A Gene Necessary for Reproductive Suppression in Termites

  title={A Gene Necessary for Reproductive Suppression in Termites},
  author={Judith Korb and Tobias Weil and Katharina Hoffmann and Kevin R. Foster and Michael Rehli},
  pages={758 - 758}
Knocking out the Neofem2 gene in queen termites illicits pre-reproductive behavior in workers. A major transition in evolution is the origin of a division between reproduction and work among individuals. Nowhere is this divide more striking than in social insects, where workers rarely produce offspring even though they are often capable of reproduction should the queen or king die. The molecular mechanisms that control worker reproduction remain largely unknown. We used a combination of… Expand
Genes Underlying Reproductive Division of Labor in Termites, with Comparisons to Social Hymenoptera
  • J. Korb
  • Biology
  • Front. Ecol. Evol.
  • 2016
The genes and their function that have been identified to underlie reproductive division of labor in the drywood termite Cryptotermes secundus, an emerging model to study termite social evolution are provided. Expand
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  • J. Korb
  • Biology, Medicine
  • Journal of Chemical Ecology
  • 2018
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A genetic influence on caste determination underlying the asexual queen succession system in the termite Reticulitermes speratus is demonstrated and the existence of a multi-locus system affecting the queen fecundity is suggested and explained. Expand
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Cuckoo Fungus Mimics Termite Eggs by Producing the Cellulose-Digesting Enzyme β-Glucosidase
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Data from the first in vivo inhibition tests indicate that a glycosidase could be directly involved in the production process of some pheromonal compounds in L. maderae males. Expand
beta-Glucosidase: an elicitor of herbivore-induced plant odor that attracts host-searching parasitic wasps.
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Fuchs , Behaviour 143 , 891 ( 2006 ) . S 5 . J . Korb , Front . Zool . 4 , 7 ( 2007 ) . S 6 . L . V . Garcia , Oikos
  • Nucleic Acids Res .
  • 2008
Materials and methods are available as supporting material on Science Online
    The authors thank S. Schneuwly and J. Landskron for micromanipulator help and K. Merches and K. Borner for laboratory support