Cory J. Krediet

Assistant Professor of Marine Science and Biology

James Center for Molecular and Life Sciences 124
727-864-7727, Fax: 727-864-7964


Interdisciplinary Ecology, Microbiology
Ph.D., University of Florida, 2012

Cory Krediet

Research Interests

My research interests lie in host-microbe interactions and specifically how mutualistic or commensal microbiota influence the host’s physiologic response to various abiotic and biotic stressors. These types of interactions are present in a wide array of systems ranging from humans and other vertebrates, to invertebrates and to plants. Tropical corals and the sea anemone Aiptasia, form mutualistic symbioses with dinoflagellate algae (in the genus Symbiodinium) and other microbial partners (bacteria, archaea, viruses, and fungi). Our understanding of all stages of this symbiosis (onset and establishment, maintenance, and breakdown) is extremely limited, which allows us to ask many exciting and challenging questions. I joined the faculty at Eckerd College in 2016 and my research aims to better understand how associated microbiota affect the physiology of the coral holobiont and what mechanisms underpin the overall success of the symbiosis. I regularly involve undergraduate students as assistants in my research.

Courses Taught

  • BI 314 Comparative Physiology
  • MS 102 Biological Oceanography
  • MS 289: Marine Invertebrate Biology
  • MS 332 Coral Reefs
  • MS2 410 Marine Science Seminar – Marine Symbioses
Professor Krediet looking into microscope

Photo: Anna Bilich ’19

Select Publications

  1. Esherick LY, DeNofrio JC, Krediet CJ, Xiang T, Tolleter D, Grossman AG, Pringle JR.   The role of host and symbiont genotype in the thermal tolerance of a model cnidarian-dinoflagellate symbiosis. In review at Coral Reefs
  2. Krediet CJ, DeNofrio JC, Caruso CX, Burriesci MS, Cella K, Pringle JR.   Rapid, precise, and accurate counts of Symbiodinium cells using the Guava flow cytometer, and a comparison to other methods. PLoS ONE 10(8): e0135725.
  3. Pollock FJ, Krediet CJ, Garren, M, Stocker R, Winn K, Wilson B, Huete-Stauffer C, Willis BL, Bourne, DG.   Visualization of coral host-pathogen interactions using a stable GFP-labeled Vibrio coralliilyticus strain. Coral Reefs 34: 655-662.
  4. Krediet CJ, Meyer JL, Gimbrone N*, Hoffman W, Yanong R, Berzins I, Alagely A*, Castro H, Ritchie KB, Paul VJ, Teplitski M.   Interactions between the tropical sea anemone Aiptasia pallida and Serratia marcescens, an opportunistic pathogen of corals.  Env Microbiol Reports 6: 287-292.
  5. Zaragoza WJ, Krediet CJ, Meyer JL, Canas G, Ritchie KB, Teplitski M.   Outcomes of infections of a sea anemone Aiptasia pallida with Vibrio spp pathogenic to corals.  Microb Ecol 68: 388-396.
  6. D, Seneca FO, DeNofrio JC, Krediet CJ, Palumbi, SR, Pringle JR, Grossman AR.   Coral bleaching independent of photosynthetic activity.  Curr Biol 23: 1782-1786.
  7. Krediet CJ, Ritchie KB, Paul VJ, Teplitski M.   Coral-associated microorganisms and their roles in promoting coral health and thwarting diseases.  Proc Roy Soc B 280: 20122328.
  8. Krediet CJ, Ritchie KB, Alagely A*, Teplitski M.   Members of native coral microbiota thwart colonization of coral mucus by an opportunistic pathogen.  ISME J 7: 980-990.
  9. Krediet CJ.   Coral Reefs: Biology and Value.  Reusable Learning Object. EcoLearnIt RLO#50.  Available at:
  10. Krediet CJ, Ritchie KB, Cohen M, Alagely A*, Lipp E, Sutherland K, Teplitski M.   Utilization of mucus from the coral Acropora palmata by environmental and pathogenic isolates of Serratia marcescensAppl Environ Microbiol 75: 3851-3858.

*Denotes undergraduate co-author