Exposure to degraded coral habitat depresses oxygen uptake rate during exercise of a juvenile reef fish

Downie, Adam T., Phelps, Caroline M., Jones, Rhondda, Rummer, Jodie L., Chivers, Douglas P., Ferrari, Maud C.O., and McCormick, Mark I. (2021) Exposure to degraded coral habitat depresses oxygen uptake rate during exercise of a juvenile reef fish. Coral Reefs, 40 (4). pp. 1361-1367.

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Abstract

Coral reef ecosystems are currently under unprecedented stress due to anthropogenic induced climate change. Such stress causes coral habitats to degrade, which has been found to negatively impact the behaviour of some reef fishes. However, it is unknown whether the same chemical stresses from degraded habitats that impacts fish behaviour also impacts energy supporting swimming performance traits of fishes during the pelagic-to-reef life-history bottleneck. Here, we exposed newly settled juvenile Ambon damselfishes (Pomacentrus amboinensis) to either water that had passed over healthy or degraded coral for 24 h. Fishes were then swum at an ecologically relevant swimming speed for 200 min, and oxygen uptake rates were measured periodically. In general, fish swimming in water from degraded coral depressed oxygen uptake rates by 21%, which suggests that degraded habitats can have strong effects on fish physiology during this ecologically-critical time window.

Item ID: 70236
Item Type: Article (Research - C1)
ISSN: 1432-0975
Keywords: Active metabolic rate, Anthropogenic stress, Climate change, Early life history, Endurance swimming, Metamorphosis, Swimming performance
Copyright Information: © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021.
Funders: Australian Research Council (ARC)
Date Deposited: 11 Apr 2022 23:15
FoR Codes: 31 BIOLOGICAL SCIENCES > 3103 Ecology > 310305 Marine and estuarine ecology (incl. marine ichthyology) @ 100%
SEO Codes: 19 ENVIRONMENTAL POLICY, CLIMATE CHANGE AND NATURAL HAZARDS > 1901 Adaptation to climate change > 190102 Ecosystem adaptation to climate change @ 100%
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