Exposure to an additional alternating magnetic field affects comb building by worker hornets

Jacob S. Ishay, Marian Plotkin, Stanislav Volynchik, Meir Shaked, Zeev Schuss, David J. Bergman

Research output: Contribution to journalArticlepeer-review

Abstract

Oriental hornet workers, kept in an Artificial Breeding Box (ABB) without a queen, construct within a few days brood combs of hexagonal cells with apertures facing down. These combs possess stems that fasten the former to the roof of the ABB. In an ABB with adult workers (more than 24 h after eclosion), exposed to an AC (50 Hz) magnetic field of a magnitude of B = 50-70 mGauss, the combs and cells are built differently from those of a control ABB, subjected only to the natural terrestrial magnetic field. The effects of the additional magnetic field consist of (a) 35-55% smaller number of cells and fewer eggs in each comb, (b) disrupted symmetry of building, with many deformed and imperfectly hexagonal cells, and (c) more delicate and slender comb stems.

Original languageEnglish
Pages (from-to)83-88
Number of pages6
JournalPhysiological Chemistry and Physics and Medical NMR
Volume39
Issue number1
StatePublished - 2007

Keywords

  • Comb building
  • Gravity-oriented comb cells
  • Hymenoptera
  • Magnetic field
  • Oriental hornet

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