Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8886352 | Marine Environmental Research | 2018 | 31 Pages |
Abstract
Rising temperature can adversely affect specific functions of corals. Coral gametes and planulae of Acropora pulchra were evaluated to determine their temperature resistances, and the potential of developmental thermal acclimation was examined on gametes. Results highlight that fertilization success displays a relatively high thermal resistance at ET50 (median effective temperature) 31.5â¯Â±â¯0.5â¯Â°C after 4â¯h and 30â¯min. Additionally, probability of larval survival is halved at LT50 (median lethal temperature) 28.4â¯Â±â¯0.42â¯Â°C after 14 days. The pre-exposure of oocytes to 30â¯Â°C and 32â¯Â°C for 1â¯h increases the cell development pace during fertilization at ambient temperature. Pre-exposure of gametes, separately at 32â¯Â°C for 1â¯h, increases fertilization success rate by 63% at 32°C, conversely, pre-exposure to 30â¯Â°C induces more variable results. These results evidenced the occurrence of developmental thermal acclimation as a result of thermal pre-exposure of oocytes.
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Authors
Antoine Puisay, Rosanne Pilon, Claire Goiran, Laetitia Hédouin,