Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Detection, Documentation, and Spatial Analysis of Resistance in Colorado Potato Beetle Using Bioassay and GIS Technology
Author: A Bibliography on the Application of GIScience and GI Technology to Disease and Public Health Problems
Author: Crop Pest and Disease Management
Author: D. PrasadPublisher:
ISBN:
Category : Agricultural pests
Languages : en
Pages : 486
Book Description
In Indian context.
Movement and Spatial Costs of Resistance in the Colorado Potato Beetle, Leptinotarsa Decemlineata (say), Coleoptera: Chrysomelidae
Author: Kathleen Schnaars UvinoPublisher:
ISBN: 9781303762789
Category :
Languages : en
Pages : 326
Book Description
The Colorado potato beetle, Leptinotarsa decemlineata is infamous for its' ability to develop resistance to insecticides and remains the most important insect defoliator of potatoes today. Long Island populations of the Colorado potato beetle have been at the forefront of developing resistance to every newly developed insecticide. Managing the evolution of resistance requires cultural as well as chemical means. Cultural efforts include field rotation, crop rotation, chemical rotation as well as refugia. Movement plays an integral part of both, the cultural schemes intended to thwart resistance evolution and the life history traits of the Colorado potato beetle. The use of refuges and crop rotation are often promoted to supplement the use of chemical pesticides in an effort to control crop pests. Refuges are untreated areas adjacent to treated crops, where susceptible genes can survive. The efficacy of refuges depends on movement between treated and untreated areas. Differences in movement between resistant and susceptible beetles can play a big role in the success of the refuge or rotation plan. Crop rotation can reduce the amount of insecticide used through dosage levels or frequency of application and slows insects' resistance evolution. Resistance to insecticides often has fitness costs associated with that resistance. I hypothesized that resistance to the insecticide Imidacloprid is correlated with reduced movement capability in Colorado potato beetles, Leptinotarsa decemlineata (Say) (henceforth potato beetles), the primary insect defoliator of potato plants. I examined whether migratory ability or flight propensity have a cost of resistance to imidacloprid in Colorado potato beetles, Leptinotarsa decemlineata (Say) by examining LD50's of flying emergers and walking emergers in the spring. Imidacloprid is the most widely used and in some cases the only effective insecticide for Colorado potato beetle control and there is currently a wide range of variation in resistance. In the spring overwintering potato beetle adults halt diapause and emerge from overwintering sites. For the purposes of this work I will use the definition of diapause presented by Tauber et al (1986): "a neurohormonally mediated, dynamic state of minimal activity that occurs during a genetically determined stage(s) of metamorphosis, usually in response to environmental stimuli that precede unfavorable conditions." Diapause in the Colorado potato beetle begins before the harsh conditions set in (loss of host and cold temperatures). It is an important strategy employed by many temperate zone insects for overwintering. Upon emergence from the overwintering site they emigrate to colonize local and distant fields. Emergence from diapause therefore offers an opportunity to sample genetically diverse groups of beetles. My results indicate that emerging flyers have a higher level of resistance than emerging walkers from overwintering sites. I also examined populations that were under intense selection pressure from one chemical, Spinosad, and largely isolated from other fields or populations. Spinosad is produced by a soil dwelling bacterium called Saccharopolyspora spinosa and it kills by ingestion. Spinosad is currently the only approved chemical available to Organic farmers on Long Island. These results indicate complete failure of Spinosad on that population but less resistance on distant populations and less resistance on populations from conventionally managed fields, all in Suffolk County, Long Island. Additionally early spring colonists of rotated and `non-rotated' fields were evaluated for resistance levels for 3 years. For two of the three years, colonists on long distance rotated fields had high LD50. Assuming long distance colonization is more likely dependent on flight, this is consistent with my results that emerging flyers have a higher LD50 than emerging walkers.
The Colorado Beetle
Author: Charles Valentine RileyPublisher:
ISBN:
Category : Colorado potato beetle
Languages : en
Pages : 138
Book Description
Detection of Mutations in Colorado Potato Beetle
Author: Jessica Bridget DunnPublisher:
ISBN:
Category : Acetylcholinesterase
Languages : en
Pages : 186
Book Description
Some Insects Injurious to Truck Crops
Author: Charles Holcomb PopenoePublisher:
ISBN:
Category : Colorado potato beetle
Languages : en
Pages : 16
Book Description
Potato Pests
Author: Charles Valentine RileyPublisher: Nabu Press
ISBN: 9781293568446
Category :
Languages : en
Pages : 114
Book Description
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ Potato Pests: Being An Illustrated Account Of The Colorado Potato-beetle And The Other Insect Foes Of The Potato In North America. With Suggestions For Their Repression And Methods For Their Destruction Charles Valentine Riley Orange Judd company, 1876 Cooking; Specific Ingredients; Vegetables; Colorado potato beetle; Cooking / Specific Ingredients / Vegetables; Insect pests; Potatoes; Technology & Engineering / Pest Control
Potato Pests
Author: Charles Valentine RileyPublisher:
ISBN:
Category : Colorado potato beetle
Languages : en
Pages : 116
Book Description
Author: Ned Mims French