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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Anopheles Gambiae Males Produce And Transfer The Vitellogenic Steroid Hormone 20-hydroxyecdysone To Females During Mating
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Anopheles Gambiae Males Produce And Transfer The Vitellogenic Steroid Hormone 20-hydroxyecdysone To Females During Mating

机译：冈比亚按蚊的男性在交配过程中会产生卵黄蛋白类固醇激素20-羟基蜕皮激素并将其转移给女性

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摘要

In female insects, the steroid hormone 20-hydroxyecdysone (20E) plays a major role in activating vitellogenesis, a process required for egg development. By contrast with vertebrates, production of large amounts of hormonal steroids has not been reported in adult male insects. In the present study, we analyzed steroidogenesis in both male and female adult of the malaria mosquito Anopheles gambiae and we found that A. gambiae male mosquitoes produce high amounts of the steroid hormone 20E. Importantly, we found that male accessory glands, but not testes, are the source of 20E. Moreover, this steroid hormone is stored in male accessory glands and delivered to females during mating. These findings suggest that male 20E may not act as a true male sex steroid, but more likely as an allohormone. Our results give new insights into species-specific physiological processes that govern the reproductive success of the malaria mosquito. This could thus lead to the identification of new target genes for manipulating male and/or female reproductive success, a promising way to reduce or eliminate mosquito population and therefore to control malaria transmission.
机译：在雌性昆虫中，类固醇激素20-羟基蜕皮激素（20E）在激活卵黄发生过程中起主要作用，卵黄发生是卵发育所需的过程。与脊椎动物相反，成年雄性昆虫中尚未报道大量激素类固醇的产生。在本研究中，我们分析了疟疾冈比亚按蚊的成年雄性和雌性中的类固醇生成，并且我们发现冈比亚按蚊雄性蚊产生了大量的类固醇激素20E。重要的是，我们发现雄性附属腺而不是睾丸是20E的来源。此外，这种类固醇激素储存在雄性副腺中，并在交配过程中传递给雌性。这些发现表明，男性20E可能不是真正的男性性固醇，但更有可能是同种激素。我们的结果为控制疟疾蚊子繁殖成功的特定物种的生理过程提供了新见解。因此，这可能导致鉴定新的靶基因以控制男性和/或女性的生殖成功，这是减少或消除蚊子种群并因此控制疟疾传播的一种有前途的方式。

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