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Record W7139711670

Fisheries Centre research reports. Volume 32, number 1

2024· report· en· W7139711670 on OpenAlexaff
P. Dalzell, Antony D. Lewis

Bibliographic record

VenuecIRcle (University of British Columbia) · 2024
Typereport
Languageen
Field
Topic
Canadian institutionsUniversity of British Columbia
Fundersnot available
KeywordsAnchovyFishingUpwellingTunaZooplanktonPopulationPlanktonEngraulisYellowfin tuna
DOInot available

Abstract

fetched live from OpenAlex

Two Indo-Pacific anchovy genera (Encrasicholina and Stolephorus) are reviewed with respect to their fisheries, contribution to food security and as important baitfish for tropical pole-and-line fisheries. In the Pacific Islands, the use of stolephorid anchovies has been largely limited to live bait for pole-and-line tuna fisheries. Their inclusion in official catch statistics, however, is spotty at best, and this contribution is meant to partly compensate for this, by providing catch data which will be included in the Sea Around Us database and website. In contrast, stolephorid anchovies form the basis of food cultures from Southeast Asia to the coast of East Africa. They are consumed in varying degrees by 30-50% of the global population, and are eaten fresh, dried and fermented into fish sauce and paste. The majority of the stolephorid anchovies landed are Encrasicholina heteroloba, E. pseudoheteroloba, E. punctifer, Stolephorus indicus, and S. commersonnii. The biology and population dynamics of stolephorids are reviewed based on studies conducted across their geographic range. The members of the two genera are short-lived (1-2 years), fast growing species with high natural mortality rates, for example, as caused by seabirds. Fishing obviously impacts stolephorid anchovy populations, but the dynamics of their populations are also strongly influenced by oceanic and climate effects. A principal driver in coastal lagoons is allochthonous freshwater input that in turn influences plankton production, especially of copepods, with stolephorid spawning tied to periods of zooplankton blooms. Another major influence is from monsoon-driven upwelling of deeper waters that fertilize the upper surface layers. The ocean or buccaneer anchovy, E. punctifer in the Western and Central Pacific Ocean can be found in all stages of life history on the high seas, where they are an important forage for a range of species such as tunas and seabirds. In this they differ from all other stolephorid anchovies, which complete their life cycles in coastal waters.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.002
metaresearch head score (Gemma)0.006
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesInsufficient payload (model declined to judge)
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: Not applicable
GenreCandidate signal: Other · Consensus signal: Other
Teacher disagreement score0.421
Threshold uncertainty score0.601

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0020.006
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0060.008
Science and technology studies0.0010.000
Scholarly communication0.0050.002
Open science0.0010.002
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.5790.533

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.

Opus teacher head0.038
GPT teacher head0.260
Teacher spread0.222 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; the direct Gemma label and the distilled Codex classifier agree on what is shown here.

Study designNot applicable
Domainnot available
GenreOther

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".

Quick stats

Citations0
Published2024
Admission routes1
Has abstractyes

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