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剑尾鱼的英文

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"剑尾鱼"怎么读用"剑尾鱼"造句

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  • swordtail; xiphophorus

例句与用法

  • The sleek swordtail is an agile swimmer and needs plenty of room
    圆滑的剑尾鱼是一个敏捷的泳者并且需要充足的活动空间。
  • Females may not be physiologically able to reproduce ; in particular , older females may be infertile
    剑尾鱼可能不能生育,特别要指出的是,老年的母剑尾鱼可能会绝育。
  • It was realized as early as the 1920 ' s that one could make hybrids between the different species
    剑尾鱼是一种淡水鱼,它的基因包含23种(我不清楚这23种是否指的是染色体) 。
  • Xiphophorus can store sperm for several months . our records indicate that storage can be up to 9 months and possibly longer
    剑尾鱼可以储存几个月的精子。我们的记录显示可以储存9个月甚至更长!
  • Ai can be used in non - hybrid matings when the situation dictates , such as when a mating pair has not produced offspring after several months of co - habitation
    在某些时候人工受精技术会使用于不同类型的纯种剑尾鱼之间的杂交,例如一对杂交种鱼经过了几个月的同缸生活后还是没有生产后代。
  • This paper summarized the main endpoints and special sensitive indices of fish in the study of endocrine disruption , and introduced the main biological characteristics of several fish species such as chinese rare minnow , zebrafish , medaka , guppy , swordtail fish and fathead minnow , and their use in screening , detecting and assessment for endocrine disruptors
    本文主要综述了利用鱼类进行内分泌干扰研究的主要测试终点和敏感效应指标;重点介绍了稀有鲍鲫、斑马鱼、日本青? 、孔雀鱼、剑尾鱼、黑头软口鲦等鱼类的主要生物学特性,以及利用它们进行内分泌干扰物的筛选与测试方面的研究成果。
  • On the basis of the investigation of the content and distribution of heavy metals in sediments and benthic organisms from the sewage stream in guangzhou city , the antagonistic effect of selenium on the harm of mercury ( hg2 + ) to the tissues in swordtail fish ( xiphophorus helleri ) , the 22nd offspring purely cultivated by pearl river fishery research institute , were measured by physiological and biochemical indexes and observation of electron microscopy
    本研究中首先调查了广州市河涌沉积物及底栖生物体内重金属含量及分布,并以珠江水产研究所培育的水生实验动物?剑尾鱼为实验材料,利用环境生物技术,电镜观察等技术方法研究了重金属?汞对剑尾鱼组织的毒害及机体必需微量元素硒对其毒害的拮抗性影响。
  • Compared to the single hg2 + treated , se4 + + hg2 + the mixed exposure could restrain the fall of the activity of t ? aoc , sod and gsh ? px , reducing the level of lipid peroxidation , and alleviating membrane damage , represented with the heighten na + - k + - atpase activity and reduced mda concentration , resulting in the increased resistance to hg2 + damage . however , se4 + were incapable of preventing from the damage of hg2 + ultimately , along with the exposure period , regardless of the fact that the obvious enhancement of t - aoc and atpase activity
    混合处理后,与单一汞处理相比, se ~ ( 4 + )在一定程度上能有效抑制汞胁迫引起的t ? aoc , sod , gsh ? px的降低,降低膜脂质过氧化水平,减轻了对膜的硒对汞致剑尾鱼抗氧化系统的毒害和生理损伤的拮抗作用损伤,表现为随一k + / atpase活力升高,而mda含量降低,提高了机体对hg叶毒害的抗性;但随着染毒时间延长,硒不能最终阻止毒害的加深。
  • The main study in this paper included as follows : the content and distribution of heavy metals in sediments and benthic organisms from the sewage stream in guangzhou city ; the acute toxicity and joint toxicity of mercury and selenium to swordtail fish ( xiphophorus helleri ) ; the damage of mercury to the indexes of antioxidant system in the gills and livers in swordtail ( including the measurement of the activities of total antioxidative capacity [ t ~ aoc ] , superoxide dismutase [ sod ] , glutathione peroxidase [ gsh - px ] and the concentration of malondiald - ehyde [ mda ] ) and the relief effects of selenium on it , as well as the physiological damage of mercury on the tissues , namely : the antagonistic effect of na + - k + ~ atpase activity on the tissues between selenite and mercury , and the ultrastructural damage under the exposure of mercury
    研究内容主要有:广州市河涌沉积物及底栖生物体内重金属含量及评价;汞和硒对剑尾鱼的急性毒性和联合毒性及安全浓度的评价;汞对剑尾鱼鳃和肝脏中抗氧化系统的毒性,包括对总抗氧化能力、超氧化物歧化酶、谷胱甘肽过氧化物酶活力及丙二醛含量的测定及硒对其保护作用;汞对剑尾鱼组织生理毒性即:汞对na ~ + - k ~ + atpase活力的影响及硒的保护作用和汞和对剑尾鱼组织超微结构的损伤等。以高氯酸?硝酸消化法和火焰原子吸收分光光度法测定了广州市河涌沉积物和底栖生物中重金属含量。
用"剑尾鱼"造句  

其他语种

百科解释

剑尾鱼,为辐鳍鱼纲?形目花?科的其中一种,分布于中美洲墨西哥Nantla至洪都拉斯西北部的淡水流域,并引进到许多国家,体长可达14厘米,栖息在水流快速、植被生长的溪流或湖泊、池塘,属肉食性,以甲壳类、蠕虫、昆虫等为食,适应能力强,性情温和,不易生病,可以和其他无攻击性的热带鱼混养。但剑尾鱼喜欢跳跃,因此鱼缸要加盖。
详细百科解释
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