HORMONAL-CONTROL OF THE GONADAL REGRESSION AND RECOVERY OBSERVED IN SHORT DAYS IN MALE AND FEMALE DOVES
HORMONAL-CONTROL OF THE GONADAL REGRESSION AND RECOVERY OBSERVED IN SHORT DAYS IN MALE AND FEMALE DOVES
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DOI：
10.1677/joe.0.0890079
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发表时间：
1981-01-01
影响因子：
4
通讯作者：
CHENG, MF
中科院分区：
文献类型：
--
作者：
BALTHAZART, J;BALTHAZARTRAZE, C;CHENG, MF
将性成熟的环斑鸠（Streptopelia risoria）从孵化后保持在14小时光照：10小时黑暗（14L：10D）的光周期下并隔离保存，然后转移到8L：16D。这种治疗导致卵巢和睾丸部分退化，血浆 LH（黄体生成素）浓度下降，但血浆促卵泡激素浓度没有下降。 2-3个月后。暴露于 8L:16D 后，性腺重新生长到原来的大小：这种重新生长伴随着血浆 LH 浓度的平行增加。暴露于 8L:16D 5 周（当性腺部分退化时）后，两性垂体对 LH 释放激素的反应与暴露于该光照方案 15 周（当性腺重新生长时）后观察到的反应相似。暴露于 8L:16D 的环斑鸠性腺大小的自发恢复是由下丘脑控制的，不涉及垂体或性腺功能的变化。
Sexually mature ring doves (Streptopelia risoria) maintained from hatch on a photoperiod of 14 h light:10 h darkness (14L:10D) and kept in isolation were transferred to 8L:16D. This treatment resulted in a partial regression of the ovaries and testes and a fall in the concentration of plasma LH [luteinizing hormone] but not of plasma follicle stimulating hormone. After 2-3 mo. exposure to 8L:16D, the gonads regrew to their original size: this regrowth was accompanied by a parallel increase in the concentration of plasma LH. The responsiveness of the pituitary gland to LH releasing hormone in both sexes after 5 wk of exposure to 8L:16D (when the gonads were partially regressed) was similar to the response observed after 15 wk exposure to this lighting schedule (when the gonads had regrown). The spontaneous recovery of gonadal size in ring doves exposed to 8L:16D is controlled by the hypothalamus and does not involve changes in the functional capacity of the pituitary gland or of the gonads.