Interactions Between the Augmentatively Released Predaceous Mite<i>Galendromus occidentalis</i>(Acari: Phytoseiidae) and Naturally Occurring Generalist Predators

Colfer, Ramana G.; Rosenheim, Jay A.; Godfrey, Larry D.; Hsu, Cynthia L.

doi:10.1603/0046-225x-32.4.840

Cited by 19 publications

(8 citation statements)

References 52 publications

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“…has been reported on many occasions (Cloutier & Johnson, 1993;Colfer et al, 2003;Gillespie & Quiring, 1992;Madadi et al, 2009;Sanderson et al, 2005). When given the choice between WFT and A. swirskii on cut roses, Orius insidiosus consumed whatever arthropod was highest in abundance (Chow et al, 2010).…”

Section: Discussionmentioning

confidence: 85%

Seasonal climatic variations influence the efficacy of predatory mites used for control of western flower thrips in greenhouse ornamental crops

et al. 2014

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This research investigated seasonal climate changes within greenhouses and the impacts they have on efficacy of the predatory mites Amblyseius swirskii and Neoseiulus cucumeris. Controlled environment chamber, greenhouse small-cage, and commercial greenhouse trials were conducted to determine which biological control agent is more efficacious for control of the pest western flower thrips (WFT), (Frankliniella occidentalis) on ornamental crops.When observed under laboratory conditions, predation and oviposition were increased at higher temperatures. Photoperiod and light intensity also have an impact on predatory mites. Predation rates for both mite species were greater when subjected to short day light conditions (8 h light, 11 W/m 2 ). Climates typical of summer (higher temperature and light intensity, long day length) were most favourable in terms of predation and oviposition for A. swirskii. Neoseiulus cucumeris laid more eggs under short day as opposed to long day settings.In summer and winter greenhouse small cage trials, the performance of N.cucumeris and A. swirskii significantly reduced WFT numbers on potted chrysanthemum plants. However, in summer, A. swirskii provided significantly better thrips control than N. cucumeris. The number of adult mites recovered from plants was similar for both mite treatments in winter, while A. swirskii were present in higher numbers throughout the summer trials. Results from leaf damage assessments indicate that A. swirskii is more effective for control of heavy WFT feeding damage in both summer and winter. Results from commercial greenhouse trials yielded similar trends as those found in the summer and winter small cage trials.iii ACKNOWLEDGEMENTS

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Section: Discussionmentioning

confidence: 85%

Seasonal climatic variations influence the efficacy of predatory mites used for control of western flower thrips in greenhouse ornamental crops

et al. 2014

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“…consuming spider mites on cotton (Rosenheim, 2005). Further examples are found in the literature (Rosenheim et al, 1999(Rosenheim et al, , 1993(Rosenheim et al, , 2004Colfer et al, 2003). In many examples, the higher predator is a generalist and will consume both the intermediate predator and the consumer.…”

Section: Discussionmentioning

confidence: 99%

Biological Control Through Intraguild Predation: Case Studies in Pest Control, Invasive Species and Range Expansion

Bampfylde

Lewis

2007

Bull. Math. Biol.

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Intraguild predation (IGP), the interaction between species that eat each other and compete for shared resources, is ubiquitous in nature. We document its occurrence across a wide range of taxonomic groups and ecosystems with particular reference to non-indigenous species and agricultural pests. The consequences of IGP are complex and difficult to interpret. The purpose of this paper is to provide a modelling framework for the analysis of IGP in a spatial context. We start by considering a spatially homogeneous system and find the conditions for predator and prey to exclude each other, to coexist and for alternative stable states. Management alternatives for the control of invasive or pest species through IGP are presented for the spatially homogeneous system. We extend the model to include movement of predator and prey. In this spatial context, it is possible to switch between alternative stable steady states through local perturbations that give rise to travelling waves of extinction or control. The direction of the travelling wave depends on the details of the nonlinear intraguild interactions, but can be calculated explicitly. This spatial phenomenon suggests means by which invasions succeed or fail, and yields new methods for spatial biological control. Freshwater case studies are used to illustrate the outcomes.

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“…While the above cases exhibited increased pest suppression with increased biodiversity of natural enemies a contrasting situation occurs with the tetranychid mite complex in Californian cotton. The Mites of the genus Tetranychus could be suppressed by four major predators -Galendromus occidentalis (Nesbitt) , Frankliniella occidentalis (Pergande) , O. tristicolor , and Geocoris spp., when tested singly (Colfer et al 2003(Colfer et al , 2004 . But under fi eld conditions, population increases of the mite occurred in spite of the presence of these predators.…”

Section: Functional Signifi Cance Of Biodiversity In Annual Crops -A mentioning

confidence: 99%

Biological Control, Functional Biodiversity and Ecosystem Services in Insect Pest Management

Chitra

Katti

Padmakumari

et al. 2011

Crop Stress and Its Management: Perspectives and Strategies

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Biological control has come a long way and has been adapting to the changing needs of agricultural pest suppression. Changes in crop management practices, transgenic crops and new pesticide molecules have a profound effect on the natural pest suppression. Biocontrol like any other control technique is not without associated risks and cannot be considered as a panacea for maintaining environmental health. In order to sustain biological control there is a need to study the ecology of crop systems as a whole and design strategies based on the positive and negative interactions. Benefi ts of biodiversity are contextual and are diluted by trophic interactions which may be positive, negative or neutral. Habitat management strategies are used for enhancing the positive effects of biodiversity on pest suppression and are the basis of conservation biological control. Here we attempt to give an overview of the status of classical and introductory biological control programmes worldwide, risks that need to be addressed and the various principles of the emerging fi eld of conservation biological control which aims at harnessing the in situ biodiversity of crop ecosystems.

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Interactions Between the Augmentatively Released Predaceous MiteGalendromus occidentalis(Acari: Phytoseiidae) and Naturally Occurring Generalist Predators

Cited by 19 publications

References 52 publications

Seasonal climatic variations influence the efficacy of predatory mites used for control of western flower thrips in greenhouse ornamental crops

Seasonal climatic variations influence the efficacy of predatory mites used for control of western flower thrips in greenhouse ornamental crops

Biological Control Through Intraguild Predation: Case Studies in Pest Control, Invasive Species and Range Expansion

Biological Control, Functional Biodiversity and Ecosystem Services in Insect Pest Management

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