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| 东海渔山列岛浅海岩礁区大型消费者食源及营养级分析 |
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刘好真1, 郑丹1,2, 焦海峰2, 王莉1, 徐鹏1, 史西志1, 王一农1, 尤仲杰1,2
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1.宁波大学海洋学院 宁波 315211;2.宁波市海洋与渔业研究院 宁波 315103
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| 摘要: |
| 采用碳氮稳定性同位素技术分析了东海渔山列岛浅海岩礁区生物的碳氮稳定性同位素比值，研究了浅海岩礁区14种初级生产者、61种消费者的营养级。结果表明，东海渔山列岛浅海岩礁区消费者的营养级（TL）变化范围为2.000-4.760，推断东海渔山列岛浅海岩礁区生物有4个营养级；初级生产者δ15N值变化范围为2.75‰-6.85‰，消费者δ15N值变化范围为4.57‰-13.39‰；通过对不同生物δ15N值的比较发现，各类别生物间的δ15N值差异高度显著（P<0.01），短滨螺（Littorina brevicula）的δ15N值最低（4.57‰），中国花鲈（Lateolabrax maculatum）和黑鲷（Acanthopagrus schlegelii）的δ15N值最大，分别为11.87‰和13.39‰；单因素方差分析（One-Way ANOVA）表明4类食源间δ15N和δ13C值差异高度显著（P<0.01）；食源分析表明，鱼类的贡献范围（0.00%-7.09%）最小，初级生产者的贡献范围（27.05%-57.99%）最大；比较发现不同海域同一种生物体内富集的15N量也存在差异，这也从一个侧面反映出不同海域间生物的群落结构和稳定性存在差异。 |
| 关键词: 东海 渔山列岛 浅海岩礁区 稳定性同位素 食源 营养级 |
| DOI：10.11693/hyhz20170300059 |
| 分类号: |
| 基金项目:公益性行业（农业）科研专项，201303047号；国家自然科学基金项目，31671097号；宁波市科技局攻关项目，2014C10018号；浙江省公益性项目，2016C33090号；宁波大学研究生科研创新基金项目，G17110号。 |
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| FOOD SOURCE AND TROPHIC LEVEL OF LARGE CONSUMERS IN ROCKY COASTAL WATERS OFF YUSHAN ISLANDS IN THE EAST CHINA SEA |
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LIU Hao-Zhen1, ZHENG Dan1,2, JIAO Hai-Feng2, WANG Li1, XU Peng1, SHI Xi-Zhi1, WANG Yi-Nong1, YOU Zhong-Jie1,2
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1.School of Marine Science, Ningbo University, Ningbo 315211, China;2.Ningbo Academy of Oceanology and Fisheries, Ningbo 315103, China
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| Abstract: |
| To understand the food source and trophic level of large consumers in rocky coastal waters off Yushan Islands, the East China Sea, Zhejiang, we analyzed the stable carbon and nitrogen isotope ratio in local rocky organisms using stable isotope technique. Fourteen primary producers and 61 consumers were selected. The results showed that the trophic level ranged 2.000-4.760, of which four trophic levels could be recognized. The variation range of δ15N value for primary producers was 2.75‰-6.85‰, and consumers 4.57‰-13.39‰. The δ15N values of different organisms varied significantly (P<0.01), from 4.57‰ in Littorina brevicula to 11.87‰ in Lateolabrax maculatum and 13.39‰ in black porgy Acanthopagrus schlegelii. The food sources in the region could be divided into four groups. The range of fish contribution was the smallest (0.00%-7.09%), and that of primary producers was the largest (27.05%-57.99%). In addition, 15N enrichment in the same species in different sea areas varied, reflecting differences in structure and stability of local communities among the parts of the study area. |
| Key words: East China Sea Yushan Islands rocky coastal waters stability isotope food source trophic level |