Will krill fare well under Southern Ocean acidification?
Will krill fare well under Southern Ocean acidification?
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DOI：
10.1098/rsbl.2010.0777
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发表时间：
2011-04-23
期刊：
影响因子：
3.3
通讯作者：
Ishimatsu, Atsushi
中科院分区：
文献类型：
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作者：
Kawaguchi, So;Kurihara, Haruko;Ishimatsu, Atsushi
南极磷虾胚胎和幼虫通过实验暴露于380（对照）、1000和2000 mu atm pCO(2)，以评估海洋酸化对磷虾早期发育的可能影响。在 1000 mu atm pCO(2) 下，未检测到对胚胎发育或幼虫行为的显着影响；然而，在2000 mu atm时，90%的胚胎在原肠胚形成之前pCO(2)的发育受到干扰，并且没有幼虫成功孵化。我们的模型预测表明，到 2100 年，根据 IPCC IS92a 情景，南大洋海水 pCO(2) 在磷虾深度范围内可能上升至 1400 mu atm（大气 pCO(2) 788 mu atm）。这些结果表明迫切需要了解磷虾发育和后期阶段的 pCO(2) 响应关系，以便预测南大洋这一关键物种的可能命运。
Antarctic krill embryos and larvae were experimentally exposed to 380 (control), 1000 and 2000 mu atm pCO(2) in order to assess the possible impact of ocean acidification on early development of krill. No significant effects were detected on embryonic development or larval behaviour at 1000 mu atm pCO(2); however, at 2000 mu atm pCO(2) development was disrupted before gastrulation in 90 per cent of embryos, and no larvae hatched successfully. Our model projections demonstrated that Southern Ocean sea water pCO(2) could rise up to 1400 mu atm in krill's depth range under the IPCC IS92a scenario by the year 2100 (atmospheric pCO(2) 788 mu atm). These results point out the urgent need for understanding the pCO(2)-response relationship for krill developmental and later stages, in order to predict the possible fate of this key species in the Southern Ocean.