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Impacts of CO_2-driven seawater acidification on survival,egg production rate and hatching success of four marine copepods

查看全文 作　　者：ZHANG [1]Dajuan;LI [1,2]Shaojing;WANG [1,2]Guizhong;GUO [1,2]Donghui 高影响力作者 机构地区：[1]College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005, China;[2]State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China高影响力机构 出　　处：《Acta Oceanologica Sinica》索引2011年第30卷第6期,共9页高影响力期刊 基　　金：The State Oceanic Administration Foundation of China under contract No.200805029 摘　　要：Ecological experiments were conducted to examine the effects of seawater containing elevated par- tial pressure of carbon dioxide (p CO2 800 × 10 -6 , 2 000 × 10 -6 , 5 000 × 10 -6 and 10 000 × 10 -6 ) on the survival and reproduction of female Acartia pacifica, Acartia spinicauda, Calanus sinicus and Centropages tenuiremis, which are the dominant copepods in the southern coastal waters of China. The results show that the effects of elevated p CO2 on the survival rates of copepods were species-specific. C. sinicus, which was a macro-copepod, had a higher survival rate (62.01%-71.96%) than the other three species (5.00%-26.67%) during the eight day exposure. The egg production rates of C. sinicus, A. spinicauda and C. tenuiremis were significantly inhibited by the increased p CO2 and the exposure time duration. There were significantly negative impacts on the egg hatching success of A. spinicauda and C. tenuiremis in the p CO2 2 000 × 10 -6 and 10 000 × 10 -6 groups, and, in addition, the exposure time had noticeably impacts on these rates too. This study indicates that the reproductive performances of copepods were sensitive to elevated p CO2 , and that the response of different copepod species to acidified seawater was different. Furthermore, the synergistic effects of seawater acidification and climate change or other pollutant stresses on organisms should be given more attention. 关 键 词：二氧化碳 沿海水域 桡足类 卵孵化 酸化 产蛋率 中华哲水蚤 驱动
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