Functional Morphology and Structural Variability in <i>Lernaeenicus</i> (Copepoda: Pennellidae) Parasitic on Teleost Fishes from the Northwest Atlantic Ocean
Bibliographic record
Abstract
The morphology of 3 species of Lernaeenicus: Lernaeenicus affixus, Lernaeenicus longiventris, and Lernaeenicus radiatus, mesoparasitic copepods of fishes from the Atlantic coast of North America, is documented. There was significant structural variability in the cephalothorax and holdfast horn complex on the anterior embedded end between individuals in all 3 species. The functional morphology of holdfast structures of the parasites was influenced by the requirements for adequate anchoring in host tissues and was related to the types of tissues and host species infected: attachment directly to bone by individual L. affixus produced lamellae and short, unbranched holdfasts; the hammer-shaped cephalothorax provided with short holdfasts exhibited by members of L. longiventris was found in hard, dense musculature; and elongate, dendritic holdfasts of specimens of L. radiatus were found in soft muscle. Based on morphological characteristics, L. longiventris, L. affixus, and L. radiatus are considered as separate and distinct species even though the latter 2 are similar in size and appendage structure and infect the same species and individual fish hosts. All 3 species are described from specimens in the collection of the United States National Museum.
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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 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".