Linking spatiotemporal and demographic patterns in modulating local population outbreak of invasive forest insect
Understanding the spatial and demographic structure of local outbreaks is critical for identifying the ecological mechanisms underlying invasive forest insect dynamics. We investigated a population outbreak of Sirex noctilio within a pine plantation in Patagonia by integrating spatial analyses of in...
| Main Authors: | , , , , |
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| Format: | Artículo |
| Language: | Inglés |
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Wiley
2026
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12123/24881 https://resjournals.onlinelibrary.wiley.com/doi/10.1111/afe.70023 https://doi.org/10.1111/afe.70023 |
| _version_ | 1855487416323801088 |
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| author | Villacide, Jose Maria Liebhold, Andrew M. Von Müller, Axel Behr, Santiago Javier Corley, Juan Carlos |
| author_browse | Behr, Santiago Javier Corley, Juan Carlos Liebhold, Andrew M. Villacide, Jose Maria Von Müller, Axel |
| author_facet | Villacide, Jose Maria Liebhold, Andrew M. Von Müller, Axel Behr, Santiago Javier Corley, Juan Carlos |
| author_sort | Villacide, Jose Maria |
| collection | INTA Digital |
| description | Understanding the spatial and demographic structure of local outbreaks is critical for identifying the ecological mechanisms underlying invasive forest insect dynamics. We investigated a population outbreak of Sirex noctilio within a pine plantation in Patagonia by integrating spatial analyses of infestation patterns with quantification of oviposition behaviour and adult performance.
At the plot level, the distribution of infested trees shifted from a highly clustered pattern in previous seasons to a more spatially dispersed one of newly attacked trees Logs sampled from S. noctilio-infested trees located in the outbreak epicentre and periphery showed no significant differences in total oviposition drills or estimated egg numbers; however, single (non-reproductive) drills were more frequent in the periphery. Emergence of S. noctilio adults were higher in the periphery, though individuals were smaller, suggesting spatial variation in offspring performance within the outbreak area. These findings highlight spatial variation in oviposition behaviour and larval performance, suggesting the role of localized feedback and host availability in shaping outbreak trajectories. Our study emphasizes the importance of spatial structure in modulating demographic responses during a population outbreak, offering insights into context-dependent regulatory mechanisms of invasive forest insect populations in simplified plantation systems. |
| format | Artículo |
| id | INTA24881 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2026 |
| publishDateRange | 2026 |
| publishDateSort | 2026 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | INTA248812026-01-07T12:57:37Z Linking spatiotemporal and demographic patterns in modulating local population outbreak of invasive forest insect Villacide, Jose Maria Liebhold, Andrew M. Von Müller, Axel Behr, Santiago Javier Corley, Juan Carlos Sirex Forest Pests Vespidae Population Dynamics Body Size Oviposition Plagas Forestales Dinámica de Poblaciones Tamaño Corporal Oviposición Sirex noctilio Understanding the spatial and demographic structure of local outbreaks is critical for identifying the ecological mechanisms underlying invasive forest insect dynamics. We investigated a population outbreak of Sirex noctilio within a pine plantation in Patagonia by integrating spatial analyses of infestation patterns with quantification of oviposition behaviour and adult performance. At the plot level, the distribution of infested trees shifted from a highly clustered pattern in previous seasons to a more spatially dispersed one of newly attacked trees Logs sampled from S. noctilio-infested trees located in the outbreak epicentre and periphery showed no significant differences in total oviposition drills or estimated egg numbers; however, single (non-reproductive) drills were more frequent in the periphery. Emergence of S. noctilio adults were higher in the periphery, though individuals were smaller, suggesting spatial variation in offspring performance within the outbreak area. These findings highlight spatial variation in oviposition behaviour and larval performance, suggesting the role of localized feedback and host availability in shaping outbreak trajectories. Our study emphasizes the importance of spatial structure in modulating demographic responses during a population outbreak, offering insights into context-dependent regulatory mechanisms of invasive forest insect populations in simplified plantation systems. EEA Bariloche Fil: Villacide, José. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche (IFAB). Grupo de Ecología de Poblaciones de Insectos; Argentina Fil: Villacide, José. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche (IFAB). Grupo de Ecología de Poblaciones de Insectos; Argentina; Argentina Fil: Liebhold, Andrew. Czech University of Life Sciences. Faculty of Forestry and Wood Sciences; República Checa Fil: Liebhold, Andrew. US Forest Service. Northern Research Station; Estados Unidos Fil: Von Müller, Axel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agroforestal Esquel; Argentina Fil: Von Müller, Axel. Universidad Nacional de la Patagonia San Juan Bosco. Facultad de Ingeniería; Argentina Fil: Behr, Santiago Javier. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Chubut. Grupo de Pastizales Naturales; Argentina. Fil: Corley, Juan Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche (IFAB). Grupo de Ecología de Poblaciones de Insectos; Argentina Fil: Corley, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche (IFAB). Grupo de Ecología de Poblaciones de Insectos; Argentina; Argentina Fil: Corley, Juan Carlos. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche. Departamento de Ecología; Argentina 2026-01-05T15:14:54Z 2026-01-05T15:14:54Z 2025-11 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/24881 https://resjournals.onlinelibrary.wiley.com/doi/10.1111/afe.70023 1461-9555 1461-9563 https://doi.org/10.1111/afe.70023 eng info:eu-repograntAgreement/INTA/2023-PD-L01-I074, Bases ecológicas y epidemiológicas para el diseño de estrategias de manejo de plagas agrícolas y forestales info:eu-repograntAgreement/INTA/2023-PE-L03-I033, Gestión Sostenible de los sistemas forestales naturales y cultivados para el desarrollo de los territorios y la provisión de servicios ecosistémicos en Patagonia Andina info:eu-repo/semantics/reference/hdl/20.500.12123/22475 info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Wiley Agricultural and Forest Entomology : 1-12. (First published: 19 November 2025) |
| spellingShingle | Sirex Forest Pests Vespidae Population Dynamics Body Size Oviposition Plagas Forestales Dinámica de Poblaciones Tamaño Corporal Oviposición Sirex noctilio Villacide, Jose Maria Liebhold, Andrew M. Von Müller, Axel Behr, Santiago Javier Corley, Juan Carlos Linking spatiotemporal and demographic patterns in modulating local population outbreak of invasive forest insect |
| title | Linking spatiotemporal and demographic patterns in modulating local population outbreak of invasive forest insect |
| title_full | Linking spatiotemporal and demographic patterns in modulating local population outbreak of invasive forest insect |
| title_fullStr | Linking spatiotemporal and demographic patterns in modulating local population outbreak of invasive forest insect |
| title_full_unstemmed | Linking spatiotemporal and demographic patterns in modulating local population outbreak of invasive forest insect |
| title_short | Linking spatiotemporal and demographic patterns in modulating local population outbreak of invasive forest insect |
| title_sort | linking spatiotemporal and demographic patterns in modulating local population outbreak of invasive forest insect |
| topic | Sirex Forest Pests Vespidae Population Dynamics Body Size Oviposition Plagas Forestales Dinámica de Poblaciones Tamaño Corporal Oviposición Sirex noctilio |
| url | http://hdl.handle.net/20.500.12123/24881 https://resjournals.onlinelibrary.wiley.com/doi/10.1111/afe.70023 https://doi.org/10.1111/afe.70023 |
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