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首页> 美国卫生研究院文献>Journal of Insect Science >Storage hexamer utilization in two lepidopterans: differences correlated with the timing of egg formation
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Storage hexamer utilization in two lepidopterans: differences correlated with the timing of egg formation

机译：在两个鳞翅目动物中利用六聚体的存储六聚体利用：差异与卵形成时间有关

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摘要

Most insects produce two or more storage hexamers whose constituents and developmental profiles are sufficiently different to suggest specialization in the ways that they support metamorphosis and reproduction. Hexamerin specializations are compared here in the Cecropia moth (Hyalophora cecropia), which produces eggs during the pupal-adult molt, and the Monarch butterfly (Danaus plexippus), which produces eggs under long-day conditions after adult eclosion. In both sexes of both species, reserves of arylphorin (ArH) were exhausted by the end of metamorphosis. In Cecropia, the same was true for the high-methionine hexamerins, V-MtH and M-MtH. But in short day Monarch females 20–30% of the pupal reserves of V-MtH and M-MtH survived metamorphosis, persisting until long-day conditions were imposed to stimulate egg formation. Differences in storage sites have been documented in other lepidopterans, with MtH reserves being found primarily in fat body protein granules and the ArH reserve being found primarily in the hemolymph. Similar differences could explain how a fraction of the MtH's, but not of ArH, escapes utilization during metamorphosis in a species with post-eclosion egg formation. No differences in utilization schedules were detected between V- and M-MtH, despite divergent compositions and antigenic reactivity.
机译：大多数昆虫会产生两种或多种储存六聚体，它们的成分和发育特征差异很大，以致于它们以支持变态和繁殖的方式暗示其特殊性。在这里，比较了六甲菊酯的专长：在cr蜕皮期产卵的Cecropia蛾（Hyalophora cecropia）和在成年羽化后长日条件下产卵的帝王蝶（Danaus plexippus）。在这两个物种的两个性别中，到变态结束时，芳基蛋白（ArH）的储备已耗尽。在Cecropia中，高蛋氨酸六聚体V-MtH和M-MtH的情况也是如此。但是在短短的一天中，君主雌性的V-MtH和M-MtH的20储量中有20％至30％幸免于变态，一直持续到施加长日条件以刺激卵的形成。在其他鳞翅目动物中已经发现了储存位点的差异，其中MtH储备主要存在于脂肪体蛋白颗粒中，而ArH储备主要存在于血淋巴中。类似的差异可以解释，在具有蛋脱离后卵形成的物种的变态过程中，一部分MtH（而不是ArH）如何逃避利用。尽管组成和抗原反应性存在差异，但在V-MtH和M-MtH之间未发现利用时间表的差异。

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