Life history traits of marine Diptera in the Nearctic Pacific
Bibliographic record
Abstract
The generally accepted paradigm maintains that insects are either freshwater or terrestrial, but never marine. Recent research, however, has shown that there are insects adapted to a life within the marine intertidal zone. This study provides evidence of adaptations to specific morphodynamic marine shoreline habitats, including stranded marine algal wrack, surface-substrate cover, and geographical location, among 33 species of British Columbia Diptera reported from marine habitats. A total of 2123 specimens were collected and identified from 96 survey events that also included surveys of algal wrack. Of the 33 marine species examined, 15 demonstrated a statistically significant association with a specific shoreline habitat element. In marine Diptera, variation in algal wrack type may play an important role in maintaining diversity by supporting species differences within and between wrack communities, thereby preventing competitive exclusion, even though overall insect diversity in marine environments remains lower than freshwater or strictly terrestrial habitats. In addition, nine species represent new range records for British Columbia or Canada: Fucellia apicalis Kertesz, 1908, Fucellia thinobia (Thomson, 1869), Tethina horripilans (Melander, 1952), Melanderia mandibulata Aldrich, 1922, Paraphrosylus wirthi (Harmston, 1951), Helcomyza mirabilis Melander, 1920, Heterocheila hannai (Cole, 1921), Chersodromia parallela (Melander, 1927), and Scathophaga litorea (Fallén, 1819).
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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 | 0.001 |
| Science and technology studies | 0.001 | 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".