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当前位置: 首页 > 文章 > 黄河口泥螺种群夏季分布特性及其与底质环境的关系 渔业科学进展 2013,34 (3) 38-45
Position: Home > Articles > Preliminary study on distribution characteristics and living environment of Bullacta exarata population in Yellow River Estuary,China Progress in Fishery Sciences 2013,34 (3) 38-45

黄河口泥螺种群夏季分布特性及其与底质环境的关系

作  者：
吴文广;冷宇;张继红;张守本;杜美荣
单  位：
上海海洋大学水产与生命学院;国家海洋局北海环境监测中心;山东省潍坊市海洋环境监测中心站;农业部海洋渔业可持续发展重点实验室中国水产科学研究院黄海水产研究所
关键词：
泥螺;种群;底质环境;黄河口
摘  要：
2011年8月对黄河口潮间带泥螺Bullacta exarata种群及底质环境条件进行了调查,以期了解泥螺与底质环境的相互作用关系。调查结果显示,1)泥螺主要分布于中值粒径Mdφ为3.73～5.25范围的中潮带,底质类型主要由砂、粉砂质砂和砂质粉砂组成;2)黄河口以南滩涂表层泥有机质含量和底质叶绿素a含量均值分别为1.39%、2.65%,总体水平高于北岸表层泥有机质含量和底质叶绿素a含量,均值分别为0.54%、1.48%,方差分析结果显示,差异显著(P<0.05);3)黄河口南岸滩涂泥螺密度均值为16.7ind/m2,明显高于北岸的0.6ind/m2,经方差分析,差异显著(P<0.05)。各断面泥螺密度(x)与泥螺个体的平均壳长(y)变化趋势相反,其关系式为:y=-0.1801x+19.184,R2=0.776,呈显著相关(P<0.05),泥螺的个体规格与密度成反比,即泥螺密度越高的站位,个体规格越小;4)Taylor幂法则、Iwao聚集格局回归分析法及Morisita指数分析结果表明,黄河口泥螺种群空间格局属于聚集型负二项分布;5)泥螺种群密度与表层泥有机质含量和底质叶绿素a含量正相关,回归关系显著(P<0.05),说明食物可能是影响泥螺种群分布的主要因素之一。
译  名：
Preliminary study on distribution characteristics and living environment of Bullacta exarata population in Yellow River Estuary,China
作  者：
WU Wen-guang1,2 LENG Yu3 ZHANG Ji-hong2* ZHANG Shou-ben4 DU Mei-rong2(1 College of Life Science and Technology,Shanghai Ocean University,201306)(2 Key Laboratory of Sustainable Development of Marine Fisheries,Ministry of Agriculture,Yellow Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Qingdao 266071)(3 North China Sea Envirmental Monitoring Center,State Oceanic Administration,Qingdao 266033)(4Shandong Province Weifang City Marine Environment Monitoring Center Station,261041)
关键词：
Bullacta exarata Population Sedimental environment Yellow River Estuary
摘  要：
In order to understand the interaction between Bullacta exarata and sedimental environment,population of B.exarataand sediment characteristics were investigated at the typ-ical distribution area of the Yellow River estuary in August,2011.The results were as follows:(1)B.exarata was mainly distributed in mudflats with median particle diameterφ(Mdφ)ranging from 3.73～5.25;and the sediment types were composed of silt,salt-sand and sand-salt.(2)The average organic content and Chl-a concentration in surface sediment of the south intertidal zone was 1.39%and 2.65μg/g,which was significantly higher than in the north of the estuary with an average organic content of 0.54%and Chl-a concentration of 1.48μg/g.(3)The average population density was 16.7ind/m2,which was significantly higher in the south intertidal zone than in the north of the estuary with the average population densities of 0.6ind/m2.The relationship between population density(x)and average shell length(y)could best be expressed as the linear equation:y=-0.180 1x+19.184,R2=0.776.B.exarata body size and population density was inversely proportional;the higher the population density,the smaller the body size.(4)Taylor'power law,Iwao's patch regression and Morisita index analysis results showed that the spatial pattern of B.exarata population in the estuary belonged to the clumped and negative binomial distribution theoretically.(5)There were positive relationships between the density of B.exarata and organic content or Chl-a,suggesting that food source might be one of the main limiting factors for the distribution of B.exaratapopulation.

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