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- Title
Vitellogenin regulates hormonal dynamics in the worker caste of a eusocial insect
- Authors
Guidugli, Karina R.; Nascimento, Adriana M.; Amdam, Gro V.; Barchuk, Angel R.; Omholt, Stig; Simões, Zilá L.P.; Hartfelder, Klaus
- Abstract
Abstract: Functionally sterile honey bee workers synthesize the yolk protein vitellogenin while performing nest tasks. The subsequent shift to foraging is linked to a reduced vitellogenin and an increased juvenile hormone (JH) titer. JH is a principal controller of vitellogenin expression and behavioral development. Yet, we show here that silencing of vitellogenin expression causes a significant increase in JH titer and its putative receptor. Mathematically, the increase corresponds to a dynamic dose–response. This role of vitellogenin in the tuning of the endocrine system is uncommon and may elucidate how an ancestral pathway of fertility regulation has been remodeled into a novel circuit controlling social behavior.
- Subjects
HONEYBEES; NECTAR; HORMONES; REPRODUCTION
- Publication
FEBS Letters, 2005, Vol 579, Issue 22, p4961
- ISSN
0014-5793
- Publication type
Article
- DOI
10.1016/j.febslet.2005.07.085