天津海域鱼卵、仔稚鱼资源动态研究  

Resource dynamics of fish eggs and larvae in Tianjin sea area

作　　者：谷德贤[1] 王婷 徐海龙 王娜[1] 吴宁[1] 李文雯[1] 刘国山[1] GU Dexian;WANG Ting;XU Hailong;WANG Na;WU Ning;LI Wenwen;LIU Guoshan(Tianjin Fisheries Research Institute, Tianjin 300221, China)

机构地区：[1]天津市水产研究所,天津300221

出　　处：《大连海洋大学学报》2020年第4期557-563,共7页Journal of Dalian Ocean University

基　　金：天津市农业服务发展中心青年科技创新项目“天津水域鱼类资源种类名录及图谱构建”。

摘　　要：为了解近年来天津海域鱼卵、仔稚鱼资源动态情况,根据2012—2018年29个航次367个站次对天津海域鱼卵、仔稚鱼及相关环境因子的调查数据,利用丰度、优势度公式及广义加性模型(Generalized additive model,GAM)等,分析了天津海域鱼类早期补充幼体的种类组成、丰度、空间分布、优势种、环境影响因子。结果表明:天津海域7年共监测到鱼卵、仔稚鱼31种,其中鱼卵17种,仔稚鱼23种;5月和6月是产卵盛期;主要繁殖季节中,鱼卵优势种主要为斑鰶Konosirus punctatus、石首鱼科Sciaenidae和短吻红舌鳎Cynoglossus joyneri,仔稚鱼优势种主要为鮻Planiliza haematocheila、斑鰶、赤鼻棱鳀Thryssa kammalensis等;基于GAM分析,温度和浮游动物是鱼卵、仔稚鱼丰度的主要影响因素。研究表明,天津海域当前鱼卵、仔稚鱼资源衰退明显,有待加强保护力度。Species composition,abundance,spatial distribution,dominant species and environmental impact factors of recruit fish eggs and larvae in early stage were investigated in Tianjin coast by biological density,dominance formula and generalized additive model(GAM)based on the survey data of fish eggs and larvae in 367 stations duing 29 voyages from 2012 to 2018 to grasp the resource dynamics of fish eggs and larvae in the Tianjin sea area in recent years.The results showed that fish eggs,with dominant species of gizzard shad Konosirus punctatus,Sciaenidae,and Joyner's tongue sole Cynoglossus joyneri,and larvae of 31 species,with dominant species of mullet Planiliza haematocheila,gizzard shad,and anchovy Thryssa kammalensis,were found in Tianjin sea area,including 17 species of fish eggs and 23 species of fish larvae,primary spawn in May and June.GAM analysis revealed that temperature and zooplankton were the main factors influencing abundances of fish eggs and larvae.The findings indicated that the current decline in abundances of fish eggs and larvae was serious,urging to be strengthen for protection.

关 键 词：天津海域 鱼卵 仔稚鱼 渔业资源 

分 类 号：S932[农业科学—渔业资源]