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@ARTICLE{Kunert:56312,
      author       = {Kunert, G. and Otto, S. and Röse, U. S. R. and Gershenzon,
                      J. and Weisser, W. W.},
      title        = {{A}larm pheromone mediates production of winged dispersal
                      morphs in aphids},
      journal      = {Ecology letters},
      volume       = {8},
      issn         = {1461-023X},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {PreJuSER-56312},
      pages        = {596 - 603},
      year         = {2005},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The aphid alarm pheromone (E)-β-farnesene (EBF) is the
                      major example of defence communication in the insect world.
                      Released when aphids are attacked by predators such as
                      ladybirds or lacewing larvae, aphid alarm pheromone causes
                      behavioural reactions such as walking or dropping off the
                      host plant. In this paper, we show that the exposure to
                      alarm pheromone also induces aphids to give birth to winged
                      dispersal morphs that leave their host plants. We first
                      demonstrate that the alarm pheromone is the only volatile
                      compound emitted from aphid colonies under predator attack
                      and that emission is proportional to predator activity. We
                      then show that artificial alarm pheromone induces groups of
                      aphids but not single individuals to produce a higher
                      proportion of winged morphs among their offspring.
                      Furthermore, aphids react more strongly to the frequency of
                      pheromone release than the amount of pheromone delivered. We
                      suggest that EBF leads to a ‘pseudo crowding’ effect
                      whereby alarm pheromone perception causes increased walking
                      behaviour in aphids resulting in an increase in the number
                      of physical contacts between individuals, similar to what
                      happens when aphids are crowded. As many plants also produce
                      EBF, our finding suggests that aphids could be manipulated
                      by plants into leaving their hosts, but they also show that
                      the context-dependence of EBF-induced wing formation may
                      hinder such an exploitation of intraspecific signalling by
                      plants.},
      cin          = {ICG-III},
      ddc          = {570},
      cid          = {I:(DE-Juel1)VDB49},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Ecology},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000229389500003},
      doi          = {10.1111/j.1461-0248.2005.00754.x},
      url          = {https://juser.fz-juelich.de/record/56312},
}