ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

1

Unknown

Seawater carbonate chemistry and clearance rate, absorption efficiency, oxygen uptake rate and scope for growth of the oyster Ostrea chilensis (2020)

Navarro, Jorge M ; Villanueva, Paola A ; Rocha, Natalia ; [et al.]

PANGAEA

add to mindlist on the mindlist

Details

Publication Date: 2024-03-15

Description: Estuaries are characterized by high fluctuation of their environmental conditions. Environmental parameters measured show that the seawater properties of the Quempillén estuary (i.e. temperature, salinity, pCO2, pH and Omega CaCO3) were highly fluctuating and related with season and tide. We test the effects of increasing temperature and pCO2 in the seawater on the physiological energetics of the bivalve Ostrea chilensis. Juvenile oysters were exposed to an orthogonal combination of three temperatures (10, 15, and 20°C) and two pCO2 levels (400 and 1000 μatm) for a period of 60 days to evaluate the temporal effect (i.e. 10, 20, 30, 60 days) on the physiological rates of the oysters. Results indicated a significant effect of temperature and time of exposure on the clearance rate, while pCO2 and the interaction between pCO2 and the other factors studied did not show significant effects. Significant effects of temperature and time of exposure were also observed on the absorption rate, but not the pCO2 nor its interaction with other factors studied. Oxygen consumption was significantly affected by pCO2, temperature and time. Scope for growth was only significantly affected by time; despite this, the highest values were observed for individuals subject to to 20°C and to 1000 μatm pCO2. In this study, Ostrea chilensis showed high phenotypic plasticity to respond to the high levels of temperature and pCO2 experienced in its habitat as no negative physiological effects were observed. Thus, the highly variable conditions of this organism's environment could select for individuals that are more resistant to future scenarios of climate change, mainly to warming and acidification.

Keywords: Absorption efficiency; Absorption rate; Alkalinity, total; Alkalinity, total, standard error; Animalia; Aragonite saturation state; Aragonite saturation state, standard error; Behaviour; Benthic animals; Benthos; Bicarbonate ion; Bicarbonate ion, standard error; Brackish waters; Calcite saturation state; Calcite saturation state, standard error; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate ion, standard error; Carbonate system computation flag; Carbon dioxide; Clearance rate per individual; Containers and aquaria (20-1000 L or 〈 1 m**2); Day of experiment; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Laboratory experiment; Mollusca; OA-ICC; Ocean Acidification International Coordination Centre; Ostrea chilensis; Other studied parameter or process; Oxygen uptake rate per individuals; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error; pH; pH, standard error; Potentiometric; Potentiometric titration; Quempillen_estuary; Registration number of species; Respiration; Salinity; Salinity, standard error; Scope for growth; Single species; South Pacific; Species; Temperate; Temperature; Temperature, water; Treatment; Type; Uniform resource locator/link to reference

Type: Dataset

Format: text/tab-separated-values, 23100 data points

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

DATA PANGAEA

S·F·X

Fulltext

2

Unknown

Seawater carbonate chemistry and larval feeding efficiency and change food selectivity in the mollusk Concholepas concholepas (2013)

Vargas, Cristian A ; de la Hoz, Makarena ; Aguilera, Victor M ; [et al.]

PANGAEA

add to mindlist on the mindlist

Details

Publication Date: 2024-03-15

Description: We present experimental data obtained from an experiment with newly hatched veliger larvae of the gastropod Concholepas concholepas exposed to three pCO2 levels. Egg capsules were collected from two locations in northern and central Chile, and then incubated throughout their entire intra-capsular life cycle at three nominal pCO2 levels, 400, 700 and 1000 ppm (i.e. corresponding to 8.0, 7.8 and 7.6 pH units, respectively). Hatched larvae were fed with natural food assemblages. Food availability at time zero did not vary significantly with pCO2 level. Our results clearly showed a significant effect of elevated pCO2 on the intensity of larval feeding, which dropped by 〉60%. Incubation also showed that pCO2-driven ocean acidification (OA) may radically impact the selectivity of ingested food by C. concholepas larvae. Results also showed that larvae switched their clearance rate based on large cells, such as diatoms and dinoflagellates to tiny and highly abundant nanoflagellates and cyanobacteria as pCO2 levels increased. Thus, this study reveals the important effect of low pH conditions on larval feeding behavior, in terms of both ingestion magnitude and selectivity. These findings support the notion that larval feeding is a key physiological process susceptible to the effects of OA.

Keywords: Alkalinity, total; Alkalinity, total, standard error; Animalia; Aragonite saturation state; Aragonite saturation state, standard error; Behaviour; Bicarbonate ion; Biomass; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Calfuco; Carbon, inorganic, dissolved; Carbonate ion; Carbonate ion, standard error; Carbonate system computation flag; Carbon dioxide; Clearance rate per individual; Coast and continental shelf; Concholepas concholepas; Event label; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Ingestion rate; Ingestion rate of carbon per day per individual; Laboratory experiment; Las_Cruces; Mollusca; North Pacific; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error; Pelagos; Percentage; pH; pH, standard error; Potentiometric; Potentiometric titration; Prey taxa; Replicates; Salinity; Salinity, standard error; Season; Single species; Species, unique identification; Species, unique identification (Semantic URI); Species, unique identification (URI); Temperate; Temperature, water; Temperature, water, standard error; Type; Zooplankton

Type: Dataset

Format: text/tab-separated-values, 9396 data points

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

DATA PANGAEA

S·F·X

Fulltext

3

Unknown

Impact of medium-term exposure to elevated pCO2 levels on the physiological energetics of the mussel Mytilus chilensis (2013)

Navarro, Jorge M ; Torres, Rodrigo ; Acuña, Karin ; [et al.]

PANGAEA

In: Supplement to: Navarro, Jorge M; Torres, Rodrigo; Acuña, Karin; Duarte, Cristian; Manríquez, Patricio H; Lardies, Marco A; Lagos, Nelson A; Vargas, Cristian A; Aguilera, Victor M (2013): Impact of medium-term exposure to elevated pCO2 levels on the physiological energetics of the mussel Mytilus chilensis. Chemosphere, 90(3), 1242-1248, https://doi.org/10.1016/j.chemosphere.2012.09.063

add to mindlist on the mindlist

Details

Publication Date: 2024-03-15

Description: This study evaluated the impact of medium-term exposure to elevated pCO2 levels (750-1200 ppm) on the physiological processes of juvenile Mytilus chilensis mussels over a period of 70 d in a mesocosm system. Three equilibration tanks filled with filtered seawater were adjusted to three pCO2 levels: 380 (control), 750 and 1200 ppm by bubbling air or an air-CO2 mixture through the water. For the control, atmospheric air (with aprox. 380 ppm CO2) was bubbled into the tank; for the 750 and 1200 ppm treatments, dry air and pure CO2 were blended to each target concentration using mass flow controllers for air and CO2. No impact on feeding activity was observed at the beginning of the experiment, but a significant reduction in clearance rate was observed after 35 d of exposure to highly acidified seawater. Absorption rate and absorption efficiency were reduced at high pCO2 levels. In addition, oxygen uptake fell significantly under these conditions, indicating a metabolic depression. These physiological responses of the mussels resulted in a significant reduction of energy available for growth (scope for growth) with important consequences for the aquaculture of this species during medium-term exposure to acid conditions. The results of this study clearly indicate that high pCO2 levels in the seawater have a negative effect on the health of M. chilensis. Therefore, the predicted acidification of seawater associated with global climate change could be harmful to this ecologically and commercially important mussel.

Keywords: Absorption efficiency; Absorption efficiency, standard error; Absorption rate; Absorption rate, standard error; Alkalinity, total; Alkalinity, total, standard error; Ammonia excretion, standard error; Ammonia excretion per individual; Animalia; Aragonite saturation state; Aragonite saturation state, standard error; Behaviour; Benthic animals; Benthos; Bicarbonate ion; Calcite saturation state; Calcite saturation state, standard error; Calculated; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate ion, standard error; Carbonate system computation flag; Carbon dioxide; Clearance rate, standard error; Clearance rate per individual; Coast and continental shelf; Containers and aquaria (20-1000 L or 〈 1 m**2); EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Ingestion rate; Ingestion rate, standard error; Laboratory experiment; Mollusca; Mytilus chilensis; OA-ICC; Ocean Acidification International Coordination Centre; Other metabolic rates; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error; pH; pH, standard error; Potentiometric; Potentiometric titration; Respiration; Respiration rate, oxygen, per individual; Respiration rate, oxygen, standard error; Salinity; Salinity, standard error; Scope for growth; Scope for growth, standard error; Single species; South Pacific; Species; Temperate; Temperature, water; Temperature, water, standard error; Treatment; Yaldad_Bay

Type: Dataset

Format: text/tab-separated-values, 132 data points

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

DATA PANGAEA

S·F·X

Fulltext

4

Unknown

Seawater carbonate chemistry and larval length, respiration and survival of sea urchin Loxechinus albus across (2017)

Gaitán-Espitia, Juan Diego ; Villanueva, Paola A ; Lopez, Jorge ; [et al.]

PANGAEA

In: Supplement to: Gaitán-Espitia, Juan Diego; Villanueva, Paola A; Lopez, Jorge; Torres, Rodrigo; Navarro, Jorge M; Bacigalupe, Leonardo D (2017): Spatio-temporal environmental variation mediates geographical differences in phenotypic responses to ocean acidification. Biology Letters, 13, 20160865, https://doi.org/10.1098/rsbl.2016.0865

add to mindlist on the mindlist

Details

Publication Date: 2024-03-15

Description: Phenotypic plasticity is expected to play a major adaptive role in the response of species to ocean acidification (OA), by providing broader tolerances to changes in pCO2 conditions. However, tolerances and sensitivities to future OA may differ among populations within a species because of their particular environmental context and genetic backgrounds. Here, using the climatic variability hypothesis (CVH), we explored this conceptual framework in populations of the sea urchin Loxechinus albus across natural fluctuating pCO2/pH environments. Although elevated pCO2 affected the morphology, physiology, development and survival of sea urchin larvae, the magnitude of these effects differed among populations. These differences were consistent with the predictions of the CVH showing greater tolerance to OA in populations experiencing greater local variation in seawater pCO2/pH. Considering geographical differences in plasticity, tolerances and sensitivities to increased pCO2 will provide more accurate predictions for species responses to future OA.

Keywords: Alkalinity, total; Alkalinity, total, standard error; Animalia; Aragonite saturation state; Aragonite saturation state, standard error; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calcite saturation state, standard error; Calculated using CO2calc; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Development; Echinodermata; Experiment duration; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Identification; Laboratory experiment; Larvae lam, length; Length; Location; Loxechinus albus; Mortality/Survival; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error; Pelagos; Percentage; pH; pH, standard error; Potentiometric; Potentiometric titration; Registration number of species; Respiration; Respiration rate, oxygen, per individual; Salinity; Salinity, standard error; Single species; Site; South Pacific; Species; Survival; Temperate; Temperature, water; Temperature, water, standard error; Treatment; Tropical; Type; Uniform resource locator/link to reference; Zooplankton

Type: Dataset

Format: text/tab-separated-values, 17640 data points

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

DATA PANGAEA

S·F·X

Fulltext

5

Unknown

Seawater carbonate chemistry and fitness of the edible mussel Mytilus chilensis (2019)

Mellado, Carla ; Chaparro, Oscar R ; Duarte, Cristian ; [et al.]

PANGAEA

In: Supplement to: Mellado, Carla; Chaparro, Oscar R; Duarte, Cristian; Villanueva, Paola A; Ortiz, Alejandro; Valdivia, Nelson; Torres, Rodrigo; Navarro, Jorge M (2019): Ocean acidification exacerbates the effects of paralytic shellfish toxins on the fitness of the edible mussel Mytilus chilensis. Science of the Total Environment, 653, 455-464, https://doi.org/10.1016/j.scitotenv.2018.10.399

add to mindlist on the mindlist

Details

Publication Date: 2024-03-15

Description: High latitudes are considered particularly vulnerable to ocean acidification, since they are naturally low in carbonate ions. The edible mussel Mytilus chilensis is a common calcifier inhabiting marine ecosystems of the southern Chile, where culturing of this species is concentrated and where algal blooms produced by the toxic dinoflagellate A. catenella are becoming more frequent. Juvenile Mytilus chilensis were exposed to experimental conditions simulating two environmental phenomena: pCO2 increase and the presence of paralytic shellfish toxins (PST) produced by the toxic dinoflagellate Alexandrium catenella. Individuals were exposed to two levels of pCO2: 380 μatm (control condition) and 1000 μatm (future conditions) over a period of 39 days (acclimation), followed by another period of 40 days exposure to a combination of pCO2 and PST. Both factors significantly affected most of the physiological variables measured (feeding, metabolism and scope for growth). However, these effects greatly varied over time, which can be explained by the high individual variability described for mussels exposed to different environmental conditions. Absorption efficiency was not affected by the independent effect of the toxic diet; however, the diet and pCO2 interaction affected it significantly. The inhibition of the physiological processes related with energy acquisition by diets containing PST, may negatively impact mussel fitness, which could have important consequences for both wild and cultured mussel populations, and thus, for socioeconomic development in southern Chile.

Keywords: Absorption efficiency; Absorption rate; Alkalinity, total; Alkalinity, total, standard deviation; Ammonia excretion; Animalia; Aragonite saturation state; Aragonite saturation state, standard deviation; Behaviour; Benthic animals; Benthos; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calcite saturation state, standard deviation; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Clearance rate; Coast and continental shelf; Diet; EXP; Experiment; Experiment duration; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Huelmo_Bay; Laboratory experiment; Mollusca; Mytilus chilensis; OA-ICC; Ocean Acidification International Coordination Centre; Organic toxins; Other metabolic rates; Oxygen uptake rate; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Potentiometric; Potentiometric titration; Registration number of species; Respiration; Salinity; Salinity, standard deviation; Scope for growth; Single species; South Pacific; Species; Temperate; Temperature, water; Type; Uniform resource locator/link to reference

Type: Dataset

Format: text/tab-separated-values, 3700 data points

Permalink