期刊
MARINE POLLUTION BULLETIN
卷 73, 期 2, 页码 409-415出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2013.06.034
关键词
Carbon dioxide; CO2 leakage; Environmental hypercapnia; Mitochondria-rich cell; Na+/K+-ATPase activity; Paralichthys olivaceus
资金
- New Energy and Industrial Technology Development Organization (NEDO)
- Research Institute of Innovative Technology for the Earth (RITE)
We studied the morphological and biochemical changes of mitochondria-rich cells (MRCs) of a demersal teleost, Paralichthys olivaceus, during exposure to 0.98, 2.97 and 4.95 kPa pCO(2). The apical opening area of MRCs increased 2.2 and 4.1 times by 24 h exposure to 2.97 and 4.95 kPa pCO(2), respectively, while the cross-sectional area or density of MRCs did not change. Gill Na+/K+-ATPase activity more than doubled at 72 h and then returned to the pre-exposure level at 168 h in 0.98 kPa pCO(2), while it increased 1.7 times at 24 h at 4.95 kPa. These results indicate that the apical opening area of MRCs and the gill Na+/K+-ATPase activity may be used as an indicator of acute (up to 72 h), but not chronic, impacts of high (>1 kPa) seawater CO2 conditions in P. olivacues. Limitations of those parameters as indices of CO2 impacts are discussed. (c) 2013 Elsevier Ltd. All rights reserved.
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