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Current distribution and voltinism of the brown marmorated stink bug, Halyomorpha halys, in Switzerland and its response to climate change using a high-resolution CLIMEX model


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Stöckli, Sibylle; Felber, Raphael and Haye, Tim (2020) Current distribution and voltinism of the brown marmorated stink bug, Halyomorpha halys, in Switzerland and its response to climate change using a high-resolution CLIMEX model. International Journal of Biometeorology, online, pp. 1-14.

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Online at: https://doi.org/10.1007/s00484-020-01992-z


Climate change can alter the habitat suitability of invasive species and promote their establishment. The highly polyphagous brown marmorated stinkbug, Halyomorpha halys Stål (Hemiptera: Pentatomidae), is native to East Asia and invasive in Europe and North America, damaging a wide variety of fruit and vegetable crops. In Switzerland, crop damage and increasing populations have been observed since 2017 and related to increasing temperatures. We studied the climatic suitability, population growth, and the number of generations under present and future climate conditions for H. halys in Switzerland, using a modified version of the bioclimatic model package CLIMEX. To address the high topographic variability in Switzerland, model simulations
were based on climate data of high spatial resolution (approx. 2 km), which significantly increased their explanatory power, and identified many more climatically suitable areas in comparison to previous models. The validation of the CLIMEX model using observational records collected in a citizen science initiative between 2004 and 2019 revealed that more than 15 years after its accidental introduction, H. halys has colonised nearly all bioclimatic suitable areas in Switzerland and there is limited potential
for range expansion into new areas under present climate conditions. Simulations with climate change scenarios suggest an extensive range expansion into higher altitudes, an increase in generations per year, an earlier start of H. halys activity in spring and a prolonged period for nymphs to complete development in autumn. A permanent shift from one to two generations per year and the associated population growth of H. halys may result in increasing crop damages in Switzerland. These results highlight the need for monitoring the

EPrint Type:Journal paper
Keywords:CLIMEX, Climate change scenarios, Localised climate data, Climate impactmodels, Invasive species
Agrovoc keywords:
Englishclimate changehttp://aims.fao.org/aos/agrovoc/c_1666
Subjects: Knowledge management > Research methodology and philosophy > Specific methods
Crop husbandry > Production systems > Fruit and berries
Crop husbandry > Crop health, quality, protection
Environmental aspects > Landscape and recreation
Knowledge management > Research methodology and philosophy
Research affiliation: Switzerland > Agroscope
Switzerland > Swiss Federal Office for Agriculture FOAG
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Entomolgy
Deposited By: Stöckli, Dr. Sibylle
ID Code:38345
Deposited On:07 Sep 2020 13:23
Last Modified:07 Sep 2020 13:23
Document Language:English
Refereed:Peer-reviewed and accepted

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