Re-evaluation of the systematic status of two deep-water recorded Periclimenes species (Decapoda : Palaemonidae), with a preliminary analysis on the evolution of certain echinoid-associated palaemonid shrimps and related taxa
Bibliographic record
Abstract
Periclimenes rectirostris Bruce, 1981 and Periclimenes josephi Li, 2008 are two palaemonid shrimps reported from the deep water in the western Pacific. Prior morphological studies suggest their systematic status might be problematic. Therefore, we attempted to re-evaluate the systematic status of the two species in this study. Based on an analysis incorporating molecular, morphological and ecological data, P. rectirostris is suggested to belong to the genus Sandimenes Li, 2009, but the systematic status of P. josephi is still undetermined due to the polyphyletic state of the genus Zenopontonia Bruce, 1975a. Meanwhile, a preliminary reconstruction of the evolutionary process of the echinoid-associated palaemonid shrimps is presented. Additionally, a well-supported clade mainly comprising the echinoderm or mollusc-associated taxa is recovered, and multiple host shifts are presumed to have occurred during their diversification.
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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 | 0.001 |
| 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 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| 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".