Effects of ocean acidification on metabolic performance in coral reef fishes

Rummer, Jodie (2015) Effects of ocean acidification on metabolic performance in coral reef fishes. In: [Presented at 145th Annual Meeting of the American Fisheries Society]. From: AFS 2015: 145th Annual Meeting of the American Fisheries Society, 16-20 August 2015, Portland, OR, USA.

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Abstract

Given the dramatic changes in atmospheric conditions over the 400MY evolutionary history of the fishes, physiological tolerance to elevated CO2 may not be unexpected. However, the most speciose genera of coral reef fishes radiated relatively recently (23MYA) – during a period of low CO2. And, although based on only a few studies so far, the physiological effects of elevated CO2 on coral reef fishes are mixed. In some species, metabolic performance is negatively affected by near-future CO2 levels. However, other species exhibit either no change or even enhanced scope for aerobic performance. The reasons for this variation could be related to differences in lifestyle and habitat use, which could influence CO2 tolerance. Another possibility is that whole organism responses in some species may not be sensitive enough to pick up the fine-scale adjustments made at the tissue and cellular levels. Identifying changes at key sites related to oxygen transport, oxygen consumption, and energy production in response to elevated CO2 over both acute and prolonged timescales linking back to the organism’s life history are crucial. Mechanisms that may be influencing physiological changes at the whole organism level could be potential targets of natural selection and adaptation to future ocean conditions.

Item ID: 45353
Item Type: Conference Item (Abstract / Summary)
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Date Deposited: 06 Sep 2016 00:45
FoR Codes: 06 BIOLOGICAL SCIENCES > 0606 Physiology > 060603 Animal Physiology Systems @ 50%
05 ENVIRONMENTAL SCIENCES > 0501 Ecological Applications > 050101 Ecological Impacts of Climate Change @ 50%
SEO Codes: 96 ENVIRONMENT > 9603 Climate and Climate Change > 960301 Climate Change Adaptation Measures @ 50%
96 ENVIRONMENT > 9603 Climate and Climate Change > 960305 Ecosystem Adaptation to Climate Change @ 50%
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