2011, 18(6):0.
摘要:在促进幼体向成体转变过程中起着极其重要的作用。为探讨), , , (时表达量呈现下降的趋势。实时荧光定量数据表明表达量达到最高。靶基因预测发现,
2011, 18(6):0.
摘要:insulin-like growth factor I, IGF-I及其受体表达特征的分析对于阐述PCR(且各基因的表达在胚胎发育的不同阶段具有明显的发育性变化。基因在受精卵、卵裂及囊胚期的早期胚胎发育中有相对较少的转录本且在神经胚、晶体出现、心跳和出膜前各阶段均有高量的表达但合子基因的表达在后期胚胎形成中却相对降低
2011, 18(6):0.
2011, 18(6):0.
摘要:。牙鲆酵母双杂交文库的构建成功为鲆蝶类免疫机理的研究
2011, 18(6):0.
摘要:(response surface methodology, RSM), (0~16)仔鱼生长和存活的联合影响。结果表明温度与盐度的一次与二次效应对特定生长率和存活率均有显著影响<0.05生长与存活均呈先上升后下降的变化。温度与盐度间存在互作效应<0.05仔鱼的特定生长率与存活率在盐度为随着温度上升时较高生长与存活率较高。所考察因子与生长和存活率间的二次多项回归方程的决定系数分别达到0.982 1 (), 个因子的最佳组合为和盐度在此最佳因子组合下罗非鱼仔鱼的特定生长率与存活率达到最优。建议罗非鱼仔鱼在本研究中得到的最优因子组合下进行培育
2011, 18(6):0.
摘要:个个体进行了遗传多样性分析。结果显示个等位基因平均有效等位基因数为0.696 7; 个群体的期望杂合度由高到低依次为HC(0.758 8)ZS(0.728 3), LZ; , , HC与最后南北两大群体聚为一支。分析群体间的<0.15)
2011, 18(6):0.
摘要:2010分析了黄海北部鱼类群落的摄食生态及其变化。结果表明种重要种类广食性鱼类减少月总摄食量分别为细长脚
2011, 18(6):0.
摘要:文库。经检验平均插入片段大于。对GenBank, , , 含有全长编码区序列的克隆共有。采用获得一个含的序列特征。本研究完成鲢肝和肾较高质量的旨在为今后开展鲢功能基因研究奠定基础。
2011, 18(6):0.
摘要:21℃研究了其皮肤黏液中特异性抗体水平的变化ELISA后第值上升最快(OD无显著差异(Ig), SDS-PAGE蛋白条带。确定为牙鲆皮肤黏液牙鲆在最适生活温度下
2011, 18(6):0.
摘要:)
2011, 18(6):0.
摘要:In many regions, the marine environment is contaminated with cadmium (Cd), a toxic but widely used industry material. Because shellfish live in the benthos and have a relatively fixed location, their health is largely dependant on the quality of the surrounding environment. A number of researchers have reported finding heavy metals in shellfish samples. Given the importance of shellfish in China, we measured levels of Cd contamination in 5 shellfish species: Meretrix meretrix collected from the coast of the South China Sea in 2007 and 2009. We measured the Cd content and evaluated the dietary exposure to Cd from shellfish using the point estimate method. We found significant differences in Cd content among shellfish species. Mean concentrations were 1.80, 0.38, 0.26, 0.15, and 0.12 mg·kg C. gigas,, -, respectively). The distribution and seasonal variation in Cd content was correlated with marine environmental factors such as dissolved oxygen, salinity, and temperature. The Cd concentration was higher than the limit for deleterious material by non-environmental pollution of aquatic products in . Conversely, Cd levels were below this limit in the remaining species. In comparison, the levels of Cd were lower than foreign limits for all species. A comparison with survey data collected from other coastal areas in past years suggests theBased on our risk assessment, dietary exposure to Cd from consumption of the Joint Expert Committee on Food Additives (JECFA), suggesting there is a risk to human health. Conversely, the other 4 shellfish species likely pose no risk as the Cd levels were lower than the values recommended by JECFA. The ratio of Cd than the suggested critical value of <0.015 proposed by some authors as effectively providing protection from Cd induced health impacts. C. rivularis likely does not pose a risk to human health.