上海海洋大学学报2024，Vol.33Issue(4)：868-877,10.DOI:10.12024/jsou.20240304442
西北太平洋公海柔鱼和日本爪乌贼个体发育期营养生态位变化分析
Analysis of trophic niche changes during the individual developmental period of Ommastrephes bartramii and Onychoteuthis borealijaponicus in the high sea of Northwest Pacific Ocean
摘要
Abstract
In order to better understand the nutritional niche changes during the ontogeny period of Ommastrephes bartramii and Onychoteuthis borealijaponicus,36 O.bartramii and 30 O.borealijaponicus samples were collected from"Songhang"fishery resources survey ship in 2021-2022,and stable isotopic analysis was conducted on their eye crystals.The results show that:the variation in individual δ13C and δ15N values for O.bartramii ranged from 0.10‰ to 1.68‰ and 0.79‰ to 7.51‰,respectively;and the variation in individual δ13C and δ15N values for O.borealijaponicus ranged from 0.15‰ to 1.20‰ and 0.81‰ to 7.05‰,respectively.The niche area change range for O.bartramii and O.borealijaponicus was 0.40‰2-5.85‰2 and 0.27‰2-5.36‰2,respectively.GAM model analysis showed that the δ13C and δ15N values of O.bartramii eye crystals had a significant correlation with crystal diameter,with deviation interpretation rates of 31.9％and 34.3％,respectively.Similarly,the δ13C and δ15N values of O.borealijaponicus eye crystals were significantly correlated with crystal diameter,with deviation interpretation rates of 12.9％and 19.4％,respectively.According to the analysis,O.bartramii and O.borealijaponicus feeding flexibility is responsible for the irregular change of δ13C and δ15N values with increasing carcass size.The larger magnitude of individual isotopic changes reflects the greater magnitude of baseline isotopic values in the Kuroshio-Oyashio transition zone in Northwest Pacific Ocean.Additional 83％of the O.bartramii samples and 80％of the O.borealijaponicus samples niche amplitude of δ13C was small,but niche amplitude of δ15N was larger,so the feeding level of O.bartramii and O.borealijaponicus in this area is different.The GAM model showed that individual growth and baseline values were factors affecting the tissue δ13C and δ15N values.关键词
西北太平洋/柔鱼/日本爪乌贼/眼睛晶体/碳氮稳定同位素/GAM模型Key words
Northwest Pacific Ocean/Ommastrephes bartramii/Onychoteuthis borealijaponicus/eye crystal/carbon and nitrogen stable isotopes/GAM model分类
农业科技引用本文复制引用
刘必林,刘庭羽,宋林玮..西北太平洋公海柔鱼和日本爪乌贼个体发育期营养生态位变化分析[J].上海海洋大学学报,2024,33(4):868-877,10.基金项目
上海市高校特聘教授"东方学者"岗位跟踪计划(GZ2022011) （GZ2022011）
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-8025-23-1002) （公海渔业资源综合科学调查）
