Are the conservation of natural enemy biodiversity and biological control compatible goals?

Straub, Cory S.; Finke, Deborah L.; Snyder, William E.

doi:10.1016/j.biocontrol.2007.05.013

Cited by 297 publications

(243 citation statements)

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“…Alternatively, parasitoid species may overlap in the host resources they use across space and time, and so lead to interspecific competition. In this situation, the addition of extra species leads to no gain in function despite an increase in diversity [6]. However, it is important to understand that these 'redundant' species may become more important as environmental conditions change.…”

Section: Introductionmentioning

confidence: 99%

Parasitoid diversity reduces the variability in pest control services across time on farms

et al. 2011

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Recent declines in biodiversity have increased interest in the link between biodiversity and the provision and sustainability of ecosystem services across space and time. We mapped the complex network of interactions between herbivores and parasitoids to examine the relationship between parasitoid species richness, functional group diversity and the provision of natural pest control services. Quantitative food webs were constructed for 10 organic and 10 conventional farms. Parasitoid species richness varied from 26 to 58 species and we found a significant positive relationship between parasitoid species richness and temporal stability in parasitism rates. Higher species richness was associated with lower variation in parasitism rate. A functional group analysis showed significantly greater parasitoid species complementarity on organic farms, with on average more species in each functional group. We simulated parasitoid removal to predict whether organic farms experienced greater robustness of parasitism in the face of local extinctions. This analysis showed no consistent differences between the organic and conventional farm pairs in terms of loss of pest control service. Finally, it was found that the different habitats that make up each farm do not contribute equally to parasitoid species diversity, and that hedgerows produced more parasitoid species, significantly more so on organic farms.

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Section: Introductionmentioning

confidence: 99%

Parasitoid diversity reduces the variability in pest control services across time on farms

et al. 2011

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“…gall-forming arthropods This contribution aimed to help in the careful choice of plant species. Multiple species that are natural enemies can improve biological control if they target the different life stages of a pest species that can be found in different parts of a given habitat (Sih et al, 1998;Straub et al, 2008). However, antagonistic interactions between natural enemy species, such as intraguild predation, can reduce biological control (Chailleux et al, 2013;Rosenheim et al, 1995;Sih et al, 1998).…”

Section: Functional Characteristics Of Interest In "Biocontrol Plants"mentioning

confidence: 99%

Introducing the term 'Biocontrol Plants' for integrated pest management

Bresch

Poncet

Desneux

2014

Sci. agric. (Piracicaba, Braz.)

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Studies of interactions between crops, additional plants, pests and benefi cial organisms already exist as well as studies of natural enemy preference, dispersal, and abundance.However, these studies focus on tri-trophic interactions from an "arthropod" point of view. We think that in order to optimize crop protection methods we need to understand the effects that plant structures have on the various arthropods and on subsequent tri-trophic interactions.Although studies and reviews describing the role of secondary plants in Integrated Pest Management (IPM) exist, to date a general term which encompasses all plants added to a cropping system with the aim of enhancing IPM strategies has yet to be formulated. Therefore, we suggest a new term, "biocontrol plants", which we defi ne as plants that are intentionally added to a crop system with the aim of enhancing crop productivity through pest attraction and/or pest regulation; a term that will promote the use of biocontrol services, and can ultimately lead to an increase in the sustainability of cropping systems.

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“…This assumption, however, has been closely scrutinized and much discussed in recent years (e.g. Müller and Brodeur 2002;Straub et al 2008).…”

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confidence: 99%

“…These studies focus instead on species diversity of enemy communities, and their contribution to pest control. The relationship between enemy species diversity and the BCS they provide has lately been much debated (Straub et al 2008). A positive relationship may be the result of facilitation (i.e.…”

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confidence: 99%

“…The absence of a relationship between enemy diversity and BCS may suggest redundancy, where different enemy species act in a similar way to suppress the pest. Finally, a negative connection may result from intraguild predation, in which natural enemies feed on each other in addition to feeding on the pest (Straub et al 2008). The direct positive effects of vegetation on pest populations, which often counteract any enhancement of enemy activity, also constitute an obstacle to drawing inferences on BCS from community level responses to landscape characteristics.…”

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confidence: 99%

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Conservation biological control and the management of biological control services: are they the same?

Coll

2009

Phytoparasitica

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interests involve the ecology and behavior of insects, and biological and integrated control of agricultural pests. He studies, in particular, interaction between herbivores and their natural enemies, ecological consequences of omnivory and antagonistic interactions between natural enemies. He co-edited a book and has authored or co-authored approximately 60 book chapters and peer-reviewed papers. He teaches four courses, has mentored some 40 graduate students and post-docs, is the academic head of the International M.Sc. Program in Plant Sciences (HUJI), and has served as a subject editor for Biological Control.

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Are the conservation of natural enemy biodiversity and biological control compatible goals?

Cited by 297 publications

References 84 publications

Parasitoid diversity reduces the variability in pest control services across time on farms

Parasitoid diversity reduces the variability in pest control services across time on farms

Introducing the term 'Biocontrol Plants' for integrated pest management

Conservation biological control and the management of biological control services: are they the same?

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