Symbiodinium diversity in mesophotic coral communities on the Great Barrier Reef: a first assessment

Bongaerts, Pim, Sampayo, Eugenia M., Bridge, Thomas C. L., Ridgway, Tyrone, Vermeulen, Francisca, Englebert, Norbert, Webster, Jody M. and Hoegh-Guldberg, Ove (2011) Symbiodinium diversity in mesophotic coral communities on the Great Barrier Reef: a first assessment. Marine Ecology-Progress Series, 439 117-126. doi:10.3354/meps09315

Author Bongaerts, Pim
Sampayo, Eugenia M.
Bridge, Thomas C. L.
Ridgway, Tyrone
Vermeulen, Francisca
Englebert, Norbert
Webster, Jody M.
Hoegh-Guldberg, Ove
Title Symbiodinium diversity in mesophotic coral communities on the Great Barrier Reef: a first assessment
Journal name Marine Ecology-Progress Series   Check publisher's open access policy
ISSN 0171-8630
Publication date 2011-10
Sub-type Article (original research)
DOI 10.3354/meps09315
Open Access Status DOI
Volume 439
Start page 117
End page 126
Total pages 10
Place of publication Oldendorf, Germany
Publisher Inter-Research
Collection year 2012
Language eng
Formatted abstract
Despite a growing interest in mesophotic coral ecosystems (MCEs), information on the photosynthetic endosymbionts (genus Symbiodinium) associated with scleractinian corals inhabiting deep reef ecosystems is sparse. Here, the deep-water Symbiodinium diversity is assessed from 10 different coral genera at a depth range of 45 to 70 m on the Great Barrier Reef (GBR), Australia. Symbiodinium identity was established using denaturing gradient gel electrophoresis (DGGE) fingerprinting of the internal transcribed spacer region 2 (ITS2) of the ribosomal DNA. Except for the novel Symbiodinium type C131 (found in Porites), all Symbiodinium types have previously been identified in shallow reef corals across the Pacific. Specimens of Seriatopora, Montipora, and Porites harboured similar symbionts as reported in shallow water (e.g. C3n, C3n-hh, C15, and C17), thus adhering to patterns of host-specificity across a wide depth range. However, several other Symbiodinium types were found to transcend previously established patterns of host-specificity at mesophotic depths. For example, ‘host-specialist’ types C3i and C3k (previously only reported in Acropora spp.) were found here to associate with a range of different genera (Leptoseris, Pachyseris, Fungia, and Echinophyllia). Although limited in sample size, this preliminary survey indicates that mesophotic habitats on the GBR may not represent an isolated community in terms of Symbiodinium diversity, which has significant relevance to their potential to act as refugia. Moreover, the present study identifies the need to examine symbiont diversity across broad environmental ranges (including MCEs) in order to gain an accurate understanding of symbiosis specificity and distribution range of specific coral-Symbiodinium associations.
Keyword Symbiodinium
Deep reefs
Great Barrier Reef
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Global Change Institute Publications
Official 2012 Collection
School of Biological Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 14 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 16 times in Scopus Article | Citations
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