ArticleFrontiers in physiology2026
Photoperiod effects on growth, lipid metabolism, and lipidomics analysis of tilapia.
Article in Frontiers in physiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: To investigate the effects and underlying mechanisms of photoperiod on the growth and lipid metabolism of tilapia ( Methods: Four photoperiod treatment groups were established: 10L:14D, 12L:12D, 14L:10D, and 16L:8D. Various analytical methods were employed, including tissue sectioning, blood lipid analysis, gene expression profiling, fatty acid profiling, and lipidomics, to assess the impact of photoperiod on lipid metabolism in tilapia. Results: In both females and males, the highest relative body weight growth rates were observed in the 16L:8D group, reaching 122.1% and 133.6%, respectively. As the photoperiod increased, the visibility of lipid droplets in the liver decreased. The expression levels of lipid synthesis‑related genes ( Conclusion: These findings suggest that a long photoperiod (16L:8D) effectively increases the growth rate of tilapia and reduces blood lipid concentrations and hepatic fat deposition, thereby promoting healthy growth. This study provides a theoretical foundation for healthy aquaculture practices in fish.
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