Potato Field Colonization by Low-Density Populations of Colorado Potato Beetle as a Function of Crop Rotation Distance

Boiteau, Gilles; Picka, Jeffrey D.; Watmough, James

doi:10.1603/0022-0493(2008)101[1575:pfcblp]2.0.co;2

Cited by 13 publications

(8 citation statements)

References 18 publications

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“…These kinds of model simulation do, however, not provide the full picture vis‐á‐vis the actual distribution (Ulrichs & Hopper, ). The annual cycle of an agricultural pest can be controlled by climate, but the abundance is regulated by land use (Cocu et al ., ; Boiteau et al ., ). Processed‐based ecosystem modelling can be used for simulating the interaction between host plant and insect pest, influenced by climate as well as other environmental factors (Strand, ; Maracchi et al ., ; Soussana et al ., ).…”

Section: Discussionmentioning

confidence: 99%

Modelling as a tool for analysing the temperature‐dependent future of the Colorado potato beetle in Europe

Jönsson

Pulatov

Linderson

et al. 2013

Global Change Biology

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A warmer climate may increase the risk of attacks by insect pests on agricultural crops, and questions on how to adapt management practice have created a need for impact models. Phenological models driven by climate data can be used for assessing the potential distribution and voltinism of different insect species, but the quality of the simulations is influenced by a range of uncertainties. In this study, we model the temperature-dependent activity and development of the Colorado potato beetle, and analyse the influence of uncertainty associated with parameterization of temperature and day length response. We found that the developmental threshold has a major impact on the simulated number of generations per year. Little is known about local adaptations and individual variations, but the use of an upper and a lower developmental threshold gave an indication on the potential variation. The day length conditions triggering diapause are known only for a few populations. We used gridded observed temperature data to estimate local adaptations, hypothesizing that cold autumns can leave a footprint in the population genetics by low survival of individuals not reaching the adult stage before winter. Our study indicated that the potential selection pressure caused by climate conditions varies between European regions. Provided that there is enough genetic variation, a local adaption at the northern distribution limit would reduce the number of unsuccessful initiations and thereby increase the potential for spreading to areas currently not infested. The simulations of the impact model were highly sensitive to biases in climate model data, i.e. systematic deviations in comparison with observed weather, highlightening the need of improved performance of regional climate models. Even a moderate temperature increase could change the voltinism of Leptinotarsa decemlineata in Europe, but knowledge on agricultural practice and strategies for countermeasures is needed to evaluate changes in risk of attacks.

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Section: Discussionmentioning

confidence: 99%

Modelling as a tool for analysing the temperature‐dependent future of the Colorado potato beetle in Europe

Jönsson

Pulatov

Linderson

et al. 2013

Global Change Biology

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“…where T max is the daily maximum soil temperature, T min is the daily minimum soil temperature, and T base is the soil temperature threshold (10ЊC) for Colorado potato beetles (Mailloux et al 1988, de Kort 1990, McMaster and Wilhelm 1997, Boiteau et al 2008). In the spring of each sample year, SDDs were calculated from soil temperatures logged at a depth of 10 cm by the UW-ExtensionÕs Automated Weather Observation Network station at the Hancock Agricultural Research Station (UW-EX 2011).…”

Section: Methodsmentioning

confidence: 99%

Effect of Insecticide Management History on Emergence Phenology and Neonicotinoid Resistance in <I>Leptinotarsa decemlineata</I> (Coleoptera: Chrysomelidae)

Huseth

Groves

2013

j econ entomol

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Emergence phenology and fitness attributes of several Colorado potato beetle, Leptinotarsa decemlineata (Say), populations were measured under field and greenhouse conditions. Anecdotal observations by producers and pest managers in many locations of the upper Midwest increasingly suggested that select populations of Colorado potato beetle were emerging over a longer period in the spring and were less sensitive to systemic neonicotinoids in cultivated potato. These changes in emergence phenology may be related to changes in systemic insecticide concentration over time. Specifically, a prolonged period of adult emergence in the spring increases the potential of low-dose chronic exposure to systemic neonicotinoid insecticides in potato. In 2010 and 2011, our objectives were twofold: 1) establish a common garden experiment to compare the emergence phenology of Colorado potato beetle populations uniquely managed with variable insecticide inputs, and 2) measure postdormancy fitness of emerged adult beetles from among these selected populations. Cumulative adult emergence was modeled with logistic regression. Results from this study found no clear evidence for direct relationships between phenology and management history or resistance. Differences in reproductive capacity, sex ratio, and body size were apparent in some instances. However, these results did not uniformly correspond to one specific form of potato pest management tested here. In this study, long-term reliance on systemic insecticides for Colorado potato beetle control did not serve as a strong predictor for variable life history for selected populations in Wisconsin.

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“…Although crop rotation is not often thought of as a resistance management strategy for this insect, any reduction in the number of resistant L. decemlineata infesting a field could be considered a net improvement over a field that was not rotated. Estimates of the distance required to rotate potato for L. decemlineata control vary considerably, ranging from 400 to 1,500 m in distance from previous potato fields (Sexson and Wyman 2005;Weisz et al 1994Weisz et al , 1996Boiteau et al 2008). Although these distance estimates differ, the general consensus among researchers is that maximizing interannual potato separation will reduce the number of postdiapause adults infesting the crop (Huseth et al 2012), thereby reducing the number of resistant L. decemlineata that can reproduce on the crop and limiting exposure of offspring to insecticides.…”

Section: Text Box 1 Cultural Control Of Resistant L Decemlineatamentioning

confidence: 99%

Managing Colorado Potato Beetle Insecticide Resistance: New Tools and Strategies for the Next Decade of Pest Control in Potato

Huseth¹,

Groves²,

Chapman³

et al. 2014

j integ pest manage

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Neonicotinoid insecticides have been the most common management tool for Colorado potato beetle, Leptinotarsa decemlineata (Say), infestations in cultivated potato for nearly 20 yr. The relative ease of applying neonicotinoids at planting coupled with inexpensive, generic neonicotinoid formulations has reduced the incentive for potato growers to transition from these products to other mode of action (MoA) groups for early-season L. decemlineata control. Continuous use of neonicotinoids has resulted in resistant L. decemlineata populations in some production areas of the eastern United States. Continued reliance on neonicotinoids will accelerate L. decemlineata resistance development and result in additional insecticide inputs to manage these populations. Resistance management recommendations for L. decemlineata have focused on rotation of insecticides within the growing season. Growers using at-plant neonicotinoids for early-season L. decemlineata control are encouraged to rotate MoAs for later generations to delay resistance development. Although this short-term insecticide rotation has likely prolonged the utility of neonicotinoid insecticides, reducing reliance on a single MoA soil application at planting will improve the longevity of newer, more reduced-risk alternatives. The objectives of this article are twofold: 1) to provide a review of the current status of L. decemlineata neonicotinoid resistance, and 2) to propose long-term resistance management strategies that arrange reduced-risk MoA groups into several, multiyear sequences that will maximize L. decemlineata control and reduce the probability for resistance development. This recommendation maintains practical and economical approaches for L. decemlineata control, but limits reliance on any single MoA group to minimize selection pressure for resistance development.

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Potato Field Colonization by Low-Density Populations of Colorado Potato Beetle as a Function of Crop Rotation Distance

Cited by 13 publications

References 18 publications

Modelling as a tool for analysing the temperature‐dependent future of the Colorado potato beetle in Europe

Modelling as a tool for analysing the temperature‐dependent future of the Colorado potato beetle in Europe

Effect of Insecticide Management History on Emergence Phenology and Neonicotinoid Resistance in <I>Leptinotarsa decemlineata</I> (Coleoptera: Chrysomelidae)

Managing Colorado Potato Beetle Insecticide Resistance: New Tools and Strategies for the Next Decade of Pest Control in Potato

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