Fulvivirga aurantia sp. nov. and Xanthovirga aplysinae gen. nov., sp. nov., marine bacteria isolated from the sponge Aplysina fistularis, and emended description of the genus Fulvivirga
Bibliographic record
Abstract
Two Gram-stain-negative, strictly aerobic, marine bacteria, designated as strains RKSG066 T and RKSG123 T , were isolated from a sponge Aplysina fistularis collected at a depth of 15 m off the west coast of San Salvador, The Bahamas. Investigation of nearly full-length 16S rRNA gene and whole genome-based phylogenies revealed that both strains belong to the order Cytophagales within the class Cytophagia and phylum Bacteroidetes . Strain RKSG066 T formed a monophyletic clade with described members of the genus Fulvivirga , while strain RKSG123 T formed a well-supported paraphyletic branch apart from this and other related genera within the family Flammeovirgaceae . For both RKSG066 T and RKSG123 T , optimal growth parameters were 30–37 °C, pH 7–8 and 2–3 % (w/v) NaCl; cells were catalase- and oxidase-positive, and flexirubin-type pigments were absent. The predominant fatty acids were iso-C 15 : 0 , C 16 : 0 , C 18 : 0 , iso-C 17 : 0 3-OH, C 16 : 1 ω5 c , iso-C 15 : 0 3-OH, C 18 : 1 ω9 c and iso-C 15 : 1 G for RKSG066 T , and iso-C 17 : 0 3-OH, C 16 : 1 ω5 c , iso-C 15 : 0 , C 16 : 0 3-OH and summed feature 4 (iso-C 17 : 1 I and/or anteiso-C 17 : 1 B) for RKSG123 T . Menaquinone-7 was the major respiratory quinone for both strains. The DNA G+C contents of RKSG066 T and RKSG123 T were 39.5 and 36.7 mol%, respectively. On the basis of phylogenetic distinctiveness and polyphasic analysis, the type strain RKSG066 T (=TSD-73 T =LMG 29870 T ) is proposed to represent a novel species of the genus Fulvivirga , for which the name Fulvivirga aurantia sp. nov. is proposed. The type strain RKSG123 T (=TSD-75 T =LMG 30075 T ) is proposed to represent the type species of a novel genus and species with the proposed name Xanthovirga aplysinae gen. nov., sp. nov. Additionally, the genus Fulvivirga is emended to include strains of orange-pigmented colonies that contain the predominant cellular fatty acids C 16 : 0 , C 18 : 0 , C 16 : 1 ω 5 c and C 18 : 1 ω 9 c .
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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 | 0.000 |
| 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".