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

Laura M. Parker, Pauline M. Ross, Wayne A. O'Connor

Research output: Contribution to journalArticlepeer-review

167 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)2435-2452
Number of pages18
JournalMarine Biology
Volume157
Issue number11
DOIs
Publication statusPublished - 2010
Externally publishedYes

Fingerprint

Dive into the research topics of 'Comparing the effect of elevated pCO<sub>2</sub> and temperature on the fertilization and early development of two species of oysters'. Together they form a unique fingerprint.

Cite this