ABS85844
The effect of  hatch characteristics on interspecific competition between potato cyst nematode species.


  • Oral Presentation
  • Agriculture and Soil Science
  • 11 Jun 2018 16:45
  • FS-G01, UCD Agriculture and food science Centre
  • View all IPSAM abstracts

Rachel Hearne
School of Biological, Earth and Environmental Sciences, University College Cork

Eoin Lettice*
School of Biological, Earth and Environmental Sciences, University College Cork

Peter Jones
School of Biological, Earth and Environmental Sciences, University College Cork

*Presenting Author


Potato cyst nematodes ( PCN; Globodera pallida and G. rostochiensis) are major pests of the potato crop and are considered some of the most economically important plant-parasitic nematodes in agriculture. The effect of interspecific competition between these two sibling species has been examined and G. pallida has been shown to out-compete G. rostochiensis in mixed-species populations. In order to assess the role of hatching characteristics in G. pallida's relative success in competition, a series of in vitro hatching bioassays were conducted to assess differential hatching responses of the two species under various abiotic and biotic hatching conditions. The results of the assays suggest that the optimum temperature for hatch differs between the two species. Additionally, the production of species-specific compunds that stimulate or inhibit hatch also may have a role to play in the relative success of G. pallida against G. rostochiensis in mixed-species populations. These results contribute to our understanding of the biology of these important pests and may lead to improved control measures.