Mikrocytos donaxi Garcca & Haond & Chollet & Nerac & Omnes & Jols & Dubreucl & Serpcn & Langlade & Gal & Terre-Terrcllon & Courtocs & Gucchard & Arzul 2018, n. sp.
Bibliographic record
Abstract
Mikrocytos donaxi n. sp. Type-host: Donax trunculus Linnaeus, 1758 (Mollusca, Bivalvia, Heterodonta, Veneroida, Tellinoidea, Donacidae). Type-locality: Atlantic coast of France: Audierne Bay (47.85°N, 4.35°W). Type-material: Fixed tissues (foot and mantle, accession No. 11/089/06, 11/089/25 and 11/089/27) infected with Mikrocytos donaxi n. sp. have been deposited at the OIE Reference Laboratory for infection with Mikrocytos mackini: Pacific Biological Station, Aquatic Animal Health Section, 3190 Hammond Bay Road, Nanaimo, British Columbia V 9 T 6 N7, Canada. Representative DNA sequences: Nucleotide sequences of partial 18S DNA region have been submitted in the GenBanc database under the accession numbers KY923804 – KY923807 as well as a nucleotide sequence of the ITS1-5.8S-ITS2 DNA region (accession number: KY923808). ZooBank registration: To comply with the regulations set out in article 8.5 of the amended 2012 version of the International Code of Zoological Nomenclature (ICZN) [49], details of the new species have been submitted to ZooBanc. The Life Science Identifier (LSID) of the article is urn:lsid:zoobanc.org:pub: E1747954-CBDF-4F4A-BA22- E1C3CD1776BD. The LSID for the new name Mikrocytos donaxi is urn:lsid:zoobanc.org:act: 307DFFED-D663- 4ACA-A9AF-F98FC90B0896. Etymology: The specific epithet refers to the genus of the host Donax trunculus. Description [Based on 20 specimens.] Oval to round parasites (Fig. 3) measuring 1.84 – 3.20 × 1.07 – 2.42 (2.52 ± 0.18 × 1.76 ± 0.13) μm with a nucleus of 0.68 – 1.38 × 0.59 – 1.09 (1.15 ± 0.08 × 0.85 ± 0.07) μm (Table 2). Uninucleate cell with eccentric nucleus variable in form (Fig. 8a). Intracellular or extracellular parasite of myocytes and vesicular cells of mantle, foot, adductor muscles, nerves (Fig. 3b, c) and also, in vesicular cells of digestive gland, gills and gonads. No mitochondria noted inside parasite cytoplasm. Parasite cells often surrounded by mitochondria and sometimes, observation of depression of parasite membrane (Fig. 8b). No plasmodial or spore stage noted. Only dense form observed with very granulous cytoplasm (Fig. 8a). Remarks Mikrocytos donaxi n. sp. presented the same morphological characteristics as M. veneroïdes n. sp. except for some particular traits. The nucleus of M. donaxi n. sp. seemed more frequent in eccentric position than in M. veneroïdes n. sp. Another difference in terms of size was also observed between these two species: M. donaxi n. sp. seemed smaller than M. veneroïdes n. sp. The close association with mitochondria was also noted for M. donaxi n. sp. as for M. veneroïdes n. sp. and for both parasites, in rare cases (observed in two parasite cells from Quiberon Bay and Audierne Bay), a mitochondrion appeared to be inside the cytoplasm of the microcell (Fig. 7c). M. donaxi n. sp. presented dense forms similar to those of M. veneroides n sp. but no clear forms were observed contrary to M. veneroïdes n. sp. The different uninucleate stages (quiescent, endosomal and vesicular cells) described for Mikrocytos spp. [5, 50] were not always observed in ultrastructure studies of M. donaxi n. sp.: in some samples, it was possible to distinguish some parasite cell types as the endosomal cells presenting a well-developed anastomosing endoplasmic reticulum (Fig. 8c).The non-observation of these different stages could be due to the darc aspect of the cytoplasm limiting ultrastructural observations of M. donaxi n. sp.
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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) | 0.001 | 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 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.008 | 0.002 |
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".