Colloquium Biometricum

Tom: 46 Strona: 71

Autorzy:

Tytuł:
The effect of the orchard habitat structure and year on apple clearwing moth S. Myopaeformis abundance

Język: Angielski

Słowa kluczowe:

Synanthedon myopaeformis

Liotryphon crassiseta

Sesiidae

Ichneumonidae

orchard

plants of orchard edge

ANOVA

three-way model

Tukey test

Streszczenie:
In years 2008-2010 in orchard habitat near Czempiń in south Wielkopolska a mass appearance of apple clearwing moth Synanthedon myopaeformis and his larval ectoparasitoid Liotryphon crassiseta was stated. There were 7960 specimens of phytophage and 415 specimens of parasitoid caught using Moerick yellow traps. In order to evaluate the influence of orchard habitat structures and years on the number of both species statistical analysis such as ANOVA and Tukey test were conducted.
It was shown that biocenoses types, namely: apple orchards and orchard edges plants in form of field crops, shrubberies and road grown with trees and shrubs, effected essentially on the number of S. myopaeformis and L. crassiseta. Also years effected essentially on the number of both species, however effect of biocenoses type was independent of years.
It was stated that in case of S. myopaeformis the effect of orchard and orchard edges plants on the number of this species differed between each other. For L. crassiseta such difference was not observed.
It was determined that S. myopaeformis is a species closely connected with apple orchards and weakly moving towards adjacent biocenoses while L. crassiseta shifts between adjacent habitats. It was shown that this shifting occurs when the edges were a well-developed plant structures in the form of shrubberies and road grown with trees and shrubs.
Summarizing, well-developed plants of the orchard edges affected on the phytophage S. myopaeformis number in a lesser degree than on his larval ectoparasitoid L. crassiseta in apple orchard. Therefore orchard edges plants can determine the occurrence of entomophagy in fruit crops. These entomophagy can regulate the number of pests feeding in this habitat.