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首页> 外文期刊>Physiological Entomology >Oosorption in the stink bug Plautia stali: role of Juvenile hormone in the induction of oosorption
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Oosorption in the stink bug Plautia stali: role of Juvenile hormone in the induction of oosorption

机译：臭虫Platutia stali中的渗透作用：幼年激素在诱导渗透中的作用

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摘要

To clarify the role of juvenile hormone (JH) in the induction of oosorption in females of the stink bug Plautia stali Scott (Heteroptera: Pentatomidae), the effects of extirpation and implantation of the corpus cardiac-corpus allatum complex (CC-CA) are examined in fed and starved adults, respectively. Removal of CC-CA induces oosorption in fed females, whereas CC-CA implantation stimulates ovary development in starved females. Transection of the nervous connections between the brain and CC-CA also exerts a stimulatory effect on ovary development. Uptake of yolk protein by the oocytes, assessed in terms of incorporation of a fluorescence dye, occurs on the day after food deprivation but ceases within 1 day after allatectomy. When females are deprived of food, beginning on day 3 of adult life, and treated with JH III skipped bisepoxide (JHSB(3)) on the same day, their ovaries develop in a dose-dependent fashion. Approximately half of the starved females that received JHSB(3) application on day 5 undergo oosorption in the terminal oocytes. This indicates that the critical starvation period for oosorption induction is approximately 2 days, and the earlier half of this period may reflect the time required for the brain to detect poor nutritional condition. During the latter half, in response to food deprivation, the brain inhibits JH biosynthesis by the corpus allatum through nervous connections, resulting in a low JH titre, which in turn induces oosorption.
机译：为了阐明幼年激素（JH）在臭臭虫Plautia stali Scott（Heteroptera：Pentatomidae）的雌性中诱导卵吸收的作用，induction体和are体复合体（CC-CA）的根除和植入作用是分别在饱食和饥饿的成年人中进行了检查。 CC-CA的去除会引起被喂食的雌性动物的卵吸收，而CC-CA的植入会刺激饥饿的雌性的卵巢发育。大脑和CC-CA之间神经连接的横断也对卵巢发育产生刺激作用。卵母细胞摄取卵黄蛋白（根据荧光染料的掺入评估）发生在食物缺乏后的第二天，但在异体切除术后的1天内停止。当女性从成年生活的第3天开始被剥夺食物，并在同一天接受JH III跳过的双环氧化物（JHSB（3））治疗时，她们的卵巢呈剂量依赖性。在第5天接受JHSB（3）应用的挨饿的雌性动物中，大约有一半在末端卵母细胞中发生卵吸收。这表明诱导吸收的临界饥饿期约为2天，该时期的前半段可能反映了大脑检测营养不良状况所需的时间。在后半段，由于缺乏食物，大脑会通过神经连接抑制异体的JH生物合成，导致JH滴度低，进而引起渗出。

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