新一代喹诺酮药物防治中国对虾幼体细菌性疾病的试验
短句来源
     TESTS ON THE MUTUAL PREDATORY RELATIONSHIP BETWEEN YOUNG MEDUSAE AND PRAWN LARVAE
     海蜇幼体与对虾幼体相食关系的实验观察
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     The total survival rate was 54%. There was also no great difference between the experimental and contrastive group (X -2 =0.080,P>0.05). 3.The prawn larvae only feeding on this alga could transform from Z 1 into Z 2 stage.
     对虾幼体只能由Z1变态到Z2,且总成活率与对照组角刺藻差异显著;
短句来源
  “对虾幼体”译为未确定词的双语例句
     A more conservative "safe level" was 0. 20mg/dm3∑NH+4(NH3)-N (0. 017mg/dm3NH3-N).
     长毛对虾幼体耐受氨的安全含量为1.20mg/dm3∑NH+4(NH3)-N(010mg/dm3NH3-N),更为稳妥的安全含量为0.20mg/dm3∑NH+4(NH3)-N(0.017mg/dm3NH3-N)。
短句来源
     In sea water of 26~28℃, salinities 27.2~29.7 and pH8.1~8.3, it rates about 10d from naupilaf stage 1 (N_1) to postlarval stage 1 (P_1), with a survival rate of 81.9%.
     在水温26~28℃,pH8.1~8.3,海水盐度27.6~29.7的条件下,刀额新对虾幼体从无节幼体第一期(N_1)培育至仔虾幼体第一期(P_1),历时10d,成活率81.9%;
短句来源
     A "safe level "calculated for larval of farmed P. penicillatus is 1. 38 mg/dm3 NO-2 -N. A more conservative "safe level,' is 0. 16 mg/dm3 NO-2 -N.
     推算出长毛对虾幼体培育期的NO-2-N安全含量为1.38mg/dm3,更为稳妥的NO-2-N安全含量为0.16mg/dm3。
短句来源
     Different kinds of medicines were used to treat filth disease of Zoea of Litopenaeus vannamei . The results indicate that protozoacide 3.0×10 -6 in concentratoin mixed either with effectual chlorine 0.15×10 -6 in concentration NaClO +1.5mg/L or with of 0.01×10 -6 in concentrations oxytetracycline and concentrations +1.5mg/L of oxytetracycline can cure this disease.
     用不同药物治疗凡纳对虾状幼体黏脏病 ,结果表明 :用浓度为 3× 10 - 6 养虾丹、混合施用 0 .15× 10 - 6 次氯酸钠 + 1.5mg/L土霉素或 0 .0 1× 10 - 6 的亚甲基蓝 + 1.5mg/L土霉素可治疗凡纳对虾幼体黏脏病
短句来源
     Shrimp larvae challenged with 2.5 × 103-2.5 ×107 cfu /ml basteria by immrsion method showed significant mortalities in the nauplii, zoeae and mysis1-2larvas, but not in the postlarvae.
     利用浸泡感染法以2.5×103—2.5×107cfu/ml浓度的细菌感染不同发育时期(无节幼体期、蚤状期、糠虾期和仔虾期)的中国对虾幼体
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  相似匹配句对
     ENERGY METABOLISM OF PENAEUS ORIENTALIS LARVAE
     中国对虾幼体的能量代谢
短句来源
     ULTRASTRUCTURE OF COMPOUND EYE IN THE LARVAL STAGES OF PENAEUS CHINENSIS
     中国对虾幼体复眼的超微结构
短句来源
     STUDIES ON DIGESTIVE ENZYMES OF PRAWN COMPARATIVE STUDIES ON THE ACTIVITIES OF DIGESTIVE ENZYMES OF CULTURED PRAWN (Penaeus orientalis Kishinouye) FOUND IN HUANGDAO ISIAND
     对虾消化酶的研究
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     THE DAWN OF SHRIMP CULTULE
     对虾养殖的曙光
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  prawn larvae
The Role of Mangroves in Retaining Penaeid Prawn Larvae in Klang Strait, Malaysia
      
The mangrove-fringed Klang Strait, Malaysia, retains approximately 65 billion penaeid prawn larvae annually prior to their settlement in coastal nursery grounds.
      
Rearing of prawn larvae, Penaeus japonicus, fed soy-cake particles and diatoms
      
The in situ experiments demonstrated that the predominantly diatom flora in Albatross Bay can provide a nutritionally adequate environment for prawn larvae even at seasonally low levels.
      
on penaeid prawn larvae were examined using in situ and laboratory rearing experiments and plankton surveys in Albatross Bay, Gulf of Carpentaria, Australia.
      
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The food ingestion and absorption of the zoea and mysis larvae of penaeus penicillatus were investigated with 35S (35S-Methionine) labelling technique and the following results were obtained.At Zoea-I stage, p.pencieilliatus larva is a phytophagous feeder. The food habit begins to change during zoea-II stage. At Zoea-III stage the animal is a mixfeeder and when the animal emerges as mysis, it appears to be predatory.Using labelled Chaeloceros sp. as food stuff, it was found that the filtering rate of zoea decreases...

The food ingestion and absorption of the zoea and mysis larvae of penaeus penicillatus were investigated with 35S (35S-Methionine) labelling technique and the following results were obtained.At Zoea-I stage, p.pencieilliatus larva is a phytophagous feeder. The food habit begins to change during zoea-II stage. At Zoea-III stage the animal is a mixfeeder and when the animal emerges as mysis, it appears to be predatory.Using labelled Chaeloceros sp. as food stuff, it was found that the filtering rate of zoea decreases with the raising of the diet density up to the level of 104cells/ml., and remains at chat level in raising the diet density still further.The feeding rate on Chaetoceros sp. and the predatory rate on the nauplius of Artemia salina increase with the raising of the diet density, and remain at that level in increasing, the density still further.For Penaeus larva, the utilizable proportion of the food decreases with the raising of the diet density, and remains at a lower level in further raising of the density.Tne intensities of the ingestion and absorption increase markedly with the development of the larva.It seems that superfluous feeding may appear in diet density higher than the optimal level.

本文用~(35)S标志测定了长毛对虾(Penaeus penicillatus Alcock)溞状幼体和糠虾幼体对饵料的摄食与吸收,得到如下结果: 长毛对虾的溞-1期是植物食性的,溞-2期食性开始转变,溞-3期转为混合食性,糠-1期进而变为捕食性的。用标志角毛藻(Chaetoceros sp)为饵料,长毛对虾溞状幼体的清滤率在一定的饵料密度范围内随着饵料密度的增加而下降,当密度增至10~4个细胞/毫升时稳定于一个较低的水平上。对角毛藻的摄食率和对卤虫(Artemia Salina)无节幼体的捕食率都随着饵料密度的增大而增大,并在饵料密度增至某值之后维持不变。吸收率与饵料密度的关系同摄食率或捕食率的情况相似。长毛对虾幼体时饵料的利用率随饵料密度的增大而降低,并在进一步增大饵料密度时稳定于一个较低水平。摄食和吸收的强度随着长毛对虾幼体的发育而增强。当饵料密度大于最适密度时,将产生“过剩摄食”。

The culture pavlova gyrans was introduced into our laboratory from the Culture Coll- ection of Algae at the University of Texas at Austin,Texas,USA in October,1982.After cultivation expansion,the preliminery experiments on its probability as food for mollusc and crustacean larvae were made.It was shown that this algae can be used during the time from the “D-form”to eyed larvae of the Mytllus edulis's life cycle and for the lavvae of Penaeus orientalis it has similar effect to the Nitzchia cloaterium.In order...

The culture pavlova gyrans was introduced into our laboratory from the Culture Coll- ection of Algae at the University of Texas at Austin,Texas,USA in October,1982.After cultivation expansion,the preliminery experiments on its probability as food for mollusc and crustacean larvae were made.It was shown that this algae can be used during the time from the “D-form”to eyed larvae of the Mytllus edulis's life cycle and for the lavvae of Penaeus orientalis it has similar effect to the Nitzchia cloaterium.In order to apply the algae to the aquaculture extensivly we made this work.The results showed that relative growth exponent of Pavlova gyrans was about 0.2 with a stationary phase over ten days. The suitable environment conditions for this algae are as follows.The growth occured at the temperature of 5°-30℃,and the best growth occured at about 26℃.Growth in the seawater of specific gravity 1.003—1.045 had no obvious difference.The lower levels of salinity was better.This algae had a normal growth in medium with pH ranging from 5— 9.The light intensity changed from 500Lux to 3000 Lux did not effect distinct change in growth and reproduction.The maximum light intensity may be at 3000Lux.

Pavlova gyrans是我院于1982年从美国引进的一种单胞藻。经初步试验,它可作为贻贝和对虾幼体的饵料,本文就其繁殖特征和影响其生长的因子如温度、光照、盐度、pH等做了单因子和多因子正交试验,得到可供参考的数据:适温范围为5-30℃,最适26℃左右,光照强度在500-3000Lux即可满足其生长要求,培养海水比重1.003-1.045,pHs-9都可使其生长繁殖,低盐度环境对其生长更为有利。就其生长条件来看,Pavlova gyrans适于培养作为水产动物养殖中幼体的饵料。

The study results on culture conditions and application of a marine diatom Chaetoceros muelleri were reported in this paper. 1.The temperature range for growth and reproduction of Chaetoceros muelleri was 5℃ to 40℃.The optimal temperature is about 30℃.The lethal tempera- ture is 45℃. 2.When light intensity was 1,000 Lux to 12,000 Lux(12:12 light:dark cycle),the correlation of growth with it was positive (r=0.859,P<0.05). When photoperiod was 6 hours to 24 hours (light intensity,7,000 Lux),the growth was positively...

The study results on culture conditions and application of a marine diatom Chaetoceros muelleri were reported in this paper. 1.The temperature range for growth and reproduction of Chaetoceros muelleri was 5℃ to 40℃.The optimal temperature is about 30℃.The lethal tempera- ture is 45℃. 2.When light intensity was 1,000 Lux to 12,000 Lux(12:12 light:dark cycle),the correlation of growth with it was positive (r=0.859,P<0.05). When photoperiod was 6 hours to 24 hours (light intensity,7,000 Lux),the growth was positively correlated with time (r=0.901,P<0.05).In mass culture,the optimum light intensities is 7,000-—9,000 Lux and the photoperiod from 10 to 16 Hours. 3.When NaNO_3,NH_4Cl and H_2NCONH_2 were used as nitrogen sources for culture medium it was found that H_2NCONH_2 had the best advantageous effect on growth (K=1.318),and the next were NH_4Cl (K=1.266) and NaNO_3 (K=1.247).Adding suitable amount of soil extract or shellfish soup to the inorganic media may efficiently promote the growth and reproduction.The final growth yields were increased 64.6% and 73.0% respectively than the control. 4.Decreasing salinity properly may stimulate growth and reproduction in mass culture.The optimum salinity for growth of the diatom was 25‰.On the other hand,if the media was added with 0.02% sellfish soup,salinity de- creasing has no effects on growth and reproduction of the alga. 5.If added with 0.5ml/L of sodium hypochlorite solution (about 11% chl- orine W/L) to the sea water,microorganisms and protozozns were killed.And then the residual chlorine in the sea water was neutralized with an equal vol- ume of sterilized Na_2S_2O_3 solution (1N),there were no effect on the growth and reproduction of the alga. 6.The correlation of final growth yields with intial inocula was positive, although the growth rates was inversely proportional to its inocula.Therefore, optimum intial inocula of Erlenmeyer flask culture (Culture Step Ⅰ) and carboy culture (Culture Step Ⅱ) were 5—10×10~4 cells/mL,and concrete tank culture (Culture Step Ⅲ),was 25—30×10~4 cells/mL. 7.Keeping the alga of exponential growth stage in refrigerator (4—6℃), it could be preserved as long as 6 months. 8.Usnig this diatom as larval food for prawn (Penaeus orientalis,Zoea Ⅰ→ Mysis Ⅲ),sea cucumber (Stichopus japonicus,Auricularia→juvenile),clams (Ru- ditapes phillippinarum and Area granosa,straight hinge veliger→juvenile),their survival were 85%,45%,36—50% and 11% respectively.

本文报告了一种海产硅藻——牟氏角刺藻的培养条件和应用方面的一些研究结果。1.牟氏角刺藻在5~40℃的温度范围内都能生长繁殖,最适生长温度为30℃,45℃是藻的致死温度。2.当光照强度在1,000~12,000勒(光周期为12:12)时,藻的生长量与光照强度呈正相关(r=0.859,p<0.05),当光照时间在6~24小时(光照强度为7,000勒)时,藻的生长量与光照时间亦呈正相关(r=0.901,p<0.05),在大量培养牟氏角刺藻时,适宜的光照条件是光照强度为7,000~9,000勒,光照时间为10~16小时。3.牟氏角刺藻能利用硝酸盐、铵盐和尿素等多种形式的氮源,其中以尿素的效果最好(■=1.318),铵盐次之(■=1.266),硝酸盐稍差(■=1.247)。在无机自然海水培养液里添加2%的土壤抽出液或0.02%的贝汤,能有效地刺激藻的生长繁殖,最后生长量分别是对照组的164.6%和173.0%。4.大量培养牟氏角刺藻时,适当降低盐度可促进藻的生长。牟氏角刺藻的最适生长盐度约为25‰。但当在培养液里添加了0.02%的贝汤后,降低盐度并不能更多地促进藻的生长。5.用0.05%的次氯酸钠溶液(含氯约11%)处...

本文报告了一种海产硅藻——牟氏角刺藻的培养条件和应用方面的一些研究结果。1.牟氏角刺藻在5~40℃的温度范围内都能生长繁殖,最适生长温度为30℃,45℃是藻的致死温度。2.当光照强度在1,000~12,000勒(光周期为12:12)时,藻的生长量与光照强度呈正相关(r=0.859,p<0.05),当光照时间在6~24小时(光照强度为7,000勒)时,藻的生长量与光照时间亦呈正相关(r=0.901,p<0.05),在大量培养牟氏角刺藻时,适宜的光照条件是光照强度为7,000~9,000勒,光照时间为10~16小时。3.牟氏角刺藻能利用硝酸盐、铵盐和尿素等多种形式的氮源,其中以尿素的效果最好(■=1.318),铵盐次之(■=1.266),硝酸盐稍差(■=1.247)。在无机自然海水培养液里添加2%的土壤抽出液或0.02%的贝汤,能有效地刺激藻的生长繁殖,最后生长量分别是对照组的164.6%和173.0%。4.大量培养牟氏角刺藻时,适当降低盐度可促进藻的生长。牟氏角刺藻的最适生长盐度约为25‰。但当在培养液里添加了0.02%的贝汤后,降低盐度并不能更多地促进藻的生长。5.用0.05%的次氯酸钠溶液(含氯约11%)处理海水,能杀死海水中的微生物和原生动物。用1 N 浓度的等量的硫代硫酸钠中和海水中的余氯后,对牟氏角刺藻的生长繁殖没有任何不良影响。6.虽然初始接种量与藻的最后生长量成正比,但接种量与生长率却成反比。因此,三角烧瓶培养和大玻瓶培养的起始接种量以5~10×10~4个细胞/毫升较为合适;大池培养的起始接种量用25×104个细胞/毫升的浓度较为适宜。7.将处于指数生长期的藻液,贮藏在家用电冰箱(4~6℃)中,牟氏角刺藻可存活6个月左右。8.投喂牟氏角刺藻,对虾幼体(溞状Ⅰ期→)糠虾Ⅲ期)的成活率可达85%;刺参幼体(耳状幼体→稚参)的成活率45%;菲律宾蛤仔幼虫(D 型幼虫→稚贝)的成活率为36~50%;泥蚶幼虫(D 型幼虫→稚贝)的成活率为11%。

 
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