Abstract


EVALUATING THE CONTRIBUTION OF HOST GENOTYPE, SYMBIODINIUM COMMUNITY, AND BLEACHING HISTORY IN REPEATEDLY BLEACHED ACROPORA CERVICORNIS NURSERIES

Symbiodinium community composition, host genotype, and bleaching history play key roles in determining holobiont thermal tolerance and bleaching susceptibility. The hyperthermal events in both summers of 2014 and 2015 severely affected Acropora cervicornis propogated within South Florida coral nurseries and provided an opportunity to study these factors. These nurseries rigorously track numerous different clones or genets, each containing many clonal individuals or ramets, allowing for study of diverse genotypes. Bi-monthly to monthly sampling of these corals from June 2014 prior to thermal stress through September 2015 tracked these corals through both mass bleaching events. High throughput sequencing has begun to revolutionize the study of coral associated Symbiodinium communities, but it has not yet been applied to temporal studies of coral bleaching recovery, when Symbiodinium communities are most dynamic. We employed high-resolution pair-end Illumina sequencing to track Symbiodinium communities using the cp23S rDNA through time points before, during, and after the bleaching events. Our study evaluates the roles of coral host genotype, Symbiodinium community composition, and bleaching history as potential determinants of bleaching susceptibility. Here we address the relative contributions and interactions of each of these factors. More importantly, this monitoring effort explores the potential for a key reef building coral to adapt or acclimate to increasingly frequent thermal stress imposed by climate change.

http://imageslab.fiu.edu/

Authors

Merselis, D. G., Florida International University, USA, DanielMerselis@gmail.com

Drury, C. R., University of Miami Rosenstiel School, USA

Schopmeyer, S. A., University of Miami Rosenstiel School, USA

Lirman, D., University of Miami Rosenstiel School, USA

Rodriguez-Lanetty, M., Florida International University, USA

Details

Oral presentation

Session #:05
Date: 06/22/2016
Time: 15:15
Location: 313 B

Presentation is given by student: Yes