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← Nature & AnimalsWhich outcome delays adult eclosion when a lepidopteran pupa experiences increased octopamine levels towards metamorphosis?
A)Premature cuticle tanning progression
B)Inhibition of digestive enzyme expression
C)Increased immune cell proliferation
D)Ecdysone receptor activation suppression✓
💡 Explanation
Ecdysone receptor activation relies on hormonal signaling. Increased octopamine interferes with this cascade through receptor interference, therefore eclosion is delayed rather than occurring prematurely because gene expression for metamorphosis is repressed.
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