基于胃含物和碳、氮稳定同位素研究浙江南部近海蓝圆鲹的摄食生态

doi:10.13287/j.1001-9332.202212.029

应用生态学报 ›› 2022, Vol. 33 ›› Issue (11): 3097-3104.doi: 10.13287/j.1001-9332.202212.029

基于胃含物和碳、氮稳定同位素研究浙江南部近海蓝圆鲹的摄食生态

徐雯^1,2,3, 杨蕊^1,2,3, 陈淦^1,2,3, 高春霞^1,2,3, 叶深^4,5, 韩东燕^1,2,3*

¹上海海洋大学海洋科学学院, 上海 201306;
²国家远洋渔业工程技术研究中心, 上海 201306;
³大洋渔业资源可持续开发教育部重点实验室, 上海 201306;
⁴浙江省海洋水产养殖研究所, 浙江温州 325005;
⁵浙江省近岸水域生物资源开发与保护重点实验室, 浙江温州 325005

收稿日期:2021-10-12 修回日期:2022-04-20 出版日期:2022-11-15 发布日期:2023-05-15
通讯作者: *E-mail: dyhan@shou.edu.cn
作者简介:徐雯, 女, 1997年生, 硕士研究生。主要从事鱼类摄食生态研究。E-mail: xu_wen1219@163.com
基金资助:
国家自然科学基金项目(41906074,31902372)

Feeding ecology of Decapterus maruadsi in the southern coastal area of Zhejiang based on stomach contents and stable isotope analysis.

XU Wen^1,2,3, YANG Rui^1,2,3, CHEN Gan^1,2,3, GAO Chun-xia^1,2,3, YE Shen^4,5, HAN Dong-yan^1,2,3*

¹College of Marine Science, Shanghai Ocean University, Shanghai 201306, China;
²National Distant-water Fisheries Engineering Research Center, Shanghai 201306, China;
³National Data Centre for Distant-Water Fisheries of China, Shanghai 201306, China;
⁴Zhejiang Maricultural Research Institute, Wenzhou 325005, Zhejiang, China;
⁵Zhejiang Key Laboratory of Exploitation and Preservation of Offshore Bio-resource, Wenzhou 325005, Zhejiang, China

Received:2021-10-12 Revised:2022-04-20 Online:2022-11-15 Published:2023-05-15

摘要/Abstract

摘要： 蓝圆鲹是浙江南部近海的重要经济鱼类。本文根据2020年5月、8月、11月和2021年1月在浙江南部近海进行的底拖网调查,应用胃含物分析和碳氮稳定同位素分析对浙江南部近海蓝圆鲹的摄食习性进行研究。结果表明: 浙江南部近海蓝圆鲹δ¹³C平均值为(-16.55±0.60)‰,范围为-17.76‰～-15.25‰,与叉长呈显著负相关;蓝圆鲹δ¹⁵N平均值为(11.76±0.88)‰,范围为9.06‰～13.03‰,与叉长呈显著正相关。根据δ¹⁵N值计算浙江南部近海蓝圆鲹的平均营养级为3.89±0.26。胃含物分析表明,浙江南部近海蓝圆鲹的主要饵料类群为鱼类、虾类、蟹类、头足类、多毛类和小型甲壳类。稳定同位素分析表明,虾类对浙江南部近海蓝圆鲹的营养贡献率最高(40%～84%),其次为多毛类、小型甲壳类、蟹类、头足类和鱼类。蓝圆鲹的摄食习性有明显的生长变化,随着蓝圆鲹叉长的增加,其倾向于摄食更高营养级的饵料生物。

关键词: 胃含物分析, 稳定同位素分析, 摄食生态, 蓝圆鲹, 营养级

Abstract: Decapterus maruadsi is an important economic pelagic fish in the southern coastal area of Zhejiang. According to the bottom trawl surveys conducted in May, August, November 2020 and January 2021, the feeding habits of D. maruadsi in the southern coastal area of Zhejiang were examined by both stable isotope (carbon, δ¹³C, and nitrogen, δ¹⁵N) and stomach content analyses. Results showed that the δ¹³C value of D. maruadsi ranged from -17.76‰ to -15.25‰, with a mean of (-16.55±0.60)‰, while the δ¹⁵N value ranged from 9.06‰ and 13.03‰, with a mean of (11.76±0.88)‰. There was a significant negative correlation between the δ¹³C values and fork length, and a positive relationship between the δ¹⁵N with fork length. Results from stomach content analysis showed that the main prey groups of D. maruadsi were fish, shrimp, crabs, Cephalopod, Polychaete, and small crustaceans. As for the stable isotope analysis, the nutritional contribution rate of shrimp was the highest (40%-84%) among all prey groups, followed by Polychaete, small crustaceans, crabs, Cephalopods and fish. Significant ontogenetic dietary changes were found for D. maruadsi. As the fork length of D. maruadsi increased, it tended to eat prey from higher trophic levels.

Key words: stomach content analysis, stable isotope, feeding habit, Decapterus maruadsi, trophic level

徐雯, 杨蕊, 陈淦, 高春霞, 叶深, 韩东燕. 基于胃含物和碳、氮稳定同位素研究浙江南部近海蓝圆鲹的摄食生态[J]. 应用生态学报, 2022, 33(11): 3097-3104.

XU Wen, YANG Rui, CHEN Gan, GAO Chun-xia, YE Shen, HAN Dong-yan. Feeding ecology of Decapterus maruadsi in the southern coastal area of Zhejiang based on stomach contents and stable isotope analysis.[J]. Chinese Journal of Applied Ecology, 2022, 33(11): 3097-3104.

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基于胃含物和碳、氮稳定同位素研究浙江南部近海蓝圆鲹的摄食生态

Feeding ecology of Decapterus maruadsi in the southern coastal area of Zhejiang based on stomach contents and stable isotope analysis.

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