Prothoracic gland involution related to moulting hormone levels during the metamorphosis of Tenebrio molitor L. |
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| Authors: | I Glitho JP Delbecque J Delachambre |
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| Institution: | Equipe de Recherche Associée au C.N.R.S. No. 231, Faculté des Sciences, Laboratoire de Zoologie, Boulevard Gabriel, 21100 Dijon, France |
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| Abstract: | Prothoracic gland (PG) of Tenebrio shows ultrastructural changes which can be correlated with ecdysteroid levels (measured by radioimmunoassay) during larval-pupal development. However, the gland cells begin to degenerate before pupal-adult ecdysis: the PG involution is completed before the moulting hormone peak which triggers pupal-adult development. These facts strongly suggest that another endocrine organ produces moulting hormone needed for adult development. |
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| Keywords: | Moulting prothoracic gland ecdysteroids |
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