中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 东、黄海凤鲚的食物组成及其食性的季节变化 海洋渔业 2014,36 (5) 402-408
Position: Home > Articles > Food composition and seasonal changes of Coilia mystus in the East China Sea and Yellow Sea Marine Fisheries 2014,36 (5) 402-408

东、黄海凤鲚的食物组成及其食性的季节变化

作  者：
郭爱;陈峰;金海卫;周永东;朱文斌
单  位：
农业部重点渔场渔业资源科学观测实验站;浙江省海洋渔业资源可持续利用技术研究重点实验室;国家海洋局第二海洋研究所;浙江省海洋水产研究所;上海海洋大学海洋科学学院
关键词：
凤鲚;季节变化;食物组成;摄食强度;食物多样性指数
摘  要：
根据东海区(26°00'~35°00'N、120°00'~126°30'E)大面调查渔获物的凤鲚(Coilia mystus)样本,对东、黄海凤鲚的食物组成、食性类型及其季节变化进行了定量分析。研究结果表明:(1)凤鲚饵料生物组成共计有10个类群,40种可鉴别饵料(包括未鉴定到种的种类),6种不可辨认类型饵料。依据相对重要性指数指标计算结果分析,桡足类(Copepoda)为最重要的饵料类群,IRI达到1 869,%IRI占56%,糠虾类(Mysidacea)、磷虾类(Euphausiacea)为次重要类群。(2)凤鲚摄食的浮游动物饵料出现频率达93.66%,底栖动物和游泳动物出现频率分别为0.66%、5.68%,属于浮游动物食性。(3)凤鲚的食物组成、摄食强度、食物生态位宽度均存在季节变化,春、夏、秋、冬四季摄食的饵料种类依次为35种、29种、10种和9种,春季主要摄食桡足类、鱼类和糠虾类,夏季主要摄食糠虾类和桡足类,秋季主要摄食桡足类和磷虾类,而冬季则主要摄食磷虾类和桡足类,各季中优势的单一类群%IRI均超过85%。凤鲚摄食等级较低,摄食等级3级以下四季都在70%以上,空胃率较高,秋季空胃率高达59.7%,平均胃饱满系数春季最高,冬季最低。春季相对其它季节摄食等级较高、空胃率最低、平均胃饱满系数最高,摄食强度明显高于其它季节。春、夏季节的食物多样性指数高于秋、冬季节。
译  名：
Food composition and seasonal changes of Coilia mystus in the East China Sea and Yellow Sea
作  者：
GUO Ai;CHEN Feng;JIN Hai-wei;ZHOU Yong-dong;ZHU Wen-bin;Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province,Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds,Ministry of Agriculture,Marine Fishery Institute of Zhejiang Province;College of Marine Science and Technology,Shanghai Ocean University;The Second Institute of Oceanography,SOA;
关键词：
Coilia mystus;;seasonal variation;;food composition;;feeding intensity;;food diversity index
摘  要：
The food composition,type and seasonal variations of Coilia mystus in the East China Sea and southern Yellow Sea were quantitatively analyzed based on samples collected from surveys in the study area26°00'- 35°00'N and 120°00'- 126°30'E. Results showed that:( 1) Food of Coilia mystus was composed of40 species in 10 taxa and 6 unidentifiable species. According to the index of relative importance,Copepoda was the most important food taxon with the IRI 1 869 and % IRI 56%. Mysidacea and Euphausiacea were the second important food taxa;( 2) Coilia mystus mainly fed on zooplankton. Occurrence frequencies of zooplanktons,nektons and zoobenthos in the diet of Coilia mystus were 93. 66%,5. 68% and 0. 66%,respectively;( 3) Food composition,feeding intensity and food niche breadth varied in different seasons.Species numbers of the diet were 35,29,10 and 9 in spring,summer,autumn and winter,respectively.Coilia mystus mainly fed on Copepoda,fishes and Mysidacea in spring,Mysidacea and Copepoda in summer,Copepoda and Euphausiacea in autumn and winter. The % IRI of the dominant species in every season was higher than 85%. The feeding level of Coilia mystus was relatively low,which was lower than level three in more than 70% individuals in all four seasons. The empty stomach rate of Coilia mystus was relatively high,which was 59. 7% in autumn. The mean value of stomach fullness index was the highest in spring and the lowest in winter. In spring,the feeding level was the highest,the empty stomach rate was the lowest,the mean stomach fullness index was the highest,and the feeding intensity was significantly higher than that of other seasons. The food diversity index was higher in spring and summer than that of autumn and winter.

相似文章

导出引用
计量
文章访问数: 10
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46