| 鄱阳湖鲤的年龄与生长特征 |
| Age and Growth of Cyprinus carpio L.in Poyang Lake |
| 投稿时间：2009-01-03 |
| DOI： |
| 中文关键词:鄱阳湖 鲤 年龄 生长 |
| 英文关键词:Poyang lake Cyprinus carpio Age Growth |
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| 中文摘要: |
| 为了解大型通江湖泊鄱阳湖中鲤（Cyprinus carpio Linnaeus）的种群状况，根据2001年采集的448尾标本，对鲤的年龄和生长特征进行了研究。鄱阳湖鲤鳞片上的年轮表现为切割与疏密特征，尤以切割为主。渔获物群体平均体长为32．6cm，平均体重为941．7g，年龄结构为0^＋ -4^＋龄，其中3^＋龄以下个体约占94．0％。鳞径（R）与体长（L）的关系为L=6．7963＋29．421R（r=0．9128），体重（W）与体长（L）的关系为形=0．0219L^3.0018（r=0．9979），拟合的Von Bertalanffy生长方程参数为L∞=97．26cm，W∞=20315．39g，k=0．2073，t0=0．7841。与其它水域相比，鄱阳湖鲤生长较快，其生长拐点年龄为4．52龄，建议将其捕捞年龄确定在4．5龄左右。与20世纪70年代相比，鄱阳湖鲤表现出小型化趋势，应采取实施春季禁渔制度、控制捕捞强度、提高捕捞年龄、保护湖滩草洲生态环境等措施，实现渔业资源增殖。 |
| 英文摘要: |
| To evaluate the current status of common carp （ Cyprinus carpio L. ） population in Poyang lake, a large lake connecting with Yangtze river, a survey was carried out to study its age and growth based on 448 samples collected in 2001. The annuli on scales of common carp in Poyang lake was marked by the intersection of successive groups and the interspace between the sparse zones and the dense zones of circuli, and the former was the main marker. The average body length of catch was 32.6 cm, the average body weight was 941.7 g, and the age ranged from 0^＋ to 4^＋ with 94.0% individuals under 3 a. The relationship between body length （L） and scale radius （R） or body weight （W） was express as L =6. 7963 ＋29.421R （r =0. 9128） and W =0. 0219L^3.0018（r =0. 9979）. The parameters of von Bertalanffy growth equation were： L∞ = 97.26 cm, W∞ = 20 315.39 g, k = 0. 2073 a, to = -0. 7841 a. Compared with the other waters, common carp in Poyang lake grows faster. Its growth inflection age was 4.52 a, so the harvesting age was suggested for about 4.5 a. Compared with 1970s, common carp in Poyang lake has a tendency of miniaturization and countermeasures such as enforcing the spring closed fishing, controlling fishing intensity, elevating harvesting age and protecting aquatic vegetation were proposed to protect the fish resources. |
| 熊飞,刘绍平,段辛斌,陈达庆.2009.鄱阳湖鲤的年龄与生长特征[J].水生态学杂志,30(4):66-70. |
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