IFAB   27864
INSTITUTO DE INVESTIGACIONES FORESTALES Y AGROPECUARIAS BARILOCHE
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Chemical ecology of Sirex noctilio and its symbiotic fungus Amylostereym areolatum grown on different substrates
Autor/es:
DEVESCOVI, F; CORLEY, J.C.; MASAGUE, S; SEGURA, D; MARTINEZ, A; FERNANDEZ, P; VILLACIDE, JOSÉ M.
Lugar:
Buenos Aires
Reunión:
Congreso; 6th Congress of ALAEQ 2021; 2021
Resumen:
The woodwasp, Sirexnoctilio (Fabricius) (Hymenoptera: Siricidae), is an invasive species thathas colonized most of the regions of the world where Pinus spp is grown/cultivated. Since itsestablishment in Argentina in the 1980s, the wasp became one of the main insectpests affecting forestry industry. To date, an environmentally soundspecies-specific monitoring and control tool based on semiochemicals is lackingfor this pest. To this end, knowledge on the sensory ecology of S. noctilio, specifically in terms ofthe chemical volatiles involved in eliciting attractive responses, is muchneeded. Previous studies carried out in our laboratory have shown a strongattraction of S. noctilio females to the obligate symbiotic fungus Amylostereumareolatum. In this context, our objective is to evaluate the response of S.noctilio females to different volatile stimuli released by A. areolatum grownin different substrates: artificial agar-based culture medium and two of thepine species most widely cultivated in Patagonia (Pinus contorta and PinusPonderosa). Through 4-way olfactometric bioassays, we were able todetermine that there is a clear hierarchy in relation to the preferences of thefemales towards the different stimuli evaluated, being the semiochemicals releasedby the fungus cultivated in P. contortathe most important. GC-EAD and GC-MS studies were performed to analyze thecompounds emitted by the different sources and address the antennal response offemales. The results are discussed in the context of possible species-specificsemiochemical-based monitoring and control tools, and the directions ofproposed future research. @font-face{font-family:"Cambria Math";panose-1:2 4 5 3 5 4 6 3 2 4;mso-font-charset:0;mso-generic-font-family:roman;mso-font-pitch:variable;mso-font-signature:-536870145 1107305727 0 0 415 0;}@font-face{font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;mso-font-charset:0;mso-generic-font-family:swiss;mso-font-pitch:variable;mso-font-signature:-469750017 -1073732485 9 0 511 0;}p.MsoNormal, li.MsoNormal, div.MsoNormal{mso-style-unhide:no;mso-style-qformat:yes;mso-style-parent:"";margin-top:0cm;margin-right:0cm;margin-bottom:8.0pt;margin-left:0cm;line-height:107%;mso-pagination:widow-orphan;font-size:11.0pt;font-family:"Calibri",sans-serif;mso-ascii-font-family:Calibri;mso-ascii-theme-font:minor-latin;mso-fareast-font-family:Calibri;mso-fareast-theme-font:minor-latin;mso-hansi-font-family:Calibri;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;mso-ansi-language:EN-US;}p.Default, li.Default, div.Default{mso-style-name:Default;mso-style-unhide:no;mso-style-parent:"";margin:0cm;mso-pagination:widow-orphan;mso-layout-grid-align:none;text-autospace:none;font-size:12.0pt;font-family:"Arial",sans-serif;mso-fareast-font-family:Calibri;mso-fareast-theme-font:minor-latin;color:black;mso-ansi-language:EN-US;}.MsoChpDefault{mso-style-type:export-only;mso-default-props:yes;font-size:11.0pt;mso-ansi-font-size:11.0pt;mso-bidi-font-size:11.0pt;font-family:"Calibri",sans-serif;mso-ascii-font-family:Calibri;mso-ascii-theme-font:minor-latin;mso-fareast-font-family:Calibri;mso-fareast-theme-font:minor-latin;mso-hansi-font-family:Calibri;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;mso-ansi-language:EN-US;}.MsoPapDefault{mso-style-type:export-only;margin-bottom:8.0pt;line-height:107%;}div.WordSection1{page:WordSection1;}