Effects of ocean acidification on 109Cd, 57Co, and 134Cs bioconcentration by the European oyster (Ostrea edulis): Biokinetics and tissue-to-subcellular partitioning

Sezer, Narin; Kılıç, Önder; Métian, Marc; Belivermiş, Murat

doi:10.1016/j.jenvrad.2018.07.011

Cited by 14 publications

(6 citation statements)

References 57 publications

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“…O. edulis exhibited a tipping point at pH T 6.9 below which the shell color no longer changed, likely corresponding to a maximal bleaching of the shell. Several studies conducted on oysters and gastropods have also reported shell bleaching at pH ∼7.7-7.8, which could be attributed to delamination of the periostracum (Avignon et al, 2020; Duquette et al, 2017; Le Moullac et al, 2016; Sezer et al, 2018). Such alteration makes the shell more prone to CaCO 3 dissolution (Peck et al, 2016; Tunnicliffe et al, 2009), leading to subsequent changes in biomineral microstructure and shell hardness (Auzoux-Bordenave et al, 2019; Chandra Rajan et al, 2021; Fitzer et al 2014).…”

Section: Discussionmentioning

confidence: 99%

Differential reaction norms to ocean acidification in two oyster species from contrasting habitats

Caillon,

Pernet,

Lutier

et al. 2023

Preprint

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Ocean acidification (OA), a consequence of the increase in anthropogenic emissions of carbon dioxide, causes major changes in the chemistry of carbonates in the ocean with deleterious effects on calcifying organisms. The pH/pCO2 range to which species are exposed in nature is important to consider when interpreting the response of coastal organisms to OA. In this context, emerging approaches, which assess the reaction norms of organisms to a wide pH gradient, are improving our understanding of tolerance thresholds and acclimation potential to OA. In this study, we decipher the reaction norms of two oyster species living in contrasting habitats: the intertidal oyster Crassostrea gigas and the subtidal flat oyster Ostrea edulis, which are two economically and ecologically valuable species in temperate ecosystems. Six-month-old oysters of each species were exposed in common garden for 48 days to a pH gradient ranging from 7.7 to 6.4 (total scale). Both species are tolerant down to a pH of 6.6 with high plasticity in fitness-related traits such as survival and growth. However, oysters undergo remodelling of membrane fatty acids to cope with decreasing pH along with shell bleaching impairing shell integrity and consequently animal fitness. Finally, our work reveals species-specific physiological responses and highlights that intertidal C. gigas seems to have a better acclimation potential to rapid and extreme OA changes than O. edulis. Overall, our study provides important data about the phenotypic plasticity and its limits in two oyster species, which is essential for assessing the challenges posed to marine organisms by OA.

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Section: Discussionmentioning

confidence: 99%

Differential reaction norms to ocean acidification in two oyster species from contrasting habitats

Caillon,

Pernet,

Lutier

et al. 2023

Preprint

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“…The mussels were kept in their experimental aquaria for 4 days, and the culture media (seawater with different Li concentrations) were renewed every day at the same time (13:40 ± 40 min). Due to the paucity of data on the Li bioaccumulation process, we decided (1) to investigate the short-time process to better understand the short-term isotope fractionation and uptake processes assuming that Li should act like other alkali elements (i.e., Cs, which quickly reaches a saturation state when accumulated in marine bivalves − ) and (2) to use a relatively high exposure concentration based on data available in freshwater studies. , Seawater samples were collected before and after each water change to confirm that each aquarium operated as an open system. Between water changes, the mussels were fed for 1 h using noncontaminated seawater containing phytoplankton Isochrysis galbana at a concentration of 10 4 cells mL –1 .…”

Section: Materials and Methodsmentioning

confidence: 99%

Bioaccumulation of Lithium Isotopes in Mussel Soft Tissues and Implications for Coastal Environments

Thibon

Métian

Oberhänsli

et al. 2021

ACS Earth Space Chem.

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Lithium production has dramatically increased over the past decade, and first cases of environmental Li pollution have been recently reported in urban and in mining regions. While elevated Li concentrations may be toxic for living organisms, tools to monitor Li in the environment have not yet been developed. Consequently, its impact on key biota and human health is still poorly known. The present laboratory-based study shows that the soft tissue of blue mussels (Mytilus edulis) can be used to quantify Li contamination in coastal waters. Stable Li isotope ratios ( 7 Li/ 6 Li) measured in these soft tissues correlate positively with seawater Li concentrations and show precisely the threshold above which mussels shift their depuration mechanism. Combined with other data from the natural environment, the experimental results have profound implications for the fate of coastal ecosystems and shellfish consumption living under high Li environmental level. We also highlight the need to develop innovative tools to extract Li from wastewaters before its release into rivers and, ultimately, the ocean.

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“…O. edulis exhibited a tipping point at pHT 6.9 below which the shell color no longer changed, likely corresponding to a maximal bleaching of the shell. Several studies conducted on oysters and gastropods have also reported shell bleaching at pH ~7.7-7.8, which could be attributed to delamination of the periostracum (Avignon et al, 2020;Duquette et al, 2017;Le Moullac et al, 2016;Sezer et al, 2018). Such alteration makes the shell more prone to CaCO3 dissolution (Peck et al, 2016;Tunnicliffe et al, 2009), leading to subsequent changes in biomineral microstructure and shell hardness (Auzoux-Bordenave et al, 2019;Chandra Rajan et al, 2021;Fitzer et al 2014).…”

Section: Oa Reduces Growth-related Parameters and Causes Shell Bleach...mentioning

confidence: 99%

Differential reaction norms to ocean acidification in two oyster species from contrasting habitats

Caillon,

Pernet,

Lutier

et al. 2023

Journal of Experimental Biology

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Ocean acidification (OA), a consequence of the increase in anthropogenic emissions of carbon dioxide, causes major changes in the chemistry of carbonates in the ocean with deleterious effects on calcifying organisms. The pH/PCO2 range to which species are exposed in nature is important to consider when interpreting the response of coastal organisms to OA. In this context, emerging approaches, which assess the reaction norms of organisms to a wide pH gradient, are improving our understanding of tolerance thresholds and acclimation potential to OA. In this study, we deciphered the reaction norms of two oyster species living in contrasting habitats: the intertidal oyster Crassostrea gigas and the subtidal flat oyster Ostrea edulis, which are two economically and ecologically valuable species in temperate ecosystems. Six-month-old oysters of each species were exposed in common garden tanks for 48 days to a pH gradient ranging from 7.7 to 6.4 (total scale). Both species were tolerant down to a pH of 6.6 with high plasticity in fitness-related traits such as survival and growth. However, oysters underwent remodelling of membrane fatty acids to cope with decreasing pH along with shell bleaching impairing shell integrity and consequently animal fitness. Finally, our work revealed species-specific physiological responses and highlights that intertidal C. gigas seem to have a better acclimation potential to rapid and extreme OA changes than O. edulis. Overall, our study provides important data about the phenotypic plasticity and its limits in two oyster species, which is essential for assessing the challenges posed to marine organisms by OA.

show abstract

Effects of ocean acidification on 109Cd, 57Co, and 134Cs bioconcentration by the European oyster (Ostrea edulis): Biokinetics and tissue-to-subcellular partitioning

Cited by 14 publications

References 57 publications

Differential reaction norms to ocean acidification in two oyster species from contrasting habitats

Differential reaction norms to ocean acidification in two oyster species from contrasting habitats

Bioaccumulation of Lithium Isotopes in Mussel Soft Tissues and Implications for Coastal Environments

Differential reaction norms to ocean acidification in two oyster species from contrasting habitats

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