Factors affecting success of galls of Aditrochus coihuensis (Hymenoptera: Pteromalidae) = Factores que afectan el éxito de las agallas de Aditrochus coihuensis (Hymenoptera: Pteromalidae)
Galls of Aditrochus coihuensis (Hymenoptera: Pteromalidae) were collected from their host tree, the southern beech Nothofagus dombeyi, near San Carlos de Bariloche, Argentina, during the spring of 2007. Galls were carefully examined and classifi ed as successful or unsuccessful based on insect remai...
| Main Authors: | , , |
|---|---|
| Format: | Artículo |
| Language: | Inglés |
| Published: |
Sociedad Entomológica Argentina
2019
|
| Subjects: | |
| Online Access: | https://biotaxa.org/RSEA/article/view/26766 http://hdl.handle.net/20.500.12123/5278 |
| _version_ | 1855483593254502400 |
|---|---|
| author | Nilsson, Michael Corley, Juan Carlos Anderbrant, Olle |
| author_browse | Anderbrant, Olle Corley, Juan Carlos Nilsson, Michael |
| author_facet | Nilsson, Michael Corley, Juan Carlos Anderbrant, Olle |
| author_sort | Nilsson, Michael |
| collection | INTA Digital |
| description | Galls of Aditrochus coihuensis (Hymenoptera: Pteromalidae) were collected from their host tree, the southern beech Nothofagus dombeyi, near San Carlos de Bariloche, Argentina, during the spring of 2007. Galls were carefully examined and classifi ed as successful or unsuccessful based on insect remains and emergence-hole diameter. Gall properties (diameter, wall thickness, chamber diameter, wall toughness) were measured and compared between successful galls and unsuccessful (parasitized) galls. Gall diameter and wall thickness were strongly correlated and thick walls seem to function as a protection against parasitoids. Parasitoids (Torymidae) that were found within some galls had an ovipositor length shorter than wall thickness of fully developed galls. Most likely, parasitoids attack galls only during a limited time when the wall is thin enough. Wall toughness did not seem to infl uence gall success. In total 67% of the galls suffered from parasitoids. Inquilines (Curculionidae) were found within some gall walls, with preference for larger galls and for those with thicker walls. Traces of potential bird or wasp predation were also found in a few specimens. Our present fi ndings contribute original descriptive information on these galls. Overall, our results lend further support on the potential importance of natural enemies on gall evolution. |
| format | Artículo |
| id | INTA5278 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Sociedad Entomológica Argentina |
| publisherStr | Sociedad Entomológica Argentina |
| record_format | dspace |
| spelling | INTA52782019-06-07T16:56:16Z Factors affecting success of galls of Aditrochus coihuensis (Hymenoptera: Pteromalidae) = Factores que afectan el éxito de las agallas de Aditrochus coihuensis (Hymenoptera: Pteromalidae) Nilsson, Michael Corley, Juan Carlos Anderbrant, Olle Insecta Nothofagus Insectos Causantes de Agallas Plagas de Plantas Gall Causing Insects Pests of Plants Vespidae Nothofagus dombeyi Cohiue Aditrochus coihuensis Región Patagónica Galls of Aditrochus coihuensis (Hymenoptera: Pteromalidae) were collected from their host tree, the southern beech Nothofagus dombeyi, near San Carlos de Bariloche, Argentina, during the spring of 2007. Galls were carefully examined and classifi ed as successful or unsuccessful based on insect remains and emergence-hole diameter. Gall properties (diameter, wall thickness, chamber diameter, wall toughness) were measured and compared between successful galls and unsuccessful (parasitized) galls. Gall diameter and wall thickness were strongly correlated and thick walls seem to function as a protection against parasitoids. Parasitoids (Torymidae) that were found within some galls had an ovipositor length shorter than wall thickness of fully developed galls. Most likely, parasitoids attack galls only during a limited time when the wall is thin enough. Wall toughness did not seem to infl uence gall success. In total 67% of the galls suffered from parasitoids. Inquilines (Curculionidae) were found within some gall walls, with preference for larger galls and for those with thicker walls. Traces of potential bird or wasp predation were also found in a few specimens. Our present fi ndings contribute original descriptive information on these galls. Overall, our results lend further support on the potential importance of natural enemies on gall evolution. Agallas provocadas por Aditrochus coihuensis (Hymenoptera: Pteromalidae) sobre su hospedero, Nothofagus dombeyi, fueron colectadas en la vecindad de San Carlos de Bariloche, Argentina, durante la primavera de 2007. Las mismas fueron examinadas y clasificadas como exitosas o no, sobre la base de restos de insectos dentro de ellas y el diámetro del agujero de emergencia. Distintas propiedades de las agallas (diámetro, grosor y dureza de la pared y diámetro de la cámara) fueron medidas y comparadas como exitosas y no exitosas (parasitadas). El diámetro de las agallas tuvo una fuerte correlación con el grosor de la pared, variable que se asocia con la protección contra los parasitoides. Los parasitoides (Torymidae), que fueron hallados dentro de las agallas, poseen un ovipositor más corto que el grosor de las paredes en aquellas plenamente desarrolladas. Sin embargo, es posible que los parasitoides ataquen las agallas por una ventana temporal, cuando las paredes son aún delgadas. La dureza de las mismas, por su parte, no influyó sobre el éxito de las agallas. También, se hallaron inquilinos (Curculionidae) dentro de ellas, en mayor frecuencia en las de mayor tamaño y con paredes más gruesas. Finalmente, se observaron evidencias de depredación, posiblemente por aves o avispas. EEA Bariloche Fil: Nilsson, Michael. Lund University. Department of Biology; Suecia Fil: Corley, Juan Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Grupo de Ecología de Poblaciones de Insectos; Argentina Fil: Anderbrant, Olle. Lund University. Department of Biology; Suecia 2019-06-07T16:53:33Z 2019-06-07T16:53:33Z 2011-12 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://biotaxa.org/RSEA/article/view/26766 http://hdl.handle.net/20.500.12123/5278 0373-5680 1851-7471 eng info:eu-repo/semantics/openAccess 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 Sociedad Entomológica Argentina Revista de la Sociedad Entomológica Argentina 70 (3-4) : 327-345 (2011) |
| spellingShingle | Insecta Nothofagus Insectos Causantes de Agallas Plagas de Plantas Gall Causing Insects Pests of Plants Vespidae Nothofagus dombeyi Cohiue Aditrochus coihuensis Región Patagónica Nilsson, Michael Corley, Juan Carlos Anderbrant, Olle Factors affecting success of galls of Aditrochus coihuensis (Hymenoptera: Pteromalidae) = Factores que afectan el éxito de las agallas de Aditrochus coihuensis (Hymenoptera: Pteromalidae) |
| title | Factors affecting success of galls of Aditrochus coihuensis (Hymenoptera: Pteromalidae) = Factores que afectan el éxito de las agallas de Aditrochus coihuensis (Hymenoptera: Pteromalidae) |
| title_full | Factors affecting success of galls of Aditrochus coihuensis (Hymenoptera: Pteromalidae) = Factores que afectan el éxito de las agallas de Aditrochus coihuensis (Hymenoptera: Pteromalidae) |
| title_fullStr | Factors affecting success of galls of Aditrochus coihuensis (Hymenoptera: Pteromalidae) = Factores que afectan el éxito de las agallas de Aditrochus coihuensis (Hymenoptera: Pteromalidae) |
| title_full_unstemmed | Factors affecting success of galls of Aditrochus coihuensis (Hymenoptera: Pteromalidae) = Factores que afectan el éxito de las agallas de Aditrochus coihuensis (Hymenoptera: Pteromalidae) |
| title_short | Factors affecting success of galls of Aditrochus coihuensis (Hymenoptera: Pteromalidae) = Factores que afectan el éxito de las agallas de Aditrochus coihuensis (Hymenoptera: Pteromalidae) |
| title_sort | factors affecting success of galls of aditrochus coihuensis hymenoptera pteromalidae factores que afectan el exito de las agallas de aditrochus coihuensis hymenoptera pteromalidae |
| topic | Insecta Nothofagus Insectos Causantes de Agallas Plagas de Plantas Gall Causing Insects Pests of Plants Vespidae Nothofagus dombeyi Cohiue Aditrochus coihuensis Región Patagónica |
| url | https://biotaxa.org/RSEA/article/view/26766 http://hdl.handle.net/20.500.12123/5278 |
| work_keys_str_mv | AT nilssonmichael factorsaffectingsuccessofgallsofaditrochuscoihuensishymenopterapteromalidaefactoresqueafectanelexitodelasagallasdeaditrochuscoihuensishymenopterapteromalidae AT corleyjuancarlos factorsaffectingsuccessofgallsofaditrochuscoihuensishymenopterapteromalidaefactoresqueafectanelexitodelasagallasdeaditrochuscoihuensishymenopterapteromalidae AT anderbrantolle factorsaffectingsuccessofgallsofaditrochuscoihuensishymenopterapteromalidaefactoresqueafectanelexitodelasagallasdeaditrochuscoihuensishymenopterapteromalidae |