作　　者： ; ; ; ;

机构地区： 广东海洋大学

出　　处： 《广东海洋大学学报》 2010年第1期50-54,共5页

摘　　要： 以室内育苗池或玻璃缸养殖方式,研究了不同培育密度、换水量和倒池培育对珠母贝浮游幼虫生长发育和存活的影响。结果表明:当培育密度为0.8、1.2只/mL,直线铰合期时间分别为7.00、7.40d,日均生长为5.16、4.87μm,壳顶期时间分别为10.76d和10.77d,眼点期密度为0.58只·mL-1和0.60只·mL-1,差异不显著;日换水量分别为40%、60%、80%,直线铰合期时间、壳顶期时间、日均生长及眼点期密度差异不显著,日换水量40%能满足幼虫的生长和存活;壳顶初期进行倒池培育,能促进浮游幼虫的生长发育和提高其存活率。 Experiments were done to investigate the development, growth and survival under the conditions of different density, water changing rate and changing ponds conditions in the glass tanks and indoor concrete ponds. The results showed that： the development time was 7.00 d in the D-stage larvae with density 0.8 shellsomL-1, 7.40 d with density of 1.2 shellsomLl, daily growth rate 5.16 μm·d^-1 and 4.87μm.d^-1 respectively, early umbo larvae could develop into eyespot stage for 10.76 d with density 0.8 shellsomL1, 10.77 d with density of 1.2 shells·mL^-1,the density of eyespot larvae were 0.58 shells·mL^-1 and 0.60 shells.ml^-1, respectively, showing no significant differences, the development time of D-stage larvae and umbo larvae ,daily growth rate, eyespot stage density of larvae showed no significant difference under different daily water change rate of 40%, 60% and 80%. Daily water changing rate 40% is fit for the growth and survival of larvae. Changing ponds when the larvae developed into umbo early stage remarkably increased the growth, development and survival of planktonic larvae.

关 键 词： 珠母贝 浮游幼虫 变态 存活

领　　域： [农业科学] [农业科学]