Bio
Dr. David Marancik is an Associate Professor of Aquatic Animal Medicine, in the Department of Pathobiology, and is Director of the Aquatic Animal Medicine Research Laboratory. He teaches veterinary pathology and aquatic animal medicine courses. His research focuses on pathology and immunology of aquatic animals with specific interests in exploring biomarkers of disease, infectious disease pathogenesis, and improving disease surveillance and diagnostics.
Prior to joining SGU, Dr. Marancik completed a fellowship at the National Center for Cool and Cold Water Aquaculture and managed the diagnostic laboratory and veterinary services for Fish Vet Group-U.S.
Dr. Marancik earned his DVM from Iowa State University and worked in small animal practice before completing a residency and PhD in aquatic pathology at the University of Georgia.
Research & Interests
- Aquaculture
- Aquatic Animals
- Biomarkers of Disease
- Disease Diagnostics
- Immunology
- Pathology
- Wildlife Veterinary Medicine
- Aquatic pathology
- Aquatic medicine
- Disease pathogenesis
- Biomarkers of disease
Affiliations
- American Association of Fish Veterinarians
- World Aquatic Veterinary Medical Association
- Zebrafish Husbandry Association
- Zoologische Staatssammlung Munchen
- Maintenance of Certification-Fish Medicine, American Board of Veterinary Practitioners
Journal Articles
- Dove A, Clauss T, Marancik D, Camus A. Emerging Diseases of Elasmobranchs in Aquaria. In: Elasmobranch Husbandry Manual II. Columbus Ohio: Ohio Biological Survey, 2017; Pgs 263-277.
- Zwollo P, Hennessey E, Moore C, Marancik D, Wiens G, Epp L. 2017. A BCWD-resistant line of rainbow trout exhibits higher abundance of IgT+ B cells and heavy chain tau transcripts compared to a susceptible line following challenge with Flavobacterium psychrophilum. Developmental and Comparative Immunology. 74:190-199.
- Good C, Davidson J, Iwanowicz L, Meyer M, Dietze J, Kolpin D, Marancik D, Birkett J, Williams C, Summerfelt S. 2017. Investigating the influence of nitrate nitrogen on post-smolt Atlantic salmon Salmo salar reproductive physiology in freshwater recirculation aquaculture systems. Aquacultural Engineering. doi.org/10.1016/j.aquaeng.2016.09.003.
- Marancik D, Palt Y, Guangtu G, Ma H, Hernandez A, Salem M, Yao J, Wiens G. 2014. Whole-body transcriptome of selectively bred, resistant-, control-, and susceptible-line rainbow trout following experimental challenge with Flavobacterium psychrophilum. Frontiers: Genomics in Aquaculture. 5:453.
- Marancik D, Camus M, Camus A, Wiens G. 2014. Biochemical reference intervals and pathophysiologic changes in Flavobacterium psychrophilum resistant and susceptible rainbow trout lines. Diseases of Aquatic Organisms. 111(3):239-248.
- Marancik D, Welch T, Leeds T, Wiens G. 2013. Acute mortality, bacterial load and pathology of select lines of adult rainbow trout challenged with Weissella sp. NC36. Journal of Aquatic Animal Health. 25(4):230-236.
- Marancik D, Fast M, Camus A. 2013. Proteomic characterization of the acute-phase response of yellow stingrays Urobatis jamaicensis after injection with a Vibrio anguillarum-ordalii bacterin. Journal of Fish and Shellfish Immunology. 34(5):1383-1389.
- Marancik D, Wiens G. 2012. A real-time polymerase chain reaction assay for identification and quantification of Flavobacterium psychrophilum and application to disease resistance studies in selectively bred rainbow trout. FEMS Microbiology Letters. 339:122-129.
- Marancik D, Leary J, Fast M, Camus A. 2012. Humoral response of captive zebra sharks Stegostoma fasciatum to salivary gland proteins of the marine leech Branchellion torpedinis. Journal of Fish and Shellfish Immunology. 33(4):1000-1007.
- Marancik DP, Berliner AL, Cavin JM, Clauss TM, Dove ADM, Sutton DA, Wickes BL, Camus AC. 2011. Disseminated fungal infection in two species of captive sharks. Journal of Zoo and Wildlife Medicine. 42(4):686–693.
- Noor-Ul Huda, Older C, Ware C, Heckman T, Rose D, Marancik D, Khoo L, Griffin M. 2025. Complete Genome of Lactococcus lactis Isolate S11-599 from the Brain of a Silver Carp (Hypophthalmichthys molitrix) During an Asian Carp Mortality Event in the Mississippi River. Microbial Research Announcements. Accepted.
- Marancik D, Chadwick C, Fields P, Manire C, Norton T, Perrault J, Cray C. 2025. Evaluation of MRP-126, cardiac troponin C and serum amyloid A as potential plasma biomarkers of health and disease in sea turtles. Conservation Physiology. Accepted.
- Richardson BM, Huda N, Ware C, Camus AC, Older CE, Yamamoto FY, Goodman P, Reifers JG, Walker CM, Stilwell JM, Marancik DP, Wise DJ, Griffin MJ. 2025. Fingerling stocking size has no influence on proliferative gill disease Severity in Farm-raised Channel Catfish (Ictalurus punctatus). Journal of Aquatic Animal Health. Journal of Aquatic Animal Health. 00, 1–10.
- Kucinick M, Charles KE, Carter K, Edwards J, Costlow C, Wilkerson M, Seddon D, Marancik D. 2024. Comparative plasma biochemistry analyte data in nesting leatherback (Dermochelys coriacea), foraging green (Chelonia mydas) and foraging and nesting hawksbill (Eretmochelys imbricata) sea turtles in Grenada, West Indies, Conservation Physiology, Volume 12, Issue 1, 2024, coae028, https://doi.org/10.1093/conphys/coae028
- Schuster CJ, Marancik DP, Couch CE, Kaplan R, Kent M. 2024. A novel neurotropic microsporidium from the swamp guppy Micropoecilia picta from Grenada, West Indies. Diseases of Aquatic Organisms. 158:133-141. doi:10.3354/dao03789.
- Neylan K, Nicklason P, Marancik D, Johnson R. 2023. Evaluating a microalga (Schizochytrium sp.) as an alternative to fish oil in fish-free feeds for sablefish (Anoplopoma fimbria). Aquaculture. (578)2024.
- Charles KE, Morrall CE, Edwards JE, Carter KD, Afema JA, Butler BP, Marancik DP. 2023. Environmental variables affecting Atlantic leatherback sea turtle (Dermochelys coriacea) embryonic and hatching success rates in Grenada, West Indies. Animals (Basel). 13(4):685. doi:10.3390/ani13040685, 2023.
- Wiens GD, Marancik DP, Chadwick CC, Osbourn K, Reid RM, Leeds TD. 2023. Plasma proteomic profiling of bacterial cold-water disease resistant and susceptible rainbow trout lines and biomarker discovery. Frontiers In Immunology. 20(14):1265386.
- Hewson I, Ritchie IT, Evans JS, Altera A, Behringer D, Bowman E, Brandt M, Budd KA, Camacho RA, Cornwell TO, Countway PD, Croquer A, Delgado GA, DeRito C, Duermit-Moreau E, Francis-Floyd R, Gittens S Jr, Henderson L, Hylkema A, Kellogg CA, Kiryu Y, Kitson-Walters KA, Kramer P, Lang JC, Lessios H, Liddy L, Marancik D, Nimrod S, Patterson JT, Pistor M, Romero IC, Sellares-Blasco R, Sevier MLB, Sharp WC, Souza M, Valdez-Trinidad A, van der Laan M, Vilanova-Cuevas B, Villalpando M, Von Hoene SD, Warham M, Wijers T, Williams SM, Work TM, Yanong RP, Zambrano S, Zimmermann A, Breitbart M. A scuticociliate causes mass mortality of Diadema antillarum in the Caribbean Sea. Scientific Advances. 9(16):eadg3200. 2023.
Selected Projects
- Health and disease monitoring of Grenadian leatherback, hawksbill and green turtles
- Pathogen surveillance in lionfish in Grenada: assessing their risk to endemic fish populations
- Exploration of lionfish as sentinel bioindicators of reef health
- Identification and characterization of Grenadian freshwater fish through DNA barcoding
- Development of a sustainable aquaponics industry in Grenada to support the Zero Hunger Initiative
- The effects of an education curriculum on wildlife conservation in school children in Grenada