Seawater carbonate chemistry, thickness and carbonate elemental composition of the test of juvenile sea urchins in a laboratory experiment

Ocean surface CO2 levels are increasing in line with rising atmospheric CO2 and could exceed 900 µatm by year 2100, with extremes above 2000 µatm in some coastal habitats. The imminent increase in ocean pCO2 is predicted to have negative consequences for marine fishes, including reduced aerobic performance, but variability among species could be expected. Understanding interspecific responses to ocean acidification is important for predicting the consequences of ocean acidification on communities and ecosystems. In the present study, the effects of exposure to near-future seawater CO2 (860 µatm) on resting (M O2rest) and maximum (M O2max) oxygen consumption rates were determined for three tropical coral reef fish species interlinked through predator-prey relationships: juvenile Pomacentrus moluccensis and Pomacentrus amboinensis, and one of their predators: adult Pseudochromis fuscus. Contrary to predictions, one of the prey species, P. amboinensis, displayed a 28-39% increase in M O2max after both an acute and four-day exposure to near-future CO2 seawater, while maintaining M O2rest. By contrast, the same treatment had no significant effects on M O2rest or M O2max of the other two species. However, acute exposure of P. amboinensis to 1400 and 2400 µatm CO2 resulted in M O2max returning to control values. Overall, the findings suggest that: (1) the metabolic costs of living in a near-future CO2 seawater environment were insignificant for the species examined at rest; (2) the M O2max response of tropical reef species to near-future CO2 seawater can be dependent on the severity of external hypercapnia; and (3) near-future ocean pCO2 may not be detrimental to aerobic scope of all fish species and it may even augment aerobic scope of some species. The present results also highlight that close phylogenetic relatedness and living in the same environment, does not necessarily imply similar physiological responses to near-future CO2.

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Couturier, Christine S, Stecyk, Jonathan A W, Rummer, Jodie L, Munday, Philip L, Nilsson, Göran E (2013). Dataset: Seawater carbonate chemistry, thickness and carbonate elemental composition of the test of juvenile sea urchins in a laboratory experiment. https://doi.org/10.1594/PANGAEA.833354

DOI retrieved: 2013

Additional Info

Field Value
Imported on November 29, 2024
Last update November 30, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.833354
Author Couturier, Christine S
Given Name Christine S
Family Name Couturier
More Authors
Stecyk, Jonathan A W
Rummer, Jodie L
Munday, Philip L
Nilsson, Göran E
Source Creation 2013
Publication Year 2013
Resource Type text/tab-separated-values - filename: Couturier_2013
Subject Areas
Name: BiologicalClassification

Name: Biosphere

Name: Chemistry

Related Identifiers
Title: Species-specific effects of near-future CO2 on the respiratory performance of two tropical prey fish and their predator
Identifier: https://doi.org/10.1016/j.cbpa.2013.07.025
Type: DOI
Relation: IsSupplementTo
Year: 2013
Source: Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology
Authors: Couturier Christine S , Stecyk Jonathan A W , Rummer Jodie L , Munday Philip L , Nilsson Göran E .

Title: seacarb: seawater carbonate chemistry with R. R package version 3.0
Identifier: https://cran.r-project.org/package=seacarb
Type: DOI
Relation: References
Year: 2014
Authors: Lavigne Héloïse , Epitalon Jean-Marie , Gattuso Jean-Pierre .