ArticleJournal of fish biology2026
Continuous darkness is associated with improved growth performance during a high-temperature period and sex-specific modulation of early gonadal development in juvenile yellowtail (Seriola quinqueradiata).
Article in Journal of fish biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
Abstract
Selective breeding of yellowtail (Seriola quinqueradiata) is expanding in Japan, increasing the demand for practical reproductive control tools in commercial aquaculture to reduce genetic risks from escapees. Slowing early gonadal development through environmental manipulation may support future sterilization strategies, particularly when combined with other techniques. This study aimed to examine somatic growth and early gonadal development in juvenile yellowtail reared under continuous darkness (0L:24D). Juveniles were reared under 0L:24D or a 12L:12D photoperiod (control) and sampled at Weeks 0, 2, 4, 6, 8 and 10. Growth was recorded at each time point, and gonads were examined by histology and immunohistochemistry to assess gonadal sex differentiation, germ-cell proliferation and onset of meiosis. Water temperature increased similarly in both groups and exceeded 28°C from Week 6 onward. Despite identical feeding rations, fish reared under 0L:24D were significantly larger at Weeks 8 and 10 than controls. Gonadal sex differentiation progressed normally in both groups, and germ-cell proliferative activity did not differ between groups. SYCP3-positive germ cells were not detected at Week 6 under 0L:24D, whereas the proportion of SYCP3-positive germ cells at Weeks 8 to 10 was comparable to that in controls, suggesting a possible transient difference in the initial appearance of SYCP3-positive germ cells. In females, fish reared under 0L:24D showed lower area fraction and diameter of chromatin nucleolus- and perinucleolus-stage (CN/PN) oocytes at Weeks 8 and 10, suggesting reduced development of CN/PN-stage oocytes. These results suggest that, under the present single-tank experimental conditions, rearing under continuous darkness was associated with improved growth performance during the high-temperature period and sex-specific changes in early gonadal development in juvenile yellowtail.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.