人工养殖环境下中华鲟野生幼鲟的生长特征  

Growth of wild juvenile Chinese sturgeon(Acipenser sinensis) farmed in the artificial environment

作　　者：吴建辉 刘健 陈锦辉 

机构地区：[1]上海市长江口中华鲟自然保护区管理处,上海200092

出　　处：《渔业现代化》2007年第6期31-34,共4页Fishery Modernization

摘　　要：暂养2006年5月渔民在崇明东滩误捕受伤的中华鲟野生幼鲟,分析研究了其6—8月的生长特点。结果显示,抢救存活的中华鲟幼鲟在人工环境下,体长和体重分别从(15.40±0.64)cm和(26.00±1.34)g增加到(29.20±0.75)cm和(108.00±3.87)g,日均增长1.54 mm,日平均增重0.90 g。拟合中华鲟幼鲟体长与体重的关系为:W=0.121 5 L2.031 3(R2=0.945 7),其中b小于3,为异速生长,说明其体长增长快于体重增长。与同期野生环境下的中华鲟幼鲟比较,幂指数系数b人工=2.0313<b野生=2.3474,肥满度C人工=0.59<C野生=0.72,说明幼鲟在野生环境下的长势较在人工环境下要好。这一现象可能是野生幼鲟误捕受伤,以及在人工环境下环境不适和饵料不适口所导致的。通过中华鲟野生幼鲟的生物学研究,养殖环境和抢救技术的改进,中华鲟野生幼鲟在人工养殖环境下救护是可行的。The wild juvenile Chinese sturgeon （ Acipenser sinensis ） catehed in the Dongtan of Chongming island by the fisherman on May, 2006, was bred in the artificial environment from June to August. This paper investigated its growth feature in the artificial environment . The result of the study is that juveniles＇body length increased from （15.40 ±0.64） cm to （29.20± 0.75 ） cm among three months, 1.54 mm in daily length increased, and its body weight increased from （26.00 ± 1.34） g to （ 108.00 ± 3.87 ） g among three months, 0.90 g in daily weight increased. The relationship between BL and BW of juvenile Acipnser sinensis was W = 0.121 5L^2.0313（R^2 =0.945 7） （b 〈3）, that is to say the growth of length was faster than of weight. And comparing the growth of wild juvenile Acipenser sinensis in the artificial environment and in the wild environment, the result is that juvenile Acipenser sinensis grow in the wild is faster than its grow in the artificial environment. The results may infer that the growth differences may be caused by injured, not fit for environment and food when juvenile Acipenser sinensis is bred in the artificial environment.

关 键 词：野生中华鲟 人工养殖环境 崇明东滩 异速生长 肥满度 

分 类 号：S829.1[农业科学—畜牧学]