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Annual changes in testicular activity and plasma steroid hormones in the golden rabbitfish Siganus guttatus (Bloch)

2000· article· en· W1983146376 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

fundA Canadian funder is recorded on the work.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueFisheries Science · 2000
Typearticle
Languageen
FieldBiochemistry, Genetics and Molecular Biology
TopicReproductive biology and impacts on aquatic species
Canadian institutionsnot available
FundersUniversity of the RyukyusUniversity of British Columbia
KeywordsBiologyGonadosomatic IndexSpermSpermatogenesisHormonePeriod (music)Internal medicineTestosterone (patch)EndocrinologyReproductive biologyAndrologyFisheryEmbryogenesisPopulationEmbryoFecundity

Abstract

fetched live from OpenAlex

Characteristics in annual reproductive activity of the male golden rabbitfish, Siganus guttatus, were examined by observing testicular histology and measuring plasma levels of steroid hormones, testosterone (T), 11-ketotestosterone (11-KT), and 17α, 20β-dihydroxy-4-pregnen-3-one (DHP) by enzyme immunoassay (EIA). The testicular development was divided into four periods: immature (November-March); pre-spawning (April-May); spawning (June-July); and post-spawning (August-October). The immature period was associated with low gonadosomatic index (GSI) values, and the testicular lobules were exclusively occupied by spermatogonia. In the pre-spawning period the testes were characterized by a new generation of spermatogenic cells. Spermatozoa appeared in some testes at the beginning of that period, and became dominant in the testes and the sperm duct in the spawning period. In the post-spawning period, only spermatogonia were observed in the testis, but residual spermatozoa were still observed in the seminal lobules and the sperm duct. Plasma T, 11-KT and DHP levels simultaneously increased during the pre-spawning period, rose markedly at the spawning period, and remained low from the post-spawning to immature periods, suggesting that these changes apparently were related to the annual testicular activity in S. guttatus.

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.

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.001
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.798
Threshold uncertainty score0.459

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.001
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.011
GPT teacher head0.235
Teacher spread0.223 · 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