2012, 19(5):729-740.
摘要:的作用“GT-AG”。密码子的偏好性与缺刻缘绿藻其他基因保持一致。推测FAD3基因编码蛋白序列所构建的Δ12与而具有较近的亲缘关系。PCR(quantitative real-time PCR, Q-RT-PCR)FAD结果表明这而氮恢复培养后迅速并显著地下降到氮饥饿胁迫前的水平。结合已知脂肪酸成分在此过程中的变化个基因对缺刻缘绿藻
2012, 19(5):755-766.
摘要:采用Siniperca chuatsi)胃泌素(cholecystokinin, CCK)GAS581 bp, 5′; CCK2, 在肠和幽门垂也有较高表达而,
2012, 19(5):767-774.
摘要:促进凡纳滨对虾CYP4V18羟基蜕皮甾酮, 的溶液浸泡处理CYP4V18real-time PCR, 1 545 bp, , ; CYP4V18分别是脑、、CYP4V18187.7%, KK-42、。结果表明CYP4V1820EKK-42
2012, 19(5):790-798.
摘要:仔稚鱼发育进行了较详细的观察初孵仔鱼平均全长仔鱼以卵黄囊作为营养来源日龄为晚期仔鱼阶段23, 身体各部分比例、体形及体色基本上与成鱼一致为止。西伯利亚鲟主要感觉器官的发育特征与其他硬骨鱼类相比表现出一定的差异,
2012, 19(5):799-805.
摘要:Acipenser schrenckii), <0.05), 其饵料系数<0.05), 摄食率<0.05), 、、27而温度对中肠和后肠蛋白酶活性则无显著性影响P>0.05)在此温度范围内施氏鲟幼鱼可获得最大生长率和存活率。
张美琴 , , 季华曼 , 杨洪生 , , 孟勇 , , 王静 , , 吴光红 ,
2012, 19(5):900-905.
摘要:We measured the total selenium content in aquatic product samples after oxidation of organic selenium into inorganic selenium using a nitric acid, perhydrol mixed system. Simultaneously, we measuredinorganic selenium content by HG-AFS following extraction of the sample in a HCL(50%) solution and digestion of the water phase in HNO3 and H2O2. Using these data we calculated the organic selenium content of the samples. Under optimal conditions, the detection limit of selenium by this method was 7.1 ng/mL and the linear range was between 0–20 μg/L. The recovery rate of total selenium was 93.88%–107.65% and the RSD was 0.82%–4.97%. Similarly, the recovery rate of organic selenium was 82.88%–90.10% and the RSD was 2.33%–7.73%. In summary, this method has a wide linear dynamic range and good precision and accuracy, so is suitable for the determination of organic and inorganic selenium in aquatic products.
