上海海洋大学学报2024，Vol.33Issue(4)：946-959,14.DOI:10.12024/jsou.20240404475
菲律宾海夏季仔稚鱼表层分布及其与环境因子的关系
Surface distribution of fish larvae and juveniles and its relationship with environmental factors in the Philippine Sea in summer
摘要
Abstract
In order to investigate the relationship between the surface distribution of fish larvae and juveniles and environmental factors in the Philippine Sea in summer,surface horizontal trawl surveys were conducted with large larvae and juvenile fish nets(diameter 1.3 m,mesh 0.5 mm)at 50 sampling stations in the Philippine Sea(11°N-19°N,129°E-138°E)during the summer of 2022.A total of 38 159 fish larvae and juveniles,belonging to 14 orders,21 families,and 56 species were collected.The dominant species in the daytime collection were Thunnus albacares and Encrasicholina punctifer,while the dominant species in the nighttime collection was Encrasicholina punctifer,so the co-dominant species was Encrasicholina punctifer,which accounted for 97.05％of the total number of samples collected.The total mean density of fish larvae and juveniles at each station was 292.43 ind./1 000 m3,with a mean density of 17.61 ind./1 000 m3 collected during the daytime and 526.54 ind./1 000 m3 collected during the nighttime,indicating significant differences in diel distribution.The stations with higher densities were mainly located in the sea near 15° N,and all sample were collected at night.Canonical correlation analysis showed that the environmental factors affecting the distribution of fish larvae and juveniles were,in descending order,sea surface salinity,sea surface temperature,and dissolved oxygen.The distribution of the dominant species Encrasicholina punctifer was mainly influenced by sea surface salinity and dissolved oxygen.The study shows that the fish larvae and juveniles in the Philippine Sea have a rich species composition with uneven surface distribution and significant differences in diel distribution.This study can provide a scientific basis for the assessment,conservation and utilization of fishery resources in the Philippine Sea.关键词
仔稚鱼/种类组成/昼夜分布/菲律宾海Key words
fish larvae and juveniles/species composition/diel distribution/Philippine Sea分类
农业科技引用本文复制引用
吕莉欣,赵恒权,钟俊生,王晓东,叶旭昌,刘志良..菲律宾海夏季仔稚鱼表层分布及其与环境因子的关系[J].上海海洋大学学报,2024,33(4):946-959,14.基金项目
国家重点研发计划(2022YFC2804003) （2022YFC2804003）
农业农村部全球渔业资源调查监测评估(公海渔业资源综合科学调查)专项(D-8025-23-002) （公海渔业资源综合科学调查）
