湛江北部湾海域养殖墨西哥湾扇贝重量性状增长规律的研究  

Studies on growth of weight traits of cultured Argopecten irradians concentricus in Zhanjiang sea area

作　　者：王辉[1] 刘志刚[1] 符世伟[1] 

机构地区：[1]广东海洋大学水产学院,广东湛江524025

出　　处：《热带海洋学报》2007年第5期53-59,共7页Journal of Tropical Oceanography

基　　金：广东省科技厅资助项目(2005B26001079;2006B20201055)

摘　　要：采用模型拟合方法研究了湛江北部湾海域养殖墨西哥湾扇贝Argopecten irradians concentricus一个养殖周期的重量增长规律。结果表明,墨西哥湾扇贝各重量性状增长过程遵循Logistic生长模型。通过Levenberg-Mar-quardt迭代法求出模型中3个生长参数,建立了各性状生长方程,并得出各重量性状的生长极限值为体重28.29g、壳重17.27g、生殖腺重0.44g、软体部重11.21g、闭壳肌重5.35g;各重量性状的生长拐点分别为体重5.86个月、壳重6.11个月、生殖腺重5.01个月、软体部重5.55个月、闭壳肌重5.86个月,其中生殖腺重出现增长提早、壳重出现增长延缓现象;各重量性状的绝对增长速度为体重>壳重>软体部重>闭壳肌重>生殖腺重;重量性状相对于形态性状出现生长延缓现象。The growth of weight traits within one culture cycle of cultured Argopecten irradians concentricus in the Zhanjiang sea area was investigated using model fitting procedure. The results showed that the growth of weight traits of the scallop conformed to the Logistic model. Three growth parameters of the Logistic model were estimated by Levenberg-Marquardt iteration method, and were employed to establish the growth equation of each weight trait. The growth limits of the weight traits of the scallop were 28.29g for wet weight, 17.27g for shell weight, 0.44g for gonadal weight, 11.21g for tissue weight, and 5.35g for adductor weight, respectively. The growth inflection points of the weight traits were 5.86 months for wet weight, 6.11 months for shell weight, 5.01 months for gonadal weight, 5.55 months for tissue weight, and 5.86 months for adductor weight, respectively. The growth of gonad weight appeared ahead of time, while the growth of shell weight was delayed The absolute growth rates of the weight traits were in the order of wet weight, shell weight, tissue weight, adductor weight, and gonadal weight from high to low, showing a delay compared with the morphological traits.

关 键 词：墨西哥湾扇贝Argopecten IRRADIANS concentricus 重量 Logistic生长模型 生长参数 

分 类 号：S917[农业科学—水产科学]