影响太平洋褶柔鱼冬生群资源丰度的表温因子及其机理分析  

Mechanisms analysis of the stock abundance index for the winter-spawning cohort of Todarodes pacificus based on the factor of SST

作　　者：鲁红月 陈新军[1,2,3,4] LU Hongyue;CHEN Xinjun(College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources,Ministry of Education,Shanghai 201306,China;National Engineering Research Center for Oceanic Fisheries,Shanghai 201306,China;Key Laboratory of Oceanic Fisheries Exploration,Ministry of Agriculture and Rural Affairs,Shanghai 201306,China)

机构地区：[1]上海海洋大学海洋科学学院,上海201306 [2]大洋渔业资源可持续开发教育部重点实验室,上海201306 [3]国家远洋渔业工程技术研究中心,上海201306 [4]农业农村部大洋渔业开发重点实验室,上海201306

出　　处：《上海海洋大学学报》2022年第2期534-541,共8页Journal of Shanghai Ocean University

基　　金：国家重点研发计划(2019YFD0901404);国家自然科学基金(41876141);上海市科技创新行动计划(10DZ1207500)。

摘　　要：根据1998—2018年太平洋褶柔鱼冬生群体单位捕捞努力量渔获量(catch per unit effort, CPUE)、1—3月产卵期间产卵场(25°N~40°N和125°E~145°E)和6—7月索饵期索饵场(26°N~40°N和125°E~145°E)的海表面温度(sea surface temperature, SST),采用广义线性模型分析获得影响CPUE的SST值,并对连续高值年份(2007、2008、2009)和连续低值年份(2016、2017、2018)的CPUE和获得的影响因子SST进行空间叠加分析。结果表明:CPUE与产卵场1—3月SST显著相关的月份为1月(25°N~40°N和125°E~145°E),该海区SST最适温度范围为18~26℃;CPUE与索饵场6—7月SST显著相关的月份为7月(27°N~39.5°N和125°E~144.5°E),该海区SST最适温度范围为18~28℃;CPUE连续高值年份的SST要低于连续低值年份。研究认为,太平洋褶柔鱼冬生群资源丰度受产卵场和索饵场的SST影响较显著,而黑潮实力强弱也是间接影响资源丰度的主要原因之一。Understanding and mastering the environmental factors that affect the resource abundance of the winter-spawning cohort of Todarodes pacificus are of great significance to the development of fishery forecasts and fishery resource assessment and management.In this study, Sea Surface Temperature(SST) was used to measure the catch per unit effort(CPUE) of the winter-spawning cohort of Todarodes pacificus from 1998 to 2018, the spawning ground(25°N-40°N and 125°E-145°E) during the spawning period from January to March, and the feeding ground(26°N-40°N and 125°E-145°E) during the feeding period from June to July, the SST value affecting CPUE was obtained by generalized linear model analysis, and we made the spatial overlay analysis of the CPUE and the obtained influence factor SST in consecutive high-value years(2007, 2008, 2009) and consecutive low-value years(2016, 2017, 2018).The results showed that CPUE and spawning ground SST from January to March were significantly related to January(25°N-40°N and 125°E-144.5°E),and the optimal range of SST in this sea area was 18-26 ℃. The significant correlation between CPUE and SST in June and July was mainly concentrated in July(27°N-39.5° N and 125°E-144.5°E), and the optimal range of SST in this sea area was 18-28 ℃,the SST of consecutive high value CPUE years was lower than that of consecutive low value years. The study suggests that the stock abundance of the winter-spawning cohort of Todarodes pacificus was significantly affected by SST.

关 键 词：太平洋褶柔鱼 冬生群 资源丰度 海表面温度 

分 类 号：S931.3[农业科学—渔业资源]