Diversity of the genus <i>Daphniopsis</i> in the saline waters of Australia
Bibliographic record
Abstract
Although members of the cladoceran genus Daphniopsis form a dominant element of the fauna in the saline inland waters of Australia, their taxonomy has been in flux. In this study allozyme analysis was employed to examine the diversity, distributions, and reproductive biology of species in this genus. The results establish that D. pusilla, a species formerly thought to be widespread, is restricted to Western Australia, while a newly described species, D. truncata, which shares the attribute of producing a one-egged ephippium, is broadly distributed. The results of this study verify the taxonomic validity of the three recognized species of Daphniopsis, which produce two-egged ephippia, but another member of this group, D. wardi, is described from Western Australia. All populations were found to reproduce by cyclic parthenogenesis, except for one obligately asexual population of D. pusilla × D. truncata hybrids. No other case of hybridization was detected, although two species co-occurred in 15% of habitats. The six species of Daphniopsis now known from Australia appear to represent another example of an endemic radiation in the saline lakes of this continent.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 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) | 0.001 | 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".