Stock Assessment of Heavybeak Parrotfish Scarus gibbus (Ruppell, 1829) (Family: Scaridae) off Tuticorin Coast, India (08°53.6’N, 78°16’E and 08°53.8’N, 78°32’E) – 36M
Bibliographic record
Abstract
The commercial important coral reef fishes viable source, re-aggregating, have been exploited coral reef parrot fish in pears coast of Gulf of Mannar. Its beautifully colour parrot fish reported between ranges 08°53.6’N, 78°16’E and 08°53.8’N, 78°32’E at a depth of 36 m. The parrot fishing of natural mortality (M), fishing mortality (F) and total mortality (Z) was calculated at 0.47, 0.40 and 0.87, respectively. Growth equation based on modified von Bertalanffy’s equation and Ford-Walford graph was arrived. The growth parameters such as L∞ = 104.50 cm and K = 0.23 was estimated combining both sexes. Length and weight frequency data obtained from the growth equation, has been dealing with S. gibbus attains the length of 21.96, 39.21, 51.76, 62.74, 70.58, 77.64 and 83.13 mm during first and seventh year respectively. The spawning peaks one in December and another in April could be observed. The life span of S. gibbus was estimated for seven years. The exploitation ratio of 0.46 indicated that the resource of S. gibbus is currently exploited along the Tuticorin coast. Heavy fishing pressure on the length group 6 to 81 cm revealed that S. gibbus in Tuticorin waters suffer due to recruitment overfishing. The present level of exploitation rate and exploitation ratio (F/Z) is estimated at 0.46 and 0.5 respectively. The average length of parrot fish, the beginning capture (Lc) was calculated as 20.0 cm. The total stock, average annual stock and maximum sustainable yield were estimated as 35.150 tonnes, 9.385 tonnes and 10.206 tonnes respectively. Virtual Population Analysis have been assessing the mortality ranges from 85 cm. The parrot fish study shows that the further stressed that strict management measures need to be undertaken to conserve this species from further to avoid exploitation and to restore the biodiversity of heavybeak parrotfish population of Gulf of Mannar in general and Tuticorin coast in particular.
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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 | 0.000 | 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".