摘要
为了优化筛选中国北方地区底栖硅藻的生产性培养方法,参照现有的培养方式,采用3种培养措施进行底栖硅藻的生产性培养:措施Ⅰ:光照度2500～3000lx,翻筐1次/24h;措施Ⅱ:光照度2500～3000lx,翻筐1次/72h;措施Ⅲ:光照度1500～2000lx,翻筐1次/72h。结果表明:培养措施Ⅰ和Ⅲ获得的底栖硅藻种类组成(大型舟型藻、小型舟型藻、楔形藻、菱形藻、直链藻、卵形藻的密度百分比分别为11.56±4.64,78.27±9.63,0.823±0.25,2.57±1.06,0.01±0.01,6.78±1.34和0.15±0.03,79.71±12.72,0.23±0.09,0.64±0.12,0.01±0.01,19.262±6.64)优于培养措施Ⅱ(大型舟型藻、小型舟型藻、楔形藻、菱形藻、直链藻、卵形藻的密度百分比依次为23.56±10.47,38.47±9.85,22.51±9.86,10.24±2.86,5.22±1.68,0.007±0.002),但培养措施Ⅲ所获得底栖硅藻总密度显著较低。说明采用较强的光照度(针对小型舟型藻类而言)结合每日翻筐的培养措施既能保证较优质的底栖硅藻种类组成,又提高了生长速度,迎合了水产经济动物苗种生产培养中对底栖硅藻的大量需求。
In order to optimize the productive training methods of benthic diatoms in northern China and taking into account the existing culture modes.Benthic diatoms were productive culture using three kinds of measures （Ⅰ：Illuminance 2500～3000 lx,over the baskets/24h;Ⅱ：Illuminance 2 500～3 000lx,over the baskets/72h;Ⅲ：Illuminance 1500～2000 lx,over the baskets/72h）.The results show that：Species composition of benthic diatoms （per cent in the density of large species of Naviculaceae,small species of Naviculaceae,species of Diatomaceae,species of Nitzschiaceae,species of Melosira and species of Cocconeis were 11.56 ± 4.64,78.27±9.63,0.823±0.25,2.57±1.06,0.01±0.01,6.78±1.34 and 0.15±0.03,79.71±12.72,0.23± 0.09,0.64±0.12,0.01±0.01,19.262±6.64 respectively） cultured using measures Ⅰ and Ⅲ than develop measures Ⅱ （per cent in the density of large species of Naviculaceae,small species of Naviculaceae,species of Diatomaceae,species of Nitzschiaceae,species of Melosira and species of Cocconeis were 23.56 ± 10.47,38.47 ± 9.85,22.51 ± 9.86,10.24 ± 2.86,5.22 ± 1.68,0.007 ± 0.002）,but total density of benthic diatoms cultured using measures Ⅲ were significantly lower.This study indicated that stronger illuminance （Optimum illumination theoretic of small species of Naviculaceae is 1000-1500 lx） combined with daily turn baskets both ensure more high-quality and also enhance the growth rate of benthic diatom,so as meeting need of seed for more quantity of benthic diatoms of aquatic economic animals.
出处
《中国农学通报》
CSCD
北大核心
2010年第15期402-406,共5页
Chinese Agricultural Science Bulletin
基金
国家高技术发展计划"海参养殖池塘环境控制与生境修复技术研究"(2006AA10Z409)
关键词
底栖硅藻
生产性培养
种类组成
benthic diatom
productive culture
species composition
