上海海洋大学学报2024，Vol.33Issue(1)：202-210,9.DOI:10.12024/jsou.20230304132
基于稳定同位素的江苏近海金乌贼摄食生态分析
Feeding ecology of Sepia esculenta in Jiangsu coastal waters based on stable isotopes analysis
摘要
Abstract
In order to further understand the characteristics of the life history of the Sepia esculenta population in the coastal waters of Jiangsu,the feeding ecology and nutritional niche of the Sepia esculenta were studied by using the carbon and nitrogen stable isotope analysis method based on the samples collected in the coastal ports of Jiangsu.The results showed that there was no significant difference in δ13C and 815N values between male and female populations of Sepia esculenta;There was a significant correlation between them;the nutritional niche width of male Sepia esculenta(SEAc=0.57‰2)was not significantly different from that of females(SE Ac=0.63‰2),and females were slightly larger than males,and both are highly overlapping(0.62).Isotopic cluster analysis showed that Sepia esculenta individuals could be divided into three mantle length groups of 75-114 mm,115-184 mm and 185-204mm;The niche width of the 114 mm mantle length group was the smallest(SEAc=0.39‰2);only the niche overlap rate between the 75-114 mm and 115-184 mm mantle length groups was moderate(0.34),and the niche overlap rate among the other mantle length groups was low.According to the analysis,the change of δ13C value of Sepia esculenta was mainly affected by the isotope baseline value and the migration pattern of Sepia esculenta,while the change of 615N value was mainly affected by the feeding effect of Sepia esculenta;the height of food resources and habitat utilization between female and male golden squid groups were highly similar;Sepia esculenta at different developmental stages had obvious differences in nutritional niche.关键词
金乌贼/江苏近海/稳定同位素/营养生态位Key words
Sepia esculenta/coastal waters of Jiangsu/stable isotope/nutritional niche分类
农业科技引用本文复制引用
周敏华,张虎,刘必林..基于稳定同位素的江苏近海金乌贼摄食生态分析[J].上海海洋大学学报,2024,33(1):202-210,9.基金项目
2022年度江苏省农业生态保护与资源利用专项-渔业生态与资源监测(2022-SJ-061-01) （2022-SJ-061-01）
2021年度江苏省农业生态保护与资源利用专项-渔业生态与资源监测(2021-SJ-110-02) （2021-SJ-110-02）
