Predicting habitat suitability for Ixodes ricinus and Ixodes persulcatus ticks in Finland
Abstract Background Ticks are responsible for transmitting several notable pathogens worldwide. Finland lies in a zone where two human-biting tick species co-occur: Ixodes ricinus and Ixodes persulcatus. Tick densities have increased in boreal regions worldwide during past decades, and tick-borne pa...
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/579973 2024-09-15T18:18:55+00:00 Predicting habitat suitability for Ixodes ricinus and Ixodes persulcatus ticks in Finland Uusitalo, Ruut Siljander, Mika Lindén, Andreas Sormunen, Jani J. Aalto, Juha Hendrickx, Guy Kallio, Eva Vajda, Andrea Gregow, Hilppa Henttonen, Heikki Marsboom, Cedric Korhonen, Essi M. Sironen, Tarja Pellikka, Petri Vapalahti, Olli 2024-07-30T14:47:07Z application/pdf http://hdl.handle.net/10138/579973 https://doi.org/10.1186/s13071-022-05410-8 en eng Parasites & Vectors. 2022 Aug 30;15(1):310 https://doi.org/10.1186/s13071-022-05410-8 http://hdl.handle.net/10138/579973 The Author(s) Journal Article 2024 ftunivhelsihelda https://doi.org/10.1186/s13071-022-05410-8 2024-07-31T23:42:50Z Abstract Background Ticks are responsible for transmitting several notable pathogens worldwide. Finland lies in a zone where two human-biting tick species co-occur: Ixodes ricinus and Ixodes persulcatus. Tick densities have increased in boreal regions worldwide during past decades, and tick-borne pathogens have been identified as one of the major threats to public health in the face of climate change. Methods We used species distribution modelling techniques to predict the distributions of I. ricinus and I. persulcatus, using aggregated historical data from 2014 to 2020 and new tick occurrence data from 2021. By aiming to fill the gaps in tick occurrence data, we created a new sampling strategy across Finland. We also screened for tick-borne encephalitis virus (TBEV) and Borrelia from the newly collected ticks. Climate, land use and vegetation data, and population densities of the tick hosts were used in various combinations on four data sets to estimate tick species’ distributions across mainland Finland with a 1-km resolution. Results In the 2021 survey, 89 new locations were sampled of which 25 new presences and 63 absences were found for I. ricinus and one new presence and 88 absences for I. persulcatus. A total of 502 ticks were collected and analysed; no ticks were positive for TBEV, while 56 (47%) of the 120 pools, including adult, nymph, and larva pools, were positive for Borrelia (minimum infection rate 11.2%, respectively). Our prediction results demonstrate that two combined predictor data sets based on ensemble mean models yielded the highest predictive accuracy for both I. ricinus (AUC = 0.91, 0.94) and I. persulcatus (AUC = 0.93, 0.96). The suitable habitats for I. ricinus were determined by higher relative humidity, air temperature, precipitation sum, and middle-infrared reflectance levels and higher densities of white-tailed deer, European hare, and red fox. For I. persulcatus, locations with greater precipitation and air temperature and higher white-tailed deer, roe deer, and mountain hare ... Article in Journal/Newspaper mountain hare HELDA – University of Helsinki Open Repository Parasites & Vectors 15 1 |
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Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
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ftunivhelsihelda |
language |
English |
description |
Abstract Background Ticks are responsible for transmitting several notable pathogens worldwide. Finland lies in a zone where two human-biting tick species co-occur: Ixodes ricinus and Ixodes persulcatus. Tick densities have increased in boreal regions worldwide during past decades, and tick-borne pathogens have been identified as one of the major threats to public health in the face of climate change. Methods We used species distribution modelling techniques to predict the distributions of I. ricinus and I. persulcatus, using aggregated historical data from 2014 to 2020 and new tick occurrence data from 2021. By aiming to fill the gaps in tick occurrence data, we created a new sampling strategy across Finland. We also screened for tick-borne encephalitis virus (TBEV) and Borrelia from the newly collected ticks. Climate, land use and vegetation data, and population densities of the tick hosts were used in various combinations on four data sets to estimate tick species’ distributions across mainland Finland with a 1-km resolution. Results In the 2021 survey, 89 new locations were sampled of which 25 new presences and 63 absences were found for I. ricinus and one new presence and 88 absences for I. persulcatus. A total of 502 ticks were collected and analysed; no ticks were positive for TBEV, while 56 (47%) of the 120 pools, including adult, nymph, and larva pools, were positive for Borrelia (minimum infection rate 11.2%, respectively). Our prediction results demonstrate that two combined predictor data sets based on ensemble mean models yielded the highest predictive accuracy for both I. ricinus (AUC = 0.91, 0.94) and I. persulcatus (AUC = 0.93, 0.96). The suitable habitats for I. ricinus were determined by higher relative humidity, air temperature, precipitation sum, and middle-infrared reflectance levels and higher densities of white-tailed deer, European hare, and red fox. For I. persulcatus, locations with greater precipitation and air temperature and higher white-tailed deer, roe deer, and mountain hare ... |
format |
Article in Journal/Newspaper |
author |
Uusitalo, Ruut Siljander, Mika Lindén, Andreas Sormunen, Jani J. Aalto, Juha Hendrickx, Guy Kallio, Eva Vajda, Andrea Gregow, Hilppa Henttonen, Heikki Marsboom, Cedric Korhonen, Essi M. Sironen, Tarja Pellikka, Petri Vapalahti, Olli |
spellingShingle |
Uusitalo, Ruut Siljander, Mika Lindén, Andreas Sormunen, Jani J. Aalto, Juha Hendrickx, Guy Kallio, Eva Vajda, Andrea Gregow, Hilppa Henttonen, Heikki Marsboom, Cedric Korhonen, Essi M. Sironen, Tarja Pellikka, Petri Vapalahti, Olli Predicting habitat suitability for Ixodes ricinus and Ixodes persulcatus ticks in Finland |
author_facet |
Uusitalo, Ruut Siljander, Mika Lindén, Andreas Sormunen, Jani J. Aalto, Juha Hendrickx, Guy Kallio, Eva Vajda, Andrea Gregow, Hilppa Henttonen, Heikki Marsboom, Cedric Korhonen, Essi M. Sironen, Tarja Pellikka, Petri Vapalahti, Olli |
author_sort |
Uusitalo, Ruut |
title |
Predicting habitat suitability for Ixodes ricinus and Ixodes persulcatus ticks in Finland |
title_short |
Predicting habitat suitability for Ixodes ricinus and Ixodes persulcatus ticks in Finland |
title_full |
Predicting habitat suitability for Ixodes ricinus and Ixodes persulcatus ticks in Finland |
title_fullStr |
Predicting habitat suitability for Ixodes ricinus and Ixodes persulcatus ticks in Finland |
title_full_unstemmed |
Predicting habitat suitability for Ixodes ricinus and Ixodes persulcatus ticks in Finland |
title_sort |
predicting habitat suitability for ixodes ricinus and ixodes persulcatus ticks in finland |
publishDate |
2024 |
url |
http://hdl.handle.net/10138/579973 https://doi.org/10.1186/s13071-022-05410-8 |
genre |
mountain hare |
genre_facet |
mountain hare |
op_relation |
Parasites & Vectors. 2022 Aug 30;15(1):310 https://doi.org/10.1186/s13071-022-05410-8 http://hdl.handle.net/10138/579973 |
op_rights |
The Author(s) |
op_doi |
https://doi.org/10.1186/s13071-022-05410-8 |
container_title |
Parasites & Vectors |
container_volume |
15 |
container_issue |
1 |
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1810457014821715968 |