化学性交感神经切除术和松果体切除术对暴露于短光照周期的田鼠（田鼠）性腺的影响。

Effect of chemical sympathectomy and pinealectomy upon gonads of voles (Microtus agrestis) exposed to short photoperiod.

作者信息

Farrar G M, Clarke J R

出版信息

Neuroendocrinology. 1976;22(2):134-43. doi: 10.1159/000122620.

Abstract

Day length or photoperiod is an important determinant of seasonal breeding or sexual maturation in the vole (Microtus agrestis). Exposure of voles to short (6 h) photoperiods slows gonadal development or causes active gonads to regress. Abolishing pineal activity either by chemical sympathectomy, using 6-hydroxydopamine (6-OHDA), or by surgical pinealectomy, prevents this inhibiting or regressing effect of shor photo period upon gonads. Thus, the pineal gland appears to play a part in the measurement of day length by voles and in the physiological causation of their seasonal breeding.

摘要

日照时长或光周期是田鼠（草原田鼠）季节性繁殖或性成熟的一个重要决定因素。将田鼠暴露于短日照（6小时）条件下会减缓性腺发育，或导致活跃的性腺退化。通过化学交感神经切除术（使用6-羟基多巴胺，即6-OHDA）或手术切除松果体来消除松果体的活性，可防止短日照对性腺的这种抑制或退化作用。因此，松果体似乎在田鼠对日照时长的测量及其季节性繁殖的生理原因中发挥作用。