Results of acute and chronic exposure of rainbow trout and warm water fish to metals and other toxicants.

We investigated whether the length of time fire chemical weathers on a terrestrial substrate before mixing into aquatic environments alters the chemical’s toxicity when encountered by juvenile rainbow trout. We also looked at whether the type of substrate where the chemical is applied affects its toxicity to juvenile rainbow trout after mixing into water. Two fire chemicals (Phos Chek LC95A-R and Phos Chek MVP-Fx) were applied to four substrate media (low organic content soil, high organic content soil, duff, and gravel) and allowed to age on the substrate for 7, 14, 28 or 56 days. At the end of the assigned weathering period, 96-hour assays were conducted by adding water to the dosed substrate and stocking each experimental unit with juvenile rainbow trout. The fish were added to the experimental units after allowing the substrate to settle for 60 minutes. Water chemistry parameters were measured at the initiation of each assay, including water temperature, dissolved oxygen, specific conductance, pH, alkalinity, hardness, and total ammonia. Observations on mortality of rainbow trout were made daily and dead fish were removed upon discovery. The experiment concluded 96 hours after fish entered the experiment.

Detailed data and analysis supporting manuscript Dietary uptake of highly hydrophobic chemicals by rainbow trout. This dataset is associated with the following publication: Burkhard, L., T. Lahren, K. Hanson, A. Kasparek, and D. Mount. Dietary Uptake of Highly Hydrophobic Chemicals by Rainbow Trout (Oncorhynchus Mykiss). ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY. Springer, New York, NY, USA, 85(4): 390-403, (2023).

This dataset is composed of a single data table containing survival data and ancillary measurements for brook trout bioassays conducted in streams of the Western Adirondack Mountains during 2001-03 and 2015-17. At each stream site, 4 replicate bottles, each containing five young-of-year brook trout, are exposed to ambient stream waters for approximately one month during spring.

This dataset is composed of a single data table containing survival data and ancillary measurements for brook trout bioassays conducted in streams of the Western Adirondack Mountains during 2001-03 and 2015-17. At each stream site, 4 replicate bottles, each containing five young-of-year brook trout, are exposed to ambient stream waters for approximately one month during spring.

This dataset provides exposure and effects data for two experiments regarding the dietborne toxicity of inorganic arsenic and selected organoarsenicals on rainbow trout survival and growth. There are separate spreadsheets for the two experiments, at the replicate exposure chamber level, of measured fish weights and survival and calculated growth metrics. Each spreadsheet provides footnote descriptions of the data and calculations provided. Descriptions of experimental protocols are also provided as supporting documents. This dataset is associated with the following publication: Erickson, R., D. Mount, T. Highland, R. Hockett, D. Hoff, C. Jenson, and T. Lahren. The effects of arsenic speciation on accumulation and toxicity of dietborne arsenic exposures to rainbow trout.. AQUATIC TOXICOLOGY. Elsevier Science Ltd, New York, NY, USA, 210: 227-241, (2019).

We determined the acute toxicity of four wildland fire retardants (Phos-Chek 259-Fx, Phos-Chek MVP-Fx, and Phos-Chek LC-95A-Fx, and Phos-Chek LC-95A-R) to two life stages (swim-up fry and young juveniles) of rainbow trout in standardized hard and soft water. The measure of acute toxicity was expressed as both the 96-hour median lethal concentration (96-h LC50, based on mortality) and 96-h median effective concentration (EC50, based on mortality, plus loss of equilibrium and immobilization), which are statistically derived concentrations expected to kill or kill and severely impair, respectively, 50 percent of the test fish in 96 hours. This data set includes the concentration-response data at 24, 48, 72, and 96 hours of exposure for each chemical and measured concentrations of total ammonia in each treatment at 0 and 96 hours. Also included are supportive water quality data measured in each treatment at 0, 48, and 96 hours of exposure and total length and wet weight of the control fish at the end of each test.

We determined the acute toxicity of four wildland fire retardants (Phos-Chek 259-Fx, Phos-Chek MVP-Fx, and Phos-Chek LC-95A-Fx, and Phos-Chek LC-95A-R) to two life stages (swim-up fry and young juveniles) of rainbow trout in standardized hard and soft water. The measure of acute toxicity was expressed as both the 96-hour median lethal concentration (96-h LC50, based on mortality) and 96-h median effective concentration (EC50, based on mortality, plus loss of equilibrium and immobilization), which are statistically derived concentrations expected to kill or kill and severely impair, respectively, 50 percent of the test fish in 96 hours. This data set includes the concentration-response data at 24, 48, 72, and 96 hours of exposure for each chemical and measured concentrations of total ammonia in each treatment at 0 and 96 hours. Also included are supportive water quality data measured in each treatment at 0, 48, and 96 hours of exposure and total length and wet weight of the control fish at the end of each test.

We determined the acute toxicity of four wildland fire retardants (Phos-Chek 259-Fx, Phos-Chek MVP-Fx, and Phos-Chek LC-95A-Fx, and Phos-Chek LC-95A-R) to two life stages (swim-up fry and young juveniles) of rainbow trout in standardized hard and soft water. The measure of acute toxicity was expressed as both the 96-hour median lethal concentration (96-h LC50, based on mortality) and 96-h median effective concentration (EC50, based on mortality, plus loss of equilibrium and immobilization), which are statistically derived concentrations expected to kill or kill and severely impair, respectively, 50 percent of the test fish in 96 hours. This data set includes the concentration-response data at 24, 48, 72, and 96 hours of exposure for each chemical and measured concentrations of total ammonia in each treatment at 0 and 96 hours. Also included are supportive water quality data measured in each treatment at 0, 48, and 96 hours of exposure and total length and wet weight of the control fish at the end of each test.