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The Biology of Coral Reefs$
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Charles R. C. Sheppard, Simon K. Davy, and Graham M. Pilling

Print publication date: 2009

Print ISBN-13: 9780198566359

Published to Oxford Scholarship Online: September 2009

DOI: 10.1093/acprof:oso/9780198566359.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 23 September 2021

Symbiotic Interactions

Symbiotic Interactions

(p.98) 4 Symbiotic Interactions
The Biology of Coral Reefs

Charles R. C. Sheppard

Simon K. Davy

Graham M. Pilling

Oxford University Press

Symbiosis, where different species live together for prolonged periods, is ubiquitous and extremely important in coral reefs. The most important symbiosis is between corals and the microalgae (zooxanthellae) that live in their cells, without which coral reefs would not exist. This chapter focusses on the diversity of zooxanthellae, the linkage with coral calcification, the supply of photosynthetically-fixed carbon to the coral, and the conservation and recycling of essential nutrients (especially nitrogen and phosphorus) by this symbiosis. The acquisition and breakdown of the symbiosis, particularly under thermal stress (i.e. coral bleaching), is described. Other important coral-microbe symbioses involve cyanobacteria, heterotrophic bacteria, viruses and protozoans, and endolithic algae and fungi that live in the coral skeleton. Symbioses between sponges and bacteria or algae are also important, as are the iconic associations between fish and various invertebrates (e.g. sea anemones) or other fish species.

Keywords:   symbiosis, zooxanthellae, nutrition, calcification, thermal stress, microbes, cyanobacteria, protozoans, endolithic algae, anemonefish

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