&&&100克 在 水产和渔业 分类中
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&&&&Results of quantitative ELISA showed that HBsAg in transgenic kelp was 0.529 μg/mg soluble proteins on average and the highest value was 2.497 μg/mg, implying that recombinant HBsAg in 2.25 g fresh weight of transgenic kelp corresponded to 15 μg vaccine required in vein injection for one adult.
&&&&定量ELISA显示表达水平为0.125-2.497 μg/（mg可溶性蛋白），平均为0.587 μg/（mg可溶性蛋白），即2.25克鲜海带的抗原表达量等同于静脉注射免疫所需15 μg抗原。
&&&&THe resting metabolic rates of 106 young fish weighing 10.8-422.6 g were measureed with continous—flowing respirometers at 10, 15, 20, 25, and 30℃.
&&&&采用连续流水式呼吸仪，在10、15、20、25和30℃条件下测定了106尾幼鱼(体重10.8～422.6克)的静止代谢率。
&&&&900 Jian carps with initial weight 9.18 ± 0.06g were averagely allocated to 6 treatments with 3 replications per treatment, feeding diets with intact protein(IP) substituted by 0,20,40,60,80,100% enzymatic protein(EP) respectively.
&&&&选择体重为9.18±0.06克的的健康建鲤900尾,平均分成六组(每组设3个重复,每个重复50尾),分别饲喂酶解蛋白替代完整蛋白0、20、40、60、80、100%的试验饲料,试验期80天。
&&&&The primary results can be described in the following respects as:1 Feeding habit Procambarus clarkia (body length were 3.0cm～10.6cm and weight were 1.6g～80.3g) mainly feed on macro-aquatic plant including P. malaianus, H.verticillata et al, whose occurrence rate was 100% and weight percent was 85.6%;
&&&&1．食性 克氏原螯虾(体长3.0cm～10.6cm，体重1.6g～80.3g)的摄食种类主要是竹叶眼子菜、黑藻等大型水生植物，出现频率达100％，重量百分比达85.6％；
&&&&the largest male's body-length was 580 mm,weighing3,850 g,9 years of age.
&&&&雄鱼体长580毫米,体重3,850克,9龄。
&&&&The absolute fecundify (×1000)varies from 5.17 to 36.35 (15.66 on the average); the relative fecundify ranges from112 to 368 (212 on the average )per gram body weight.
&&&&绝对繁殖力5.17—36.65(平均15.66)千粒,相对繁殖力112—368(平均212)粒/克体重。
&&&&Taking the weight gain, food conversionand α-amylase activities of liver-pancreas as evaluation indexes, the results of theexperiment indicate that 36.8-42.27% protein content, 6-12% fat content about 8Kcal/per gram protein calorie--protein ratio (G/P) and
Kcal/Kg in theformulated diet seems suitable.
&&&&试验结果表明:日本沼虾配合饲料适宜蛋白质含量为 36.8—42.27％,适宜脂肪含量为6—12％。 当配合饲料的蛋内质含量在适宜范围内,饲料能量蛋白比(C/P)为8千卡/克蛋白左右,每公斤配合饲料的总能量为千卡是最为适宜的。
&&&&The daily feeding amount per gram body weight lalvae was 0. 1- 0. 2g for life fishes and 0. 18-0. 29g for fish meat everyday. The former food coefficient was 2. 32-3. 12, and the later, 4. 15 - 7. 86. The results also show that the larvae fed artificial mixed feed, if only they were domesticated gradually by higher protein feed.
&&&&具有早晚摄食的习性,平均每克体重日摄食活鱼量为0.1～0.2g,摄食鱼肉量为0.18～0.29g,其饲料系数前者为2.32～3.12,后者为4.15～7.86。
&&&&The results showed that the yearly average sedimentary rate of particulate matter was 278.8 g/(m?2.d) in the areas, and 190.4 μg of TN,472.5 μg of TP and 0.103 g of POM in per gram of the particulate sediments were carried down to the bottom.
&&&&估算结果显示,该海区颗粒物质的年平均沉积速率为278.8g/(m2·d),而每克颗粒物质则携带了190.4μg总氮、472.5μg总磷和0.103g有机物质沉入海底。 沉积物的总氮和总磷含量显示了较明显的季节性变化。
The proper weight of female gametophytes for each lian is 3 gram.
&&&&4、每帘雌性克隆附着用量为3克是适宜的喷洒量。
&&&&Pathogenicity of Shrimp White Spot Syndrome Virus ZheJiang Strain and the Protective Effects of Recombinant Envelope Protein rVp28 Against Virus Infection in the Laboratory Animal, Procambarus Clarkii
&&&&对虾白斑综合症病毒浙江株对实验动物克氏原螯虾的致病性及其重组囊膜蛋白rVp28保护效应的研究
&&&&A STUDY ON MATING BEHAVIOR OF THE CRAYFISH PROCAMBRARUS CLARKII
&&&&克氏原螯虾交配行为的研究
&&&&The feeding rhythm of red swamp crayfish Procambarus clakii was studied indoor under weak light less than 100 lx.
&&&&研究了在<100 lx的弱光条件下雌、雄克氏原螯虾的摄食节律。
&&&&It was found that the crayfish feed on their food in an apparent rhythm(P0.05).
&&&&克氏原螯虾具有明显的摄食节律(P0.05)。
&&&&The maximum food consumption occurred during 18:00—19:00(P<0.05),followed by 19:00—20:00 and 14:00—15:00(P<0.05),and the minimum during the other time.
&&&&克氏原螯虾在18:00-19:00时摄食量最高(P<0.05); 其次为19:00-20:00和14:00-15:00时(P<0.05);
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为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& 1. The deuterium contents of two,bittern samples obtained from Chiaochou Bay in Tsingtao Locality and Kwangchou Bay in Chenkiang Locality were determined by float method. Sp. gr. of Shantung sample is 1.240 (28.0?Be') and that of Kwangtung sample is 1.260 (29.7° Be′). A sample:from Yellow Sea was chosen .as a standard for comparison.All determinations were carried out after normalization of O18 in the sample, by means of CO2-NaHCO3 equilibrium method. In. experiments employing a stream-lined spindle-shaped float... 1. The deuterium contents of two,bittern samples obtained from Chiaochou Bay in Tsingtao Locality and Kwangchou Bay in Chenkiang Locality were determined by float method. Sp. gr. of Shantung sample is 1.240 (28.0?Be') and that of Kwangtung sample is 1.260 (29.7° Be′). A sample:from Yellow Sea was chosen .as a standard for comparison.All determinations were carried out after normalization of O18 in the sample, by means of CO2-NaHCO3 equilibrium method. In. experiments employing a stream-lined spindle-shaped float and setting the observation region of floating in the middle portion of liquid. column, therefore, a larger range of linear relation between temperature and velocity (rising or falling) of float is obtained, that is, temperature range is±0.33℃ and the velocity range is ±0.26 mm/sec.2.Determined results show that the density of Shantung bittern sample (28°Be′) is 4.208 r higher than that of standard sea water sample, that is, the D content of Shantung bittern is 0.0037 mole % D2O higher than that of the standard (Corresponding to 24.03% of D content of standard sea water sample), the density of K,wangtung bittern sample (29.7°Be′) is 6.250 r higher than that of the standard, that is, the D content of Kwangtung bittern is 0.0058 mole % D2O higher than that of the standard (Corresponding to 37.66% of D content of standard sea water sample). The max. experimental error is ±0.6 paring the determined results of these two samples from Shantung and Kwangtung we can see that the Kwangtung sample is more abundant in heavy water content (through °Be′ of two samples are not entirely the same, the density difference is still apparent). This agrees with the expected results caused by the evaporation difference which is due to the latitudinal difference between the two localities (Chenkiang situated at 21° north latitude and Tsingtao at 36° north latitude).4.The density difference between sample water and standard water shows that after solar evaporation of sea water and salting out of sodium chloride the D content in bittern is concentrated as expected. Thus, highly concentrated bittern may be used as raw material for production of heavy water--a valuable information for the comprehensive utilization of sea water and bittern.1.我们用浮沉子法测定了胶州湾青岛地区及广州湾湛江地区盐田析盐后苦卤中重水的含量,山东苦卤此重为1.240相当于28.0°Bé,广东苦卤比重为1.260相当于29.7°Bé,并用黄海某区海水作为标准进行此较。所有测定都在用CO_2-NaHCO_3平衡法使氧同位素正常化以后进行的。实验中采用了流 线型梭把式浮沉子,并使浮沉子升降区观察范围设在液柱中部,获得了较大的浮沉子升降速度与温度间直线性关系的范围。温度范围±0.33°C。速度范围±0.26毫米/秒。 2.测定结果表明:山东苦卤(28°Bé)密度较标准海水高出4.208γ相当于0.0037克分子％D_2O,重水含量较标准海水高24.03％。广东苦卤(29.7°Bé)密度较标准海水高出6.250γ,相当于0.0058克分子％D_2O,重水含量较标准海水高37.66％。 3.比较广东与山东二份样品测定结果,可以看出广东苦卤中重水含量有更多富集(虽然二者°Bé不尽相同,但密度差仍旧是显著的)。这与湛江、青岛两地的纬度差异(湛江——北纬21°,青岛——北纬36°)而引起的蒸发差异所应导致的预期结果是一致的。 4.样品水与标准水的密度差证明海水...1.我们用浮沉子法测定了胶州湾青岛地区及广州湾湛江地区盐田析盐后苦卤中重水的含量,山东苦卤此重为1.240相当于28.0°Bé,广东苦卤比重为1.260相当于29.7°Bé,并用黄海某区海水作为标准进行此较。所有测定都在用CO_2-NaHCO_3平衡法使氧同位素正常化以后进行的。实验中采用了流 线型梭把式浮沉子,并使浮沉子升降区观察范围设在液柱中部,获得了较大的浮沉子升降速度与温度间直线性关系的范围。温度范围±0.33°C。速度范围±0.26毫米/秒。 2.测定结果表明:山东苦卤(28°Bé)密度较标准海水高出4.208γ相当于0.0037克分子％D_2O,重水含量较标准海水高24.03％。广东苦卤(29.7°Bé)密度较标准海水高出6.250γ,相当于0.0058克分子％D_2O,重水含量较标准海水高37.66％。 3.比较广东与山东二份样品测定结果,可以看出广东苦卤中重水含量有更多富集(虽然二者°Bé不尽相同,但密度差仍旧是显著的)。这与湛江、青岛两地的纬度差异(湛江——北纬21°,青岛——北纬36°)而引起的蒸发差异所应导致的预期结果是一致的。 4.样品水与标准水的密度差证明海水经自然蒸发析出氯化钠以后,重水含量获得了预期的富集效果。高浓度的苦卤可以作为提取浓重水的原料,为海水卤水综合利用提供了有价值的资料。 本文在实验过程中曾? The feeding habit,age and growth,and the propagation of the mud carp,Cir-rhinus molitorella,has been studied.And suggestions concerning its culture have beenmade accordingly.The mud carp feeds mainly on phytoplankton.When water temperature is bet-ween 16.4℃ and 29.4℃,the fish have a strong appetite,above and below this tem-perature feeding declines.Most fish cease to eat at a dissoved oxygen level of 0.24—0.65 mg/l,and when the oxygen level exceeds 0.99 mg/l the feeding of the mudcarp becomes quite active.The... The feeding habit,age and growth,and the propagation of the mud carp,Cir-rhinus molitorella,has been studied.And suggestions concerning its culture have beenmade accordingly.The mud carp feeds mainly on phytoplankton.When water temperature is bet-ween 16.4℃ and 29.4℃,the fish have a strong appetite,above and below this tem-perature feeding declines.Most fish cease to eat at a dissoved oxygen level of 0.24—0.65 mg/l,and when the oxygen level exceeds 0.99 mg/l the feeding of the mudcarp becomes quite active.The age of the fish was determined according to the disposition of the circuli ofthe scales.New circuli are formed between March and November,which denote thegrowing period of the fish.Among the fish examined,the largest female had a body-length of 595 mm,wei-ghing 4,100 g,10the largest male's body-length was 580 mm,weighing3,850 g,9 years of age.The correlation between body-length and body-weight is calculated for 261 fishfrom Yu-kiang River and for 382 pond-reared fish.Pearl-organs appear on the head and pectoral fins of the mature male duringApril through July.The females have none.The sex ratio of the 1,119 fish examined was about 1∶1.But when the fish weredivided into different size-groups,it was found that the proportion of the maledecreased as the size increased.The seasonal changes of the ovaries and the testes of the pond-reared mud carpwere studied.And the gonadal development of the pond-reared mud carp was com-pared with that of the mud carp caught from Yu-kiang River.It is found that the mud carp is capable of natural spawning in the Da-wang-tan Reservoir.During the years of ,the spawning grounds of the mud carp inYu-kiang River were investigated.The ecological conditions for spawning include:water level rises rapidly (0.37—2.12m within 24 hours),the velocity of currentincreases markedly,and the water temperature ranges between 25.9 and 29.6℃.The minimum size for sexually mature individuals are as follows:fish from Yu-kiang River,female 273 mm,525 g,male 275 mm,415pond reared fish,female247 mm,366 g,male 235 mm,291g.According to the data obtained from 28 fish,the fecundity for river fish is 84 eggs/g body-weight,and 139 eggs/g body-weight for pond reared fish.The embryonic development is divided into 4 stages and 26 periods while thepost-embryonic development,8 stages.Induced spawning has been successfully carried out from early-May until mid-June,with the water temperature from 22℃ to 29℃.Spawning takes place 4.5 to6 hours after the injection of pituitaries or gonadotropins.According to the experiences of the fish-farmers,in ponds for poly-culture ofvarious fish,a stocking rate of 1,000 fingerlings of the mud carp to each mou(666m~2) is suitable,the number of the silver carp (Hypophthalmichthys molitrix)fingerlings stocked should be kept at one-third that of the mud carp.In pondswhere the mud carp is intended to be the main object,a rate of 1,500—2,000 permou is desirable.本文对鲮鱼的食性、年龄、生长和繁殖进行了研究,并对渔业生产提出了建议。鲮鱼以浮游植物为主要食料。在水温14.6—29.4℃时食欲旺盛。当水中溶氧量0.24—0.65毫克/升时,绝大部分个体停止摄食,而溶氧量在0.99毫克/升以上时,摄食强度很大。见到的最大个体:雌鱼体长595毫米,体重4,100克,10龄;雄鱼体长580毫米,体重3,850克,9龄。鲮鱼能在大王滩水库中自然繁殖。鲮鱼人工繁殖季节以5月初至6月中旬较适宜;催产时水温以22—29℃为好,注射催产剂的效应时间一般为4.5—6小时。见到的性成熟最小个体:郁江鲮鱼雌体长273毫米,体重525克,雄体长275毫米,体重415克;池养鲮鱼雌体长247毫米,体重366克,雄体长235毫米,体重291克。根据群众经验,一般池塘中鲮鱼每亩放养1,000尾,鲮与鲢的放养比例以3∶1较好,以鲮鱼为主体的池塘则每亩放养1,500—2,000尾较好。 The famous blunt-snout bream (Megalobrama amblycephala Yih) was introducedinto the Hwamahu Lake first in 1960.It has been spawning regularly in the Lakesince then.But the survival rate of its fry seemed to be extremely low,and annualcatch of this fish soon dwindled to insignificance.Renewed effort to resume its yieldhas been made through mass release of fingerlings (8—11 cm in total length) intothe Lake year after year since 1972,with the result that its annual catch rapidly roseand hit a record of 20 tons in... The famous blunt-snout bream (Megalobrama amblycephala Yih) was introducedinto the Hwamahu Lake first in 1960.It has been spawning regularly in the Lakesince then.But the survival rate of its fry seemed to be extremely low,and annualcatch of this fish soon dwindled to insignificance.Renewed effort to resume its yieldhas been made through mass release of fingerlings (8—11 cm in total length) intothe Lake year after year since 1972,with the result that its annual catch rapidly roseand hit a record of 20 tons in 1974,comprising 5 per cent of the gross yield of allfish.Method of induced spawning,hatchery management and growth rate of this fishin the Lake are given,and plans for further raising its production are suggested inthis paper.本文介绍了花马湖养殖场在增殖团头鲂(Megalobrama amblycephala Yih)方面的经验。团头鲂在人工饲养的条件下,通过鲤鱼脑垂体催情,能人为地控制产卵。脑垂体的剂量为雌鱼6—8毫克/公斤,雄鱼5毫克/公斤或不注射。花马湖面积17,000亩,水草茂盛。引种后的团头鲂,在湖里已有其产卵场和越冬场所。团头鲂在湖中生长良好;春放8—10厘米的鱼种,冬季可长到200克(150—300克),第二年长到450克(300—650克)。在人工放养的年份,年产量在总渔获量中已往一般占2—3%,1974年达5%。投放大量大规格鱼种,才能使团头鲂在湖中稳产高产。1973年投放8.3厘米以上的团头鲂春片鱼种20万尾,当年产量为2万余斤。1974年投放春片鱼种30万尾,产量达4万余斤;仅夏、秋季敞水除野“卡子”业司,每天每船可捕获150—250克的团头鲂8—10市斤,占船产量的40%左右,是历年罕见的现象。&nbsp&&&&&相关查询
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