| 鄱阳湖同时存在溯河洄游和淡水定居的刀鲚 |
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| 引用本文： | 姜涛,周昕期,刘洪波,刘焕章,杨健.鄱阳湖同时存在溯河洄游和淡水定居的刀鲚[J].水产学报,2013,37(2):239-244. |
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| 作者姓名： | 姜涛 周昕期 刘洪波 刘焕章 杨健 |
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| 作者单位： | 南京农业大学无锡渔业学院;;上海海洋大学;中国水产科学研究院淡水渔业研究中心,;中国水产科学研究院淡水渔业研究中心,上海海洋大学,中国水产科学研究院淡水渔业研究中心,;中国水产科学研究院淡水渔业研究中心,中国科学院水生生物研究所,南京农业大学无锡渔业学院 |
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| 基金项目： | (30871920)；中国水产科学研究院基本科研业务费专项课题(2012A0201)通讯作者：杨健,E-mail：jiany@ffrc.cn ,周昕期2,刘洪波3,刘焕章4,杨健1,3* |
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| 摘 要： | 为确认鄱阳湖中是否仍存在有溯河洄游的刀鲚个体,利用X射线电子探针微区分析技术(EPMA)研究了采自鄱阳湖星子县水域2尾刀鲚个体矢耳石的锶和钙微化学特征。定量线分析结果显示,上颌骨较短个体(PYCB02)的耳石锶钙比值(即Sr/Ca×1 000)为稳定的低值(1.66±0.54),反映了其淡水定居的生活习性;而上颌骨较长个体(PYCE05)的锶钙比值波动显著,不仅具有对应淡水生活的低值(1.82±0.50),而且出现了对应于海水生活的高值(5.79±0.91),显示出其溯河洄游的"履历"。这些结果更得到了耳石元素面分布分析结果的支持。这两种截然不同的耳石微化学特征类型首次直观地反映和证实了目前距长江河口约800 km的鄱阳湖中同时存在有溯河洄游和淡水定居的两类刀鲚个体。
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| 关 键 词： | 刀鲚 耳石 电子探针 鄱阳湖 |
| 收稿时间： | 5/4/2012 12:00:00 AM |
| 修稿时间： | 2012/11/26 0:00:00 |
Coexistence of resident and anadromous Coilia nasus in the Poyang Lake |
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| JIANG Tao,ZHOU Xin-qi,LIU Hong-bo,LIU Huan-zhang and YANG Jian.Coexistence of resident and anadromous Coilia nasus in the Poyang Lake[J].Journal of Fisheries of China,2013,37(2):239-244. |
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| Authors: | JIANG Tao ZHOU Xin-qi LIU Hong-bo LIU Huan-zhang and YANG Jian |
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| Institution: | Wuxi Fisheries College,Nanjing Agricultural University;China;;College of Fisheries and Life Science,Shanghai Ocean University;China;;Key Laboratory of Ecological Environment And Resources of Inland Fisheries,Freshwater Fisheries Research Center,Chinese Academy of Fishery Sciences;China;,College of Fisheries and Life Science,Shanghai Ocean University,Key Laboratory of Ecological Environment And Resources of Inland Fisheries,Freshwater Fisheries Research Center,Chinese Academy of Fishery Sciences,Institute of Hydrobiology, the Chinese Academy of Science,Wuxi Fisheries College,Nanjing Agricultural University |
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| Abstract: | An electron probe microanalyzer was used to analyze the element Sr and Ca accumulation patterns in otoliths of two individuals of Coilia nasus from the Xingzi area in the Poyang Lake, China. Results of both the line transect and mapping analysis confirmed objectively, for the first time, the coexistence of resident and anadromous forms of Coilia nasus in the Poyang Lake. This fact will provide important information not only to more effectively evaluate and protect the resources of Coilia nasus, but also to rationally plan and guide future ecological economic development in the Poyang Lake. |
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| Keywords: | Coilia nasus Poyang Lake otolith electron probe microanalyzer |
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