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- Local and landscape effects on the Eucalyptus weevilPublication . Ceia, Ricardo S.; Faria, Nuno; Lopes, Pedro B.; Alves, Joana; Silva, António Alves da; Valente, Carlos; Gonçalves, Catarina I.; Mata, Vanessa A.; Santos, Sónia A.P.; Azevedo-Pereira, Henrique M. V. S.; Sousa, José P.; Silva, Luís P.
- Limitação natural de pragas: um valioso serviço do ecossistema no olivalPublication . Paz, Maria Catarina; Santos, Sónia A.P.
- The use of complementary approaches for conservation biological control: carabid and staphylinid beetles as natural enemies of the olive fruit flyPublication . Albertini, Alice; Baptista, Paula; Burgio, Giovanni; Magagnoli, Serena; Marchi, Susanna; Martins, Fátima; Pereira, José Alberto; Petacchi, Ruggero; Ratti, Claudio; Santos, Sónia A.P.
- Are surrounding patches barriers for Prays oleae (Bernard) in the olive agroecosystem?Publication . Villa, María; Santos, Sónia A.P.; Pereira, José AlbertoThe increasing interest in organic products leads to a need of finding strategies for pest control free of pesticides. Conservation biological control, through habitat management, seeks to manage the environment in order to achieve pest reductions. In this context, the surrounding habitats of agroecosystems can be management in order to impede pest dispersion and for that is crucial to understand how landscape connectivity affects pest’s species. Thus, we studied the capability of Prays oleae (Bernard) to disperse through non-crop patches composed by woody and herbaceous vegetation. For that the flight activity of P. oleae was monitored in olive groves, and surrounding scrubland and herbaceous patches from the end of March to December of 2012 and 2013. Generalized Linear Models were used to analyze the abundance of P. oleae in the different patches and locations. P. oleae captures varied between years, likely because of a strong relation with the weather conditions. For the first time, landscape connectivity aspects were identified for P. oleae, being that was clearly able to disperse over scrublands and herbaceous patches. This study provides new data that contributes to the knowledge about P. oleae dynamic under adverse weather conditions and discloses new queries about the P. oleae dispersion and movement between patches.
- Eficácia do uso de repelentes no combate à vespa-das-galhas-do-castanheiro (Dryocosmus kuriphilus Yasumatsu).Publication . Santos, Ana Lobo; Barreales, D.S.; Benhadi-Marín, Jacinto; Marrão, R.; Santos, Sónia A.P.; Bento, A.
- Abundancia y diversidad de arañas (Araneae) en olivares del distrito de Beja (Portugal) en diferentes sistemas de cultivo.Publication . Barrientos, José A.; Silva, Andreína; Patanita, M. Isabel; Benhadi-Marín, Jacinto; Melic, Antonio; Santos, Sónia A.P.Durante 2011 y 2012 se estudió la diversidad de arañas en el suelo y en las copas de ocho olivares, cuatro de manejo biológico (dos de regadio y dos de secano) y cuatro de manejo no-biológico (dos con baja densidad de árboles y dos con una densidad elevada). Se capturaron en total 5454 arañas, de las que 1611 corresponden a olivares biológicos de regadío, 1191 a olivares biológicos de secano, 1175 a olivares intensivos de baja densidad y 1477 a olivares intensivos de alta densidad. En la muestra están representadas 31 familias y 127 especies. Se analizan los resultados desde una perspectiva faunística, destacando la presencia de algunas especies, bien por ser novedades para la fauna ibérica, bien por serlo para el distrito de Beja (Portugal). En función del planteamiento metodológico, se analizan las diferencias que muestran entre sí los diferentes sistemas de cultivo. Este análisis se realiza a través de parámetros ecológicos como la abundancia de individuos y la riqueza de especies. Se destacan las diferencias entre la fauna que habita las copas y la que explota los recursos del suelo.
- Spatial variability of the spider community in the olive grove agroecosystem in Trás-os- Montes (Portugal)Publication . Benhadi-Marín, Jacinto; Pereira, José Alberto; Sousa, José Paulo; Santos, Sónia A.P.
- Parasitoides autóctones associados a Dryocosmus kuriphilus Yasumatsu: principais espécies e taxas de parasitismoPublication . Santos, Ana Lobo; Santos, Sónia A.P.; Almeida, Joaquim; Bento, Albino
- Survival of Psyttalia concolor: Do flowers make the difference?Publication . Pinheiro, Lara A.; Pereira, José Alberto; Medina, Pilar; Santos, Sónia A.P.In sustainable olive groves, the biological control of the olive fruit fly Bactrocera oleae (Rossi) (Diptera: Tephritidae) should be achieved by maximizing the action of its natural enemies. In this work, we are focused on Psyttalia concolor (Szépligeti) (Hymenoptera: Braconidae), a synovigenic koinobiont larval-pupal endoparasitoid of many Tephritidae that has been released in several Mediterranean and Californian (USA) olive-groves against B. oleae reaching different levels of success. In this context, the diversification of non-crop plants within and around olives groves is an effective strategy to support the population of this parasitoid. Plants provide nutritional supplements (pollen and/or nectar) for maintenance, survival and egg maturation but also shelter and alternative hosts. In this study, ten flowering non-crop plants that naturally occur in olive groves, distributed throughout six different families: Apiaceae (Daucus carota L. and Foeniculum vulgare L.); Asteraceae (Bellis perennis L.; Calendula arvensis L.; Crepis vesicaria L.; Dittrichia viscosa (L.) Greuter); Brassicaceae (Brassica barrelieri (L.) Janka); Geraniaceae (Geranium molle L.) Malvaceae (Malva sylvestris L.) and Plantaginaceae (Veronica persica Poir) were tested in order to identify flowers with capacity to increase survival of P. concolor. Parasitoids exposed to flowers increased their survival to, on average, three to five days, except for M. sylvestris, V. persica and F. vulgare that significantly increased longevity of females and males of P.concolor. Interestingly, for males, all Asteraceae species tested improved their longevity, when compared to females. These findings suggest that species such as M. sylvestris could be a suitable species for establishing in olive groves.
- Diversidade funcional de aranhas epígeas no agroecossistema olival em Trás-os-Montes (Portugal): estudo comparativo entre a área de cultura e a área seminatural adjacentePublication . Kubiak, Ketrin Lorhayne; Benhadi-Marín, Jacinto; Tessaro, Dinéia; Santos, Sónia A.P.; Pereira, José Alberto