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海洋桡足类的热耐受性

廖一波1;陈全震1;曾江宁1,2;徐晓群1;寿鹿1;刘晶晶1;江志兵1;郑平2   

  1. 1国家海洋局第二海洋研究所国家海洋局海洋生态系统与生物地球化学重点实验室, 杭州 310012; 2浙江大学环境与资源学院, 杭州 310029
  • 收稿日期:2007-03-14 修回日期:1900-01-01 出版日期:2008-02-21 发布日期:2008-02-21

Thermal tolerance of some marine copepods.

LIAO Yi-bo1; CHEN Quan-zhen1; ZENG Jiang-ning1,2; XU Xiao-qun1; SHOU Lu1; LIU Jing-jing1; JIANG Zhi-bing1; ZHENG Ping2   

  1. 1Laboratory of Marine Ecosystem and Biogeochemistry of State Oceanic Administration, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China; 2College of Environment and Resource Science, Zhejiang University, Hangzhou 310029, China

  • Received:2007-03-14 Revised:1900-01-01 Online:2008-02-21 Published:2008-02-21

摘要: 为了探明热排放对近海生态的影响,选用我国东海近海主要桡足类,采用热升温实验方法对其半致死温度进行研究.结果表明,不同生物在相同适温条件下和同种生物在不同适温条件下的热耐受能力均存在差异.自然适应水温为13.5 ℃,中华哲水蚤(Calanus sinicus)和细巧华哲水蚤(Sinocalanus tenellus)的24 h半致死温度值分别为26.9 ℃和25.4 ℃;自然适应水温为14.2 ℃,中华异水蚤(Acartiella sinensis)和近缘大眼剑水蚤(Corycaeus affinis)的24 h半致死温度值分别为26.7 ℃和30.5 ℃;自然适应水温为28.0 ℃,背针胸刺水蚤(Centropages dorsispinatus)、强额拟哲水蚤(Paracalanus crassirostris)、刺尾纺锤水蚤(Acartia spinicauda)和尖额真猛水蚤(Euterpina acutifrons)的24 h半致死温度值分别为34.0 ℃、34.3 ℃、35.7 ℃和36.0 ℃.细巧华哲水蚤在自然适应水温分别为13.5 ℃和23.5 ℃下的24 h半致死温度值为25.4 ℃和33.0 ℃.

关键词: 倍差法, 基本生态控制线, 深圳市, 景观生态风险

Abstract: By using experimental ecological methods, the 24 hours semi-lethal temperature (24 h LT50) of typical copepods living in the coastal area of East China Sea was determined to elucidate the effects of thermal discharge from power station on the coastal ecosystem. The results indicated that different copepods at same natural acclimated temperature and specific copepod at different initial acclimated temperature had different thermal tolerance capability. The 24h LT50 of Calanus sinicusand Sinocalanus tenellusat natural acclimated temperature 13.5 ℃ was 26.9 ℃ and 25.4 ℃, of Acartiella sinensis and Corycaeus affinis at natural acclimated temperature 14.2 ℃ was 26.7 ℃ and 30.5 ℃, and of Centropages dorsispinatus, Paracalanus crassirostris, Acartia spinicaudaand Euterpina acutifrons at natural acclimated temperature 28.0 ℃ was 34.0 ℃, 34.3 ℃, 35.7 ℃ and 36.0 ℃, respectively. The 24h LT50 of S. tenellus at natural acclimated temperature 13.5 ℃ and 23.5 ℃ was 25.4 ℃ and 33.0 ℃, respectively.

Key words: difference-in-difference method, basic ecological control line, Shenzhen, landscape ecological risk