长江中游养殖湖泊大通湖河蚬种群动态及次级生产力（英文）  

POPULATION DYNAMICS AND SECONDARY PRODUCTION OF CORBICULA FLUMINEA(MüLLER, 1774) IN A TYPICAL AQUACULTURAL LAKE(DATONG) OF THE CENTRAL YANGTZE RIVER BASIN, CHINA

作　　者：李德亮[1] 张健[1] 皮杰[1] 高子涵[1] 肖调义[1] 陈宇顺[2,3] LI De-Liang;ZHANG Jian;PI Jie;GAO Zi-Han;XIAO Tiao-Yi;CHEN Yu-Shun(Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province,Hunan Engineering Technology Research Center of Featured Aquatic Resources Utilization,College of Animal Science and Technology,Hunan Agricultural University,Changsha 410128,China;State Key Lab for Freshwater Ecology and Biotechnology,Institute of Hydrobiology,Chinese Academy of Sciences,Wuhan 430072,China;University of Chinese Academy of Sciences, Beijing 100049,China)

机构地区：[1]湖南农业大学动物科学技术学院,水产高效健康生产湖南省协同创新中心,湖南省特色水产资源利用工程技术研究中心,长沙410128 [2]中国科学院水生生物研究所,淡水生态与生物技术国家重点实验室,武汉430072 [3]中国科学院大学,北京100049

出　　处：《水生生物学报》2018年第6期1144-1152,共9页Acta Hydrobiologica Sinica

基　　金：Supported by the Special Fund for Agro-Scientific Research in the Public Interest(201303056 and 201503108);Chinese Academy of Sciences(Projects Y45Z04,Y62302 and ZDRW-ZS-2017-3-2)。

摘　　要：2011年3月至2012年2月,通过逐月调查的方式,分析了大通湖河蚬的种群动态,并采用体长频率分布法计算其次级生产力。调查共采集分析河蚬4108个,壳长(SL)和湿重(WW)范围分别为3.41—29.58 mm和0.005—10.03 g。大通湖河蚬SL和WW之间的关系为WW=–3.52+3.08logSL (R2=0.97),表明其种群呈异速生长;繁殖高峰主要集中在3—4月和8—10月。河蚬的年平均密度和生物量(,以无灰干重计, AFDW)分别为(274±95) ind./m2和(20.1±5.7) g AFDW/m2,年次级生产力(P)为23.90 g AFDW/(m2·年), P/系数为1.20/年,周转率为298d。基于VonBertalanffy季节生长方程估算的河蚬生长参数为:渐近壳长L∞=31.91 mm,生长速率K=0.45,振幅C=0.84,冬季点WP=0.09,表明大通湖河蚬生长呈明显的季节性, 1月生长速率最低。河蚬最长寿命(tmax)约为4.44年,年总死亡系数(Z)为1.68,自然死亡系数(M)为0.89,捕捞死亡系数(F)为0.79,年开发率(E)为0.47。结果表明大通湖河蚬资源处于过度开发状态,急需采取有效的措施对其资源进行合理保护。Samples of Corbicula fluminea(Müller,1774)were collected monthly from March 2011 to February 2012 in the Datong Lake to study its population dynamics and secondary production in its native environment.A total of 4,108 C.fluminea were collected and measured,with shell length(SL)ranging from 3.41 to 29.58 mm,and wet weight(WW)ranged from 0.005 to 10.03 g.The calculated SL-WW equation was log WW=–3.52+3.08 log SL(R2=0.97),which showed that the growth curve of C.fluminea followed a positive allometric pattern.The recruitment patterns peaked in one from March to April and the other one during the months of August to October.The mean annual abundance and biomass()were(274±95)ind./m2 and(20.1±5.7)g AFDW/m2(Ash Free Dry Weight,AFDW),respectively.The annual secondary production(P)was estimated to be 23.90 g AFDW/m2·year,resulting in a P/ratio of 1.20/year and a turnover time of 298 days.The asymptotic maximum length(L∞),curvature parameter(K)and seasonal oscillation in growth rate(C)derived from the von Bertalanffy Seasonal Growth Formula(VBSGF)were 31.91 mm,0.45/year,and 0.84,respectively.The slowest growth period was in January,and the potential lifespan(tmax)was estimated to be 4.44 years.The total mortality(Z),natural mortality(M)and fishing mortality rates(F)estimated were 1.68/year,0.89/year and 0.79/year,respectively.Its exploitation rate(E=0.47)indicated a slightly high exploited stock that needs some management intervention to maintain the sustainability of this fishery resource.

关 键 词：河蚬 种群动态 次级生产力 生长 死亡率 大通湖 

分 类 号：S932.6[农业科学—渔业资源]