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Corpus allatum
The corpus allatum (plural: corpora allata), in insect physiology, is an endocrine gland which generates juvenile hormone; as such, it plays a crucial role in metamorphosis. Surgical removal of the corpora allata (an allatectomy) can cause an immature larva to pupate at its next molt, resulting in a miniature adult.〔(''Vitamins and Hormones: v. 14: Advances in Research and Applications'' ), edited by Richard Harris, 1956, from Elsevier〕 Similarly, transplantation of corpora allata from a young larva to a fully mature larva can greatly extend the larval stage, resulting in an equivalent to gigantism.〔(Insect Hormones ) at John W. Kimball's Biology-Pages.info〕
In many Diptera species, the corpus allatum is fused with the corpus cardiacum, forming a "ring gland", also known as Weismann's ring.〔(THE HOMOLOGIES OF THE RING GLAND OF DIPTERA BRACHYCERA ), ''Annals of the Entomological Society of America'', Volume 36, Number 1, March 1943 , pp. 1-10, by M.F. Day〕
In Lepidoptera species, the corpus allatum acts as a release site for prothoracicotropic hormone which is generated by the brain.〔(''Insect Hormones'' ), page 13, by H. Fredrik Nijhout, 1994, Princeton University Press〕
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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