作　　者： ; ; ; ;

机构地区： 中山大学生命科学学院

出　　处： 《水产学报》 2006年第4期489-494,共6页

摘　　要： 通过池塘陆基围隔实验，研究了凡纳滨对虾在最适水温、溶氧、pH及低盐度（2～6）养殖环境的生长特性及规律。实验结果，低盐度养殖健康对虾体长和体重平均生长率分别为1．398mm·d^-1和0．169g·d^-1，对虾前期体长呈线性生长，中后期体重呈加速增长。非线性拟合结果，对虾体长生长为二次曲线，符合Quadratic模型，体重增长为S型曲线，符合Boltzmann模型，生长观测值与模型拟合相关系数R^2均达到0．99；凡纳滨对虾低盐度养殖典型体长和体重生长模型为L=7．843＋2．297t-0．0105t^2和形=16．541＋（-0．621—16．541）／（1＋e^（t-54.809）/15.456）。低盐度养殖，对虾体长与体重呈立方关系，符合幂指数模型W=aL^b，a值范围4．9～9．0×10^-6，b值范围2．9495～3．0716，相关系数R^2在0．99以上，典型幂指数模型为形：4．9×10^-6L^3.0716。 Litopenaeus vannamei low salinity stocking was playing an important role and developed rapidly in southern parts and coastal areas of China in recent years. The stocking salinity level decreased gradually following the development of theory and techniques, the general level is at 1 - 8 ppt at present, and the characteristics of L. vannamei growth at the low salinity level had not yet been reported. The studies of the characteristics of L. vannamei growth at low salinity aim to provide more theory bases for desalination stocking. Experimental enclosures（1 × b× d： 5 m×5 m× 1.6 m） were set up in the shrimp pond, 2000 healthy shrimp larvae with body length（BL） 1 cm were reared for 85 days, the population density was 80 ind·m^-2, water salinity was 6 ppt at early time, 3 - 4 ppt in the middle term and 2 ppt in final term, with desalination naturaUy and no water exchange in the course of experiment. The average of water temperature was 29.2 - 31.6 0℃, dissolved oxygen was 3.9 - 5.8 mg· L^- 1, value of pH was 7.8 - 8.8 and transparency was 20 cm throughout the experimental period. Data from five enclosures were analyzed and used in this paper. The results show that the average of shrimp body length growth rate （BLGR） is 1.398 mm·d^-1（ range at 1.353- 1.435 mm·d^-1） and that of the body weight growth rate （BWGR） is 0.169 g·d^-1 （ the range at 0. 156 - 0. 176 g·d^-1） , the mean value of final BL and BW is 118.83 mm and 14.37 g, respectively. The results also show a period of 15 days for accommodation in early lime, and the first 50 days mainly for BL growth and the final 35 days mostly for BW increase. There is a linear fast growth at 20 - 35 days for BIG and an accelerated increase at 50- 60 days for BWG. As the results express as curve regression, the optimum model of BIG is Quadratic, L = 7. 843 ＋ 2.297t - 0.0105t^2（ R^2 〉 0.99） ,and that of the BWG is Boltzmann, W= 16.541 ＋ （ - 0.621 - 16.541）/（ 1 ＋ e^（t- 54.809）/15.456（ R^2 〉 0.99）. The relationship be

关 键 词： 凡纳滨对虾 低盐度 生长率 生长模型

领　　域： [农业科学]