| 亚铁离子对赤潮异弯藻种群消长和部分生化特性的影响 |
| |
| 引用本文： | 周成旭,严小军,陈安敏.亚铁离子对赤潮异弯藻种群消长和部分生化特性的影响[J].海洋科学,2008,32(1):10-13. |
| |
| 作者姓名： | 周成旭 严小军 陈安敏 |
| |
| 作者单位： | 宁波大学,海洋生物工程重点实验室,浙江,宁波,315211 |
| |
| 基金项目： | 国家自然科学基金项目( 20472040) ; 教育部高等学校科技创新工程重大项目培育资金项目( 705028) ; 浙江省自然科学基金资助项目( Y504083) |
| |
| 摘 要： | 报道了KCl对方斑东风螺(Babylonia aerolato Link)浮游幼虫变态的诱导作用.结果表明,在水体200 mL,幼虫20只,KCl连续作用12 h的条件下,当KCl浓度不超过8×10-3 mol/L且幼虫日龄小于12 d时,诱导变态率为0～15%,诱导效果不稳定;当KCl浓度达到11×10-3 mol/L且幼虫日龄达到15 d时,浮游幼虫变态率超过95%.在水体850 L,幼虫2.0×105～2.5×105只,KCl连续作用9 h的条件下,KCl浓度为17×10-3mol/L,日龄15 d的幼虫变态率达90%.浮游幼虫日龄越大,KCl添加浓度越高,作用时间越长,KCl诱导变态作用越明显.KCl对方斑东风螺幼虫有毒性作用,日龄越小,浓度越大,作用时间越长,毒性越大.日龄12 d的浮游幼虫,KCl添加浓度11×10-3mol/L作用20 h诱导变态的稚螺,未发现其生长和存活受到KCl的不良影响.综合本实验的结果,KCl诱导变态较为安全有效的条件是:浮游幼虫日龄不小于15 d,添加浓度11×10-3～14×10-3 mol/L,作用时间不超过12 h.
|
| 关 键 词： | 方斑东风螺(Babylonia aerolato) 诱导变态 氯化钾 |
| 文章编号： | 1000-3096（2008）01-0006-04 |
| 收稿时间： | 2005-02-08 |
| 修稿时间： | 2005-05-30 |
Population dynamics and some biochemical changes in Heterosigma akashiwo affected by ferrous ion |
| |
| ZHOU Cheng-xu,YAN Xiao-jun,CHEN An-min.Population dynamics and some biochemical changes in Heterosigma akashiwo affected by ferrous ion[J].Marine Sciences,2008,32(1):10-13. |
| |
| Authors: | ZHOU Cheng-xu YAN Xiao-jun CHEN An-min |
| |
| Abstract: | The effects of ferrous ion on ichthyotoxic red tide organism Heterosigma akashiwo were studied. Two ferrous ion forms, Fe(NH4)2(SO4)(Fe1) and FeSO4(Fe2), were added to the culture under three different concentrations(high group, 150 nmol/L; low group, 50 nmol/L, naught group, 0 nmol/L), changes of population, polysaccharide, chlorophyll a and c and nitrate level in culture medium were investigated. The results indicated that ferrous concentration affects the population crash, a ferrous deficient group(Fe0) can maintain a longer life and a higher density than the higher iron groups during the population crash. The cellular polysaccharide content in Fe1 group is significantly higher than that in Fe2 group both at stationary phase and crash phase. From stationary phase to crash phase, the polysaccharide content in each group increased, the highest increase appeared in Fe2. Increase of ferrous ion is helpful to the accumulation of chlorophylls. The different formations of ferrous ion affect the accumulations of polysaccharide and chlorophylls but have no obvious effects on the population growth rate and nitrate level. |
| |
| Keywords: | Babylonia aerolato induced metamorphosis KCl |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《海洋科学》浏览原始摘要信息 |
| 点击此处可从《海洋科学》下载免费的PDF全文 |
|
