Juvenile Hormone III but Not 20-Hydroxyecdysone Regulates the Embryonic Diapause of Aedes albopictus
| Autor: | Peter Armbruster, Zachary A. Batz, Colin S. Brent, Jennifer Sugijanto, Molly R. Marias |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine hormonal regulation Physiology media_common.quotation_subject 20-Hydroxyecdysone Zoology Insect Biology Diapause embryonic diapause 01 natural sciences lcsh:Physiology 03 medical and health sciences chemistry.chemical_compound Physiology (medical) ecdysone media_common Larva lcsh:QP1-981 juvenile hormone Diptera fungi Brief Research Report Aedes albopictus Pupa 010602 entomology 030104 developmental biology chemistry Juvenile hormone Embryonic diapause Ecdysone |
| Zdroj: | Frontiers in Physiology, Vol 10 (2019) Frontiers in Physiology |
| DOI: | 10.3389/fphys.2019.01352/full |
| Popis: | Diapause is an alternative developmental trajectory allowing insects to enter dormancy and persist through predictable periods of seasonally unfavorable conditions. This crucial ecological adaptation defines the geographic and seasonal abundance of many insect pollinators, pests, and vectors. Understanding the hormonal changes by which insects coordinate the perception of external, diapause-inducing cues with the physiological mechanisms that lead to developmental arrest is a long-standing goal in biology. The hormonal regulation of diapause tends to vary by the life stage at which development arrest occurs; for example, diapause is typically regulated by ecdysteroids in larvae and pupae, and by juvenile hormones in adults. However, little is known about the hormonal control of embryonic diapause, particularly in Diptera. To address this fundamental gap, we directly measured 20-hydroxyecdysone (20HE) (via LC-MS/MS) and juvenile hormone III (JH3) (via GC-MS) in diapause and non-diapause eggs of the Asian tiger mosquito, Aedes albopictus. While 20HE abundance did not differ, diapause eggs had lower JH3 abundance than non-diapause eggs. These results are corroborated by transcriptional and manipulative evidence suggesting that reduced JH3 regulates diapause in this medically important mosquito. |
| Databáze: | OpenAIRE |
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