查询词典 Swordtail

The acute and joint toxicity test to swordtail fish, Xiphophorus helleri was conducted to evaluate the impact of mercury and selenium on fishes.

用重金属汞(Hg+2)和硒(Se+4)对剑尾鱼进行急性毒性和联合毒性的实验。其目的在于评价水环境中Hg+2和Se+4对鱼类的影响，为制订渔业水质标准提供参考数据。

The HSP70 gene expression was determined in hepatopancreas, spleen, heart and head kidney in green swordtail Xiphophorus helleri challenged by Vibrio alginolyticus 0, 2, 5, 8 and 11 days after administration using RT-PCR. Results showed that tile gene expression of the HSP70 was of tissue specific.

用溶藻弧菌Vibrio alginolyticus感染剑尾鱼Xiphophorus helleri，取感染后第0、2、5、8、11 d的活鱼及感染后第2d濒死鱼，采用半定量RT-PCR方法分别检测HSP70基因在肝胰脏、脾脏、头肾和心脏组织中的表达。

Walling and his colleagues investigated green swordtail fish , a Central American species popular in the tropical aquarium market .

沃林和他的同事们研究了青剑鱼，这是中美洲的一个鱼种，在热带观赏鱼市场上很受欢迎。

This paper is an attempt to analyze the nutritional requirements and current diets, in order to promote further study of nutritional requirements and establishment of nutritional standard for laboratory zebrafish and swordtail.

本文就斑马鱼、剑尾鱼的营养需求及饲料现状进行了分析，以期能为斑马鱼、剑尾鱼营养需求方面更深入的研究及营养标准的制定有所帮助。

Polyclonal antibodies against the purified Lv from swordtail fish were produced in the mice.

用纯化的剑尾鱼Lv免疫大白鼠获得鼠源多克隆抗血清。

However, different types of tropical fish, the water temperature requirements are different, such as the guppy, swordtail can put up with around 10 ℃ low temperature, Discus fish, tiger fish, will be below 18 ℃, when the death.

但不同种类的热带鱼，对水温的要求是有差异的，如孔雀鱼、剑尾鱼可以忍耐10℃左右的低温，七彩神仙鱼、虎皮鱼等在低于18℃时便会死亡。

The results also showed that swordtail fish was more sensitive to these pollutant, and the result with swordtail fish had better reproduplication, so swordtail fish was a kind of good laboratory animals for aquatic toxic test.

在3个营养级别的受试生物中，剑尾鱼对上述毒物具有较好的敏感性，结果稳定，重现性好，说明剑尾鱼是一种优良的水生毒性试验材料。

The acute toxicity of three kinds of typical chemicals to alga、cladoceza and swordtail fishwere studied, and safety assessment was also made.

采用水体中3个营养级别的水生生物测试卤代酚类、硝基苯类、烷基苯类典型有毒有害化学品对水生生物的急性毒性，同时对上述物质对水生生物的安全性进行初步评估，并预测了上述物质对水生生物的环境安全浓度。

It's the look of love —when female green swordtail fish see attractive adult males, they mature faster sexually, researchers now find.

研究人员目前发现，雌性青剑鱼看到富有魅力的成年雄性时，会出现性早熟，这看起来象是爱的力量所致。

Results showed LC_(50) of divalent mercury to swordtail fish were 0.84, 1.35, 1.71mg/L in 24h, 48h and 96h respectively, while LC_(50) of tetravalent selenium to swordtail fish were 6.64, 12.59, 17.91mg/L respectively.

结果表明：Hg+2对剑尾鱼的 24、48、96 h的 LC50分别为 1.71、1.35、0.84mg/L；Se+4对剑尾鱼24、48、96 h的Lc50分别为17.91、12.59、6.64 mg/L；在浓度和毒性比都为1∶1的条件下，24 h都表现联合作用，而48 h、96 h则为拮抗作用。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。