| 池塘放养中华绒螯蟹长江种群与辽河种群性早熟出现差异的观察与分析 |
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| 引用本文： | 王成辉,李思发,李晨虹,赵金良.池塘放养中华绒螯蟹长江种群与辽河种群性早熟出现差异的观察与分析[J].湖泊科学,2001,13(1):57-62. |
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| 作者姓名： | 王成辉 李思发 李晨虹 赵金良 |
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| 作者单位： | 农业部水产增养殖生态、生理重点开放实验室，上海水产大学，上海 200090 |
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| 基金项目： | 国家“九五”科技攻关项目! (96 - 0 0 8- 0 1- 0 3 - 0 5 )资助 |
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| 摘 要： | 在上海水产大学上海崇明试验基地池塘养殖中发现 ,中华绒螯蟹辽河种群性早熟个体最初捕捉日期为 8月 15日 ,而长江种群为 8月 2 0日 ,二者相差 5d .此后性早熟个体的捕捉数量逐渐上升 ,10月份达高峰期 ,11月份显著下降 .在性早熟蟹群体中 ,辽河种群的性腺发育略领先于长江种群 ,而体重显著低于长江种群 (P <0 .0 1) ;雌、雄性早熟蟹不存在显著的体重差异 ,但雌性个体数量明显多于雄性个体数量 .
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| 关 键 词： | 中华绒螯解 长江种群 辽河种群 性早熟 体重 池塘养殖 |
| 收稿时间： | 4/3/2000 12:00:00 AM |
| 修稿时间： | 2000年4月3日 |
Observation and Analysis on Appearing Difference of Precocious Crab of Yangtze Population and Liaohe Population Cultured in Ponds |
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| WANG Chenghui,LI Sif,LI Chenhong and ZHAO Jinliang.Observation and Analysis on Appearing Difference of Precocious Crab of Yangtze Population and Liaohe Population Cultured in Ponds[J].Journal of Lake Science,2001,13(1):57-62. |
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| Authors: | WANG Chenghui LI Sif LI Chenhong and ZHAO Jinliang |
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| Institution: | Key Laboratory of Ecology an d Physiology in Aquaculture, Ministry of Agriculture, Shanghai Fisheries University, Shanghai 200090, P. R. China,Key Laboratory of Ecology an d Physiology in Aquaculture, Ministry of Agriculture, Shanghai Fisheries University, Shanghai 200090, P. R. China,Key Laboratory of Ecology an d Physiology in Aquaculture, Ministry of Agriculture, Shanghai Fisheries University, Shanghai 200090, P. R. China and Key Laboratory of Ecology an d Physiology in Aquaculture, Ministry of Agriculture, Shanghai Fisheries University, Shanghai 200090, P. R. China |
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| Abstract: | Combined with culture of juvenile crab in Chongmin experimental station, a comparative experiment was conducted on the precocious conditions of Yangtze population and Liaohe population of mitten crab ( Eriocheir sinensis ). The first catched date of Yangtze population was Aug.15, and Liaohe population was Aug. 20. From that time, the number of catched prococious crab of both population climbed rapidly and reached the peak in Oct. The gonad of Yangtze population developed earlier than that of Liaohe population. In precocious population, the mean weight of Liaohe population was lower that of Yangtze population and sex difference in weight had no significance ( P >0.05), but the number of male crab was much higher than that of female crab ( P >0.05). |
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| Keywords: | Eriocheir sinensis Yangtze population Liaohe population precociousness body weight |
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