Expansion of elevational range in a forest pest: Can parasitoids track their hosts?
Abstract Gradients in elevation impose changes in environmental conditions, which in turn modulate species distribution and abundance as well as the interactions they maintain. Along the gradient, interacting species (e.g., predators, parasitoids) can respond to changes in different ways. This study...
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ftdoajarticles:oai:doaj.org/article:3c140a5c56a5435d8afa6d786623dcad 2023-05-15T17:32:02+02:00 Expansion of elevational range in a forest pest: Can parasitoids track their hosts? José A. Hódar Luis Cayuela Daniel Heras Antonio J. Pérez‐Luque Lucía Torres‐Muros 2021-04-01T00:00:00Z https://doi.org/10.1002/ecs2.3476 https://doaj.org/article/3c140a5c56a5435d8afa6d786623dcad EN eng Wiley https://doi.org/10.1002/ecs2.3476 https://doaj.org/toc/2150-8925 2150-8925 doi:10.1002/ecs2.3476 https://doaj.org/article/3c140a5c56a5435d8afa6d786623dcad Ecosphere, Vol 12, Iss 4, Pp n/a-n/a (2021) biological control elevational gradient host–parasitoid interactions North Atlantic Oscillation Index pest dynamic pine processionary moth Ecology QH540-549.5 article 2021 ftdoajarticles https://doi.org/10.1002/ecs2.3476 2022-12-31T12:40:33Z Abstract Gradients in elevation impose changes in environmental conditions, which in turn modulate species distribution and abundance as well as the interactions they maintain. Along the gradient, interacting species (e.g., predators, parasitoids) can respond to changes in different ways. This study aims to investigate how egg parasitism of a forest pest, the pine processionary moth (PPM), Thaumetopoea pityocampa, vary along an elevational gradient (190–2000 m.a.s.l.) in a mountain range of SE Spain, including areas of recent elevational expansion, for a seven years period (2008–2014). We used generalized linear mixed models to ascertain the effect of both elevation and the winter North Atlantic Oscillation (NAO) index (a proxy of interannual climatic conditions) on the rate of parasitism, and the occurrence probabilities of two parasitoid species: a PPM specialist and a generalist species. Since four pine species are stratified along the elevational gradient, we repeated all the analyses separately for lowlands (190–1300 m. a.s.l.) and uplands (1350–2000 m. a.s.l.). Results showed a decrease in both parasitism rate and probability of occurrence of the two main parasitoid species with elevation, although decline was more severe for the specialist species. The effect of elevation was more conspicuous and intense in uplands than in lowlands. Positive NAO winter values, associated with cold and dry winters, reduced the rate of parasitism and the probability of occurrence of the two main parasitoid species—but particularly for the generalist species—as elevation increases. In a context of climate warming, it is crucial to mitigate PPM elevational and latitudinal expansion. Increasing tree diversity at the PPM expansion areas may favor the establishment of parasitoids, which could contribute to synchronizing host– parasitoid interactions and minimize the risk of PPM outbreaks. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Directory of Open Access Journals: DOAJ Articles Ecosphere 12 4 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
biological control elevational gradient host–parasitoid interactions North Atlantic Oscillation Index pest dynamic pine processionary moth Ecology QH540-549.5 |
spellingShingle |
biological control elevational gradient host–parasitoid interactions North Atlantic Oscillation Index pest dynamic pine processionary moth Ecology QH540-549.5 José A. Hódar Luis Cayuela Daniel Heras Antonio J. Pérez‐Luque Lucía Torres‐Muros Expansion of elevational range in a forest pest: Can parasitoids track their hosts? |
topic_facet |
biological control elevational gradient host–parasitoid interactions North Atlantic Oscillation Index pest dynamic pine processionary moth Ecology QH540-549.5 |
description |
Abstract Gradients in elevation impose changes in environmental conditions, which in turn modulate species distribution and abundance as well as the interactions they maintain. Along the gradient, interacting species (e.g., predators, parasitoids) can respond to changes in different ways. This study aims to investigate how egg parasitism of a forest pest, the pine processionary moth (PPM), Thaumetopoea pityocampa, vary along an elevational gradient (190–2000 m.a.s.l.) in a mountain range of SE Spain, including areas of recent elevational expansion, for a seven years period (2008–2014). We used generalized linear mixed models to ascertain the effect of both elevation and the winter North Atlantic Oscillation (NAO) index (a proxy of interannual climatic conditions) on the rate of parasitism, and the occurrence probabilities of two parasitoid species: a PPM specialist and a generalist species. Since four pine species are stratified along the elevational gradient, we repeated all the analyses separately for lowlands (190–1300 m. a.s.l.) and uplands (1350–2000 m. a.s.l.). Results showed a decrease in both parasitism rate and probability of occurrence of the two main parasitoid species with elevation, although decline was more severe for the specialist species. The effect of elevation was more conspicuous and intense in uplands than in lowlands. Positive NAO winter values, associated with cold and dry winters, reduced the rate of parasitism and the probability of occurrence of the two main parasitoid species—but particularly for the generalist species—as elevation increases. In a context of climate warming, it is crucial to mitigate PPM elevational and latitudinal expansion. Increasing tree diversity at the PPM expansion areas may favor the establishment of parasitoids, which could contribute to synchronizing host– parasitoid interactions and minimize the risk of PPM outbreaks. |
format |
Article in Journal/Newspaper |
author |
José A. Hódar Luis Cayuela Daniel Heras Antonio J. Pérez‐Luque Lucía Torres‐Muros |
author_facet |
José A. Hódar Luis Cayuela Daniel Heras Antonio J. Pérez‐Luque Lucía Torres‐Muros |
author_sort |
José A. Hódar |
title |
Expansion of elevational range in a forest pest: Can parasitoids track their hosts? |
title_short |
Expansion of elevational range in a forest pest: Can parasitoids track their hosts? |
title_full |
Expansion of elevational range in a forest pest: Can parasitoids track their hosts? |
title_fullStr |
Expansion of elevational range in a forest pest: Can parasitoids track their hosts? |
title_full_unstemmed |
Expansion of elevational range in a forest pest: Can parasitoids track their hosts? |
title_sort |
expansion of elevational range in a forest pest: can parasitoids track their hosts? |
publisher |
Wiley |
publishDate |
2021 |
url |
https://doi.org/10.1002/ecs2.3476 https://doaj.org/article/3c140a5c56a5435d8afa6d786623dcad |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Ecosphere, Vol 12, Iss 4, Pp n/a-n/a (2021) |
op_relation |
https://doi.org/10.1002/ecs2.3476 https://doaj.org/toc/2150-8925 2150-8925 doi:10.1002/ecs2.3476 https://doaj.org/article/3c140a5c56a5435d8afa6d786623dcad |
op_doi |
https://doi.org/10.1002/ecs2.3476 |
container_title |
Ecosphere |
container_volume |
12 |
container_issue |
4 |
_version_ |
1766129958196871168 |