Will krill fare well under Southern Ocean acidification?

Antarctic krill embryos and larvae were experimentallyexposed to 380 (control), 1000 and2000 matm pCO2 in order to assess the possibleimpact of ocean acidification on early developmentof krill. No significant effects weredetected on embryonic development or larvalbehaviour at 1000 matm pCO2; however...

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Bibliographic Details
Published in:Biology Letters
Main Authors: Kawaguchi, S, Kurihara, H, King, R, Hale, L, Berli, TM, Robinson, JP, Ishida, A, Wakita, M, Virtue, P, Nicol, S, Ishimatsu, A
Format: Article in Journal/Newspaper
Language:English
Published: The Royal Society 2011
Subjects:
Biological Sciences
Other Biological Sciences
Global Change Biology
Antarctic
Southern Ocean
Antarc*
Antarctic Krill
Ocean acidification
Online Access:http://rsbl.royalsocietypublishing.org/content/7/2/288
https://doi.org/10.1098/rsbl.2010.0777
http://www.ncbi.nlm.nih.gov/pubmed/20943680
http://ecite.utas.edu.au/68395
Description
Summary:Antarctic krill embryos and larvae were experimentallyexposed to 380 (control), 1000 and2000 matm pCO2 in order to assess the possibleimpact of ocean acidification on early developmentof krill. No significant effects weredetected on embryonic development or larvalbehaviour at 1000 matm pCO2; however, at2000 matm pCO2 development was disruptedbefore gastrulation in 90 per cent of embryos,and no larvae hatched successfully. Our modelprojections demonstrated that Southern Oceansea water pCO2 could rise up to 1400 matm inkrills depth range under the IPCC IS92a scenarioby the year 2100 (atmospheric pCO2788 matm). These results point out the urgentneed for understanding the pCO2-responserelationship for krill developmental and laterstages, in order to predict the possible fate ofthis key species in the Southern Ocean.

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