INITIAL INFECTION, DISTRIBUTION, AND SEASONAL OCCURRENCE OF<i>HOFERELLUS GILSONI</i>(MYXOZOA) WITHIN A POPULATION OF<i>ANGUILLA ROSTRATA</i>(ANGUILLIDAE) IN SOUTHERN NOVA SCOTIA
Bibliographic record
Abstract
Recently transformed elvers of Anguilla rostrata, entering the mouth of the East River in the Timber/Connaught Lake watershed (Nova Scotia) from the sea in mid-May, did not develop infections of the urinary bladder parasite Hoferellus gilsoni (Myxozoa) after nearly 3 mo in captivity. However, 40% of elvers collected from the mouth of the river in early June and 80% in late June exhibited patent infections by mid-August. It is speculated that given this initial level of infection, the summer run of elvers (estimated to be 208,000-963,000 individuals annually) represents a significant upstream dispersal of spores. Infections in yellow eel, which has a limited home range, probably contribute to spore dispersal within the home range and downstream through spore drift. Sporogenesis occurred in samples of yellow eel collected over an 8-mo period from April to November. Eel length was similar in 3 widely separated sampling locations in the watershed. Prevalences at these localities were 44, 36, and 57% in April and, by June, reached 76, 70, and 90%, respectively. Prevalences remained near the June levels until sampling ceased in November 1998. Studies on captive fish suggest that H. gilsoni can overwinter in the eel. Data from the study indicate that immediate infection of young elvers entering the system, effective spore dispersal, and a seasonally extended sporogenesis all contribute to the ubiquitous presence of the parasite in the eel population.
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How this classification was reachedexpand
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 | 0.001 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".