Nagaishi H, Oshima N
Department of Biology, Faculty of Science, Toho University, Chiba, Japan.
Pigment Cell Res. 1989 Nov-Dec;2(6):485-92. doi: 10.1111/j.1600-0749.1989.tb00243.x.
Experiments with skin pieces revealed that the sympathetic nervous system controls the activity of the light-sensitive iridophores in the stripes of the neon tetra. The spectral peak reflected from the cells was shifted toward longer wavelengths as a result of a direct interaction between norepinephrine and alpha-adrenoceptors present on the cell membrane. Adenosine accelerated the recovery from the effects of the amine. Such regulation seems to operate when fish are in an excited state or under stress. Since alpha-melanophore-stimulating hormone (alpha-MSH), melanin-concentrating hormone (MCH) and melatonin caused the responses only at high concentrations, it is possible that these peptides and amine do not affect the properties of the light-reflecting cells in vivo.
对鱼皮碎片的实验表明，交感神经系统控制着霓虹脂鲤条纹中对光敏感的虹彩细胞的活动。由于去甲肾上腺素与细胞膜上存在的α - 肾上腺素能受体之间的直接相互作用，细胞反射的光谱峰值向更长波长移动。腺苷加速了胺作用后的恢复。当鱼处于兴奋状态或受到压力时，这种调节似乎会起作用。由于α - 促黑素细胞激素（α - MSH）、黑色素浓缩激素（MCH）和褪黑素仅在高浓度时才引起反应，因此这些肽和胺在体内可能不会影响光反射细胞的特性。
