Some Aspects of Biology of Bivalves from Kakinada Bay, East Coast of India
Bibliographic record
Abstract
Biological aspects such as maturation, size at first maturity, spawning season, sex ratio, length – weight relationship, age and growth studies of Perna viridis, Crassostrea madrasensis, and Meretrix casta have been carried out during June 2013- May 2015 from Kakinada Bay. A scale of four stages of maturity i.e. maturing, matured, spent and recovery was noticed in the present study. The size at first maturity in females was reported at 7.2 cm, 7.2 cm, and 4 cm length, whereas in males it was reported at 7.2 cm, 8.7 cm, and 4 cm length for P. viridis, C. madrasensis, and M. casta respectively. These bivalves spawn throughout the year with peak spawning season during pre-monsoon in P. viridis, C. madrasensis and M. casta. Females were dominant in the catches of bivalves during the study period. The growth pattern in bivalves indicated that P. viridis and C. madrasensis showed negative allometric growth, while M. casta showed isometric growth. The growth parameters noted were L∞ = 22.4 cm, K= 0.31, to = -0.34 in P. viridis; L∞ = 22.6, K = 0.40, to = -0.43 in C. madrasensis; and L∞ = 7.7, K = 0.20, to = -0.35 in M. casta. The growth rate was high in young bivalves and decreased subsequently towards advancement of age.
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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 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| 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".