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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Your Position :Home->Past Journals Catalog->2015 Vol.34 No.1

Estimation of Biological Parameters for Hypophthalmichthys molitrix in the Poyang Lake through the Yangtze River Waterway
Author of the article:WU Bin1, FANG Chunlin1*, HE Gang1, FU Peifeng1, XIONG Xiaoying2, ZHOU Huiming1, ZHANG Yanping1, WANG Sheng1, WAN
Author's Workplace:1. Fisheries Research Institute of Jiangxi Province, Scientific Observing and Experimental Station of Fishery Resources and Environment in Poyang Lake, Ministry of Agriculture, Nanchang 330000, China;
2. Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, School of Geography and Environment, Jiangxi Normal University, Nanchang 330000, China
Key Words:Hypophthalmichthys molitrix; FiSATⅡ; growth; Poyang Lake
Abstract:Based on the length-frequency data that collected by setting net fishery survey in the Poyang Lake through the Yangtze River Waterway from March, 2012 to February, 2013, growth, mortality and recruitment of Hypophthalmichthys molitrix were estimated using FiSATⅡsoftware. The results were summarized as follows: the length of H. molitrix population ranged from 81 mm to 835 mm, the relationship between body length (L/mm) and body weight (W/g) could be expressed as W=3.987×10-5L2.850(R2=0.964, n=893); the estimated parameter for von Bertalanffy growth equation was L=879.38 mm, K=0.100, t0=-1.141. Total mortality (Z) was estimated as 0.520a-1, natural mortality (M) 0.245 a-1, and fishing mortality (F) 0.275 a-1. The exploitation rate was 0.529, indicated that the resource of H. molitrix was on the state of over-exploitation in the area. The recruitment pattern was continuous with peak within the months from June to October. Therefore, it was suggested that fishing ban period should be adjusted in order to restore and conserve the H. molitrix resources.
2015,34(1): 93-98 收稿日期:2014-7-22
DOI:10.3969/j.issn.1000-7083.2015.01.016
分类号:Q959.4
基金项目:鄱阳湖湿地与流域研究教育部重点实验室开放基金(编号:PK2012003);赣鄱英才555工程刀鲚调查专项基金
作者简介:吴斌(1984-),男,硕士,助理研究员,主要从事环境影响评价和渔业资源开发研究
*通讯作者:方春林,副研究员,主要从事鱼类营养与鱼类种质资源研究,E-mail:chunlinf@163.com
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