IPS - ESTB - SEQB - Capítulos em livros
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- 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.
- Parasitoides autóctones associados a Dryocosmus kuriphilus Yasumatsu: principais espécies e taxas de parasitismoPublication . Santos, Ana Lobo; Santos, Sónia A.P.; Almeida, Joaquim; Bento, Albino
- Short-term response of the canopy arthropod community to fire in a Portuguese olive grovePublication . Barreales, David; Santos, Sónia A.P.; Capelo, Márcio; Pereira, José; Benhadi- Marín, JacintoIn the Mediterranean region, fires have been an ecosystem modeling force for centuries. Low-mobile or small sized fauna such as arthropods are strongly affected by these periodic disturbances. Arthropods represent a hyperdiverse group and are present in all the ecosystems occupying the totality of available niches. In agroecosystems, shifts on arthropod communities are of especial relevance when the natural enemies of pests are significantly affected. The aim of this work was to assess the short-term effect on the canopy arthropod community of an unintentional fire occurred in an olive grove in Cedães-Mirandela (Portugal). Samples of arboreal entomofauna were collected in the burnt olive grove by shaking olive branches as well as in an adjacent grove (used as control area). In each olive grove, samples were collected in two areas (one adjacent and one distant) relatively to the nearest shrubland. Total arthropod abundance and the most abundant groups were compared between burnt and non-burnt groves. The effect of sample position (adjacent to shrubland vs. central area) was assessed. A total of 1318 arthropods were captured. Both the total and each dominant group abundances were significantly higher in the non-burnt grove. The fire drastically reduced the abundance of arthropods in the olive tree canopy; however, the dominant groups were almost the same is the two groves. The abundance pattern was, in general, the opposite when considering the sample position, relatively to the shrubland areas. We suggest that the colonization ability of different groups of arboreal arthropods through flight can be involved in the restoration of the community after disturbance instead the presence of seminatural surrounding areas.
- PragasPublication . Santos, Sónia A.P.; Bento, Albino; Pereira, José Alberto
- La glucofagia favorece la supervivencia y afecta al comportamiento durante la selección de alimentos “no presa” en dos grupos funcionales de arañasPublication . Benhadi-Marín, Jacinto; Pereira, José Alberto; Villa, María; Sousa, José Paulo; Santos, Sónia A.P.
- 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.
- Plantas espontâneas em floração como recurso alimentar para adultos de Chrysoperla carnea s.l. no agroecossistema olivalPublication . Villa, María; Somavilla, Iana; Santos, Sónia A.P.; López-Sáez, José António; Pereira, José Alberto
- 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.
- Abundance and diversity of potential vectors of Xylella fastidiosa in four different wine regions of PortugalPublication . Rodrigues, I.; Pereira, L. F.; Villa, M.; Santos, Sónia A.P.; Baptista, P.; Pereira, J.A.
- Biodiversity and pollen feeding habits of syrphids in olive groves and surrounding landscape in Northeastern Portugal during springPublication . Villa, María; Santos, Sónia A.P.; Marrão, Rosalina; Pinheiro, Lara; López-Sáez, José António; Aguiar, Carlos; Pereira, José Alberto
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