Artificial promotion of fish growth and reproduction via brain function in response to a photic environment

我们发现，与环境光照下的鱼类生长相比，发光二极管（LED）特定波长的光照射刺激了棘牙鲆（Verasper moseri）的体生长。在实验期间，即使在低水温条件下，由于摄取量减少导致体重下降，LED光，特别是绿色LED光也有显著的促生长作用。我们的研究结果表明，特定波长的光照射可能有助于促进水产养殖中鱼类的生长。在与生长和摄食行为相关的激素基因表达中观察到意想不到的波动。因此，需要进一步的实验来了解LED光和鱼类生长之间的神经内分泌机制。

We found that, compared to the growth of fish under ambient lighting, the somatic growth of the barfin flounder (Verasper moseri) was stimulated by irradiation with a specific wavelength of light from a light-emitting diode (LED). The significant effects of LED light, especially green LED light, on growth promotion were observed even under low water temperature when body weight decreased because of reduced food intake during the experimental period. Our results suggest that irradiation with a specific wavelength of light could be useful in improving fish growth in aquaculture. Unexpected fluctuations were observed in the expression of hormonal genes associated with growth and feeding behavior. Thus, further experiments are necessary to understand the neuroendocrine mechanisms linking LED light and fish growth.