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J Exp Mar Biol Ecol 2012 Sep 01;426-427:12-17. doi: 10.1016/j.jembe.2012.05.017.
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Juvenile growth of the tropical sea urchin Lytechinus variegatus exposed to near-future ocean acidification scenarios.

Albright R , Bland C , Gillette P , Serafy JE , Langdon C , Capo TR .

To evaluate the effect of elevated pCO(2) exposure on the juvenile growth of the sea urchin Lytechinus variegatus, we reared individuals for three months in one of three target pCO(2) levels: ambient seawater (380 µatm) and two scenarios that are projected to occur by the middle (560 µatm) and end (800 µatm) of this century. At the end of 89 days, urchins reared at ambient pCO(2) weighed 12% more than those reared at 560 µatm and 28% more than those reared at 800 µatm. Skeletons were analyzed using scanning electron miscroscopy, revealing degradation of spines in urchins reared at elevated pCO(2) (800 µatm). Our results indicate that elevated pCO(2) levels projected to occur this century may adversely affect the development of juvenile sea urchins. Acidification-induced changes to juvenile urchin development would likely impair performance and functioning of juvenile stages with implications for adult populations.

PubMed ID: 22833691
PMC ID: PMC3401588
Article link: J Exp Mar Biol Ecol
Grant support: [+]

Genes referenced: LOC100887844

References [+] :
Byrne, Temperature, but not pH, compromises sea urchin fertilization and early development under near-future climate change scenarios. 2009, Pubmed, Echinobase