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Effects of LEDs of different spectra on immunity-related responses in olive flounder Paralichthys olivaceus during short starvation
- Lee, Tae Ho, Song, Jin Ah, Choi, Cheol Young
- Fisheries science 2019 v.85 no.2 pp. 317-325
- Paralichthys olivaceus, flounder, immunoglobulin M, innate immunity, irradiation, light emitting diodes, lysozyme, melatonin, starvation
- In this study, we investigated the regulation of innate immune responses in olive flounder Paralichthys olivaceus under irradiation with various light-emitting diodes (LEDs), blue (460 nm), green (520 nm), and red (630 nm), at two intensities (0.3 and 0.6 W/m²) for 9 days. To evaluate the effects, we analyzed the levels of melatonin receptor 1 (MTR-1), melatonin, IgM, and lysozyme, which are related to the immunity index. The results showed that melatonin, IgM, and lysozyme significantly decreased during starvation compared to their levels in a normally fed control group. However, the decreases were less pronounced in the green and blue LED-exposed groups than those in the red LED-exposed group during the experimental period. These results confirmed that short-wavelength light (green and blue) is effective in maintaining enhanced immunity in olive flounder.