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| Main Authors: | , , , , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2023
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| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.957419 |
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| _version_ | 1867171037728210944 |
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| author | Minet, Antoine Metian, Marc Taylor, Angus Gentes, Sophie Azemard, Sabine Oberhänsli, F Swarzenski, Peter W Bustamante, Paco Lacoue-Labarthe, Thomas |
| author_facet | Minet, Antoine Metian, Marc Taylor, Angus Gentes, Sophie Azemard, Sabine Oberhänsli, F Swarzenski, Peter W Bustamante, Paco Lacoue-Labarthe, Thomas |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The bioaccumulation of mercury (Hg) in marine organisms through various pathways has not yet been fully explored, particularly in cephalopods. This study utilises radiotracer techniques using the isotope 203Hg to investigate the toxicokinetics and the organotropism of waterborne inorganic Hg (iHg) and dietary inorganic and organic Hg (methylHg, MeHg) in juvenile common cuttlefish Sepia officinalis. The effect of two contrasting CO2 partial pressures in seawater (400 and 1600 μatm, equivalent to pH 8.08 and 7.54 respectively) and two types of prey (fish and shrimp) were tested as potential driving factors of Hg bioaccumulation. After 14 days of waterborne exposure, juvenile cuttlefish showed a stable concentration factor of 709 ± 54 and 893 ± 117 at pH 8.08 and 7.54, respectively. The accumulated dissolved i203Hg was depurated relatively rapidly with a radiotracer biological half-life (Tb1/2) of 44 ± 12 and 55 ± 16 days at pH 8.08 and 7.54, respectively. During the whole exposure period, approximately half of the i203Hg was found in the gills, but i203Hg also increased in the digestive gland. When fed with 203Hg-radiolabelled prey, cuttlefish assimilated almost all the Hg provided (>95%) independently of the prey type. Nevertheless, the prey type played a major role on the depuration kinetics with Hg Tb1/2 approaching infinity in fish fed cuttlefish vs. 25 days in shrimp fed cuttlefish. Such a difference is explained by the different proportion of Hg species in the prey, with fish prey containing more than 80% of MeHg vs. only 30% in shrimp. Four days after ingestion of radiolabelled food, iHg was primarily found in the digestive organs while MeHg was transferred towards the muscular tissues. No significant effect of pH/pCO2 variation was observed during both the waterborne and dietary exposures on the bioaccumulation kinetics and tissue distribution of i203Hg and Me203Hg. Dietary exposure is the predominant pathway of Hg bioaccumulation in juvenile cuttlefish. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_957419 |
| institution | PANGAEA |
| language | en |
| publishDate | 2023 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Seawater carbonate chemistry and bioaccumulation of inorganic and organic mercury in the cuttlefish Sepia officinalis Minet, Antoine Metian, Marc Taylor, Angus Gentes, Sophie Azemard, Sabine Oberhänsli, F Swarzenski, Peter W Bustamante, Paco Lacoue-Labarthe, Thomas Activity; Activity, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Aragonite saturation state, standard deviation; Arcachon_Bay; Assimilation efficiency; Assimilation efficiency, standard deviation; Bicarbonate ion; Bicarbonate ion, standard deviation; Calcite saturation state; Calcite saturation state, standard deviation; Calculated using seacarb after Nisumaa et al. (2010); Calculated using seacarb after Orr et al. (2018); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, standard deviation; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Contamination; Day of experiment; EXP; Experiment; Figure; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Fugacity of carbon dioxide in seawater, standard deviation; Identification; Laboratory experiment; Mass; Mercury-203, biological half-life; Mercury-203, biological half-life ratio, standard deviation; Mercury-203, concentration factors; Mercury-203, concentration factors, standard deviation; Mercury-203, depuration rate constant; Mercury-203, distribution; Mercury-203, distribution, standard deviation; Mercury-203, uptake rate constant; Mollusca; Nekton; North Atlantic; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Other; Other metabolic rates; Other studied parameter or process; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH, standard deviation; pH, total scale; Phase; Prey taxa; Salinity; Sepia officinalis; Single species; Species, unique identification; Species, unique identification (Semantic URI); Species, unique identification (URI); Temperate; Temperature, water; Temperature, water, standard deviation; Time in days; Tissues; Treatment: pH; Type The bioaccumulation of mercury (Hg) in marine organisms through various pathways has not yet been fully explored, particularly in cephalopods. This study utilises radiotracer techniques using the isotope 203Hg to investigate the toxicokinetics and the organotropism of waterborne inorganic Hg (iHg) and dietary inorganic and organic Hg (methylHg, MeHg) in juvenile common cuttlefish Sepia officinalis. The effect of two contrasting CO2 partial pressures in seawater (400 and 1600 μatm, equivalent to pH 8.08 and 7.54 respectively) and two types of prey (fish and shrimp) were tested as potential driving factors of Hg bioaccumulation. After 14 days of waterborne exposure, juvenile cuttlefish showed a stable concentration factor of 709 ± 54 and 893 ± 117 at pH 8.08 and 7.54, respectively. The accumulated dissolved i203Hg was depurated relatively rapidly with a radiotracer biological half-life (Tb1/2) of 44 ± 12 and 55 ± 16 days at pH 8.08 and 7.54, respectively. During the whole exposure period, approximately half of the i203Hg was found in the gills, but i203Hg also increased in the digestive gland. When fed with 203Hg-radiolabelled prey, cuttlefish assimilated almost all the Hg provided (>95%) independently of the prey type. Nevertheless, the prey type played a major role on the depuration kinetics with Hg Tb1/2 approaching infinity in fish fed cuttlefish vs. 25 days in shrimp fed cuttlefish. Such a difference is explained by the different proportion of Hg species in the prey, with fish prey containing more than 80% of MeHg vs. only 30% in shrimp. Four days after ingestion of radiolabelled food, iHg was primarily found in the digestive organs while MeHg was transferred towards the muscular tissues. No significant effect of pH/pCO2 variation was observed during both the waterborne and dietary exposures on the bioaccumulation kinetics and tissue distribution of i203Hg and Me203Hg. Dietary exposure is the predominant pathway of Hg bioaccumulation in juvenile cuttlefish. |
| title | Seawater carbonate chemistry and bioaccumulation of inorganic and organic mercury in the cuttlefish Sepia officinalis |
| topic | Activity; Activity, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Aragonite saturation state, standard deviation; Arcachon_Bay; Assimilation efficiency; Assimilation efficiency, standard deviation; Bicarbonate ion; Bicarbonate ion, standard deviation; Calcite saturation state; Calcite saturation state, standard deviation; Calculated using seacarb after Nisumaa et al. (2010); Calculated using seacarb after Orr et al. (2018); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, standard deviation; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Contamination; Day of experiment; EXP; Experiment; Figure; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Fugacity of carbon dioxide in seawater, standard deviation; Identification; Laboratory experiment; Mass; Mercury-203, biological half-life; Mercury-203, biological half-life ratio, standard deviation; Mercury-203, concentration factors; Mercury-203, concentration factors, standard deviation; Mercury-203, depuration rate constant; Mercury-203, distribution; Mercury-203, distribution, standard deviation; Mercury-203, uptake rate constant; Mollusca; Nekton; North Atlantic; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Other; Other metabolic rates; Other studied parameter or process; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH, standard deviation; pH, total scale; Phase; Prey taxa; Salinity; Sepia officinalis; Single species; Species, unique identification; Species, unique identification (Semantic URI); Species, unique identification (URI); Temperate; Temperature, water; Temperature, water, standard deviation; Time in days; Tissues; Treatment: pH; Type |
| url | https://doi.org/10.1594/PANGAEA.957419 |