Influence of Atmospheric Conditions on High-Elevation Flight of Western Corn Rootworm (Coleoptera: Chrysomelidae)

Isard, Scott A.; Spencer, Joseph L.; Mabry, Timothy R.; Levine, Eli

doi:10.1603/0046-225x-33.3.650

Cited by 30 publications

(40 citation statements)

References 29 publications

(54 reference statements)

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“…Human activities may therefore be the chief means of long‐distance WCR dispersal in Europe, although north American studies have also suggested a major role for wind in the long‐distance dispersal of WCR (Onstad et al. 1999; Isard et al. 2004).…”

Section: Discussionmentioning

confidence: 99%

Stratified dispersal and increasing genetic variation during the invasion of Central Europe by the western corn rootworm,Diabrotica virgifera virgifera

Ciosi

Miller

Toepfer³

et al. 2010

Evolutionary Applications

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Invasive species provide opportunities for investigating evolutionary aspects of colonization processes, including initial foundations of populations and geographic expansion. Using microsatellite markers and historical information, we characterized the genetic patterns of the invasion of the western corn rootworm (WCR), a pest of corn crops, in its largest area of expansion in Europe: Central and South-Eastern (CSE) Europe. We found that the invaded area probably corresponds to a single expanding population resulting from a single introduction of WCR and that gene flow is geographically limited within the population. In contrast to what is expected in classical colonization processes, an increase in genetic variation was observed from the center to the edge of the outbreak. Control measures against WCR at the center of the outbreak may have decreased effective population size in this area which could explain this observed pattern of genetic variation. We also found that small remote outbreaks in southern Germany and north-eastern Italy most likely originated from long-distance dispersal events from CSE Europe. We conclude that the large European outbreak is expanding by stratified dispersal, involving both continuous diffusion and discontinuous long-distance dispersal. This latter mode of dispersal may accelerate the expansion of WCR in Europe in the future.

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Section: Discussionmentioning

confidence: 99%

Stratified dispersal and increasing genetic variation during the invasion of Central Europe by the western corn rootworm,Diabrotica virgifera virgifera

Ciosi

Miller

Toepfer³

et al. 2010

Evolutionary Applications

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show abstract

“…Although high winds or low temperatures may limit flight, under conditions otherwise conducive to flight, flight activity was not strictly dependent on the value of any particular environmental factor. Isard et al (2004) observed that the flying WCR flux at 10 m rose and fell as atmospheric conditions (measured with a nearby weather station) just above the plant canopy became more or less favourable for WCR ascent. In the lower 10 m of the atmosphere, it is likely that the flying population ascended from nearby.…”

Section: Periodicitymentioning

confidence: 98%

“…Netted from 10‐m tall scaffolding towers, dispersing WCR females are smaller, younger, and carry less‐developed oocytes than females collected within crop canopies or flying above the soybean canopy (Spencer et al , 2005). Like females nearer to the ground, they fly in the early to mid‐morning or near dusk (Isard et al , 2004). Although high winds or low temperatures may limit flight, under conditions otherwise conducive to flight, flight activity was not strictly dependent on the value of any particular environmental factor.…”

Section: Periodicitymentioning

confidence: 99%

Behaviour and ecology of the western corn rootworm (Diabrotica virgifera virgifera LeConte)

Spencer

Hibbard

Moeser

et al. 2009

Agri and Forest Entomology

Self Cite

141

146

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1 The western corn rootworm (WCR) is a historic pest with a legacy of resistance and behavioural plasticity. Its behaviour and nutritional ecology are important to rootworm management. The success of the most effective and environmentally benign rootworm management method, annual crop rotation, was based on an understanding of rootworm behaviour and host -plant relationships. Enthusiastic adoption of crop rotation, provided excellent rootworm management, but also selected for behavioural resistance to this cultural control. 2 Though well-studied, significant gaps in WCR biology remain. Understanding the topics reviewed here (mating behaviour, nutritional ecology, larval and adult movement, oviposition, alternate host use, and chemical ecology) is a starting point for adapting integrated pest management and insect resistance management (IRM) to an expanding WCR threat. A presentation of significant questions and areas in need of further study follow each topic. 3 The expansion of WCR populations into Europe exposes this pest to new environmental and regulatory conditions that may influence its behaviour and ecology.Reviewing the state of current knowledge provides a starting point of reference for researchers and pest management decision-makers in North America and Europe. 4 The trend toward increasing adoption of transgenic maize will place an increasing premium on understanding WCR behaviour. IRM plans designed to promote sustainable deployment of transgenic hybrids are grounded on assumptions about WCR movement, mating and ovipositional behaviour. Preserving the utility of new and old management options will continue to depend on a thorough understanding of WCR biology, even as the ecological circumstances and geography of WCR problems become more complex.

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“…This phenomenon probably accounts for Metcalf's (70) observation of the accelerating rate of spread of the western corn rootworm across the Corn Belt, which he understandably, but mistakenly, attributed to the coincidental development of cyclodiene resistance in the early 1960s. Rates of expansion varied tremendously across North America, ranging from 20 to 200 km/year (65), and depended in part on the direction of spread relative to prevailing winds and storm fronts that aid long-distance dispersal (35,89). Spread was slowed in areas of intense crop rotation (123), which affects establishment potential of longdistance colonizers.…”

Section: Genetics Of Invasion and Adaptationmentioning

confidence: 99%

Adaptation and Invasiveness of Western Corn Rootworm: Intensifying Research on a Worsening Pest

Gray

Sappington

Miller

et al. 2009

Annu. Rev. Entomol.

395

463

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Influence of Atmospheric Conditions on High-Elevation Flight of Western Corn Rootworm (Coleoptera: Chrysomelidae)

Cited by 30 publications

References 29 publications

Stratified dispersal and increasing genetic variation during the invasion of Central Europe by the western corn rootworm,Diabrotica virgifera virgifera

Stratified dispersal and increasing genetic variation during the invasion of Central Europe by the western corn rootworm,Diabrotica virgifera virgifera

Behaviour and ecology of the western corn rootworm (Diabrotica virgifera virgifera LeConte)

Adaptation and Invasiveness of Western Corn Rootworm: Intensifying Research on a Worsening Pest

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