1. Metamorphosis of an insect may be ametabolous, paurometabolous, hemimetabolous, or holometabolous. Neuroendocrine and endocrine secretions control metamorphosis. 昆虫的变态可以是无变态型、渐变态型，不完全变态型和完全变态型。神经分泌和内分泌控制变态行为。
2. Metamorphosis of an insect may be ametabolous, paurometabolous, hemimetabolous, or holometabolous. Neuroendocrine and endocrine secretions control metamorphosis. 昆虫的变态可以是无变态型、渐变态型，不完全变态型和完全变态型。神经分泌和内分泌控制变态行为。
3. Metamorphosis of an insect may be ametabolous, paurometabolous, hemimetabolous, or holometabolous. Neuroendocrine and endocrine secretions control metamorphosis. 昆虫的变态可以是无变态型、渐变态型，不完全变态型和完全变态型。神经分泌和内分泌控制变态行为。
