Timothy Bowden

Associate Professor of Aquaculture

Degree: Ph. D. 1999, University of Aberdeen, Scotland
Phone: 207.581.2772
Email: timothy.bowden@maine.edu
Location: 237 Hitchner Hall

Professional Interests: Aquatic animal health, disease resistance in shellfish, effective treatments for shellfish disease, use of probiotics to improve animal health, immune development in larval aquatic organisms.

Teaching:AVS/SMS 211 Introduction to Aquaculture, AVS411 Advanced Aquaculture, SMS401 Critical Issues in Aquaculture (rotating topics; bacterial & viral pathogens in aquaculture, vaccinology, and environmental impacts on aquaculture)

Research: Dr. Bowden’s current research interests cover a number of areas.  Host/pathogen interactions – how does a pathogen gain entry into an aquatic animal host and how does that host respond. He is involved with both vertebrate and invertebrate species and with bacterial, viral and parasite pathogens. Basic immunology of aquatic animals; scallops, yellowtail, lumpfish, oysters, razor clams, lobsters and seahorses. Environmental impacts on aquatic animals, with a special focus on health impacts. How does an aquatic animal cope with changes in its environment such as temperature, salinity or acidity. He also has a special interest in biological clocks and seasonality, an issue of specific importance to more temperate species. It is clear that animal physiology and behavior are affected by the change in season, but how does this impact their health. How do they sense the changing season? What is the method of molecular transduction that responds to an environmental change and leads to a physiological change in the animal?

Recent Publications:

Ishaq SL, Hosler S, Dankwa A, Jekielek P, Brady DC, Grey E, Haskell H, Lasley-Rasher R, Pepperman K, Perry J, Beal B, Bowden TJ. 2023. Bacterial community trends associated with sea scallop, Placopecten magellanicus, larvae in a hatchery system. Aquaculture Reports Vol 32, 101693. DOI: 10.1016/j.aqrep.2023.101693

Bowden TJ, Kraev I & Lange S. 2020. Extracellular Vesicles and Post-Translational Protein Deimination Signatures in Mollusca The Blue Mussel (Mytilus edulis), Soft Shell Clam (Mya arenaria), Eastern Oyster (Crassostrea virginica) and Atlantic Jacknife Clam (Ensis leei). Biology Vol. 9, No. 12, pp. 416, doi: 10.3390/biology9120416

Bricknell IR, Birkel SD, Brawley SH, Van Kirk T, Hamlin HJ, Capistrant‐Fossa K, Huguenard K, Van Walsum GP, Liu ZL, Zhu LH, Grebe G, Taccardi E, Miller M, Preziosi BM, Duffy K, Byron CJ, Quigley CTC, Bowden TJ, Brady D, Beal BF, Sappati PK, Johnson TR & Moeykens S. (2020). Resilience of cold water aquaculture: a review of likely scenarios as climate changes in the Gulf of Maine. Reviews in Aquaculture. Vol. 13, No. 1 pp460-503. doi: 10.1111/raq/12483

Bowden TJ, Preziosi BM & Bricknell IR. 2018. Comparative susceptibility of juvenile Atlantic halibut (Hippoglossus hippoglossus) to different isolates of Vibrio sp. and Aeromonas salmonicida subsp. achromogenes. Journal of Fish Diseases, 41(1): 79-86

Dickey G, Messerman NA & Bowden TJ. 2017. Prevalence of the protozoan parasite Haplosporidium nelsoni in the eastern oyster, Crassostrea virginica, within the Damariscotta River Estuary, in Maine, USA, in 2014 and 2016 as measured by PCR. Bulletin of the European Association of Fish Pathologists, 37(6): 235-243

Bowden TJ. 2017. The humoral immune systems of the American lobster (Homarus americanus) and the European lobster (Homarus gammarus). Fisheries Research, 186 (part 1): 367-371

Messerman NA & Bowden TJ. 2016. Survey of potential reservoir species for the oyster parasite MSX (Haplosporidium nelsoni) in and around oyster farms in the Damariscotta River Estuary, Maine, USA. Journal of Shellfish Research, 35(4): 851-856

Makrinos DL. and Bowden TJ. 2016. Growth characteristics of the intracellular pathogen, Piscirickettsia salmonis, in tissue culture and cell-free media. Journal of Fish Diseases, 40(8): 1115-1127

Makrinos DL, Bowden TJ. 2016. Natural environmental impacts on teleost immune function. Fish & Shellfish Immunology, 53: 50-57

Preziosi BM, Bowden TJ. 2016. Morphological characterization via light and electron microscopy of Atlantic jackknife clam (Ensis directus) hemocytes. Micron, 84 (May 2016): 96-106.

Ridgway, I.; Bowden, T.J.; Roman-Gonzalez, A.; Richardson, C.A. 2014. Resistance to oxidative stress is not associated with the exceptional longevity of the freshwater pearl mussel, Margaritifera margaritifera nor three unionid species.  Aquatic Sci. 76:259-267.

Messerman, N.A.; Johndrow, K.E.; Bowden, T.J. 2014. Prevalence of the protozoan parasite in the Eastern oyster, Crassostrea virginica,within the Damariscotta River Estuary, in Maine, USA in 2012. Bull. Eur. Assoc. Fish Path. 34:54-62.

Bowden, T.J.; Bricknell, I.R. 2013.  Management of finfish and shellfish larval health in aquaculture hatcheries. In: Allan, G.; Burnell, G. (Eds) Advances in Aquaculture Hatchery Technology. Issue pp:223-245.