PRECOCIOUS TERMINATION OF DIAPAUSE IN NECK- AND ABDOMEN-LIGATED PUPAL PREPARATIONS OF THE TOBACCO HORNWORM, MANDUCA SEXTA
PRECOCIOUS TERMINATION OF DIAPAUSE IN NECK- AND ABDOMEN-LIGATED PUPAL PREPARATIONS OF THE TOBACCO HORNWORM, MANDUCA SEXTA
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烟草天蛾（Manduca Sexta）颈部和腹部结扎蛹制剂中滞育的提前终止
DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
Carroll M. Williams
中科院分区：
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作者：
L. Safranek;C. R. Squire;Carroll M. Williams
当结扎之间的头部和胸部的新鲜蛹角虫，由此产生的无脑制剂开始成人发展周前比完整的滞育控制和几个月前比类似的制剂，大脑已被手术摘除。这种现象不能通过切除任何一个公认的头部神经或内分泌器官或器官的任何组合来重现。在许多用胸腹间结扎或手术切除的离体蛹中也发生了类似的加速发育现象，摘除滞育或非滞育蛹的前胸腺，只使成虫发育的开始时间稍有延迟。然而，这种发育仍然高度依赖于大脑，因为缺乏大脑和前胸腺的制剂经历了长时间的发育停滞。缺乏前胸腺的制剂表现出蜕皮激素的水平升高，在成人发育的开始。
When ligatures were placed between the head and thorax of freshly pupated hornworms, the resulting brainless preparations initiated adult development weeks earlier than intact diapausing controls and months earlier than similar preparations from which the brain had been surgically extirpated. This phenomenon could not be reproduced by removal of any single recognized cephalic neural or endocrine organ or any combination of organs. A similar accelerated development took place in many isolated pupal abdomens prepared by ligature or surgical section between the thorax and abdomen.Extirpation of the prothoracic glands of either diapause or non-diapause pupae resulted in only a very slight delay in the onset of adult development. Nevertheless, this development remained highly dependent on the brain, since preparations lacking brains as well as prothoracic glands underwent a prolonged developmental arrest. Preparations lacking prothoracic glands demonstrated elevated levels of ecdysone at the outset of adult de...