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  • populations
  • The aim of this research was to determine if the observed differences in the levels of infection in C. arvense populations within New Zealand was due to genetic differences between P. punctiformis isolates. (lincoln.ac.nz)
  • We examined genetic diversity among more than 2000 individuals representing nearly 100 North American populations of C. arvense using 7 different microsatellite markers. (usda.gov)
  • Biological
  • P. punctiformis has the potential to be a successful biological control agent as it is already present in New Zealand and can systemically and locally infect C. arvense. (lincoln.ac.nz)
  • shoots
  • A survey of 22 sites in the North and South Islands of New Zealand was undertaken to determine the percentage of P. punctiformis infected C. arvense shoots in a designated area. (lincoln.ac.nz)
  • genetic
  • The study has indicated there is genetic diversity in P. punctiformis in New Zealand which could explain the observed differences in infection of C. arvense in the field. (lincoln.ac.nz)
  • habitat
  • British NVC community OV25 (Urtica dioica - Cirsium arvense community) is one of the open habitat communities in the British National Vegetation Classification system. (wikipedia.org)
  • lightly
  • This community is found throughout lowland Britain, on disturbed, nutrient-rich soils, usually where there are patches of bare or lightly covered ground, in which thistles can establish themselves. (wikipedia.org)
  • Europe
  • Side view Wing detail Play media Oviposition (video clip) Play media Feeding on thistle (video clip) Korneyev, V. A. - New and little-known Tephritidae (Diptera, Cyclorrhapha) from Europe in Vestnik Zoologii Merz, B. - Faunistics of the Tephritidae of the Iberian Peninsula and the Baleares in Mitt. (wikipedia.org)
  • wings
  • it is a challenge to get a photograph of them with their wings open List of Lepidoptera that feed on Cirsium - thistles California State Library Retrieved August 25, 2017. (wikipedia.org)