Browsing by Author "42615084-53d3-4338-ad6a-06659e648660"

Now showing items 1-9 of 9

    • Effect of prey density on intraguild interactions among foliar-and ground-foraging predators of aphids ... 
      Grez Villarroel, Audrey; Zaviezo, Tania; Mancilla, Angélica (2011)
      Among the aphidophaga guild present in alfalfa [Medicago sativa L. (Fabaceae)], coccinellids forage on aphids most of the time on the foliage and carabids on the ground. The result of their combined effect can be synergistic, ...
    • Factors determining variation in colour morph frequencies in invasive Harmonia axyridis populations 
      Honek, Alois; Brown, Peter M. J.; Martinkova, Zdenka; Skuhrovec, Jiri; Brabec, Marek; Burgio, Giovanni; Evans, Edward W.; Fournier, Marc; Grez Villarroel, Audrey; Kulfan, Jan; Lami, Francesco; Lucas, Eric; Lumbierres, Belén; Masetti, Antonio; Mogilevich, Timofej; Orlova-Bienkowskaja, Marina; Phillips, William M.; Pons, Xavier; Strobach, Jan; Viglasova, Sandra; Zach, Peter; Zaviezo, Tania (Springer, 2020)
      The Harlequin ladybird Harmonia axyridis Pallas, native to eastern Asia, is an invasive, non-native species that has recently achieved an almost worldwide distribution. A conspicuous feature of this species is colour ...
    • Foliar and ground-foraging predators of aphids associated with alfalfa crops in Chile: Are they good or bad ... 
      Grez Villarroel, Audrey; Rivera, Pamela; Zaviezo, Tania (2007)
      Carabids and coccinellids are the most abundant aphid predators in alfalfa. Depending on the amount of prey consumed, the impact of their combined effect can be additive, antagonistic, or synergistic. Laboratory trials ...
    • Harmonia axyridis in Chile: A new threat 
      Grez Villarroel, Audrey; Zaviezo, Tania; González, Guillermo; Rothmann, Sergio (Pontificia Universidad Católica de Chile, Facultad de Agronomía e Ingeniería Forestal, 2010)
      In this work, we document the presence of Harmonia axyridis in Chile, an invasive coccinellid species that has had negative effects in other regions of the world, such as: Impacts on non-target arthropods, invasions of ...
    • In the shadow of the condor: invasive Harmonia axyridis found at very high altitude in the Chilean Andes 
      Grez Villarroel, Audrey; Zaviezo, Tania; Roy, Helen E.; Brown, Peter M. J.; Segura, Bernardo (Wiley, 2017)
      1. Harmonia axyridis has invaded many regions of the world, with negative effects on local biodiversity, and thus it is of global concern for biological conservation. Recently it has invaded central Chile, one of the world's ...
    • Land use intensification differentially benefits alien over native predators in agricultural landscape mosaics 
      Grez Villarroel, Audrey; Rand, Tatyana A.; Zaviezo, Tania; Castillo Serey, Francisca (2013)
      Aim: Both anthropogenic habitat disturbance and the breadth of habitat use by alien species have been found to facilitate invasion into novel environments, and these factors have been hypothesized to be important within ...
    • Migration of coccinellids to alfalfa fields with varying adjacent vegetation in central Chile 
      Grez Villarroel, Audrey; Torres, Constanza; Zaviezo, Tania; Lavandero, Blas; Ramírez, Marcelo (Pontificia Universidad Católica de Chile, Facultad de Agronomía e Ingeniería Forestal, 2010)
      Permanent and permeable edges, where natural enemies can feed, overwinter or easily cross over, should enhance the early arrival of these predators to crops. We evaluated the abundance and species richness of coccinellids ...
    • Predators and parasitoids of the harlequin ladybird, Harmonia axyridis, in its native range and invaded areas 
      Ceryngier, Piotr; Nedved, Oldrich; Grez Villarroel, Audrey; Riddick, Eric W.; Roy, Helen E.; San Martín, Gilles; Steenberg, Tove; Vesely, Petr; Zaviezo, Tania; Zúñiga Reinoso, Álvaro; Haelewaters, Danny (Springer, 2018)
      The harlequin ladybird Harmonia axyridis (Coleoptera: Coccinellidae) has rapidly spread in several continents over the past 30 years and is considered an invasive alien species. The success of H. axyridis as an invader is ...
    • Rapid spread of Harmonia axyridis in Chile and its effects on local coccinellid biodiversity 
      Grez Villarroel, Audrey; Zaviezo, Tania; Roy, Helen E.; Brown, Peter M. J.; Bizama, Gustavo (Wiley-Blackwell, 2016)
      Aim Biological invasions are one of the major threats to biodiversity. Usually highly disturbed anthropogenic habitats favour invasion by alien species such as the coccinellid Harmonia axyridis. The spread and impact of ...