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James J. Nagler

James J. Nagler

Professor & Chair and Director, Center for Research on Invasive Species


Life Sciences South 252



Mailing Address

Dept. of Biological Sciences
University of Idaho
875 Perimeter MS 3051
Moscow, Idaho 83844-3051

Research: Cellular & Molecular Biology, Reproductive Biology

  • Ph.D. (1991) Memorial University of Newfoundland

The Nagler laboratory studies the effect of environmental factors, such as contaminants, photoperiod and diet on the reproductive biology of salmonid fishes.

My research training began with a BS degree, in Fish and Wildlife Biology, from the University of Guelph in 1983. This was followed with a MS degree from Concordia University in 1985, in which I investigated the sub-lethal reproductive toxicity of pentachlorophenol in female rainbow trout. I went on to study the physiology of ovarian development in a marine fish, the winter flounder, for my Ph.D. at Memorial University of Newfoundland in 1991. Subsequently, I worked as a research scientist on a variety of projects involving fish reproductive biology, in England and Canada, before joining the faculty at the University of Idaho.

Selected Publications:

  • Nagler JJ, Bangs P, Mederios L, Pierce A (2019) Plasma insulin-like growth factor-1 is unrelated to female reproductive development in a wild population of Dolly Varden charr Salvelinus malma (Walbaum, 1792) Hydrobiologica DOI: 10.1007/s10750-018-3866-7.
  • Jenkins LE, Pierce AL, Graham N, Branstetter R, Hatch DR, Nagler JJ (2018) Reproductive performance and energy balance in consecutive and repeat spawning female steelhead reconditioned in captivity. Trans. Am. Fish. Soc. 147: 959-971.

  • Medeiros LR, Galbreath PF, Knudsen CM, Stockton CA, Koch IJ, Bosch WJ, Narum SR, Nagler JJ, Pierce AL (2018) Plasma 11-ketotestosterone in individual age-1 spring Chinook salmon males accurately predicts age-2 maturation status. Trans. Am. Fish. Soc.147: 1042-1051.

  • Pierce AL, Blodgett JW, Cavileer TD, Medeiros LR, Boyce J, Caldwell LK, Bosch WJ, Branstetter R, Fast DE, Hatch DR, Nagler JJ (2016) Reproductive development in captive reconditioned female steelhead kelts: evidence for consecutive and skip spawning life histories. Can. J. Fish. Aquat. Sci. 10.1139/cjfas-2016-0065.

  • Jia Y, Cavileer T, Nagler JJ (2016) Acute hyperthermic responses of heat shock protein and estrogen receptor mRNAs in rainbow trout hepatocytes. Comp. Biochem. Physiol. Part A 201:156-161.

  • Gillies K, Krone SM, Nagler JJ, Schultz IR (2016) A computational model of the rainbow trout hypothalamus-pituitary-ovary-liver axis. PLOS Comp. Biol. DOI:10.1371/journal.pcbi.1004874


Department of Biological Sciences

Physical Address:
Life Sciences South 252

Mailing Address:
875 Perimeter Drive MS 3051
Moscow, ID 83844-3051

Phone: 208-885-6280

Fax: 208-885-7905


Web: Department of Biological Sciences