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Artículo

Oviposition substrate location by the invasive woodwasp Sirex noctilio: the combined effect of chemical cues emitted by its obligate symbiont Amylostereum areolatum and different host‐tree species

Masagué, SantiagoIcon ; Fernandez, Patricia CarinaIcon ; Devescovi, FranciscoIcon ; Segura, Diego FernandoIcon ; de la Vega, Gerardo JoséIcon ; Corley, Juan CarlosIcon ; Villacide, José María; Martínez, Andrés Santiago
Fecha de publicación: 06/2023
Editorial: John Wiley & Sons Ltd
Revista: Pest Management Science
ISSN: 1526-498X
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Silvicultura

Resumen

Sirex noctilio is an invasive forest wasp that affects pines and can result in severe economic losses. The use of semiochemicals offers an opportunity to develop sensitive and specific capturing systems to mitigate negative impacts. Previous research showed that female S. noctilio would use volatiles emitted by its fungal symbiont, Amylostereum areolatum, but little is known about how these modulate behaviour when combined with pine-wood emissions. Our aim was to understand the relevance of fungal volatiles grown on artificial media and wood from two hosts trees, Pinus contorta and P. ponderosa, on behavioural and electroantennographic responses of wasp females. Because background odors can modify an insect′s response towards resource-indicating semiochemicals, we propose that the behavior towards the symbiont (resource) will be modulated by host pine emissions (background odors).Olfactometric assays showed that both host species with fungus were attractive when contrasted against air (P. contorta vs Air, ꭓ2 = 12.19, p < 0.001; P. ponderosa vs Air, ꭓ2 = 20.60, p < 0.001) and suggest a clear hierarchy in terms of female preferences towards the tested stimuli, with response highest towards the fungus grown on P. contorta (Olfactory Preference Index: 5,5). Electrophysiological analyses indicate that females detect 62 volatile compounds from the tested sources. Results indicate a strong synergy between symbiont and host semiochemicals, suggesting that the pine species could play a fundamental role in the interaction. Further understanding of the chemical basis of this, could guide the development of specific and attractive lures, in order to maximize attraction of wasps in surveillance programs.
Palabras clave: Sirex noctilio , Plagas forestales , Especies invasoras
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/250350
URL: https://onlinelibrary.wiley.com/doi/10.1002/ps.7596
DOI: http://dx.doi.org/10.1002/ps.7596
Colecciones
Articulos (IFAB)
Articulos de INSTITUTO DE INVESTIGACIONES FORESTALES Y AGROPECUARIAS BARILOCHE
Citación
Masagué, Santiago; Fernandez, Patricia Carina; Devescovi, Francisco; Segura, Diego Fernando; de la Vega, Gerardo José; et al.; Oviposition substrate location by the invasive woodwasp Sirex noctilio: the combined effect of chemical cues emitted by its obligate symbiont Amylostereum areolatum and different host‐tree species; John Wiley & Sons Ltd; Pest Management Science; 79; 10; 6-2023; 3959-3969
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