Garg S K, Sundararaj B I
Chronobiologia. 1986 Jan-Mar;13(1):1-11.
The findings reported here indicate that the pineal organ in catfish is involved in the regulation of locomotor activity rhythms and in some aspects of osmoregulation. Under LD 12:12 regimen, catfish is nocturnally active, with the maximum activity just before dawn. However, under conditions of continuous darkness (DD), the locomotor rhythm became free-running. Pinealectomy abolished the activity rhythm under DD and resulted in arrhythmicity. Circadian rhythms in plasma cortisol, osmolality and electrolytes (Na+ and K+) were also observed. Pinealectomy, though, increased the amplitudes of the rhythm; however the differences were not statistically significant. Removal of pineal significantly increased the mesor values of plasma osmolality and electrolytes, but there were no significant differences in the mesor values of plasma cortisol.
此处报告的研究结果表明，鲶鱼的松果体器官参与运动活动节律的调节以及渗透调节的某些方面。在12:12的明暗周期（LD）条件下，鲶鱼夜间活跃，在黎明前活动最为剧烈。然而，在持续黑暗（DD）条件下，运动节律变为自由运行。松果体切除消除了DD条件下的活动节律并导致无节律性。还观察到血浆皮质醇、渗透压和电解质（Na+和K+）的昼夜节律。不过，松果体切除增加了节律的振幅；然而，差异无统计学意义。切除松果体显著增加了血浆渗透压和电解质的中值，但血浆皮质醇的中值无显著差异。
