Physical interactions facilitate sex change in the protogynous orange-spotted grouper, Epinephelus coioides.
Physical interactions facilitate sex change in the protogynous orange-spotted grouper, Epinephelus coioides.
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身体互动促进了雌性橙斑石斑鱼（Epinephelus coioides）的性别变化。
DOI：
10.1111/jfb.14663
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发表时间：
2020-12
影响因子：
2
通讯作者：
Zhang Y.
中科院分区：
文献类型：
--
作者：
Chen J.;Peng C.;Huang J.;Shi H.;Xiao L.;Tang L.;Lin H.;Li S.;Zhang Y.
硬骨鱼的性别变化通常受社会因素的影响。在表现出雌雄同体的性别变化的物种中，如橙点石斑鱼，当占主导地位的雄性被从社会群体中移除时，最具优势的雌性启动性别变化。本研究的目的是确定斜带石斑鱼社会控制性改变的调控机制。我们调查了斜带石斑鱼繁殖周期中社会行为和性别变化的季节变化，并在建立优势等级的过程中确定了这种鱼的行为模式。这种鱼的社会行为和性别变化受季节的影响，只发生在繁殖前和繁殖季节。因此，在繁殖季节进行了一系列感觉隔离实验，以确定物理、视觉和嗅觉线索在调节社会控制的性别变化中的作用。结果表明，社会群体中个体之间的身体互动对于性别变化的启动和完成是至关重要的，而仅凭视觉和嗅觉线索不足以刺激优势女性的性别变化。此外，我们认为类固醇激素11-酮-睾酮和皮质醇参与调节社会控制性改变的启动。这篇文章受版权保护。版权所有。
Sex change in teleost fishes is commonly regulated by social factors. In species that exhibit protogynous sex change, such as the orange-spotted grouper Epinephelus coioides, when the dominant males are removed from the social group, the most dominant female initiates sex change. The aim of this study was to determine the regulatory mechanisms of socially controlled sex change in Epinephelus coioides. We investigated the seasonal variation in social behaviours and sex change throughout the reproductive cycle of Epinephelus coioides, and defined the behaviour pattern of this fish during the establishment of a dominance hierarchy. The social behaviours and sex change in this fish were affected by season, and only occurred during the pre-breeding season and breeding season. Therefore, a series of sensory isolation experiments was conducted during the breeding season to determine the role of physical, visual, and olfactory cues in mediating socially controlled sex change. The results demonstrated that physical interactions between individuals in the social groups were crucial for the initiation and completion of sex change, whereas visual and olfactory cues alone were insufficient in stimulating sex change in dominant females. In addition, we propose that the steroid hormones 11-ketotestosterone and cortisol are involved in regulating the initiation of socially controlled sex change. This article is protected by copyright. All rights reserved.