...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Zoological Science >Gonadotropin-releasing hormone analog and sex steroids shorten homingduration of sockeye salmon in Lake Shikotsu
【24h】

Gonadotropin-releasing hormone analog and sex steroids shorten homingduration of sockeye salmon in Lake Shikotsu

机译：促性腺激素释放激素类似物和性类固醇缩短支Shi湖中红鲑鲑的归巢时间

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Gonadotropin-releasing hormone analog (GnRHa), testosterone (T) or 17 alpha, 20 beta-dihydroxy-4pregnen-3-one (DHP) was implanted in lacustrine sockeye salmon (Oncorhynchus nerka) to examine their effects on homing behavior prior to spawning. Maturing adult fish in Lake Shikotsu were captured by a set net adjacent to their natal hatchery in September and October, 1997. They were tagged, implanted with hormones and released at the center of lake. More than 70% of released fish returned to the hatchery. In September, GnRHa-implanted fish returned significantly earlier than the controls regardless of sexes. DHP also shortened homing duration in the females but not in the males. T tended to reduce homing duration in the males, however it did not have any significant effect in the females. In October, fish in all groups quickly returned within a few days after the release. Hence, the shortening effect of GnRHa on homing duration was not seen. The October fish may be already well primed by endogenous hormones. The present study showed that, in September, GnRHa consistently shortened homing duration, whereas sex steroid actions varied depending on sex in lacustrine sockeye salmon.
机译：将促性腺激素释放激素类似物（GnRHa），睾丸激素（T）或17α，20β-二羟基-4孕烯-3-酮（DHP）植入湖马红鲑（Oncorhynchus nerka）中，以检查它们对产卵前归巢行为的影响。 1997年9月和10月，支ko湖成熟的成年鱼被与其孵化场相邻的固定网捕获。它们被贴上标签，植入荷尔蒙并在湖中心释放。超过70％的释放鱼类返回孵化场。 9月，不论性别，植入GnRHa的鱼比对照早得多的返回。 DHP还缩短了雌性的归巢持续时间，但没有缩短雄性。 T倾向于减少雄性的归巢持续时间，但是对雌性却没有任何显着影响。 10月，所有鱼类在放飞后的几天内迅速返回。因此，未观察到GnRHa对归巢持续时间的缩短作用。十月份的鱼可能已经被内源激素很好地引发。本研究表明，9月，GnRHa持续缩短了归巢持续时间，而性类固醇的作用因性别而异，在湖边红大马哈鱼中有所不同。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号