scholarly journals Using a Generational Time-Step Model to Simulate Dynamics of Adaptation to Transgenic Corn and Crop Rotation by Western Corn Rootworm (Coleoptera: Chrysomelidae)

2005 ◽  
Vol 98 (2) ◽  
pp. 518-533 ◽  
Author(s):  
D. W. Crowder ◽  
D. W. Onstad
Keyword(s):  
Crop Rotation ◽  
Western Corn Rootworm ◽  
Corn Rootworm ◽  
Transgenic Corn ◽  
Time Step ◽  
Step Model

Analysis of the Dynamics of Adaptation to Transgenic Corn and Crop Rotation by Western Corn Rootworm (Coleoptera: Chrysomelidae) Using a Daily Time-Step Model

2005 ◽  
Vol 98 (2) ◽  
pp. 534-551 ◽  
Author(s):  
D. W. Crowder ◽  
D. W. Onstad ◽  
M. E. Gray ◽  
C.M.F. Pierce ◽  
A. G. Hager ◽  
...  
Keyword(s):  
Crop Rotation ◽  
Western Corn Rootworm ◽  
Corn Rootworm ◽  
Transgenic Corn ◽  
Time Step ◽  
Step Model ◽  
Daily Time Step ◽  
Daily Time

Western Corn Rootworm (Coleoptera: Chrysomelidae) Dispersal and Adaptation to Single-Toxin Transgenic Corn Deployed With Block or Blended Refuge

2011 ◽  
Vol 40 (4) ◽  
pp. 964-978 ◽  
Author(s):  
Zaiqi Pan ◽  
David W. Onstad ◽  
Timothy M. Nowatzki ◽  
Bruce H. Stanley ◽  
Lance J. Meinke ◽  
...  
Keyword(s):  
Western Corn Rootworm ◽  
Corn Rootworm ◽  
Transgenic Corn

Soybean Foliage Consumption Reduces Adult Western Corn Rootworm (Diabrotica virgifera virgifera)(Coleoptera: Chrysomelidae) Survival and Stimulates Flight

2021 ◽  
Author(s):  
Joseph L Spencer ◽  
Timothy R Mabry ◽  
Eli Levine ◽  
Scott A Isard
Keyword(s):  
Wind Tunnel ◽  
Crop Rotation ◽  
Diabrotica Virgifera Virgifera ◽  
Western Corn Rootworm ◽  
Egg Laying ◽  
Corn Rootworm ◽  
Diabrotica Virgifera ◽  
Egg Maturation ◽  
Behavioral Resistance ◽  
Collection Sites

Abstract Western corn rootworm, Diabrotica virgifera virgifera LeConte, biology is tied to the continuous availability of its host (corn, Zea mays L.). Annual rotation of corn with a nonhost, like soybean (Glycine max (L.) Merrill) was a reliable tactic to manage western corn rootworm. Behavioral resistance to annual crop rotation (rotation resistance) allowed some eastern U.S. Corn Belt populations to circumvent rotation by laying eggs in soybean and in cornfields. When active in soybean, rotation-resistant adults commonly consume foliage, in spite of detrimental effects on beetle survival. Rotation-resistant beetle activity in soybean is enabled by the expression of certain proteinases and an adapted gut microbiota that provide limited protection from soybean antiherbivore defenses. We investigated the effects of corn and soybean herbivory on rotation-resistant female survival and initiation of flight using mortality assays and wind tunnel flight tests. Among field-collected females tested with mortality assays, beetles from collection sites in a cornfield survived longer than those from collection sites in a soybean field. However, reduced survival due to soybean herbivory could be restored by consuming corn tissues. Field-collected beetles that fed on a soybean tissue laboratory diet or only water were more likely to fly in a wind tunnel than corn-feeding beetles. Regardless of collection site and laboratory diet, 90.5% of beetles that flew oriented their flights upwind. Diet-related changes in the probability of flight provide a proximate mechanism for interfield movement that facilitates restorative feeding and the survival of females previously engaged in soybean herbivory. Rotation-resistant western corn rootworm females feeding on soybean tissues experience reduced survival in mortality assays and display increased flight probability (which may facilitate flight back to a cornfield where consumption of host tissues improves survival potential and facilitates maturation of eggs). The consequences of soybean herbivory provide a proximal mechanism for behavioral resistance to crop rotation. Increased egg-laying probability while feeding on soybean tissues, facilitation of egg maturation while feeding on corn tissues, and interfield movement are previously documented consequences.

scholarly journals Increased survival of western corn rootworm on transgenic corn within three generations of on-plant greenhouse selection

2008 ◽  
Vol 105 (49) ◽  
pp. 19177-19182 ◽  
Author(s):  
L. N. Meihls ◽  
M. L. Higdon ◽  
B. D. Siegfried ◽  
N. J. Miller ◽  
T. W. Sappington ◽  
...  
Keyword(s):  
Western Corn Rootworm ◽  
Corn Rootworm ◽  
Transgenic Corn ◽  
Three Generations

Western Corn Rootworm (Coleoptera: Chrysomelidae) Beetle Emergence from Weedy Cry3Bb1 Rootworm-Resistant Transgenic Corn

2005 ◽  
Vol 98 (5) ◽  
pp. 1679-1684 ◽  
Author(s):  
Isaac O. Oyediran ◽  
Bruce E. Hibbard ◽  
Thomas L. Clark
Keyword(s):  
Western Corn Rootworm ◽  
Corn Rootworm ◽  
Transgenic Corn

Incidence of Western Corn Rootworm Beetles (Coleoptera: Chrysomelidae) on Corn in Virginia from 1987 to 1992

1993 ◽  
Vol 28 (1) ◽  
pp. 136-141 ◽  
Author(s):  
Roger R. Youngman ◽  
Eric R. Day
Keyword(s):  
Crop Rotation ◽  
Diabrotica Virgifera Virgifera ◽  
Western Corn Rootworm ◽  
The State ◽  
Corn Rootworm ◽  
Diabrotica Virgifera ◽  
Continuous Corn ◽  
Corn Field ◽  
Survey Results ◽  
Diabrotica Virgifera Virgifera Leconte

The discovery of western corn rootworm beetles, Diabrotica virgifera virgifera LeConte, in a southwest Virginia corn field in 1985 prompted annual surveys of corn fields in an average of 28 counties across the state from 1987 to 1992. All counties included in the annual surveys were representative of the major corn-growing regions of Virginia. Survey results indicated that western corn rootworm beetles spread rapidly throughout most of the western and central continuous corn-growing regions of the state. In the eastern and southeastern corn-growing regions of the state, where crop rotation is widely practiced, detections of western corn rootworm beetles were less common and typically involved only one to two counties per year from 1987 to 1992.

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