Marine Biology

, Volume 157, Issue 11, pp 2435–2452

Comparing the effect of elevated pCO2 and temperature on the fertilization and early development of two species of oysters

Authors

  • Laura M. Parker
    • School of Natural Sciences, Ecology and Environment Research Group, College of Health and ScienceUniversity of Western Sydney
    • School of Natural Sciences, Ecology and Environment Research Group, College of Health and ScienceUniversity of Western Sydney
  • Wayne A. O’Connor
    • Industry and Investment NSW Port Stephens Fisheries Institute
Original Paper

DOI: 10.1007/s00227-010-1508-3

Cite this article as:
Parker, L.M., Ross, P.M. & O’Connor, W.A. Mar Biol (2010) 157: 2435. doi:10.1007/s00227-010-1508-3

Abstract

This study compared the synergistic effects of elevated pCO2 and temperature on the early life history stages of two ecologically and economically important oysters: the Sydney rock oyster, Saccostrea glomerata and the Pacific oyster, Crassostrea gigas. Gametes, embryos, larvae and spat were exposed to four pCO2 (375, 600, 750, 1,000 µatm) and four temperature (18, 22, 26, 30°C) levels. At elevated pCO2 and suboptimal temperatures, there was a reduction in the fertilization success of gametes, a reduction in the development of embryos and size of larvae and spat and an increase in abnormal morphology of larvae. These effects varied between species and fertilization treatments with S. glomerata having greater sensitivity than C. gigas. In the absence of adaptation, C. gigas may become the more dominant species along the south-eastern coast of Australia, recruiting into estuaries currently dominated by the native S. glomerata.

Copyright information

© Springer-Verlag 2010