黄海南部和东海北部夏季小黄鱼幼鱼的空间分布研究  

Spatial distribution of Larimichthys polyactis juveniles in the southern Yellow Sea and northern East China Sea in summer

作　　者：高阳 张翼[2,3] 张辉 刘尊雷[2,3] 李圣法 程家骅[2,3] GAO Yang;ZHANG Yi;ZHANG Hui;LIU Zunlei;LI Shengfa;CHENG Jiahua(College of Marine Sciences,Shanghai Ocean Uniersity,Shanghai 201306,China;East China Sea Fisheries Research Insitude,Chinese Aoademy of Fishery Sciences,Shanghai 200090,China;Key Iaboratory of East Chin.Sea Fishery Resoures Derelopment and Eploiation.Ministry of Agricalure and Rural Afair,Shanghai 20090,China)

机构地区：[1]上海海洋大学海洋科学学院,上海201306 [2]中国水产科学研究院东海水产研究所,上海200090 [3]农业农村部东海渔业资源开发利用重点实验室,上海200090

出　　处：《海洋渔业》2023年第1期86-94,共9页Marine Fisheries

基　　金：农业农村部财政专项(125C0505)。

摘　　要：小黄鱼(Larimichthys polyactis)为我国近海生态系统中的重要经济种类,幼鱼补充群体的资源丰度和空间分布很大程度会影响小黄鱼总体种群动态,而幼鱼分布易受到环境因素影响而呈现一定的空间格局。为了解小黄鱼幼鱼的空间分布特征,基于2019年8月黄海南部和东海北部(30°30′N~35°00′N、120°00′E~127°00′E)小黄鱼幼鱼与环境调查数据,运用3种广义可加模型(generalized additive model, GAM):Tweedie-GAM、Delta Gamma-GAM和Delta Lognormal-GAM探究资源丰度与相关环境因子之间的关系。结果表明,从3种模型的拟合效果和预测能力看,Delta Gamma-GAM最优(均方根误差RMSE值为12 014.43,Pearson相关系数r值为0.461,Spearman秩相关系数ρ值为0.699)。小黄鱼的分布在空间上具有高度的集群性,集中分布范围在32°N~34°N、122°E~124°E的海域,并以此为中心向周围呈递减扩散分布。各环境因子中,小黄鱼幼鱼分布只与水深有显著性关联,表现为负相关的线性关系,反映了小黄鱼幼体偏好近岸的分布格局。Small yellow croaker Larimichthys polyactis is an economically important species in Chinese offshore ecosystem. Juvenile is in an important period of transition from larvae to adult. This stage is not only different from the characteristics of high natural mortality and fluctuating abundance in the early life history period, but also different from the higher feeding capacity and environmental adaptation of adults. Juveniles have different preferences for the choice of living environment.The abundance and spatial distribution of the juvenile are crucial to the population dynamics and they are sensitive to environmental factors. Therefore, studying the geographic distribution pattern of juvenile populations and their dominant factors will help to clarify their selection patterns for the living environment. Larimichthys polyactis has obvious cluster habit and migration characteristics. It does seasonal migration throughout the year between spawning grounds, feeding grounds and wintering grounds. During feeding periods, it is mainly distributed in warm water control areas or marginal areas of warm water areas. The western part of Dasha fishery is the largest feeding ground for Larimichthys polyactis in the east Yellow Sea. At present, the research on Larimichthys polyactis populations at home and abroad mainly focuses on juveniles and juvenile populations, mixed feeding populations, and adult overwintering populations. There are few related studies on juvenile feeding populations alone. Generalized additive model(GAM) is a non-parametric generalized multiple linear regression method proposed by HASTIE. It can flexibly describe the response of species to environmental factors and predict the relationship between multiple independent variables and dependent variables, and can well analyze the relationship between fishery resources and multiple environmental factors in fisheries.In order to understand the spatial distribution characteristics of Larimichthys polyactis juveniles,a survey was conducted in the southern Yel

关 键 词：小黄鱼幼鱼 广义可加模型 环境因子 黄海南部 

分 类 号：S931[农业科学—渔业资源]