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首页> 外文期刊>Zoological Science >Reproductive Soldier-like Individuals Induced by Juvenile Hormone Analog Treatment in Zootermopsis nevadensis (Isoptera, Archotermopsidae)
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Reproductive Soldier-like Individuals Induced by Juvenile Hormone Analog Treatment in Zootermopsis nevadensis (Isoptera, Archotermopsidae)

机译：幼体激素类似物治疗引起的内生动物白僵菌（等翅目，始祖科）的生殖士兵样个体

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摘要

Eusocial insects have highly sophisticated societies, showing a conspicuous division of labor associated with different phenotypes. These castes show specific morphologies adapted to discrete tasks. Termite castes are divided into reproductives, workers, and soldiers. Individuals with soldier-like heads as well as developed gonads have been recorded in several primitive families, and are called reproductive soldiers. In some termite species, however, a trade-off-like developmental relationship has been shown between soldier and imaginal characteristics. Thus, while the mechanism that regulates the development of both characteristics in the same individual is interesting, the details are still unclear. We focused on juvenile hormone (JH), which is involved not only in termite caste differentiation, but also in the gonad development of many insects, and we aimed to clarify the effects of JH on the differentiation of reproductive soldiers in Zootermopsis nevadensis. We succeeded in the induction of individuals with reproductive soldier-like gross morphologies by JH analog (JHA) application to several developmental stages. We also observed that gonad development was significantly promoted by JHA application after molts in the induced reproductive soldier-like individuals, but not in natural soldiers. Finally, we confirmed that the gene expression level of vitellogenin was extremely high in the induced reproductive soldier-like individuals following JHA treatment after the molt. These results suggested that soldiers do not have regulatory mechanisms for gonad development involving JH, and the regulation of reproductive soldiers development is different from that of soldiers. Reproductive soldiers may have evolved independently from the soldier caste rather than from an intermediate stage of soldier evolution
机译：真社会昆虫具有高度复杂的社会，表现出与不同表型有关的分工。这些种姓显示出适合离散任务的特定形态。白蚁等级分为生殖，工人和士兵。在几个原始家庭中都记录了具有士兵般头部和性腺发达的个体，这些人被称为生殖士兵。但是，在某些白蚁物种中，士兵与想象特征之间表现出了类似折衷的发展关系。因此，尽管调节同一个人两个特征的发展的机制很有趣，但细节仍不清楚。我们着重研究少年激素（JH），该激素不仅与白蚁种系分化有关，而且还与许多昆虫的性腺发育有关，我们的目的是阐明JH对nevadensis繁殖动物分化的影响。我们通过将JH类似物（JHA）应用到几个发育阶段，成功地诱导了具有生殖兵样总体形态的个体。我们还观察到，在诱生的类似士兵的个体中蜕皮后，JHA的应用显着促进了性腺的发育，但在自然士兵中却没有。最后，我们确认蜕皮后经JHA处理后，诱导的生殖士兵样个体中卵黄蛋白原的基因表达水平极高。这些结果表明，士兵没有涉及JH的性腺发育调控机制，而生殖士兵的发育调控与士兵不同。生殖士兵可能独立于士兵种姓而进化，而不是士兵进化的中间阶段。

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