【摘要】 该研究对不同生长发育时期凡纳滨对虾(Litopenaeus vannamei)体质量和体长进行了测定,利用Logistic、Gompertz和Von Bertalanffy 3种非线性模型对凡纳滨对虾体质量和体长进行生长曲线拟合,并对体质量和体长的生长关系进行了分析。结果表明,3种曲线模型都能很好地模拟凡纳滨对虾体质量和体长的生长曲线,Gompertz模型模拟体质量生长曲线最优,拟合度R2=0.855,拐点在第169天,拐点体质量为16.81 g;Logistic模型模拟体长生长曲线最优,拟合度R2=0.917,拐点在第95天,拐点体长为74.44 mm;幂函数能很好地反映体质量和体长之间的关系,其拟合度R2=0.992。还计算了凡纳滨对虾体质量和体长的绝对生长率,分析了凡纳滨对虾生长发育规律,以期为凡纳滨对虾的养殖和选育提供基础资料。更多还原

【Abstract】 We measured the body weight and body length of Litopenaeus vannamei at different developmental stages by three kinds of nonlinear models( Logistic,Gompertz and Von Bertalanffy),and used the power function model to describe the relationship between body weight and body length. The results indicate that the three kinds of nonlinear models could fit the growth curves well. Gompertz model fit the growth curve of body weight best,and the fitting degree,inflection point of time and inflection point of body weight were0. 855,169 d and 16. 81 g,respectively. Logistic model fit the growth curve of body length best,and the fitting degree,inflection point of time and inflection point of body length were 0. 917,95 d and 74. 44 mm,respectively. Power function model could fit the relationship between body weight and body length well,and the fitting degree was 0. 992. We also calculated the absolute growth rate of body weight and body length,as well as analyzed growth and development rules of L. vannamei. The results provide references for selected breeding of L. vannamei.更多还原