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The vegetation of allotment gardens is an important element of urban green areas and constitutes a habitat where many groups of insects exist, including aphids. This research involved the monitoring of winged morphs of aphids in allotment gardens in the area of Poznań with the use of Moericke traps. The fauna structure of aphids in two large allotment gardens was demonstrated by comparing the activity...
The bionomy and ecology of Aphis craccivora on Robinia pseudoacacia was studied. The number of generations per year was determined, as well the lifespan of a generation and fecundity of the females. For the first time the strategy of development of a dangerous pest has been determined which enables it to spread worldwide. A. craccivora is a cosmopolitan species. It is a polyphagous insect settling...
In temperate climate zones, where a continental climate prevails, the appearance of males in populations of most aphid species takes place only in the autumn. Holocyclic and heteroecious species typically have winged males obligatorily. In holocyclic and monoecious species, males are not always winged morphs. Photoperiod is the primary factor responsible for the change in the manner of reproduction,...
Refuge habitats have a stabilising effect on the entomofauna in the agricultural landscape. The objective of this research was to follow the migrant activity of aphids in two types of refuge habitats: shrubs and roadsides of rural areas. Moericke traps method were used for testing the seasonal activity of aphids. The dynamics of species numbers were assessed, and the phenology of the dominating taxa...
Brachycaudus divaricatae - was described by Shaposhnikov in the Middle East as a heteroecious aphid species migrating between Prunus divaricata and Melandrium album. The research conducted in Poland proved that this species can be described as holocyclic and monoecious. A significantly shortened development cycle with a summer-winter diapause characterizes this species in Poland. The aim of our studies...
Heavily urbanised areas are not a favourable habitat for plant growth and development. On the other hand, urbanised areas can be a favourable habitat for harmful fauna. Tin our study, those trees growing along the roadside were more heavily infested by pests than trees growing in parks. Three orders of insects, mites and lugs were identified on the Norway maple. The dominant insect species was Periphyllus...
The studies were conducted in an urban greenery area of Poznań, Poland to compare the effectiveness of Moericke colour traps and light traps used to catch aphids. The combined methods yielded 61 aphid species from the area. The light trap caught 51 species, while 44 species were caught using the Moericke trap. Over 4,000 specimens were collected with each method separately.
The study was aimed at determining the species composition of aphid fauna related to the dendroflora of Kórnik Arboretum as well as determining the infestation level of trees and shrubs. The infestation level was measured on a five-level scale. The material was collected on two sites: in a park and forest. 236 botanic taxa (species and cultivars) were confirmed to be infested by aphids in Kórnik Arboretum;...
The many years’ study on species composition and harmfulness of aphids infesting perennials in the decorative plant collection Agricultural University in Poznań permited to ascertain occurrence of 23 aphid species on 66 species of decoratice perennials, representing 20 botanical families. The species that occurred in all the four study seasons in 2000, 2002, 2003 and 2005 included: Aphis fabae Scop...
The research was carried out in the years 1991–1994 in agricultural landscape of medium mosaic degree in the area of Łęczyca. It covered parasitoids of the Pimplinae subfamily (Hymenoptera, Ichneumonidae), inhabiting refugium habitats such as shrubberies, field borders, roadsides and forest edges. The method used was scooping in order to catch imagos. 48 species were found, which made up 36.1% of...
Results of two-year studies on the aphids number in different uncultivated habitats (field boundaries, roadsides, field shrubs and forest margins) are presented. The analysis of data permitted to distinguish two basic types of change in the aphids number in a vegetation season.
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