基于现场胃含物测定人工养殖条件下中华鲟幼鲟生态转换效率

doi:10.13292/j.1000-4890.202506.001

生态学杂志 ›› 2025, Vol. 44 ›› Issue (6): 2083-2088.doi: 10.13292/j.1000-4890.202506.001

基于现场胃含物测定人工养殖条件下中华鲟幼鲟生态转换效率

李雅洁¹,郑跃平²,冯广朋^1*,朱佳志³

（¹中国水产科学研究院东海水产研究所，上海 200090； ²上海市水生野生动植物保护研究中心，上海 200092； ³三峡工程鱼类资源保护湖北省重点实验室，中国长江三峡集团有限公司中华鲟研究所，湖北宜昌 443100）

出版日期:2025-06-10 发布日期:2025-06-11

Determination of the ecological conversion efficiency of juvenile Acipenser sinensis under captive breeding conditions based on in situ stomach contents.

LI Yajie¹, ZHENG Yueping², FENG Guangpeng^1*, ZHU Jiazhi³

(¹East China Sea Fisheries Research Institute, China Academy of Fishery Sciences, Shanghai 200090, China; ²Shanghai Aquatic Wildlife Conservation and Research Center, Shanghai 200092, China; ³Hubei Key Laboratory of Three Gorges Project for Conservation of Fishes, Chinese Sturgeon Research Institute, China Three Gorges Corporation, Yichang 443100, Hubei, China).

Online:2025-06-10 Published:2025-06-11

摘要/Abstract

摘要： 中华鲟（Acipenser sinensis）对长江水生态保护和修复具有标志性意义。为探究中华鲟生态转换效率以及摄食生长规律，本研究利用中华鲟现场胃含物测定其生态转换效率，并通过测定摄食规律与生长变化计算中华鲟胃排空模型。结果表明：中华鲟摄食节律呈波动式下降；胃排空率可以用平方根模型y_0.5=2.8415-0.063t表示，胃排空率R_t=0.063 g·(100 g·h)^-1；根据Eggers公式求得平均日摄食量C_d=29.09±17.49 g·(100 g·d)^-1；中华鲟的体重随时间变化可用方程W_t=3.8873t+16.945(R²=0.9897)表示，求得平均日生长量G_d=77.20 g·(100 g·d)^-1；通过已知的平均日生长量和平均日摄食量，求得中华鲟生态转换效率为E_g=37.7%，处于较高水平，摄食主要转换为体重生长。研究结果可为中华鲟高效驯养、系统保护和食物网能量流动评估提供参考。

关键词: 中华鲟, 胃排空率, 生态转换效率

Abstract: Acipenser sinensis has symbolic significance for ecological protection and restoration of Yangtze River. To explore the ecological conversion efficiency, feeding and growth patterns, we used the stomach contents of A. sinensis to determine the ecological conversion efficiency, and further measured feeding and growth patterns to calculate the gastric emptying model of A. sinensis. The results showed that the feeding rhythm of A. sinensis displayed a fluctuating decline. The gastric emptying rate could be expressed by a square root model y_0.5=2.8415-0.063t. The gastric emptying rate was R_t=0.063 g·(100 g·h)^-1. The average daily feed intake C_d=29.09±17.49 g·(100 g·d)^-1 was obtained according to the Eggers’ formula. The change of body weight over time could be calculated by the equation W_t=3.8873t+16.945 (R²=0.9897), and the equation of average daily growth was G_d=77.20 g·(100 g·d)^-1. Based on the known average daily growth and average daily food intake, the ecological conversion efficiency of A. sinensis was E_g=37.7% with a high level, and feeding was mainly converted to weight growth. These results can provide a reference for the efficient domestication and systematic protection of A. sinensis, and the evaluation of the energy flow of food web.

Key words: Acipenser sinensis, gastric evacuation rate, ecological conversion efficiency

李雅洁, 郑跃平, 冯广朋, 朱佳志. 基于现场胃含物测定人工养殖条件下中华鲟幼鲟生态转换效率[J]. 生态学杂志, 2025, 44(6): 2083-2088.

LI Yajie, ZHENG Yueping, FENG Guangpeng, ZHU Jiazhi. Determination of the ecological conversion efficiency of juvenile Acipenser sinensis under captive breeding conditions based on in situ stomach contents.[J]. Chinese Journal of Ecology, 2025, 44(6): 2083-2088.

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基于现场胃含物测定人工养殖条件下中华鲟幼鲟生态转换效率

Determination of the ecological conversion efficiency of juvenile Acipenser sinensis under captive breeding conditions based on in situ stomach contents.

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