Elevated pCO2 causes developmental delay in early larval Pacific oysters, Crassostrea gigas

Increasing atmospheric CO2 equilibrates with surface seawater, elevating the concentration of aqueous hydrogen ions. This process, ocean acidification, is a future and contemporary concern for aquatic organisms, causing failures in Pacific oyster (Crassostrea gigas) aquaculture. This experiment dete...

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Bibliographic Details
Main Authors: Timmins-Schiffman, Emma, O'Donnell, Michael J, Friedman, Carolyn S, Roberts, Steven B
Format: Dataset
Language:English
Published: PANGAEA 2013
Subjects:
Alkalinity
total
Animalia
Aragonite saturation state
Bicarbonate ion
Bottles or small containers/Aquaria (<20 L)
Calcification/Dissolution
Calcite saturation state
Calculated using CO2SYS
Calculated using seacarb after Nisumaa et al. (2010)
Carbon
inorganic
dissolved
Carbonate ion
Carbonate system computation flag
Carbon dioxide
Coast and continental shelf
Crassostrea gigas
Date
Duration
number of days
EXP
Experiment
Figure
Friday_Harbor
Fugacity of carbon dioxide (water) at sea surface temperature (wet air)
Growth/Morphology
Height
Identification
Laboratory experiment
Larvae
Length
Mollusca
North Pacific
OA-ICC
Ocean Acidification International Coordination Centre
Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)
Pelagos
pH
Potentiometric
Potentiometric titration
Proportion
Salinity
Single species
Species
Spectrophotometric
Temperate
Temperature
water
Treatment
Ocean acidification
Pacific oyster
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.835714
https://doi.org/10.1594/PANGAEA.835714
Description
Summary:Increasing atmospheric CO2 equilibrates with surface seawater, elevating the concentration of aqueous hydrogen ions. This process, ocean acidification, is a future and contemporary concern for aquatic organisms, causing failures in Pacific oyster (Crassostrea gigas) aquaculture. This experiment determines the effect of elevated pCO2 on the early development of C. gigas larvae from a wild Pacific Northwest population. Adults were collected from Friday Harbor, Washington, USA (48°31.7' N, 12°1.1' W) and spawned in July 2011. Larvae were exposed to Ambient (400 µatm CO2), MidCO2 (700 µatm), or HighCO2 (1,000 µatm). After 24 h, a greater proportion of larvae in the HighCO2 treatment were calcified as compared to Ambient. This unexpected observation is attributed to increased metabolic rate coupled with sufficient energy resources. Oyster larvae raised at HighCO2 showed evidence of a developmental delay by 3 days post-fertilization, which resulted in smaller larvae that were less calcified.

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