摘要
根据2016—2018年3月初(冬季)、5月(春季)、8月(夏季)、11月(秋季)4个季节在浙江南部近海的温台地区底拖网调查数据,通过构建广义线性模型(GLM)和9个线性混合效应模型,对镰鲳(Pampus echinogaster)的叉长-体质量关系(W=aLb)及其异质性进行了分析。结果表明:浙江南部近海的镰鲳叉长范围为53.00~238.00 mm,平均叉长128.54 mm,优势叉长组为110.00~160.00 mm;体质量范围为3.80~420.50 g,平均体质量63.61 g,优势体质量为60.00~180.00 g。根据赤池信息准则(AIC),最佳的生长拟合模型为同时存在季节和年份对镰鲳生长参数a,b的随机效应的组合模型;均方根误差结果同样表明该模型的性能最优。在最优模型中,参数a的固定值为1.75×10^(-5),参数b的固定值为3.083,表示镰鲳为正异速增长,肥满度较高。最优线性混合模型结果显示:a值在秋季最大,其次是夏季和冬季,而春季最小;b值与其相反。从不同年份来看:a值在2016年最大,2018年和2017年次之;b值在2017年最大,2018年和2016年次之。本研究分析了年份、季节与镰鲳的叉长-体质量关系,通过混合效应模型,显示出年份和季节对镰鲳的叉长-体质量关系具有较为显著的影响,表明该模型在镰鲳的叉长-体质量关系的异质性研究中具有重要的参考价值,并为其资源的合理开发和管理提供科学依据。
This study is conducted based on the bottom trawl surveys in the Wenzhou-Taizhou area,off the waters of the southern Zhejiang.Survey data were collected from 2016-2018 in all four seasons:Early March(winter),May(spring),August(summer),and November(autumn).The generalized linear model(GLM)and 9 linear mixed-effect models(LMEM)were used to analyze the fork length-mass relationship(W=aLb)and its heterogeneity for Pampus echinogaster.The results showed that the fork length of Pampus echinogaster in this region was from 53.00 mm to 238.00 mm,with an average fork length of 128.54 mm.The dominant fork length group was from 110.00 mm to 160.00 mm.The mass range was from 3.80 g to 420.50 g,with an average mass of 63.61 g.The dominant body mass group was from 60.00 g to 180.00 g.According to the Akaike Information Criterion(AIC),the best fitting model was the model with a combination of both seasonal and yearly random effects on the growth parameters a and b of Pampus echinogaster.The root-mean-square error results also showed that this model had the best effect.In the optimal model,the fixed value of parameter a was 1.75×10^(-5),and the fixed value of parameter b was 3.083,which indicates that Pampus echinogaster follows a positive allometric growth and presents better condition.The results of the optimal linear mixed model showed that the largest value of a was recorded in autumn,followed by summer and winter,and the smallest in spring;opposite trend was obtained for parameter b.From different years,the value of a was the largest in 2016,followed by 2018 and 2017;the value of b was the largest in 2017,followed by 2018 and 2016.The annual and seasonal impact on the fork length-mass relationship of Pampus echinogaster is analyzed through the mixed effect model.It shows that the year and the season have significant effects on the fork length-mass relationship of Pampus echinogaster,and that the model has important reference value in the study of the heterogeneity for the fork length-mass relationship of Pampuse chinogaster
作者
王杨楠
韩东燕
麻秋云
高春霞
田思泉
唐久
WANG Yangnan;HAN Dongyan;MA Qiuyun;GAO Chunxia;TIAN Siquan;TANG Jiu(College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China;National Engineering Research Center for Oceanic Fisheries,Shanghai 201306,China;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources,Ministry of Education,Shanghai 201306,Chirui;Zhejiang Mariculture Research Institute,Wenzhou 325000,Zhejiang,China)
出处
《上海海洋大学学报》
CAS
CSCD
北大核心
2021年第1期135-143,共9页
Journal of Shanghai Ocean University
基金
国家自然科学基金(41906074,31902372)
中国博士后科学基金(2019M651475)
温台地区海洋渔业资源调查项目(158053)。
关键词
浙江南部近海
镰鲳
叉长-体质量关系
异质性
线性混合效应模型
offshore waters of southern Zhejiang
Pampus echinogaster
fork length-mass relationship
heterogeneity
linear mixed-effect model
