Parasitoids of the bedeguar gall (Diplolepis rosae): Effect of host scale on density and prevalence

Z. László, B. Tóthmérész

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Host plants have significant effects on parasitoid and herbivore distribution. There are just a few reports on tritrophic interactions. We aimed to study the relationships between rose host shrub and Bedeguar gall density with special attention to densities and prevalence of parasitoids at two scales: host shrub and gall. We found that gall density was inversely density dependent of shrub density. Parasitoid density was density dependent of both rose shrub and gall scales, while prevalence of parasitoids was density dependent at the shrub scale, but density independent at the gall scale. This pattern is likely to occur when parasitoids prefer those shrubs which are infected with galls and avoid uninfected shrubs and support optimal foraging theory.

Original languageEnglish
Pages (from-to)219-232
Number of pages14
JournalActa Zoologica Academiae Scientiarum Hungaricae
Volume57
Issue number3
Publication statusPublished - 2011

Fingerprint

Diplolepis rosae
gall
galls
parasitoids
shrub
shrubs
parasitoid
Rosa
tritrophic interaction
tritrophic interactions
effect
host plant
herbivore
herbivores

Keywords

  • Gall wasp
  • Optimal foraging theory
  • Parasitism
  • Rosa spp.
  • Tritrophic interactions

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

Cite this

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abstract = "Host plants have significant effects on parasitoid and herbivore distribution. There are just a few reports on tritrophic interactions. We aimed to study the relationships between rose host shrub and Bedeguar gall density with special attention to densities and prevalence of parasitoids at two scales: host shrub and gall. We found that gall density was inversely density dependent of shrub density. Parasitoid density was density dependent of both rose shrub and gall scales, while prevalence of parasitoids was density dependent at the shrub scale, but density independent at the gall scale. This pattern is likely to occur when parasitoids prefer those shrubs which are infected with galls and avoid uninfected shrubs and support optimal foraging theory.",
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