Chilling causes secretion of hormone {prothoracicotropic hormone} that induces prothoracic glands to secrete ecdysone.
Chilling secretes prothoracicotropic hormone, which induces glands {prothoracic gland} to secrete ecdysone.
Prothoracic gland secretes growth and differentiation hormone {ecdysone}, which produces molting fluid.
Metamorphosis hormones {juvenile hormone} can prevent pupa formation and allow molting.
4-Zoology-Kinds-Arthropod-Insect-Metamorphosis
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Date Modified: 2022.0225