Discoloration of the Cephalothorax in <i>Pandalus borealis</i> and its Correlation with Internal Cadmium Concentration
Bibliographic record
Abstract
Abstract This study investigates the correlation between discoloration of the cephalothorax in Pandalus borealis ( P. borealis ) shrimp and cadmium concentration. The data, obtained through Atomic Absorption Spectroscopy (AAS), was converted into weight-based cadmium concentrations and analyzed using both parametric and non-parametric statistical tests. Despite assumptions of normal distribution not being met, a two-sample Student’s t-test and Mann-Whitney test were performed to examine the differences in cadmium concentrations between pink and discolored shrimp. Results indicated no statistically significant differences between the two groups. Experimental analysis revealed considerable overlap in cadmium concentration ranges for both groups, with high standard deviations. Factors such as the period of exposure to cadmium and potential influences from other contaminants or microorganisms were also considered. Previous studies have linked discoloration in shrimp to heavy metals and infections, but this study found no correlation between cadmium concentration and discoloration in P. borealis . The conclusion suggests that cadmium may not be a sole factor in shrimp discoloration, and other variables should be explored. Recommendations for future research include examining other trace metals, microbial infections, shrimp age, and extent of exposure to provide a comprehensive understanding of cephalothorax discoloration in shrimp.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".