Cortese, D., Norin, T., Beldade, R., Crespel, A., Killen, S. S. and Mills, S. C. (2021) Physiological and behavioural effects of anemone bleaching on symbiont anemonefish in the wild. Functional Ecology, 35(3), pp. 663-674. (doi: 10.1111/1365-2435.13729)
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Abstract
1. Climate change causes extreme heat waves that have induced worldwide mass coral bleaching. The impacts of temperature‐induced bleaching events on the loss of algal endosymbionts in both corals and anemones are well documented. However, the cascading impacts of bleaching on animals that live in association with corals and anemones are understudied. 2. We performed a field‐based experiment to investigate how host anemone bleaching affected the metabolic rate, growth, behaviour and survival of wild juvenile orange‐fin anemonefish Amphiprion chrysopterus over 1, 2 and (for survival) 9 months. 3. We found that the standard metabolic rate of anemonefish residing in bleached anemones decreased over time but was unaffected in fish from healthy anemones. Despite the reduced metabolic cost, the growth rate of fish from bleached anemones was significantly lower compared to fish from healthy anemones, suggesting that animals residing in bleached hosts are at an energetic disadvantage. This was corroborated by our finding that fish from bleached anemones spent more time out of their anemones, suggestive of a greater need to forage in the water column. However, fish from bleached anemones were overall less active and used less space around the anemone, resulting in a negative correlation between space use and survival after 4 weeks. 4. Our results provide insight into the physiological and behavioural effects of host bleaching on juvenile fish in the wild, and highlight how relatively short‐term thermal anomalies can have long‐lasting impacts beyond the bleached anemones or corals themselves.
| Item Type: | Articles |
|---|---|
| Additional Information: | AGR: IND607309544. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Killen, Professor Shaun and Crespel, Dr Amelie and Cortese, Ms Daphne and Norin, Dr Tommy |
| Authors: | Cortese, D., Norin, T., Beldade, R., Crespel, A., Killen, S. S., and Mills, S. C. |
| College/School: | College of Medical Veterinary and Life Sciences > School of Biodiversity, One Health & Veterinary Medicine |
| Journal Name: | Functional Ecology |
| Publisher: | Wiley |
| ISSN: | 0269-8463 |
| ISSN (Online): | 1365-2435 |
| Published Online: | 11 January 2021 |
| Copyright Holders: | Copyright © 2021 The Authors |
| First Published: | First published in Functional Ecology 35(3): 663-674 |
| Publisher Policy: | Reproduced under a Creative Commons License |
| Data DOI: | 10.5281/zenodo.4167473 |
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