Which mechanism directly inhibits further larval molting in holometabolous insects during pupation triggering competence?

💡 Explanation

When a larva is ready to pupate, juvenile hormone esterase breaks down juvenile hormone, because juvenile hormone maintains larval characteristics, eliminating it allows pupation to proceed. Therefore, decreased JH action triggers pupation rather than ETH release, PTTH inactivation (which would prevent molting altogether) or 20E elevation (which triggers molting).

• Which risk increases when foraging bees misinterpret floral scent maps?
• Which outcome results when certain cephalopod species cultivate a bacterial microbiome exceeding a quorum sensing threshold?
• Which consequence prevents adult structures during larval development?
• Which consequence occurs when internal food reserves constrain a forager bee?
• Which outcome occurs when a raptor experiences localized feather structural failure during a dive?
• Which navigational challenge emerges when migratory birds encounter deforestation?