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High host plant aggregation involves uniform gall distribution and high prevalence: the case of wild roses and Bedeguar gall wasps (Diplolepis rosae)

Domenii publicaţii > Biologie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Zoltán László, Béla Tóthmérész

Editorial: NORTH-WESTERN JOURNAL OF ZOOLOGY, 7(1), p.112-117, 2011.


We studied the effect of rose shrub spatial pattern and density toward its parasitism by Diplolepis
rosae gall wasps, considering host shrubs’ size. There were eight sample sites on dry pastures and/or on the
edges of these pastures. Our results show that high densities rose shrubs show uniform distribution, while
the low densities ones appear aggregated. Gall density and prevalence are affected by host plant aggregation.
Gall aggregation is inversely related with host plant aggregation. The plant architecture hypothesis regarding
rose shrub size was not supported

Cuvinte cheie: host plant density, Poulin's index of discrepancy (PID), gall prevalence, gall density, plant architecture hypothesis