en
Doctoral thesis
Open access
English

The impact of climate change on the development of agricultural pests, their hosts and natural enemies: Assessing overlaps in trophic interactions

ContributorsCastex, Victorine
Defense date2019-10-24
Abstract

This thesis assess impacts of warming temperatures on future Grapevine (Vitis vinifera) and one of its major insect pest known as grapevine moth (Lobesia botrana)synchrony. The phenology of both trophic levels has already changed over the last decades in response to increases in temperature, with a tendency towards earlier development. The impact of rising temperatures could alter phenology and lead to unequal shifts within food chains, being either beneficial or detrimental to host plants. The pressure for reducing the use of chemicals in conventional agriculture is getting stronger in the last decade. Biocontrol by targeting the eggs of other insects is an efficient alternative to pesticides. This study aimed at understanding how L. botrana will evolve with respect to both its lower (V. vinifera) and upper (Trichogramma Spp.) trophic levels under warmer conditions in the future, considering the forcing pathways RCP4.5 and RCP8.5, at European scale, by the means of generic phenological models.

eng
Keywords
  • Phenological models
  • Climate change scenarios
  • Trophic interactions
  • Synchrony
  • Shifts
  • Risk
  • Voltinism
Funding
  • Autre - Ernst et Lucie Schmidheiny
Citation (ISO format)
CASTEX, Victorine. The impact of climate change on the development of agricultural pests, their hosts and natural enemies: Assessing overlaps in trophic interactions. 2019. doi: 10.13097/archive-ouverte/unige:138537
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Thesis
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Technical informations

Creation07/06/2020 1:01:00 PM
First validation07/06/2020 1:01:00 PM
Update time05/30/2023 12:09:18 PM
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