Position: Home > Articles > Studies on the population structure of Lota lota (Linnaeus) in upper stream of Wusuli River
Chinese Journal of Fisheries
2004,17
(2)
11-14
乌苏里江上游虎头江段江鳕捕捞群体结构特性的研究
作 者：
孟令博;姜作发;唐富江
单 位：
中国水产科学研究院黑龙江水产研究所;东北农业大学动物科学技术学院水产养殖系
关键词：
乌苏里江上游;江鳕;种群结构
摘 要：
20 0 3年 5、 1 0月对乌苏里江上游虎头江段江鳕进行种群结构及生物学特性调查研究 ,通过对 60尾样本分析 ,结果表明 :乌苏里江上游虎头江段江鳕W =0 0 1 95L2 70 2 2 (r=0 8991 ) ,性比 (♀ :♂ )为 1 2 :1。种群结构低龄个体所占比例明显偏高 ,年龄组成以 2 +～ 3+为主 ,4+以上个体较少 ,种群低龄化现象严重 ,生殖群体组成单一 ,基本由第一次性成熟个体组成 ,种群数量 2 0 0 2年 7 8t,2 0 0 3年 7 5t。目前乌苏里江上游虎头江段江鳕的资源状况处于下降状态。
译 名：
Studies on the population structure of Lota lota (Linnaeus) in upper stream of Wusuli River
作 者：
MENG Ling-bo1,JIANG Zuo-fa2,TANG Fu-jiang2 (1.The Colege ofAnimalScience and Technology,Northeast Agricultural University,Harbin 150030,China; 2.Heilongjiang River Fishery Research Institute,Chinese Academy of Fishery Scienes,Harbin 150070,China)
关键词：
Upper stream of Wusuli River;Lota lota(Linnaeus;Population structure
摘 要：
The Lota lota(Linnaeus)population in upper stream of Wusuli River was investigated in 2002～2003. 60 samples was analyzed for growth characteristics and the population structure.By means of biostatistics analysis,the relationship between body length (L cm) and body weight(W g) can be stated by W=0.0195L 2.7022(r=0.8991).Sex ratio (♀:♂)is about 1.2:1. The age composition was mainly 1+～2+,and most of them is low age.The result showed that its community population was destroyed The stock was overfished.It is necessary to recover the resources.
相似文章
-
乌苏里江上游虎头江段哲罗鱼种群结构及生长特性 [姜作发, 唐富江, 尹家胜, 董崇智] 东北林业大学学报 2004,32 (4) 54-56
