Acute toxicity of cadmium, copper, lead and zinc to tiger shrimp Penaeus monodon postlarvae
Bibliographic record
Abstract
The acute toxicity of cadmium, copper, lead and zinc to Penaeus monodon (Tiger prawn) was evaluated in static renewal tests. Each test lasted up to 4 days and 96 hours LC50 values were calculated. The toxicity of each metal increased with exposure time for cadmium, copper, lead and zinc respectively. The 96 hours LC50 values based on the measured concentration for cadmium, copper, lead, and zinc were 1.72, 0.66, 0.41, 2.36 mg/l. Lead was toxic to P.monodon than zinc followed by cadmium and copper tested. The order of toxicity was Pb>Cu>Cd>Zn. Our results found that postlarvae are well protected by both the current CCME Canadian water quality guidelines for the protection of aquatic life, as LC50 values were at least 25 times higher than the guideline concentrations.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.006 | 0.001 |
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; both teacher heads agree on what is shown here.
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".