Species identity dominates the relationship between predator biodiversity and herbivore suppression

Ecology
Cory S Straub, William E Snyder

Abstract

Agricultural pest suppression is an important ecosystem service that may be threatened by the loss of predator diversity. This has stimulated interest in the relationship between predator biodiversity and biological control. Multiple-predator studies have shown that predators may complement or interfere with one another, but few experiments have determined if the resulting effects on prey are caused by changes in predator abundance, identity, species richness, or some combination of these factors. We experimentally isolated the effect of predator species richness on the biological control of an important agricultural pest, the green peach aphid. We found no evidence that increasing predator species richness affects aphid biological control; overall there was no strong complementarity or interference among predator species that altered the strength of aphid suppression. Instead, our experiments revealed strong effects of predator species identity, because predators varied dramatically in their per capita consumption rates. Our results are consistent with other multiple-predator studies finding strong species-identity effects and suggest that, for the biological control of aphids, conservation strategies that directly target key ...Continue Reading

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Citations

Jan 5, 2011·Oecologia·Tadashi Takizawa, William E Snyder
Sep 1, 2007·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Carol Shennan
Aug 22, 2009·Ecology·Daniel S GrunerDonald R Strong
Sep 24, 2015·Environmental Entomology·K K Prescott, D A Andow
Apr 24, 2014·Environmental Entomology·Elizabeth Y Long, Deborah L Finke
Dec 21, 2011·Environmental Entomology·Tadashi Takizawa, William E Snyder
Sep 24, 2011·Ecological Applications : a Publication of the Ecological Society of America·Carsten ThiesTeja Tscharntke
Jul 20, 2013·Ecological Applications : a Publication of the Ecological Society of America·Daniel S KarpLuke O Frishkoff
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Aug 21, 2013·Ecology·Jocelyn E BehmAnthony R Ives
Nov 22, 2007·Ecology·Oswald J Schmitz
Sep 15, 2010·Ecology·Shawn A Steffan, William E Snyder
Dec 24, 2013·Ecology·John N GriffinBradley J Cardinale
Jul 15, 2009·Trends in Ecology & Evolution·Julia ReissGuy Woodward
Apr 1, 2015·Molecular Ecology Resources·Consuelo Pérez-SayasMónica A Hurtado
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Dec 15, 2017·Ecology and Evolution·Amanda J MeadowsWilliam E Snyder
Nov 26, 2015·Science Advances·Jonathan G Lundgren, Scott W Fausti
Jun 27, 2006·Ecology Letters·William E SnyderCory S Straub

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