Symbiodinium (Dinophyceae) diversity in reef-invertebrates along an offshore to inshore reef gradient near Lizard Island, Great Barrier Reef

Tonk, Linda, Sampayo, Eugenia M., LaJeunesse, Todd C., Schrameyer, Verena and Hoegh-Guldberg, Ove (2014) Symbiodinium (Dinophyceae) diversity in reef-invertebrates along an offshore to inshore reef gradient near Lizard Island, Great Barrier Reef. Journal of Phycology, 50 3: 552-563. doi:10.1111/jpy.12185


Author Tonk, Linda
Sampayo, Eugenia M.
LaJeunesse, Todd C.
Schrameyer, Verena
Hoegh-Guldberg, Ove
Title Symbiodinium (Dinophyceae) diversity in reef-invertebrates along an offshore to inshore reef gradient near Lizard Island, Great Barrier Reef
Formatted title
Symbiodinium (Dinophyceae) diversity in reef-invertebrates along an offshore to inshore reef gradient near Lizard Island, Great Barrier Reef
Journal name Journal of Phycology   Check publisher's open access policy
ISSN 0022-3646
1529-8817
Publication date 2014-06
Year available 2014
Sub-type Article (original research)
DOI 10.1111/jpy.12185
Open Access Status
Volume 50
Issue 3
Start page 552
End page 563
Total pages 12
Place of publication Hoboken NJ, United States
Publisher Wiley-Blackwell Publishing
Collection year 2015
Language eng
Formatted abstract
Despite extensive work on the genetic diversity of reef invertebrate-dinoflagellate symbioses on the Great Barrier Reef (GBR; Australia), large information gaps exist from northern and inshore regions. Therefore, a broad survey was done comparing the community of inshore, mid-shelf and outer reefs at the latitude of Lizard Island. Symbiodinium (Freudenthal) diversity was characterized using denaturing gradient gel electrophoresis fingerprinting and sequencing of the ITS2 region of the ribosomal DNA. Thirty-nine distinct Symbiodinium types were identified from four subgeneric clades (B, C, D, and G). Several Symbiodinium types originally characterized from the Indian Ocean were discovered as well as eight novel types (C1kk, C1LL, C3nn, C26b, C161a, C162, C165, C166). Multivariate analyses on the Symbiodinium species diversity data showed a strong link with host identity, consistent with previous findings. Of the four environmental variables tested, mean austral winter sea surface temperature (SST) influenced Symbiodinium distribution across shelves most significantly. A similar result was found when the analysis was performed on Symbiodinium diversity data of genera with an open symbiont transmission mode separately with chl a and PAR explaining additional variation. This study underscores the importance of SST and water quality related variables as factors driving Symbiodinium distribution on cross-shelf scales. Furthermore, this study expands our knowledge on Symbiodinium species diversity, ecological partitioning (including host-specificity) and geographic ranges across the GBR. The accelerating rate of environmental change experienced by coral reef ecosystems emphasizes the need to comprehend the full complexity of cnidarian symbioses, including the biotic and abiotic factors that shape their current distributions.
Keyword Coral reefs
Great Barrier Reef
ITS2
Symbiodinium
Symbiosis
Coral-algal symbioses
Scleractinian corals
Genus Symbiodinium
Bleaching event
Climate-Change
Endosymbionts zooxanthellae
Soritid foraminifera
Seriatopora-hystrix
West Pacific
Host
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 2015 Collection
School of Biological Sciences Publications
 
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