Research Assistant Professor,
Department of Fisheries and Aquatic Sciences
University of Florida
7922 NW 71st Street Gainesville, Florida 32653
Office TELEPHONE #:(352) 392-9617 x 288
Office FAX: (352)-392-3672
E-MAIL: dparkyn@ufl.edu

Professional Goal: To further our state of knowledge on environmental physiology, sensory biology, and ecology of diadromous and migratory marine fishes; groups containing many of the most economically important fishes.

1998. Ph.D., Department of Biology, University of Victoria, Victoria, BC, Canada

1984. B.Sc., Department of Zoology, University of Alberta, Edmonton, AB, Canada

I am currently conducting research into environmental physiology, sensory biology and neuroethology, and ecology of Gulf of Mexico sturgeon (Acipenser oxyrinchus de sotei), white grunt (Haemulon plumieri), red drum (Sciaenops ocellatus), and sheepshead (Archosargus probatocephalus). Research includes:

1. Environmental physiology of diadromous fishes: Metabolic oxygen demand of Gulf sturgeon to changes in water temperature and water velocity. Measurement of annual temperatures encountered by free-ranging Gulf of Mexico sturgeon using temperature recording archival tags.

2. Sensory biology and neuroethology: Coastal light environments and visual function of diadromous and warm-temperate marine fishes. Salinity preference and its implications for success of hatchery introductions of red drum.

3. Fisheries Ecology: Identification of critical winter feeding habitat and movements of Gulf sturgeon. Movements of hatchery introduced red drum using ultrasonic telemetry and recaptures. Age, growth, and population dynamics of reef fishes. Development of non-lethal methods for aging protected and valuable catch and release sport fishes.

PUBLICATIONS:

Peer-Reviewed

Parkyn, DC, Murie, DJ, Harris JE, Colle, DE, and Holloway JD. (In Press). Seasonal riverine and estuarine movements of Gulf of Mexico sturgeon in the Suwannee River, FL and adjacent estuary. In J. Munro, D. Hatin, K. McKown, B. Spear, K. Sulak and J. Hightower (editors). Symposium on anadromous sturgeons, status, and trends, anthropogenic impacts, and essential habitat. Special Publication of the American Fisheries Society.

Parkyn, DC, Murie, DJ, Colle, DE, and Holloway, JD. (2006). Post-release survival and movements of Gulf of Mexico sturgeon following artificially-induced spawning. Journal of Applied Ichthyology  22(2006): 1-7.

Harris, JE, Parkyn, DC, and Murie, DJ. (2005). Distribution of Gulf of Mexico sturgeon in relation to benthic invertebrate prey resources and environmental parameters in the Suwannee River estuary, Florida. Transactions of the American Fisheries Society. 134: 975-990.

Murie, DJ, and Parkyn, DC. (2005). Age and growth of white grunt from the Gulf coast of Florida. Bulletin of Marine Science. 76(1): 73-96.

Sherwood, ET, Murie, DJ, and Parkyn, DC. (2004). Post-release survival of hatchery-reared red drum in the Chassahowitzka National Wildlife Refuge. North American Journal of Fisheries Management. 24: 1469-1479.

Parkyn, D.C., J.D. Austin and C. W. Hawryshyn. (2003). Acquisition of polarised light orientation in salmonids under laboratory conditions. Animal Behaviour. 65: 893-904.

Murie, DJ and Parkyn DC (2002). Total mortality of white grunts in the Eastern Gulf of Mexico. North American Journal of Fisheries Management 22: 806-814.

Parkyn, DC, Murie, DJ, and Sherwood, E.T. (2002). Salinity preference in hatchery-reared red drum. The Scientific World Journal 2: 1326-1331.

Parkyn, DC and Hawryshyn, CW (2000). Spectral and ultraviolet-polarisation sensitivity in juvenile salmonids: a comparative analysis using electrophysiology. Journal of Experimental Biology 203: 1173-1191.

Parkyn, DC and Hawryshyn, CW. (1999). Ethambutol affects the spectral and polarisation sensitivity of on-responses in the optic nerve of rainbow trout. Vision Research 39: 4145-4151.

Murie, DJ, Parkyn, DC, Clapp, BG, and Krause, GG. (1994). Observations on the distribution and activities of rockfish, Sebastes spp., in Saanich Inlet, British Columbia, from the Pisces IV submersible. Fishery Bulletin 92: 313-323.

Parkyn, DC and Hawryshyn, CW (1993). Polarized-light sensitivity in rainbow trout (Oncorhynchus mykiss): Characterization from multi-unit responses in the optic nerve. Journal of Comparative Physiology A 172: 493-500.

Selected Reports

Murie, D.J, DC Parkyn, and ET Sherwood. (2000). Post-release Survival of hatchery-reared red drum in the Chassahowitzka National Wildlife Refuge. Report for Florida Power Corporation, Crystal River and United States Fish and Wildlife Service, FL. 32 pp (Peer-reviewed MS in preparation).

Murie, DJ, and DC Parkyn. (1999). Age, growth, and sexual maturity of white grunt in the eastern Gulf of Mexico: Part II. Final report submitted to Florida Marine Research Institute, St. Petersburg, FL 57 pp.

Murie, DJ, and DC Parkyn. (1998). Total mortality of white grunt in the eastern Gulf of Mexico using catch-curve analysis. Final report submitted to Florida Marine Research Institute, St. Petersburg, FL. 28 pp.

Murie, DJ and DC Parkyn. (1990). Identification and collection of aquatic organisms for chemical investigation (Pacific). Final Report prepared for Dr. J. Wright, Scientific Authority, Atlantic Research Laboratory, National Reseach Council. 39 pp.

Murie, DJ and DC Parkyn. (1990). Identification and collection of aquatic organisms from the east coast of North America. Final Report prepared for Dr. J. Wright, Scientific Authority, Atlantic Research Laboratory, National Reseach Council, 23 pp.

Murie, DJ and DC Parkyn. (1990). Identification and collection of black sponge (Halichondria melanodocia) for okadaic acid. Final Report prepared for Dr. J. Wright, Scientific Authority, Atlantic Research Laboratory, National Reseach Council. 18 pp.

Murie, DJ and DC Parkyn. (1989). Identification and collection of aquatic organisms for chemical investigation (Pacific). Final Report prepared for Dr. J. Wright, Scientific Authority, Atlantic Research Laboratory, National Reseach Council . 32 pp.

Munteanu, N, DJ Murie and DC Parkyn. (1988) Elk/Beaver Lake Watershed-Phase 1: Assessment of present information, 1988. Prepared for the Capital Regional District, Regional Parks Division, Victoria, B.C. 146 pp.