Joshua Voss, PhD | Harbor Branch Oceanographic Institute | Florida Atlantic University | 5600 US 1 North, Fort Pierce, FL 34946 | Lab Phone: 772-242-2393
Coral Reef Health and Ecology Lab
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New paper from the Voss Lab: Depth influences Symbiodiniaceae associations among Montastraea cavernosa corals on the Belize Barrier Reef

4/9/2020

 
We are excited to share our most recent article "Depth influences Symbiodiniaceae associations among Montastraea cavernosa corals on the Belize Barrier Reef" which was just published in Frontiers in Microbiology. This work was led by graduate student Ryan Eckert, and was part of his Master's Thesis at FAU Harbor Branch.
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For this study we identified the microscopic dinoflagellate algae (Family Symbiodiniaceae) found within M. cavernosa colonies across a depth gradient from 10–35 m. ​All M. cavernosa sampled were previously genotyped (Eckert, Studivan, and Voss 2019) and we found a strong genetic break between deep (25 and 35 m) and shallow (10 and 16 m) populations. We used the ITS2 ​region of Symbiodiniaceae ribosomal coding DNA and the newly-developed SymPortal (Hume et al. 2019) analysis frame work to identify putatitve Symbiodiniaceae taxa associated with these previously genotyped corals.

Shallow and deep M. cavernosa populations in our Belize study sites harbored different Symbiodiniaceae. Shallow populations had much more variable Symbiodiniaceae compared to deep populations. Notably, this split follows a similar trend to the host population genetic structure, with differences between shallow populations (back reef/ reef crest) and deeper populations (fore reef/ reef wall).
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This collaborative project involved  multiple student co-authors, including PhD student Lexie Sturm and Link Intern Ashley Reaume. This work was funded by awards from NOAA Office of Ocean Exploration to the Cooperative Institute for Ocean Exploration, Research and Technology (CIOERT) and a donation from the Banbury Fund in memory of John and Andreija Robertson and a donation from the River Branch Foundation.  We are also grateful to our colleagues at the Smithsonian Caribbean Coral Reef Ecosystems Program who helped to facilitate this research.
The full article is open-access and can be downloaded here.

Congratulations and great work Ryan and team!

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