SHORT PHOTOPERIODS AFFECT MALE HAMSTER SOCIOSEXUAL BEHAVIORS IN THE PRESENCE AND ABSENCE OF TESTOSTERONE
SHORT PHOTOPERIODS AFFECT MALE HAMSTER SOCIOSEXUAL BEHAVIORS IN THE PRESENCE AND ABSENCE OF TESTOSTERONE
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DOI：
10.1016/0031-9384(90)90046-7
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发表时间：
1990-01-01
影响因子：
2.9
通讯作者：
POWERS, JB
中科院分区：
文献类型：
--
作者：
MIERNICKI, M;POSPICHAL, MW;POWERS, JB
雄性仓鼠暴露于长(LD 14：10)或短(LD 8：16)光周期(LP；SP)，以评估这些环境条件对社会性行为的影响。在实验1中，性腺完整的雄性SP在性行为方面表现出缺陷，这既反映在表现上，也反映在启动措施上。LP仓鼠和SP仓鼠在雄性对雌性仓鼠及其气味的化学调查的某些方面也有显著差异。在实验2中，去势导致交配障碍的发展，但在SP条件下，雄性发生得更快。随后的睾酮(T)替代在T后2周和4周的测试中恢复了坐位、插入和射精，但在LP组发生得更快。在第二次测试中，SP雄性仍然比LP雄性启动坐骑和插入的速度更慢。这些光周期的影响是在类固醇非依赖和类固醇依赖对行为的影响的背景下讨论的，并对化学感觉信息处理受损的作用进行了评估。
Male hamsters were exposed to long (LD 14:10) or short (LD 8:16) photoperiods (LP; SP) to evaluate the effects of these environmental conditions on sociosexual behaviors. In Experiment 1, gonadally intact males in SP exhibited deficits in sexual behavior, reflected both in performance as well as initiation measures. Some aspects of the males'' chemoinvestigation of females or their odors were also significantly different between LP and SP hamsters. In Experiment 2, castration resulted in the development of copulatory impairments, but they occurred more rapidly among males in SP conditions. Subsequent testosterone (T) replacement restored mounts, intromissions and ejaculations on tests given 2 and 4 weeks after T, but this happened more quickly in the LP group. SP males were still slower than LP males to initiate mounts and intromissions on their second test. These influences of photoperiod are discussed in the context of steroid-independent and steroid-dependent effects on behavior and the role of impaired processing of chemosensory information is evaluated.