Providing plant foods for natural enemies in farming systems: balancing practicalities and theory

Gurr, Geoff M.; Wratten, Stephen D.; Tylianakis, Jason M.; Kean, John M.; Keller, Matteo

doi:10.1017/cbo9780511542220.012

Cited by 48 publications

(45 citation statements)

References 83 publications

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“…1). Several studies have shown that vegetative buffers that provide ecological benefits such as nectar and pollen can improve the reproductive success of natural enemies and that this may lead to lower abundance of pest arthropods in the crop plants (Coll 2009;Gurr et al 2005;Heimpel and Jervis 2005).…”

Section: Discussionmentioning

confidence: 99%

“…It is well known that weeds affect the populations of herbivorous insects and their natural enemies by providing alternative food as well as sites for mating, hibernation and shelter (Frank and Reichhart 2004;Gurr et al 2005;Landis et al 2000;Marshall and Moonen 2002). Vegetative buffers such as weedy field margins are often recognized as having an important place in sustainable agriculture because of their role in an increasing functional biodiversity and in encouraging cyclic movements of predators between crops and the natural environment (Landis and Wratten 2002;K.Winkler, Ph.D. thesis, Wageningen Univ., 2005).…”

Section: Introductionmentioning

confidence: 99%

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Influence of weedy field margins on abundance patterns of the predatory bugs Orius spp. and their prey, the western flower thrips (Frankliniella occidentalis), on faba bean

Atakan

2010

Phytoparasitica

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The influence of weedy field strips on the abundance patterns of western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), and predatory bugs of Orius spp. (Hemiptera: Anthocoridae), on faba bean and on weeds was investigated in Adana province, Turkey, during 2005-2006. There were two treatments: in one treatment, weeds at the margins and inside the plots were regularly controlled by tillage; in the other treatment no weed control was done. Thrips and Orius were sampled by beating faba bean plants and weeds. Orius niger (Wolff) was the most abundant predatory insect species in faba bean and flowering weeds, with numbers of adults and nymphs significantly greater in plots with weedy margins than in weed-free plots. Flowering weeds did not contribute to the abundance of F. occidentalis on faba bean. Abundance of adults of Orius spp. did not coincide with the abundance of F. occidentalis on faba bean or weeds. There were significant negative associations for numbers of Orius spp. among faba bean and the weed species Lamium amplexicaule L. or Sinapis arvensis L. (P<0.05), indicating movement of Orius individuals from the weeds to faba bean during March-April. Finally, faba bean and weeds may provide some benefits to predators, such as nectar, pollen, shelter and egglaying sites rather than as sources of insect prey. Cultivation of faba bean could be useful for conservation and augmentation of beneficial insects, including Orius spp. Furthermore, field margins bearing flowering weeds such as S. arvensis and L amplexicaule should be protected against destructive management practices, because they host considerable numbers of the Orius species.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of weedy field margins on abundance patterns of the predatory bugs Orius spp. and their prey, the western flower thrips (Frankliniella occidentalis), on faba bean

Atakan

2010

Phytoparasitica

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“…Another well-known type of habitat management to conserve natural enemies is the sowing of flower strips to provide nectar and pollen as food sources for natural enemies (Pfiffner and Wyss 2004;Gurr et al 2005;Heimpel and Jervis 2005). One example where this approach has been successful is in the control of the light-brown apple moth (Epiphyas postvittana (Walker)), an invasive leafroller (Lepidoptera: Tortricidae) in New Zealand.…”

Section: Habitat Management and Biological Controlmentioning

confidence: 99%

Habitat manipulation to mitigate the impacts of invasive arthropod pests

et al. 2010

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Exotic invaders are some of the most serious insect pests of agricultural crops around the globe. Increasingly, the structure of landscape and habitat is recognized as having a major influence on both insect pests and their natural enemies.Habitat manipulation that aims at conserving natural enemies can potentially contribute to safer and more effective control of invasive pests. In this paper, we review habitat management experiments, published during the last ten years, which have aimed to improve biological control of invasive pests. We then discuss during what conditions habitat management to conserve natural enemies is likely to be effective and how the likelihood of success of such methods can be improved. We finally suggest an ecologically driven research agenda for habitat management programmes.2

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“…Non-crop habitats like forests, hedgerows, tree lines and field margins including herbaceous habitats, such as stinging nettle Urtica dioica L., are essential for the conservation of a diversity of natural enemies in agricultural landscapes that can play a role in suppressing pest populations in crops (Greig-Smith, 1948;Perrin, 1975;Marshall and Moonen, 2002;Duelli and Obrist, 2003;Frank and Reichhart, 2004;Gurr et al, 2005;Bianchi et al, 2006;Alhmedi et al, 2007Alhmedi et al, , 2009. Non-crop habitats may provide plant-derived food resources, e.g.…”

Section: Introductionmentioning

confidence: 99%

Quantitative food webs of herbivore and related beneficial community in non-crop and crop habitats

Alhmedi¹,

Haubruge²,

D’Hoedt³

et al. 2011

Biological Control

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a b s t r a c tQuantitative food webs were constructed from the data collected, using visual observation technique, from May to July in 2005 and 2006 to describe separately the trophic relationships between the community of aphids and their natural enemies of predators and parasitoids in agricultural and semi-natural habitats in Gembloux, Belgium. In the web, a total of six aphid attacked by six parasitoid and 21 predator species were recorded in this study; 50 and 33 links between aphid and natural enemy species were respectively observed in 2005 and 2006. Aphid density varied seasonally and among years, and three species of aphid were particularly common in different habitats. The ratios of the number of aphid species to the number of species of either predators or parasitoids changed also seasonally. Most communities of insect herbivores are likely to be structured by apparent competition mediated by shared natural enemies more than to be structured by resource competition. The potential of two guilds of natural enemies to contribute in structuring aphid community through indirect interactions was assessed. The potential strengths of apparent competition between hosts mediated by parasitoids and predators were assessed using quantitative parasitoid/predator overlap diagrams. Symmetrical links were uncommon, and rare species were severely influenced by the presence of common aphids with which they shared parasitoids or predators or both. The study's results suggest that (i) stinging nettle aphids, acting as potential sources of apparent competition mediated by natural enemies, may be important in these highly connected communities and can control whole-community dynamics, and (ii) stinging nettle habitats, in providing an important alternative prey for natural enemies, are likely to play a key role in conservation biological control.Crown

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Providing plant foods for natural enemies in farming systems: balancing practicalities and theory

Cited by 48 publications

References 83 publications

Influence of weedy field margins on abundance patterns of the predatory bugs Orius spp. and their prey, the western flower thrips (Frankliniella occidentalis), on faba bean

Influence of weedy field margins on abundance patterns of the predatory bugs Orius spp. and their prey, the western flower thrips (Frankliniella occidentalis), on faba bean

Habitat manipulation to mitigate the impacts of invasive arthropod pests

Quantitative food webs of herbivore and related beneficial community in non-crop and crop habitats

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