Ambient temperature modulates reproductive processes, especially in poikilotherms such as teleosts. Consequently, global warming is expected to impact the reproductive function of fish, which has implications for wild population dynamics, fisheries, and aquaculture. In this extensive review spanning tropical and cold-water environments, we examine the impact of higher-than-optimal temperatures on teleost reproductive development and physiology across reproductive stages, species, generations, and sexes. In doing so, we demonstrate that warmer-than-optimal temperatures can affect every stage of reproductive development from puberty through to the act of spawning, and these responses are mediated by age at spawning and are associated with changes in physiology at multiple levels of the brain-pituitary-gonad axis. Response to temperature is often species-specific, and changes with environmental history/transgenerational conditioning, and the amplitude, timing, and duration of thermal exposure within a generation. Thermally-driven changes to physiology, gamete development and maturation typically culminate in poor sperm and oocyte quality, and/or advancement/delay/inhibition of ovulation/spermiation and spawning. Although the field of teleost reproduction and temperature is advanced in many respects, we identify areas where research is lacking, especially for males and egg quality from "omics" perspectives. Climate-driven warming will continue to disturb teleost reproductive performance and therefore guide future research, especially in the emerging areas of transgenerational acclimation and epigenetic studies, which will help to understand and project climate change impacts on wild populations and could also have implications for aquaculture. This article is protected by copyright. All rights reserved.

中文翻译：

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从配子发生到产卵：气候驱动的变暖如何影响硬骨鱼生殖生物学

环境温度调节生殖过程，特别是在变温动物如硬骨鱼中。因此，预计全球变暖会影响鱼类的生殖功能，这对野生种群动态、渔业和水产养殖业产生影响。在这篇涵盖热带和冷水环境的广泛评论中，我们研究了高于最佳温度对硬骨鱼生殖发育和生理机能的影响，跨越生殖阶段、物种、世代和性别。在这样做时，我们证明了高于最佳温度会影响从青春期到产卵行为的生殖发育的每个阶段，这些反应由产卵时的年龄介导，并与多个水平的生理变化有关。脑-垂体-性腺轴。对温度的反应通常是物种特异性的，并且会随着环境历史/跨代条件以及一代内热暴露的幅度、时间和持续时间而变化。生理、配子发育和成熟的热驱动变化通常最终导致精子和卵母细胞质量差，和/或排卵/精子生成和产卵的推进/延迟/抑制。尽管硬骨鱼繁殖和温度领域在许多方面都取得了进步，但我们确定了缺乏研究的领域，尤其是从“组学”角度对雄性和卵质量的研究。气候驱动的变暖将继续干扰硬骨鱼的繁殖性能，因此指导未来的研究，特别是在跨代驯化和表观遗传研究的新兴领域，这将有助于了解和预测气候变化对野生种群的影响，也可能对水产养殖产生影响。本文受版权保护。版权所有。