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Juvenile hormone signaling in insect oogenesis
Carolina Gonçalves Santos1, Fernanda Carvalho Humann2, Klaus Hartfelder1
1Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
Current Opinion in Insect Science
|May 22, 2019
Summary
Juvenile hormone (JH) regulates insect reproduction by interacting with other signaling pathways. Recent studies reveal its complex roles in development and social behavior across diverse insect species.
Area of Science:
- Insect reproductive physiology
- Endocrinology
- Developmental biology
Background:
- Juvenile hormone (JH) is vital for insect reproduction, with its molecular mechanisms recently elucidated.
- JH signaling interacts with ecdysone and nutrient sensing pathways.
Purpose of the Study:
- To review recent findings on the molecular crosstalk of JH signaling.
- To integrate JH's role in development and reproduction.
- To explore JH function in non-model insects regarding social behavior.
Main Methods:
- Literature review of recent findings.
- Comparative analysis across model and non-model insect species.
- Focus on Drosophila melanogaster, Aedes aegypti, Tribolium castaneum, and Locusta migratoria.
Main Results:
- JH signaling intricately crosstalks with ecdysone and nutrient sensing pathways.
- Ecdysis triggering hormone (ETH) is critical for both molting and oogenesis.
- In social insects, JH function is decoupled from reproduction, influencing division of labor.
Conclusions:
- An integrated view of insect development and reproduction is essential.
- Life cycle and life history strategies are crucial for understanding insect reproductive physiology.
- JH's diverse roles extend beyond reproduction, impacting social structures.
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