热带海洋学报 ›› 2010, Vol. 29 ›› Issue (3): 87-92.doi: 10.11978/j.issn.1009-5470.2010.03.087

• 海洋生物学 • 上一篇    下一篇

不同升温速率对桡足类高起始致死温度的影响

江志兵1,3, 曾江宁1,2, 陈全震1, 廖一波1,3, 高爱根1, 徐晓群1, 寿鹿1,
刘晶晶1, 黄逸君1   

  1. 1. 国家海洋局海洋生态系统与生物地球化学重点实验室, 国家海洋局第二海洋研究所, 浙江 杭州, 310012; 2. 浙江大学环境与资源学院, 浙江 杭州, 310029; 3. 农业部海洋与河口渔业重点开放实验室, 上海, 200090
  • 收稿日期:2008-01-14 修回日期:2008-05-08 出版日期:2010-07-01 发布日期:2010-05-24
  • 通讯作者: 陈全震, 研究员。
  • 作者简介:江志兵(1983―), 男, 浙江省温岭市人, 研究实习员, 主要从事海洋生物研究, E-mail: jzb1217@126.com
  • 基金资助:

    国家重点基础研究发展计划(2010CB428903); 科技部社会公益研究专项资金项目(2004DIB3J087); 国家海洋局青年科学基金
    (2008113); 海洋公益性行业科研专项经费项目资助(200805069); 国家专项(908-02-04-0, 908-ZC-II-04); 国家海洋局专项(No.
    2011914); 国家海洋局第二海洋研究所基本科研业务费专项(JT0806, JG0921)

Effect of heating rate on the upper incipient lethal temperature for copepods

JIANG Zhi-bing1,3, ZENG Jiang-ning1,2, CHEN Quan-zhen1, LIAO Yi-bo1,3, GAO Ai-gen1, XU Xiao-qun1, SHOU Lu1, LIU Jing-jing1, HUANG Yi-jun1   

  1. 1. Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hang-zhou, 310012, China; 2. College of Environmental and Resource Science, Zhejiang University, Hangzhou 310029, China; 3. Key Laboratory of Marine and Estuarine and Fisheries, Ministry of Agriculture, Shanghai 200090, China
  • Received:2008-01-14 Revised:2008-05-08 Online:2010-07-01 Published:2010-05-24
  • Contact: 陈全震, 研究员。
  • About author:江志兵(1983―), 男, 浙江省温岭市人, 研究实习员, 主要从事海洋生物研究, E-mail: jzb1217@126.com
  • Supported by:

    国家重点基础研究发展计划(2010CB428903); 科技部社会公益研究专项资金项目(2004DIB3J087); 国家海洋局青年科学基金
    (2008113); 海洋公益性行业科研专项经费项目资助(200805069); 国家专项(908-02-04-0, 908-ZC-II-04); 国家海洋局专项(No.
    2011914); 国家海洋局第二海洋研究所基本科研业务费专项(JT0806, JG0921)

摘要:

为探明升温速率对桡足类热忍受能力的影响, 并找出一个相对合适的升温速率作为其高起始致死温度(upper incipient lethal temperature, UILT)试验中的标准升温速率, 研究了中华哲水蚤Calanus sinicus、真刺唇角水蚤Labidocera euchaeta、精致真刺水蚤Euchaeta concinna和背针胸刺水蚤Centropages dorsispinatus等4种桡足类在1℃•h-1、0.1℃•min-1、1℃•min-1和突然暴露等4个不同升温速率下的UILT。结果表明, 同一种桡足类在不同升温速率下的热忍受能力存在较大的差异, 各种桡足类的UILT均在升温速率为0.1℃•min?1时最大, 高于或低于该升温速率, 其UILT都降低。因此, 建议桡足类UILT实验的标准升温速率为0.1℃•min-1。在0.1℃•min-1的标准升温速率下, 各种桡足类的热忍受能力从强到弱依次为真刺唇角水蚤、背针胸刺水蚤、精致真刺水蚤、中华哲水蚤, 其24h-UILT分别为31.0℃、29.6℃、29.1℃和27.7℃, 48h-UILT分别为30.1℃、29.5℃、28.6℃和27.3℃, 各种桡足类的热忍受能力间均有显著差异。

关键词:  高起始致死温度 (UILT), 升温速率, 桡足类, 热忍受能力, 温排水

Abstract:

To explore how heating rate influences the thermal tolerance of copepods and to recommend heating rate criteria during copepod upper incipient lethal temperature (UILT) tests, four copepod species (Calanus sinicus, Labidocera euchaeta, Euchaeta concinna, Centropages dorsispinatus) collected from the Yueqing Bay were studied in laboratory under different heat-ing rates (1℃•h-1, 0.1℃•min-1, 1℃•min-1, and abrupt exposure). The results showed that thermal tolerance of the same copepod species varied with heating rate, and all the experimental copepods decreased in number from a heating rate of 0.1℃•min-1 to-wards quicker or slower heating rates. Thus, the rate of 0.1℃•min-1 was considered as the standard heating rate for UILT experi-ments. In the trial conducted at 0.1℃•min-1, the 24h-UILT of L. euchaeta, C. dorsispinatus, E. concinna and C. sinicus were 31.0℃, 29.6℃, 29.1℃ and 27.7℃, respectively; the 48h-UILT of L. euchaeta, C. dorsispinatus, E. concinna and C. sinicus were 30.1℃, 29.5℃, 28.6℃ and 27.3℃, respectively. Differences of thermal sensitivity between these animals were all significant.

Key words: upper incipient lethal temperature (UILT), heating rate, Calanus sinicus, Labidocera euchaeta, Euchaeta con-cinna, Centropages dorsispinatus, thermal tolerance, thermal discharge