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在被养殖的假小丑鱼中,Cyp19表达和性别变化的时间

J Thamnawasolos¹, C Boonphakdee¹

¹Burapha University, Faculty of Science, Department of Biology, Chonburi, Thailand.

Brazilian journal of biology = Revista brasleira de biologia

|August 16, 2023

概括

假小丑海鱼经历了由社会线索引发的性别变化. 关键基因cyp19a1a和cyp19a1b在配对过程中表现出改变的表达,女性的完全转换至少需要5个月.

科学领域:

海洋生物学海洋生物学
遗传学遗传学是一个
生殖生物学生殖生物学

背景情况:

假小丑海鱼 (Amphiprion ocellaris) 呈现出长足的雌雄性,这是一个独特的繁殖策略.
了解影响性变化的遗传和环境因素对这种物种至关重要.

研究的目的:

为了研究在养的 Amphiprion ocellaris.中发生性变化的遗传机制和时间.
为了检查性变化过程中cyp19a1a和cyp19a1b基因的表达模式.

主要方法:

发生在不同时间段 (0-16个月) 的鱼类上进行了淋巴腺组织学分析.
在配对和不配对的鱼中量化了cyp19a1a和cyp19a1b的基因表达水平.
进行了性别和对照组之间的比较分析.

主要成果:

经过3个月的配对后,观察到cyp19基因表达的显著改变.
无论是cyp19a1a还是cyp19a1b,与男性和对照人群相比,新形成的雌性中都显示出高表达.
组织学数据证实,女性的性别转换发生在3个月的配对期内.

结论:

基因cyp19a1a和cyp19a1b在Amphiprion ocellaris的性别变化中发挥着至关重要的作用.
在这种物种中,至少需要5个月的配对时间才能完成性别变化.
社会相互作用和相关的基因表达变化推动了鱼的生殖可塑性.

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