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张志明,刘成杰,谢从新,王民.新疆额尔齐斯河银鲫食性分析[J].华中农业大学学报,2020,39(3):75-81
新疆额尔齐斯河银鲫食性分析
Feeding habits of Carassius auratus gibelio from Irtysh River in Xinjiang
投稿时间:2019-07-02  
DOI:
中文关键词:  银鲫  食性  摄食强度  食物组成  摄食策略  生态位  额尔齐斯河
英文关键词:Carassius auratus gibelio  food habit  feeding intensity  food composition  feeding strategy  ecological niche  Irtysh River 
基金项目:国家自然科学基金青年科学基金项目(31800391); 科技部基础性研究专项(2012 FY112700)
作者单位E-mail
张志明 水利部水工程生态效应与生态修复重点实验室/水利部中国科学院水工程生态研究所武汉 430079华中农业大学水产学院武汉430070 zhangzm@mail.ihe.ac.cn 
刘成杰 华中农业大学水产学院武汉430070  
谢从新 华中农业大学水产学院武汉430070 xiecongxin @mail.hzau.edu.cn 
王民 生态环境部环境工程评估中心北京 100012  
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中文摘要:
      以2013年4-10月在额尔齐斯河干流中国段下游采集的 546尾银鲫(Carassius auratus gibelio)样本为研究对象,对银鲫的食物组成、摄食强度、摄食时空变化以及摄食策略等进行系统的分析和研究。统计结果显示,银鲫总体的空肠率为28.17%,且在繁殖季节前期(5月)的空肠率(54.7%)显著高于其他月份。以食物出现率比较,硅藻(100%)及摇蚊幼虫(86.67%)在银鲫食物组成中比较常见;植物碎屑质量百分比(61.52%)、优势度指数(62.36%)均最高,此外,改进的Costello图示法也表明植物碎屑为银鲫的主要食物。Kruskal-Wallis检验结果显示,额尔齐斯河银鲫不同季节的食物组成具有显著性差异,不同体长组间食物组成差异不显著。以上结果表明,额尔齐斯河银鲫为杂食性,且偏于植物食性。
英文摘要:
      A total of 546 Carassius auratus gibelio were collected from the lower reaches of the main stream of Irtysh River in China from April to October,2013. The food composition,feeding intensity and spatiotemporal variation,and feeding strategy of C. auratus gibelio were systematically analyzed and studied. The statistical results indicated that the overall jejunum rate of C. auratus gibelio was 28.17%,and the rates of jejunum before breeding season (May,54.7%) were significantly higher than those in other months. For food occurrence rate,Bacillariophyta (100%),and Chironomus larvae (86.67%) were common in the food composition of C. auratus gibelio. The weight percentage (61.52%),dominance index (62.36%),and Amundsen figure indicated that the plant debris were the most important prey of C. auratus gibelio. In addition,the food composition of C. auratus gibelio showed significant differences amomg different seasons (P<0.05),whereas showed no significant difference among different length groups (P>0.05). These results showed that C. auratus gibelio in Irtysh River is omnivorous and partial to phytophagy.
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