Thermal, morpholine, and radiation stressor effects on the embryonic development of lake whitefish (Coregonus clupeaformis) and round whitefish (Prosopium cylindraceum)
Bibliographic record
Abstract
Lake and round whitefish are cold-adapted freshwater species with similar life \nhistories and spawning behaviours. There have been several studies on the embryonic \ndevelopment of both species (particularly for lake whitefish), most utilizing constant \ntemperatures. However, temperatures fluctuate in the field due to natural (e.g. seasonal \nchanges) and anthropogenic (e.g. water discharged from once-through cooling processes) \neffects. Releases from once-through cooling processes may contain low levels of \nchemicals (e.g. morpholine) and radiation (e.g. tritium). This thesis examined and \ncompared the impacts of thermal, morpholine, and radiation stressors on lake and round \nwhitefish embryogenesis. \n To examine the effects of fluctuating incubation temperatures, lake and round \nwhitefish were reared at constant temperatures, with seasonal temperature \ndeclines/inclines, transient temperature spikes, or seasonal temperature changes combined \nwith temperature spikes. Round whitefish embryos had significantly higher mortality \nwhen reared at 8°C compared to lake whitefish, and seasonal temperature changes \nimpacted development rate, growth, and hatch dynamics for both species. Temperature \nspikes had relatively little effect on development. \n The effects on embryonic development of chronic morpholine and low-dose \nradiation exposures were examined in round whitefish to compare with existing data in \nlake whitefish. Round whitefish embryos were more impacted by morpholine than lake \nwhitefish (larger effects on growth and mortality at relatively lower concentrations) and \nv \nless impacted by low-dose radiation (little effect on growth or hatch dynamics). Post \nhatch, round whitefish embryos reared at 8°C, with rapid seasonal inclines, or with 500 \nmg L-1 morpholine had elevated mortality. All irradiated embryos had decreased mortality \npost-hatch compared to non-irradiated embryos. Thus, embryonic exposure to all stressors \nexamined appears to alter post-hatch survival. \nThis thesis better defines the effects of fluctuating incubation temperatures, \nchronic morpholine, and chronic radiation exposures on the embryonic development of \nlake and round whitefish. It also suggests that embryonic incubation conditions are \nimportant beyond hatching.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".