Does Landscape Diversity Slow the Spread of Rotation-Resistant Western Corn Rootworm (Coleoptera: Chrysomelidae)?

Onstad, David W.; Crwoder, D. W.; Isard, Scott A.; Levine, Eli; Spencer, Joseph L.; O’Neal, Matthew E.; Ratcliffe, Susan T.; Gray, Michael E.; Bledsoe, L. W.; Fonzo, Carla Di; Eisley, J. B.; Edwards, C. R.

doi:10.1603/0046-225x-32.5.992

Cited by 56 publications

(65 citation statements)

References 18 publications

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“…Furthermore, the advantage of the host-selective wild type behavior increases as the presence of corn becomes a more reliable indicator that corn will be present the following year (i.e., continuous planting). Simulation studies suggest that the evolution and spread of this adaptation is impeded by increasing diversity of vegetation in the landscape [14,15]. A decrease in crop diversity in favor of continuously planted corn could be enough to impede spread of rotation resistance.…”

Section: Spread Of Resistance Among Existing Populationsmentioning

confidence: 99%

Role of dispersal in resistance evolution and spread

Miller

Sappington

2017

Current Opinion in Insect Science

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Gene flow via immigration affects rate of evolution of resistance to a pest management tactic, while emigration from a resistant population can spread resistance alleles spatially. Whether resistance detected across the landscape reflects ongoing de novo evolution in different hotspots or spread from a single focal population can determine the most effective mitigation strategy. Pest dispersal dynamics determine the spatio-temporal scale at which mitigation tactics must be applied to contain or reverse resistance in an area. Independent evolution of resistance in different populations appears common but not universal. Conversely, spatial spread appears to be almost inevitable. However, rate and scale of spread depends largely on dispersal dynamics and interplay with factors such as fitness costs, spatially variable selection pressure and whether resistance alleles are spreading through an established population or being carried by populations colonizing new territory. Disciplines Ecology and Evolutionary Biology | Entomology | Genetics CommentsThis article is published as Miller, Nicholas J. and Thomas W. Sappington. "Role of dispersal in resistance evolution and spread." Current opinion in insect science 21 (2017): 68-74.

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Section: Spread Of Resistance Among Existing Populationsmentioning

confidence: 99%

Role of dispersal in resistance evolution and spread

Miller

Sappington

2017

Current Opinion in Insect Science

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“…Onstad et al (1999) used computer models to predict the spread of the rotation-resistant variant and suggested that their range could expand by as much as 10 Ð30 km per year, depending on prevailing wind and storm direction. Resistance has not spread as quickly as originally predicted (Onstad et al 2003). Later models predicted that increased landscape heterogeneity, particularly in the percentage of noncorn and nonrotated soybean vegetation, would decrease the rate of expansion for rotation-resistant D. v. virgifera (Onstad et al 2003).…”

Section: Discussionmentioning

confidence: 92%

“…Resistance has not spread as quickly as originally predicted (Onstad et al 2003). Later models predicted that increased landscape heterogeneity, particularly in the percentage of noncorn and nonrotated soybean vegetation, would decrease the rate of expansion for rotation-resistant D. v. virgifera (Onstad et al 2003).…”

Section: Discussionmentioning

confidence: 92%

“…Eggs of D. v. virgifera recovered from soybean Þelds (Levine and Oloumi-Sadeghi 1996) conÞrmed that soybean Þelds were suitable oviposition sites for D. v. virgifera. Rotation resistance since has spread outward from the epicenter in east-central Illinois and simulation models using wind and storm patterns have been used to predict the future distribution of rotation resistance (Onstad et al 1999(Onstad et al , 2003.…”

mentioning

confidence: 99%

“…Oviposition by rotation-resistant D. v. virgifera is not limited to corn and soybean Þelds but also can occur in oats, alfalfa (Medicago sativa L.), and winter wheat (Rondon andGray 2004, Schroeder et al 2005). However, oviposition occurs at higher frequency in soybean Þelds because soybean is the most common crop after corn in areas affected by rotation resistance (Onstad et al 2003).…”

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Effect of Soybean Varieties on Survival and Fecundity of Western Corn Rootworm

Dunbar¹,

Gassmann²

2012

jnl. econ. entom.

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The western corn rootworm, Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae), is a major pest of corn (Zea mays L.) in North America and has evolved resistance to crop rotation by ovipositing in alternate crops such as soybeans [Glycine max (L.) Merr.]. Through experiments with plants grown in the greenhouse and the field, we tested whether soybeans with resistance to the soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), affected survival, fecundity, and consumption of soybean for D. v. virgifera. Soybean varieties tested included those types resistant to A. glycines (Rag1 and rag1/rag3) and a susceptible near isoline of the Rag1 variety. Females were provided with a diet of corn tissue for 4 d after which they were fed a diet of tissue from one of three soybean varieties for 4 d, starved for 4 d, or fed corn tissue. When fed greenhouse grown plants, strains differed significantly in survival and consumption, but consumption did not differ by variety of soybean. Diet treatment only affected fecundity; individuals fed corn continuously had greater fecundity than those individuals fed soybeans. In the experiment with plants grown in the field, leaf consumption differed among strains and individuals fed corn continuously had greater fecundity than the other treatments. Soybean varieties with Rag1 and rag1/rag3 resistance toA. glycines did not appear to affect the fitness of D. v. virgifera. Thus, planting of these A. glycines-resistant soybean varieties should not directly affect the spread of rotation-resistant D. v. virgifera. KeywordsAphis glycines, Diabrotica virgifera virgifera, host plant resistance, Rag genes, rotation resistance RightsThis article is the copyright property of the Entomological Society of America and may not be used for any commercial or other private purpose without specific written permission of the Entomological Society of America.This article is available at Iowa State University Digital Repository: http://lib.dr.iastate.edu/ent_pubs/184BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. Effect of Soybean Varieties on Survival and Fecundity of Western Corn RootwormAuthor (s)

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Crop rotations for increased soil carbon: perenniality as a guiding principle

King

Blesh

2017

Ecological Applications

165

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Abstract. More diverse crop rotations have been promoted for their potential to remediate the range of ecosystem services compromised by biologically simplified grain-based agroecosystems, including increasing soil organic carbon (SOC). We hypothesized that functional diversity offers a more predictive means of characterizing the impact of crop rotations on SOC concentrations than species diversity per se. Furthermore, we hypothesized that functional diversity can either increase or decrease SOC depending on its associated carbon (C) input to soil. We compiled a database of 27 cropping system sites and 169 cropping systems, recorded the species and functional diversity of crop rotations, SOC concentrations (g C kg/soil), nitrogen (N) fertilizer applications (kg NÁha ). We categorized crop rotations into three broad categories: grain-only rotations, grain rotations with cover crops, and grain rotations with perennial crops. We divided the grain-only rotations into two sub-categories: cereal-only rotations and those that included both cereals and a legume grain. We compared changes in SOC and C input using mean effect sizes and 95% bootstrapped confidence intervals. Cover cropped and perennial cropped rotations, relative to grain-only rotations, increased C input by 42% and 23% and SOC concentrations by 6.3% and 12.5%, respectively. Within grain-only rotations, cereal + legume grain rotations decreased total C input (À16%), root C input (À12%), and SOC (À5.3%) relative to cereal-only rotations. We found no effect of species diversity on SOC within grain-only rotations. N fertilizer rates mediated the effect of functional diversity on SOC within grain-only crop rotations: at low N fertilizer rates (≤75 kg NÁha ), the decrease in SOC with cereal + legume grain rotations was less than at high N fertilizer rates. Our results show that increasing the functional diversity of crop rotations is more likely to increase SOC concentrations if it is accompanied by an increase in C input. Functionally diverse perennial and cover cropped rotations increased both C input and SOC concentrations, potentially by exploiting niches in time that would otherwise be unproductive, that is, increasing the "perenniality" of crop rotations.

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Does Landscape Diversity Slow the Spread of Rotation-Resistant Western Corn Rootworm (Coleoptera: Chrysomelidae)?

Cited by 56 publications

References 18 publications

Role of dispersal in resistance evolution and spread

Role of dispersal in resistance evolution and spread

Effect of Soybean Varieties on Survival and Fecundity of Western Corn Rootworm

Crop rotations for increased soil carbon: perenniality as a guiding principle

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