Fish Reproduction Biology
The Nagler Laboratory studies how the environment interacts with reproduction in fishes. A major ongoing study is a partnership with the Columbia River Inter-Tribal Fish Commission (CRITFC) to understand the reproductive physiology of iteroparity in wild, female steelhead trout (steelhead). The main objective is to investigate reproductive performance in female steelhead that elect to consecutively spawn or “skip” a year before spawning again. This research is being conducted as part of a steelhead reconditioning program at Dworshak National Fish Hatchery, in conjunction with CRITFC. Laura Jenkins, a doctoral graduate student candidate, is working on the steelhead project and has been studying life history diversity and the proximate cues that signal entry into a spawning cycle (or not). A second research project, being conducted by MS student Christine Trahan, is examining estrogen receptor subtype function in rainbow trout liver cells using gene knockdown methods.
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
Medeiros LR, Elliott M, Nagler JJ (2015) Stressor timing, not cortisol magnitude, is an important embryo viability determinant in female rainbow trout Oncorhynchus mykiss. J. Fish Biol. DOI:10.1111/jfb.12846
Cavileer T, Hunter S, Olsen J, Wenburg J, Nagler JJ (2015) A sex determining gene (sdY) assay shows discordance between phenotypic and genotypic sex in wild populations of Chinook Salmon Oncorhynchus tshawytscha. Trans. Am. Fish. Soc. 144: 423-430.