水产学报2018，Vol.42Issue(6)：870-880,11.DOI:10.11964/jfc.20170710899
黄海大头鳕0龄幼体分布及其与环境因子的关系
Distribution of the age 0 group Pacific cod ( Gadus macrocephalus) in the Yellow Sea and its relationship with environmental factors
摘要
Abstract
Pacific cod Gadus macrocephalus is distributed around the rim of the North Pacific Ocean, and it’s con-sidered as an ecologically important species. Studies on the biological characteristics and distribution patterns of juvenile Pacific cod would be helpful to understand cod population dynamics. Based on the data collected during the fishery resources surveys carried out in June, August, October and December 2016, the growth of the age 0 group Pacific cod in the Yellow Sea was studied, and the generalized additive model (GAM) was used to analyze the distribution characteristics and their relationship with environmental factors of the age 0 group Pacific cod. The results showed that the age 0 Pacific cod was allometric. Growth rate of the body weight was not equal to the body length, and the weight gain was faster. Allometric factor b was 3.3161. The age 0 group Pacific cods in the Yellow Sea were distributed in the waters in bottom salinity range of 31.7 to 33.3, in bottom water temperature range from 6.6 to 12.1 °C and in depth range of 35.8 to 87.2 m. The favorite sediment in the nursery habitats was fine silty sand and soft clay mud. The seasonal variation in the distribution pattern of the age 0 group Pacific cod was syn-chronized with the seasonal variation of the Yellow Sea cold water mass. The environmental factors which had sig-nificant effects on the ecological density of the cod juvenile were in the order of bottom water temperature, sedi-ment and bottom salinity,while the depth had no significant influence on the juvenile density.关键词
大头鳕/生长/分布特征/环境因子/广义可加模型Key words
Gadus macrocephalus/growth/distribution patterns/environmental factors/generalized additive model(GAM)分类
农业科技引用本文复制引用
张人元,卞晓东,单秀娟,金显仕,关丽莎..黄海大头鳕0龄幼体分布及其与环境因子的关系[J].水产学报,2018,42(6):870-880,11.基金项目
国家重点基础研究发展计划(2015CB453302) （2015CB453302）
国家自然科学基金(41506168) （41506168）
山东省泰山学者专项基金 National Basic Research Program of China(2015CB453302) （2015CB453302）
National Natural Science Found-ation of China(41506168) （41506168）
Special Funds for Taishan Scholar Project of Shandong Province （）
