Will krill fare well under Southern Ocean acidification?
Biol Lett
; 7(2): 288-91, 2011 Apr 23.
Article
in En
| MEDLINE
| ID: mdl-20943680
ABSTRACT
Antarctic krill embryos and larvae were experimentally exposed to 380 (control), 1000 and 2000 µatm pCO2 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 µatm pCO2; however, at 2000 µatm pCO2 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 pCO2 could rise up to 1400 µatm in krill's depth range under the IPCC IS92a scenario by the year 2100 (atmospheric pCO2 788 µatm). These results point out the urgent need for understanding the pCO2-response relationship for krill developmental and later stages, in order to predict the possible fate of this key species in the Southern Ocean.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Seawater
/
Euphausiacea
/
Acclimatization
Type of study:
Prognostic_studies
Limits:
Animals
Language:
En
Journal:
Biol Lett
Journal subject:
BIOLOGIA
Year:
2011
Type:
Article
Affiliation country:
Australia