Vitellogenin regulates hormonal dynamics in the worker caste of a eusocial insect | Zendy

Guidugli Karina R. | Zendy; Nascimento Adriana M. | Zendy; Amdam Gro V. | Zendy; Barchuk Angel R. | Zendy; Omholt Stig | Zendy; Simões Zilá L.P. | Zendy; Hartfelder Klaus | Zendy

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Vitellogenin regulates hormonal dynamics in the worker caste of a eusocial insect

Author(s) -

Guidugli Karina R.,

Nascimento Adriana M.,

Amdam Gro V.,

Barchuk Angel R.,

Omholt Stig,

Simões Zilá L.P.,

Hartfelder Klaus

Publication year - 2005

Publication title -

febs letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.593

H-Index - 257

eISSN - 1873-3468

pISSN - 0014-5793

DOI - 10.1016/j.febslet.2005.07.085

Subject(s) - eusociality , vitellogenin , insect , caste , hormone , biology , vitellogenins , dynamics (music) , microbiology and biotechnology , zoology , evolutionary biology , endocrinology , genetics , ecology , vitellogenesis , oocyte , hymenoptera , psychology , gene , embryo , linguistics , philosophy , pedagogy

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.

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