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当前位置: 首页 > 文章 > 山东南部近海秋、冬季星康吉鳗分布与环境因子的关系 中国水产科学 2018 (5) 1115-1122
Position: Home > Articles > Relationship between the spatiotemporal distribution of Conger myriaster and environmental factors in the southern waters off the Shandong Peninsula during autumn and winter Journal of Fishery Sciences of China 2018 (5) 1115-1122

山东南部近海秋、冬季星康吉鳗分布与环境因子的关系

作  者：
李明坤;张崇良;李敏;牟秀霞;任一平
单  位：
中国海洋大学水产学院
关键词：
星康吉鳗;分布;环境因子;水深;GAM模型
摘  要：
根据2016年10月和2017年1月在山东半岛南部海域秋、冬2个航次获取的渔业资源与栖息环境调查数据,分析了星康吉鳗(Conger myriaster)的时空分布特征。运用广义可加模型研究了星康吉鳗数量分布与季节、水深、底层盐度和底层水温等影响因子间的关系。结果表明,该海域星康吉鳗的数量分布有明显的季节变化,秋季的渔获率高于冬季,且分布范围更广。星康吉鳗在近岸海域渔获率较高,分布相对均匀,远岸海域渔获率较低,分布不均匀。广义可加模型显示,对星康吉鳗分布影响显著的环境因子为水深和底层水温(P<0.05),其中水深的影响最为明显。星康吉鳗渔获率随水深的增大呈现先增加后减少再增加的趋势,在水深30~40 m处渔获率较高。星康吉鳗渔获率随水温的升高呈现先增加再减少的趋势,最适水温约为10℃。山东南部近海星康吉鳗的空间分布与其洄游习性、黄海暖流的季节变化等引起的海洋环境因子的变动有关。
译  名：
Relationship between the spatiotemporal distribution of Conger myriaster and environmental factors in the southern waters off the Shandong Peninsula during autumn and winter
作  者：
LI Mingkun;ZHANG Chongliang;LI Min;MU Xiuxia;REN Yiping;College of Fisheries, Ocean University of China;Laboratory for Marine Fisheries Science and Food Production Processes,Qingdao National Laboratory for Marine Science and Technology;
单  位：
LI Mingkun%ZHANG Chongliang%LI Min%MU Xiuxia%REN Yiping%College of Fisheries, Ocean University of China%Laboratory for Marine Fisheries Science and Food Production Processes,Qingdao National Laboratory for Marine Science and Technology
关键词：
Conger myriaster;;distribution;;environmental factor;;water depth;;generalized additive model(GAM)
摘  要：
Based on the survey data of fishery resources and habitat, collected at 63 stations in October 2016 and January 2017 in the southern waters off the Shandong Peninsula, we analyzed spatiotemporal distribution of Conger myriaster and examined its relationship with environmental variables, including survey season, water depth, bottom salinity, and bottom water temperature, using generalized additive model(GAM). The results showed significant seasonal variations in the distribution of C. myriaster. The stock had significantly higher density and wider range in autumn than in winter, and stock density was higher in the coastal waters and lower in the offshore waters. In addition, the stock showed more even distribution in the coastal waters, but distribution patterns varied greatly in the offshore waters. GAM identified depth and bottom water temperature as the major environmental factors influencing distribution(P<0.05) and the effect of water depth was the most significant. Stock density increased with depth at shallow waters, peaking at the depth of 30–40 m, but decreased with further increase in water depth. The most suitable water temperature range was around 10℃. The temperature effect might be attributed to the migratory habits of this species and the variations in the environmental conditions caused by seasonal changes in the Yellow Sea Warm Current.

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