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Insect fauna associated with invasive plants

Insect fauna associated with invasive plants. Aleš Bezděk. Terminology. - native (indigenous) - alien (introduced, exotic) - invasive (naturalized). 1) Communities „saturate“ with species in ecological time. a) coevolution theory. b) native specialists extend their host range.

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Insect fauna associated with invasive plants

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  1. Insect fauna associated with invasive plants Aleš Bezděk

  2. Terminology - native (indigenous) - alien (introduced, exotic) - invasive (naturalized)

  3. 1) Communities „saturate“ with species in ecological time a) coevolution theory b) native specialists extend their host range c) exotic specialists could invade the associated communities

  4. Leptinotarsa decemlineata Impatientinum asiaticum

  5. 2) taxonomic isolation a) congeneric b) confamilial c) different families Impatiens noli-tangere Impatiens parviflora Impatiens glandulifera

  6. Galinsoga parviflora Galinsoga ciliata

  7. Rhus typhina

  8. 3) large areas support more species than small areas

  9. 4) plant architecture Heracleum mantegazzianum Heracleum sphondylium

  10. Examples of invasive insects

  11. Cameraria ohridella Deschka & Dimic, 1986 (Lepidoptera: Gracillaridae)

  12. C. ohridella - life cycle

  13. C. ohridella - map of distribution

  14. Diabrotica virgifera LeConte, 1858 (Coleoptera: Chrysomelidae)

  15. D. virgifera - damage

  16. D. virgifera - map of distribution in Europe

  17. Anoplophora glabripennis (Motschulsky, 1853) (Coleoptera: Cerambycidae)

  18. A. glabripennis and trees affected trees: Acer platanoides, Acer rubrum, Acer saccharinum, Acer saccharum, Aesculus hippocastanus, Betula populifolia, Fraxinus pennsylvanica, Salix babylonica, Salix discolor, Ulmus americana, Ulmus pumila resistant trees: Catalpa spp., Corylus colurna, Gleditschia triacanthos, Juniperus spp., Liriodendron tulipifera, Quercus alba, Quercus macrocarpa, Quercus robus, Taxodium distichum, Thuja plicata, Thuja occidentalis

  19. Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) • species from Asia • (central Asia to Japan) • introduced to Europe • and North America to • control aphids

  20. Harmonia axyridis – its distribution in Europe

  21. Harmonia axyridis – larval stages

  22. Harmonia axyridis – topics of current research • impact to native lady-bird species • spectrum of its prey (in relation do C. septempunctata) • influence of environmental factors to its development

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