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| 西江广东鲂的年龄鉴定及生长研究 | |
| 引用本文： | 何美峰,李新辉,谭细畅,李捷,王超,罗建仁,林建志.西江广东鲂的年龄鉴定及生长研究[J].淡水渔业,2007,37(3):54-58. |
| 作者姓名： | 何美峰 李新辉 谭细畅 李捷 王超 罗建仁 林建志 |
| 作者单位： | 1. 广东海洋大学,广东湛江,524088;中国水产科学研究院珠江水产研究所,广州,510380 2. 中国水产科学研究院珠江水产研究所,广州,510380 3. 广东省肇庆市渔政支队,广东肇庆,526040 |
| 基金项目： | 广东省科研计划项目，广东省自然科学基金 |
| 摘 要： | 利用鳞片、脊椎骨和背鳍条三种材料对肇庆自然保护区广东鲂(Megalobrama hoffmanni)的年轮特征进行了研究,并对广东鲂的生长情况进行分析。结果表明:1～4龄三种材料鉴定结果较吻合,5～7龄用脊椎骨鉴定较合适;广东鲂体重生长拐点年龄为4.7龄,5龄前后为合理的捕捞时期,渔获物中3、4龄鱼居多,说明目前捕捞强度过大,需要加强保护力度。 |
| 关 键 词： | 西江 广东鲂(Megalobrama hoffmanni) 年龄 生长 保护 |
| 文章编号： | 1000-6907-（2007）03-0054-05 |
| 修稿时间： | 2006-09-19 |
Age Determination and the Growth of Megalobrama hoffmanni in Xijiang River |
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| HE Mei-feng,LI Xin-hui,TAN Xi-chang,LI Jie,WANG Chao,LUO Jian-ren,LIN Jian-zhi.Age Determination and the Growth of Megalobrama hoffmanni in Xijiang River[J].Freshwater Fisheries,2007,37(3):54-58. | |
| Authors: | HE Mei-feng LI Xin-hui TAN Xi-chang LI Jie WANG Chao LUO Jian-ren LIN Jian-zhi |
| Institution: | 1. Guangdong Ocean University, Zhanjiang, Guangdong 524088; 2. Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, China; 3. Zhaoqing fishery Bureau, Zhaoqing, Guangdong 526040 |
| Abstract: | Annual rings on scale,vertebra and dorsal fin spine of Megalobrama hoffmanni were detected on 208 individuals collected from Xijiang River,Zhaoqing Natural Protect territory,Guangdong Province.The result showed that from age 1 to age 4,the scale,vertebra and dorsal fin spine were suitable for age determination,while the vertebra was more suitable from age 5 to age 7.The age of 4.7 years was the turn off age of M.hoffmanni on the analysis of the growth condition of the M.hoffmanni.For conservation and enhancement of the breeding population,the minimum legal harvestable age of M.hoffmanni should be 5,but the comercial catch of individuals of age 3 and age 4 were dominant.So the resource of M.hoffmanni in Xijiang River should be protected more strictly. |
| Keywords: | Xijiang River Megalobrama hoffmanni age growth protection |
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