与雌性太平洋 (Hippoglossus stenolepis) 卵巢发育相关的内分泌模式
Crystal Simchick1, Kennedy Bolstad1, Anna Simeon1
1International Pacific Halibut Commission, 2320 W. Commodore Way, Seattle, WA 98199, USA.
General and comparative endocrinology
|December 15, 2023
概括
太平洋鱼的性成熟是由垂体激素驱动的. 卵泡刺激激素 (Fsh) 和黄素化激素 (Lh) 调节了这种关键鱼类物种的生育,卵细胞成熟和排卵.
科学领域:
- 内分泌学 在内分泌学.
- 鱼类生物学 鱼类生物学
- 生殖生理学 生殖生理学
背景情况:
- 太平洋 (Hippoglossus stenolepis) 是北太平洋的一个重要的商业物种.
- 了解其生殖内分泌学对于渔业管理至关重要.
- 这项研究是首次调查该物种性成熟的内分泌机制.
研究的目的:
- 描述控制雌性太平洋鱼性成熟的内分泌机制.
- 分析关键生殖激素和受体的基因表达.
- 为了将激素水平与不同的发育阶段相关联.
主要方法:
- 从野生捕获的雌性太平洋鱼中采集了下垂体,卵巢和血液样本.
- 进行了发育阶段的组织学分类.
- 进行了淋巴激素子单元 (fshb, lhb) 和受体 (fshr, lhr) 的基因表达分析 (mRNA).
- 测量了的血水平,17β-雌激醇 (E2) 和维特洛原因.
主要成果:
- pituitary fshb mRNA 在生过程中增加,而 lhb mRNA 在卵细胞成熟过程中达到峰值.
- 卵巢fshr和lhrmRNA表达与垂体激素水平和产卵阶段相关.
- 类固醇酶基因表达 (cyp19a1,hsd20b2) 镜像受体基因模式.
- 血激素水平 (,E2) 和维特洛根因随着成熟的进展而增加.
结论:
- 下垂体淋巴激素,毛囊刺激激素 (Fsh) 和化激素 (Lh),可能控制太平洋鱼的繁殖.
- 似乎Fsh调节了小细胞生成,而Lh则调节了卵细胞的成熟和排卵.
- 这些发现为太平洋鱼的繁殖生理学提供了关键的见解.
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