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

Jorge M. Navarro, Rodrigo Torres, Karin Acuña, Cristian Duarte, Patricio H. Manriquez, Marco Lardies, Nelson A. Lagos, Cristian Vargas, Victor Aguilera

Resultado de la investigación: Article

80 Citas (Scopus)

Resumen

This study evaluated the impact of medium-term exposure to elevated pCO2 levels (750-1200ppm) on the physiological processes of juvenile Mytilus chilensis mussels over a period of 70d in a mesocosm system. Three equilibration tanks filled with filtered seawater were adjusted to three pCO2 levels: ∼380 (control), ∼750 and ∼1200ppm by bubbling air or an air-CO2 mixture through the water. For the control, atmospheric air (with aprox. 380ppm CO2) was bubbled into the tank; for the 750 and 1200ppm 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 35d 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.

Idioma originalEnglish
Páginas (desde-hasta)1242-1248
Número de páginas7
PublicaciónChemosphere
Volumen90
N.º3
DOI
EstadoPublished - 1 ene 2013

Huella dactilar

Mytilus
Bivalvia
Seawater
energetics
Air
air
seawater
Physiological Phenomena
Aquaculture
absorption efficiency
clearance rate
Acidification
Climate Change
Level control
mesocosm
physiological response
Growth
Climate change
acidification
aquaculture

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

Citar esto

Navarro, Jorge M. ; Torres, Rodrigo ; Acuña, Karin ; Duarte, Cristian ; Manriquez, Patricio H. ; Lardies, Marco ; Lagos, Nelson A. ; Vargas, Cristian ; Aguilera, Victor. / Impact of medium-term exposure to elevated pCO2 levels on the physiological energetics of the mussel Mytilus chilensis. En: Chemosphere. 2013 ; Vol. 90, N.º 3. pp. 1242-1248.
@article{d11241affcc74c02ac922a600064f362,
title = "Impact of medium-term exposure to elevated pCO2 levels on the physiological energetics of the mussel Mytilus chilensis",
abstract = "This study evaluated the impact of medium-term exposure to elevated pCO2 levels (750-1200ppm) on the physiological processes of juvenile Mytilus chilensis mussels over a period of 70d in a mesocosm system. Three equilibration tanks filled with filtered seawater were adjusted to three pCO2 levels: ∼380 (control), ∼750 and ∼1200ppm by bubbling air or an air-CO2 mixture through the water. For the control, atmospheric air (with aprox. 380ppm CO2) was bubbled into the tank; for the 750 and 1200ppm 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 35d 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 = "Feeding, Mytilus, Ocean acidification, Physiology, Scope for growth",
author = "Navarro, {Jorge M.} and Rodrigo Torres and Karin Acu{\~n}a and Cristian Duarte and Manriquez, {Patricio H.} and Marco Lardies and Lagos, {Nelson A.} and Cristian Vargas and Victor Aguilera",
year = "2013",
month = "1",
day = "1",
doi = "10.1016/j.chemosphere.2012.09.063",
language = "English",
volume = "90",
pages = "1242--1248",
journal = "Chemosphere",
issn = "0045-6535",
publisher = "Elsevier Limited",
number = "3",

}

Navarro, JM, Torres, R, Acuña, K, Duarte, C, Manriquez, PH, Lardies, M, Lagos, NA, Vargas, C & Aguilera, V 2013, 'Impact of medium-term exposure to elevated pCO2 levels on the physiological energetics of the mussel Mytilus chilensis', Chemosphere, vol. 90, n.º 3, pp. 1242-1248. https://doi.org/10.1016/j.chemosphere.2012.09.063

Impact of medium-term exposure to elevated pCO2 levels on the physiological energetics of the mussel Mytilus chilensis. / Navarro, Jorge M.; Torres, Rodrigo; Acuña, Karin; Duarte, Cristian; Manriquez, Patricio H.; Lardies, Marco; Lagos, Nelson A.; Vargas, Cristian; Aguilera, Victor.

En: Chemosphere, Vol. 90, N.º 3, 01.01.2013, p. 1242-1248.

Resultado de la investigación: Article

TY - JOUR

T1 - Impact of medium-term exposure to elevated pCO2 levels on the physiological energetics of the mussel Mytilus chilensis

AU - Navarro, Jorge M.

AU - Torres, Rodrigo

AU - Acuña, Karin

AU - Duarte, Cristian

AU - Manriquez, Patricio H.

AU - Lardies, Marco

AU - Lagos, Nelson A.

AU - Vargas, Cristian

AU - Aguilera, Victor

PY - 2013/1/1

Y1 - 2013/1/1

N2 - This study evaluated the impact of medium-term exposure to elevated pCO2 levels (750-1200ppm) on the physiological processes of juvenile Mytilus chilensis mussels over a period of 70d in a mesocosm system. Three equilibration tanks filled with filtered seawater were adjusted to three pCO2 levels: ∼380 (control), ∼750 and ∼1200ppm by bubbling air or an air-CO2 mixture through the water. For the control, atmospheric air (with aprox. 380ppm CO2) was bubbled into the tank; for the 750 and 1200ppm 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 35d 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.

AB - This study evaluated the impact of medium-term exposure to elevated pCO2 levels (750-1200ppm) on the physiological processes of juvenile Mytilus chilensis mussels over a period of 70d in a mesocosm system. Three equilibration tanks filled with filtered seawater were adjusted to three pCO2 levels: ∼380 (control), ∼750 and ∼1200ppm by bubbling air or an air-CO2 mixture through the water. For the control, atmospheric air (with aprox. 380ppm CO2) was bubbled into the tank; for the 750 and 1200ppm 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 35d 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.

KW - Feeding

KW - Mytilus

KW - Ocean acidification

KW - Physiology

KW - Scope for growth

UR - http://www.scopus.com/inward/record.url?scp=84869870163&partnerID=8YFLogxK

U2 - 10.1016/j.chemosphere.2012.09.063

DO - 10.1016/j.chemosphere.2012.09.063

M3 - Article

C2 - 23079160

AN - SCOPUS:84869870163

VL - 90

SP - 1242

EP - 1248

JO - Chemosphere

JF - Chemosphere

SN - 0045-6535

IS - 3

ER -