Morphological and molecular characterization of a new isolate of Steinernema feltiae (Filipjev, 1934) from Vancouver, Canada, with morphometrical comparison with the topotype population from Russia
Why this work is in the frame
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Bibliographic record
Abstract
Steinernema feltiae, strain British Columbia (BC) was collected from Vancouver, Canada. SEM, morphometrical and molecular studies were conducted and the results reported. This article presents the SEM study of different stages of S. feltiae. The significant characteristic found in this study is that the formula of the lateral field of S. feltiae is 2, 7, 8, 7, 4, 2. Morphometric comparison of the new isolate and the topotype population (strain RU from Russia) showed that the body length, distance from anterior end to excretory pore, tail length, and hyaline length are significantly different. Molecular studies of rDNA ITS regions showed that the strain BC is closely related to the topotype of S. feltiae (strain RU) from Russia. Sequence length of strain RU is 980 base pairs compared to 977 base pairs for strain BC. Intraspecific relationships among strains of S. feltiae showed that geographic distribution is associated with the genetic differences, but the differences are not sufficient to delimit new species.
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Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 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) | 0.000 | 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 it