文章摘要
李思发,蔡正纬,陆伟民,何希,赵品如.长江水系鲢鱼和珠江水系鲢鱼的生长差异[J].水产学报,1984,8(3):210~218
长江水系鲢鱼和珠江水系鲢鱼的生长差异
ON THE GROWTH RATE OF SILVER CARPS FROM DIFFERENT SOURCES OF CHANGJIANG RIVER AND ZHUJIANG RIVER
  
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英文关键词: 
基金项目:国际科学基金会(International Foundation for Science)科研项目A/507的资助
作者单位
李思发 上海水产学院 
蔡正纬 上海水产学院 
陆伟民 上海水产学院 
何希 上海水产学院 
赵品如 上海市南汇养殖场 
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中文摘要:
      为考察和比较不同水系鲢鱼的生长特点,把来源不同的四种鲢鱼,即长江野生鲢鱼、长江流域人工繁殖鲢鱼、珠江野生鲢鱼和珠江流域人工繁殖鲢鱼,分组在精养成鱼池、网箱及自净式水池中混养,进行同一环境中和不同环境中的生长速度的比较研究。试验鱼从2月龄起观察到16月龄止,平均个体大小从全长12厘米,体重16克起到39厘米、605克止。试验结果表明,来源于两水系的鲢鱼的生长速度有着规律性的差异。不论野生的还是人工繁殖的,珠江鲢鱼的早期生长速度都比长江鲢鱼略快,但后期的生长情况却相反,长江鲢鱼的生长速度变得比珠江鲢鱼快,在第二年的养殖中越来越显出长江鲢鱼的生长优势。第二年1月份试验开始时,体重比珠江鲢鱼小的长江鲢鱼,至11月份时却超过了珠江鲢鱼。在第二年养殖过程中,四种不同来源鲢鱼体重增长率的大小顺序是长江野生鲢鱼>珠江野生鲢鱼>长江人工繁殖鲢鱼>珠江人工繁殖鲢鱼。
英文摘要:
      An attempt has been made to compare the growth rate of silver carps from dif-ferent sources.They are, a group of wild silver carp and a group of domesticated silver carp from Changjiang River, and a group of wild silver carp and,group of domesticated silver carp from Zhujiang River. Experiments were parried out in fish rearing ponds, net cages and self-purification round ponds. In each experiment the fish of 4 groups reared were mingled and each group was marked by fin-clipping.The fish were reared from 2 months to lfi months old, the total length were from 12 cm to 39 cm, and the body weight were from 16g to 605g.Results showed that a regular differerence of growth rate existed within the 4 groups of silver carp. fn spite of wild or domesticated, the two groups from Zhujiang·River grew fast in the first year,then slowed down in second year. On the contrary,silver carp from Changjiang River appeared slow in the first year and rapidly pragres-sed in the second year. Consequently。surpassing weight of 28---66 g offer Zhujiang River silver carp was produced. The order of growth rate of the 4, groups were:Changjiang wild silver carp>Zhujiang wild silver carp>Changjiang domestic silver carp>Zhujiang domestic silver carp.
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