Download or read book Movement and Spatial Costs of Resistance in the Colorado Potato Beetle Leptinotarsa Decemlineata say Coleoptera Chrysomelidae written by Kathleen Schnaars Uvino and published by . This book was released on 2013 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Studies on Mechanisms of Resistance in the Wild Potato Solanum Berthaultii Hawkes to the Colorado Potato Beetle Leptinotarsa Decemlineata Say Coleoptera Chrysomelidae written by Michael Brent Dimock and published by . This book was released on 1985 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flight Initiation Behavior and Host Plant Attraction in the Colorado Potato Beetle Leptinotarsa Decemlineata Say coleoptera Chrysomelidae written by Michael Allen Caprio and published by . This book was released on 1987 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Resistance and Metabolism of Imidacloprid in Colorado Potato Beetle Leptinotarsa Decemlineata Say Coleoptera Chrysomelidae written by David Mota-Sanchez and published by . This book was released on 2002 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biochemical Factors of Resistance and Management of Colorado Potato Beetle Leptinotarsa Decemlineata Say Coleoptera Chrysomelidae written by Christiane N. Gouamene Lamine and published by . This book was released on 1994 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stability and Aspects of Resistance of Solanum Berthaultii Hawkes to Populations of the Colorado Potato Beetle Leptinotarsa Decemlineata Say Coleoptera Chrysomelidae written by Félix Humberto Franca and published by . This book was released on 1991 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetic variation in Leptinotarsa decemlineata (Say) for adaptation to Solanum berthaultii Hawkes. Selection of the Colorado potato beetle, Leptinotarsa decemlineata (Say) for adaptation to Solanum berthaultii Hakes. Resistance of Solanum berthaultii Hawkes and advanced hybrids to the Colorado potato beetle: two-year no-choice and choice tests in the field. Influence of photosynthetically active radiation (PAR) on Colorado potato beetle.
Download or read book Colorado Potato Beetle Movement in Wisconsin Potato Cropping Systems written by Deana L. Sexson and published by . This book was released on 2000 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sustainable Management of Arthropod Pests of Tomato written by Waqas Wakil and published by Academic Press. This book was released on 2017-11-19 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable Management of Arthropod Pests of Tomato provides insight into the proper and appropriate application of pesticides and the integration of alternative pest management methods. The basis of good crop management decisions is a better understanding of the crop ecosystem, including the pests, their natural enemies, and the crop itself. This book provides a global overview of the biology and management of key arthropod pests of tomatoes, including arthropod-vectored diseases. It includes information that places tomatoes in terms of global food production and food security, with each pest chapter including the predators and parasitoids that have specifically been found to have the greatest impact on reducing that particular pest. In-depth coverage of the development of resistance in tomato plants and the biotic and abiotic elicitors of resistance and detailed information about the sustainable management of tomato pests is also presented. Provides basic biological and management information for arthropod pests of tomato from a global perspective, encompassing all production types (field, protected, organic) Includes chapters on integrated management of tomato pests and specific aspects of tomato pest management, including within protected structures and in organic production Presents management systems that have been tested in the real-world by the authors of each chapter Fully illustrated throughout with line drawings and color plates that illustrate key pest and beneficial arthropods associated with tomato production around the world
Download or read book The Colorado Potato Beetle Leptinotarsa Decemlineata Say written by Frank Hurlbut Chittenden and published by . This book was released on 1907 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology of the Colorado Potato Beetle Leptinotarsa Decemlineata say on Horsenettle Solanum Carolinense L in Michigan written by Jaime Mena-Covarrubias and published by . This book was released on 1989 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Development of Insecticide resistant and Susceptible Colorado Potato Beetle Larvae Coleoptera Chrysomelidae on Different Solanaceous Hosts written by Patti Lea Rattlingourd and published by . This book was released on 1991 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Factors Relating to the Larval Growth of the Colorado Potato Beetle Leptinotarsa Decemlineata Say Coleoptera Chrysomelidae on Artificial Diets written by S. Wardojo and published by . This book was released on 1969 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Susceptibility of the Colorado Potato Beetle Leptinotarsa Decemlineata Say Coleoptera Chrysomelidae to Insecticides written by Ali Mustafa Kurghali and published by . This book was released on 1980 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Utilizing and Evaluating the Interaction Between Colorado Potato Beetle Leptinotarsa Decemlineata Say coleoptera Chrysomelidae Herbivory and Fluroxypyr Prometryn and Mesotrione Rates to Develop an Integrated Pest Management Strategy for Volunteer Potato Solanum Tuberosum L Cutleaf Nightshade Solanum Triflorum Nutt and Hairy Nightshade solanum Sarrachoides Sendtner written by Chase W. Metzger and published by . This book was released on 2005 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Population Dynamics of the Colorado Potato Beetle Leptinotarsa Decemlineata Say Coleoptera Chrysomelidae in Western Massachusetts with Particular Emphasis on Migration and Dispersal Processes written by Robert Hurley Voss and published by . This book was released on 1989 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Colonization Patterns and Diapause Ecology of Colorado Potato Beetle Leptinotarsa Decemlineata Interaction with Neonicotinoid Resistance written by and published by . This book was released on 2013 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rationale: In 2011, Wisconsin farmers grew 25.5 thousand hectares of cultivated potato worth an estimated 267 million dollars. Since 1995, systemic neonicotinoids have been used on approximately 85% of these acres to manage the Colorado potato beetle, Leptinotarsa decemlineata (Say) and other key pests. As a result of long-term reliance, neonicotinoid resistance in Colorado potato beetle has become common. In the spring of 2008 and 2009, growers reported changes in the colonization timing of Colorado potato beetle. Specifically, it was suggested that beetles were either extending or delaying their arrival times in commercial fields. Observed changes in beetle ecology typically occurred where neonicotinoid resistance had previously been documented in past seasons and may be an indication of an evolving relationship between insecticide resistance and changes in diapause patterns. A long colonization period resulted in the presence of several life stages of this insect in the crop simultaneously. Where protracted or delayed emergence occurred, many growers chose to manage these multiple life stages with high-risk, foliar applications. With increasing input costs growers may avoid proactive resistance management strategies, continuing to use generic neonicotinoid compounds paired with inexpensive, high risk foliar insecticide applications to manage resistant populations and maintain profit margins. Project Goal: To better understand the relationship between neonicotinoid use, Colorado potato beetle resistance, and environmental fate of neonicotinoids in the Central Sands agroecosystem. Objectives: I) To define the influence of previous (year) potato fields and adjacent diapause habitats on field scale Colorado potato beetle abundance. II) To use a common garden dormancy experiment to examine relationships between insecticide resistance, overwintering emergence phenology, and beetle fitness in field collected beetle populations. III) To document in-plant concentration and environmental fate of neonicotinoid insecticides when systemically applied in potato. Impact and Outcomes: An improved understanding of insecticide application methods and their effects on insect resistance management, insect ecology, and the surrounding environment will improve the long-term viability of systemic insecticides, which have become a keystone in our management program. Deliverable outcomes will inform sustainable, environmentally sound management plans for potato production systems and other specialty crops where systemic applications are commonplace.
Download or read book Evaluation and Inheritance of Resistance to Colordo Potato Beetle Leptinotarsa Decemlineata SAY in Some Wild Potato Solanum Species written by Emmanuel Olufemi Pomary and published by . This book was released on 1986 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
