Molecular taxonomy and phylogeny of the ‘living fossil’ lineages <i>Triops</i> and <i>Lepidurus</i> (Branchiopoda: Notostraca)
Why this work is in the frame
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Bibliographic record
Abstract
Mantovani B. Cesari M. & Scanabissi F. (2004). Molecular taxonomy and phylogeny of the ‘living fossil’ lineages Triops and Lepidurus (Branchiopoda: Notostraca). — Zoologica Scripta , 33 , 367–374. European Triops cancriformis and Lepidurus apus were analysed for 12S and 16S mitochondrial genes and compared to North American and Japanese taxa. There are no cryptic species among European T. cancriformis populations , which are highly homogeneous in comparison to conspecific Japanese samples. T. cancriformis differs from congeneric taxa all over its range, which can be explained by its antiquity. In contrast, the parapatric subspecies L. apus apus and L. apus lubbocki are morphologically conserved and differ substantially at the mtDNA level. The genetic distance values between them are of the same order of magnitude as those observed between American Lepidurus species. Their subspecific status therefore requires further analysis. L. apus apus is more closely related to a L. arcticus sample from Iceland than to L. apus lubbocki . It is also related to a Canadian L. couesii population. Further analyses of populations from the whole range of L. arcticus and the European range of L. couesii are needed to understand the relationships among these notostracan taxa. When considering the two genera, it is clear that Lepidurus is a well supported monophyletic unit, while Triops is polyphyletic, embodying very divergent taxa.
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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 | 0.001 |
| 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