PRELIMINARY RESULTS OF FIRST PILOT PROJECT TO ASSESS THE BIOLOGICAL ADAPTABILITY AND ZOOTECHNICAL PERFORMANCE OF THE DUSKY GROUPER (Epinephelus marginatus) IN NORTHEASTERN BRAZIL
Bibliographic record
Abstract
This note records the preliminary results obtained during the course of the first pilot project to investigate the adaptability and zootechnical performance of dusky grouper Epinephelus marginatus in northeastern Brazil. The project started with first juvenile transport from Prime Seafood Marine Farm, Alcobaça – BA - Brazil, to Mirante Pescados, Cascavel – CE – Brazil, and is running with individuals maintained in a float net cage, enclosed in a frame tank padded with plastic liner, with a land-based Recirculating Aquaculture System (RAS). The biological adaptation was evaluated by fish survival and feed intake. Growth performance by zootechnical indexes was estimated through biometric measurements. During this initial report period (14th November 2021 to 9th February 2022) fish were hand-fed twice daily (8:00 a.m. and 5:00 p.m.) at a rate of 1.5 % total biomass. The water quality parameters were monitored regularly, at least once a week, and commercial probiotic was added to the water tank. Water quality remained in the range tolerable for the species and to February 2022, survival is 100%. The feeding behavior has been immediate consumption of all offered food, demonstrating the biological adaptability of the dusk grouper. Over the 87-days report period, the juveniles showed a significant (P < 0.05) improvement in growth performance and reached an average weight and length of 290.2 ± 4.7 g and 25.03 ± 0.1 cm. Likewise, the mean apparent food ration converse and specific growth rate were 1.33 and 0.77 (% -day). The preliminary pilot project has already accomplished the first successful transport of groupers to Ceará – Brazil; attest the ability of the dusky grouper E. marginatus to be adapted to a new hot and dry environment and the preliminary growth performance indicates there is great potential of dusky grouper production in northeastern Brazil. Keywords: Mariculture, marine finfish, fish farming.
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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 | 0.001 |
| 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) | 0.000 | 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".