Habitat selection of a parasitoid mediated by volatiles informing on host and intraguild predator densities
作者: Belén CotesLinda-Marie RännbäckMaria BjörkmanHans Ragnar NorliNicolai V. MeylingBirgitta RämertPeter Anderson
作者单位: 1Swedish University of Agricultural Sciences
2Norwegian Institute for Agricultural and Environmental Research (Bioforsk)
3University of Copenhagen
刊名: Oecologia, 2015, Vol.179 (1), pp.151-162
来源数据库: Springer Nature Journal
DOI: 10.1007/s00442-015-3326-2
关键词: Delia radicumEntomopathogenic fungusForaging decisionTrade-offTrybliographa rapae
英文摘要: Abstract(#br)To locate and evaluate host patches before oviposition, parasitoids of herbivorous insects utilize plant volatiles and host-derived cues, but also evaluate predator-derived infochemicals to reduce predation risks. When foraging in host habitats infested with entomopathogenic fungi that can infect both a parasitoid and its host, parasitoids may reduce the risk of intraguild predation (IGP) by avoiding such patches. In this study, we examined whether the presence of the entomopathogenic fungi Metarhizium brunneum and Beauveria bassiana in soil habitats of a root herbivore, Delia radicum, affects the behavior of Trybliographa rapae , a parasitoid of D. radicum . Olfactometer bioassays revealed that T. rapae avoided fungal infested host habitats and that this was dependent on...
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影响因子:3.011 (2012)

  • informing 告知
  • parasitoid 寄生样的
  • predator 捕食者
  • selection 选择
  • volatiles 挥发物