|
|
| |
|
|
| 本文已被：浏览 1776次 下载 1147次 |
码上扫一扫！ |
|
|
| 镧对黄姑鱼幼鱼促生长作用和成活率影响的研究 |
|
陈 超1,2, 陈建国1,2, 张廷廷1,2, 邵彦翔1,3, 谭鲁玉1,4, 孙曙光1, 张春禄1,2, 张梦淇1,2, 王孝山5, 徐加元5
|
|
1.中国水产科学研究院 黄海水产研究所, 农业部海洋渔业可持续发展重点实验室, 青岛市海水鱼类种子工程与生物技术重点实验室;2.上海海洋大学 水产与生命学院;3.大连海洋大学 水产与生命学院;4.中国海洋大学 海洋生命学院;5.中国水产科学研究院 东海水产研究所
|
|
| 摘要: |
| 为探究镧对黄姑鱼(Nibea albiflora)幼鱼的促生长作用和成活率的影响, 本研究设7组不同镧质量浓度处理组, 采用不同方程对不同镧质量浓度组的体质量生长拟合。实验结果表明, 不同镧质量浓度处理组黄姑鱼幼鱼的生长速度差异显著(P<0.05)。采用线性方程: 1.8 mg/L处理组的体质量生长系数最大, 为0.011 2, 而对照组(0 mg/L)的体质量生长系数最小, 为0.009 9; 采用多项式方程: 1.8 mg/L组全长生长系数的绝对值最大, 为3.26, 而对照组(0 mg/L)的全长生长系数的绝对值最小, 为1.17。镧对体质量增大率、全长增长率和特定生长率、死亡率均有显著的影响(P<0.05), 用多项式方程分别对上述生长参数与镧质量浓度(C)之间的相关关系拟合得到, 体质量增大率=162.93+42.79C+(–11.62)C2(R2=0.95), 全长增长率=38.49+21.54C+(–7.27)C2(R2=0.90), 特定生长率=1.08+0.16C+(–0.04)C2(R2=0.93), 死亡率= 62.91+(–22.88)C+7.19C2(R2=0.54)。根据方程, 得到最适体质量增大、最适全长增长、最适特定生长、最低死亡率的镧质量浓度分别为1.84、1.48、2 和1.59 mg/L。证实, 镧可促进黄姑鱼幼鱼的生长及提高成活率, 1.48～2 mg/L为黄姑鱼幼鱼的最适生长的镧质量浓度范围。 |
| 关键词: 黄姑鱼幼鱼 镧(La3+) 体质量增大率 全长增长率 特定生长率 平均死亡率 |
| DOI：10.11759/hykx20170106001 |
| 分类号: |
| 基金项目:国际合作项目(2012FDA30360) |
|
| Effect of Lanthanum (La3+) on growth and survival rate of Nibea albiflora larvae |
|
CHEN Chao,CHEN Jian-guo,ZHANG Ting-ting,SHAO Yan-xiang,TAN Lu-yu,SUN Shu-guang,ZHANG Chun-lu,ZHANG Meng-qi,WANG Xiao-shan,XU Jia-yuan
|
| Abstract: |
| To investigate the role of La3+ in the growth and survival rate of Nibea albiflora larvae, we designed seven different concentration treatment groups of La3+. Results showed that La3+ has a significant effect on the larval growth (P < 0.05). Statistical analysis revealed correlations between body weight (W) and culture days (d) in the linear equation, wherein the 1.8 mg/L treatment group showed the maximum body weight coefficient of 0.0112, whereas the control group (0 mg/L) showed the minimum coefficient of 0.009 9. Correlations between body length (L) and culture days (d) could be described by the polynomial equation, in which the 1.8 mg/L treatment group showed the maximum length growth coefficient of 3.26, whereas the control group (0 mg/L) showed the minimum length growth coefficient of 1.17. La3+(C) had a significant influence on the body weight growth rate, body length growth rate, specific growth rate, and average mortality rate (P < 0.05). The polynomial equations with the correlations are as follows: body weight growth rate = 162.93 + 42.79C + (–11.62) C2(R2 = 0.95), body length growth rate = 38.49 + 21.54C + (–7.27) C2(R2 = 0.90), specific growth rate = 1.08 + 0.16C + (–0.04) C2(R2 = 0.93), and average mortality rate = 62.91 + (–22.88)C + 7.19 C2(R2 = 0.54). According to the regression equation, the optimal weight growth, the optimum length growth, the optimal specific growth, and the lowest mortality were observed at La3+ concentrations of 1.84, 1.48, 2 and 1.59 mg/L, respectively. This study confirmed that La3+ has a growth-promoting action and improves the survival rate of N. albiflora, and the optimum concentration range is 1.48–2 mg/L. |
| Key words: Juvenile Nibea albiflora La3+ body weight growth rate body length growth rate specific growth rate average mortality rate |
|
|
|
|
|
|