Biochemical Factors of Resistance and Management of Colorado Potato Beetle, Leptinotarsa Decemlineata (Say), (Coleoptera:Chrysomelidae) PDF Download
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Author: Christiane N. Gouamene Lamine
Publisher:
ISBN:
Category : Colorado potato beetle
Languages : en
Pages : 178
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Author: Christiane N. Gouamene Lamine
Publisher:
ISBN:
Category : Colorado potato beetle
Languages : en
Pages : 178
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Author: David Mota-Sanchez
Publisher:
ISBN:
Category : Colorado potato beetle
Languages : en
Pages : 278
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Author: Kathleen Schnaars Uvino
Publisher:
ISBN: 9781303762789
Category :
Languages : en
Pages : 326
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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.
Author: Philippos M. Ioannidis
Publisher:
ISBN:
Category : Colorado potato beetle
Languages : en
Pages : 296
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Author: Andrei Alyokhin
Publisher: Academic Press
ISBN: 0123868955
Category : Cooking
Languages : en
Pages : 634
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Book Description
Insect Pests of Potato: Biology and Management provides a comprehensive source of up-to-date scientific information on the biology and management of insects attacking potato crops, with an international and expert cast of contributors providing its contents. This book presents a complete review of the scientific literature from the considerable research effort over the last 15 years, providing the necessary background information to the subject of studying the biology management of insect pests of potatoes, assessment of recent scientific advances, and a list of further readings. This comprehensive review will be of great benefit to a variety of scientists involved in potato research and production, as well as to those facing similar issues in other crop systems. Written by top experts in the field, this is the only publication covering the biology, ecology and management of all major potato pests Emphasizes ecological and evolutionary approaches to pest management Summarizes information from hard-to-get publications in China, India, and Russia
Author: Steven P. Mroczkiewicz
Publisher:
ISBN:
Category :
Languages : en
Pages : 310
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Author: E. Świniarski
Publisher:
ISBN:
Category : Colorado potato beetle
Languages : en
Pages : 30
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Author: S. Wardojo
Publisher:
ISBN: 9789027805683
Category : Colorado potato beetle
Languages : en
Pages : 79
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Author: Stanislav Trdan
Publisher: BoD – Books on Demand
ISBN: 9535122584
Category : Technology & Engineering
Languages : en
Pages : 452
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Book Description
This book contains 20 chapters, which are divided into 5 sections. Section 1 covers different aspects of insecticide resistance of selected economically important plant insect pests, whereas section 2 includes chapters about the importance, development and insecticide resistance management in controlling malaria vectors. Section 3 is dedicated to some general questions in insecticide resistance, while the main topic of section 4 is biochemical approaches of insecticide resistance mechanisms. Section 5 covers ecologically acceptable approaches for overcoming insecticide resistance, such are the use of mycoinsecticides, and understanding the role of some plant chemical compounds, which are important in interactions between plants, their pests and biological control agents.
Author: Jayne T. MacLean
Publisher:
ISBN:
Category : Horticultural crops
Languages : en
Pages : 102
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Book Description
