Oyster reproduction is compromised by acidification experienced seasonally in coastal regions.

ABSTRACT: Atmospheric carbon dioxide concentrations have been rising during the past century, leading to ocean acidification (OA). Coastal and estuarine habitats experience annual pH variability that vastly exceeds the magnitude of long-term projections in open ocean regions. Eastern oyster (Crassostrea virginica) reproduction season coincides with periods of low pH occurrence in estuaries, thus we investigated effects of moderate (pH 7.5, pCO₂ 2260 µatm) and severe OA (pH 7.1, pCO₂ 5584 µatm; and 6.7, pCO₂ 18480 µatm) on oyster gametogenesis, fertilization, and early larval development successes. Exposure at severe OA during gametogenesis caused disruption in oyster reproduction. Oogenesis appeared to be more sensitive compared to spermatogenesis. However, Eastern o

SUBMITTER: Boulais M 

PROVIDER: S-EPMC5643346 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature