| 引用本文: | 刘军,龚世园,何绪刚,张训蒲.湖北武湖日本沼虾的生长特性.湖泊科学,2003,15(2):177-183. DOI:10.18307/2003.0212 |
| LIU Jun,GONG Shiyuan,HE Xugang,ZHANG Xunpu.Studies on the Growth Character of Freshwater Shrimp, Macrobrachium nipponensis, in Wuhu Lake, Hubei Province. J. Lake Sci.2003,15(2):177-183. DOI:10.18307/2003.0212 |
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| 湖北武湖日本沼虾的生长特性 |
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刘军1,2, 龚世园1, 何绪刚1, 张训蒲1
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1.华中农业大学水产学院, 武汉 430070;2.中国科学院水生生物研究所, 武汉 430072
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| 摘要: |
| 从1998年9月至1999年9月对人工养殖湖泊——武湖日本沼虾生长特性作了研究.以月龄来研究日本沼虾的生长,研究结果表明日本沼虾在7-1月份(1-7月龄)呈等速生长,在2-6月份(8-12月龄)呈异速生长.日本沼虾体重(W)与体长(L)呈幂函数相关,但在7-1月份时其b值接近于3,而在2-6月份时其b值明显小于3,其关系式如下:1-7月龄:W♂=0.0148L3.2419(r=0.9978,n=390),W♀=0.0206L3.0117(r=0.9968,n=372); 8-12月龄:W♂=0.0857L2.1788(r=0.9854,n=188),W♀=0.1450L1.8165(r=0.9974,n=278).1-7月龄雄虾的生长规律符合Von Bertalanffy方程,雌虾的生长规律符合Logistic方程;8-12月龄雌雄虾的生长规律都符合Logistic方程. |
| 关键词: 生长 日本沼虾 武湖 |
| DOI：10.18307/2003.0212 |
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| 基金项目:湖北省重点科技发展项目(95012X03)资助. |
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| Studies on the Growth Character of Freshwater Shrimp, Macrobrachium nipponensis, in Wuhu Lake, Hubei Province |
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LIU Jun1,2, GONG Shiyuan1, HE Xugang1, ZHANG Xunpu1
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1.Fisheries Department of Huazhong Agricultural University, Wuhan 430070, P. R. China;2.Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China
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| Abstract: |
| The growth of the freshwater shrimp (M. nipponensis) was studied by the month age. Samples were collected from Wuhu Lake from September 1998 to September 1999. From July to January, its growth is isometric growth, but from February to June, it is allometric growth. The relationship between body weight and body length is fitted to power function. In the period from July to January, the value of b is near to 3, but it is obviously smaller than 3 in the p eriod from February to June. The formulas are respectively:1-7 month age old:W♂=0.0148L3.2419 (r=0.9978, n=390) W♀=0.0206L3.0117 (r=0.9968, n=372) 8-12 month age old:W♂=0.0857L2.1788(r=0.9854, n=188) W♀=0.145L1.8165 (r=0.9974, n=278). We tried to use Von Bertalanffy and Logistic equations to fit the growth law of the shrimp. In each stage, the respective equations of growth of the body length and body weight of M. nipponensis are:1-7 month age old:♂:Lt=5.374[1-e-0.4727(t+0.6009)](r=0.9835,n=390) Wt=3.4429[1-e-0.4727(t+0.6009)]3.2419 (r=0.9835, n=390) ♀:Lt=5.86/(1+e0.3738-0.3806t)(r=0.9804,n=372) Wt=5.30/(1+e2.5143-0.4355t)(r=0.9705, n=372) 8-12monthly old:♂:Lt=7.24/(1+e0.1372-0.1126t)(r=0.9822,n=188) Wt=9.50/(1+e1.6885-0.1012t)(r=0.9901,n=188) ♀:Lt=6.65/(1+e0.2620-0.1375t)(r=0.9910,n=278) Wt=6.40/(1+e1.3621-0.1045t) (r=0.9837, n=278). |
| Key words: Growth M. nipponensis Wuhu Lake |
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