Download or read book Facultative Dispersal of the Apple Maggot Rhagoletis Pomonella walsh diptera Tephritidae written by Janyce M. Ryan and published by . This book was released on 1990 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Apple Maggot Rhagoletis Pomonella Walsh Diptera written by Florida. Dept. of Agriculture and Consumer Services. Division of Plant Industry and published by . This book was released on 1972 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Empirical and Mathematical Approaches to the Management of the Apple Maggot Rhagoletis Pomonella Walsh Diptera Tephritidae written by Bruce Hugh Stanley and published by . This book was released on 1988 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Symbiotic Association of Bacteria with the Apple Maggot Rhagoletis Pomonella Walsh Diptera Tephritidae written by Frank Huston and published by . This book was released on 1972 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Apple Maggot in the West written by Robert Dowell and published by UCANR Publications. This book was released on 1990 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Apple Maggot Or railroad Worm Rhagoletis Trypeta Pomonella Walsh written by Altus Lacy Quaintance and published by . This book was released on 1908 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Chilling on Diapause and Development of Washington State Apple Maggot Rhagoletis Pomonella walsh Diptera Tephritidae written by and published by . This book was released on 2014 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Parameters Affecting Emergence and Management Strategies of the Apple Maggot Fly Rhagoletis Pomonella Walsh Diptera Tephritidae written by Larry Gene Olsen and published by . This book was released on 1982 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Apple Maggot Apple Maggot Fly Rhagoletis Pomonella Walsh Insecta Diptera Tephritidae written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The apple maggot, Rhagoletis pomonella (Walsh) (also known as the "railroad worm") is an insect native to North America Originally it fed in the fruit of wild hawthorn (Crataegus spp.), but during the past 130 years it has become a primary pest of cultivated apples, especially in the northeastern United States and southeastern Canada.

Download or read book Preliminary Attempts for Mass Rearing of the Apple Maggot Rhagoletis Pomonella Walsh Diptera tephritidae written by Arare dos Santos Pedroso and published by . This book was released on 1970 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of the Biology of the Apple Maggot Rhagoletis Pomonella Together with an Investigation of Methods of Control written by James Franklin Illingworth and published by . This book was released on 1912 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Population Genetics of the Colonization of the Western United States by the Apple Maggot Rhagoletis Pomonella Walsh Diptera tephritidae written by Bruce Alan McPheron and published by . This book was released on 1987 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Comparative Effects of Chemosterilants on the Fecundity Fertility and Biology of the Apple Maggot Rhagoletis Pomonella Walsh Diptera written by Armand Louis Padula and published by . This book was released on 1970 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Phenology of the Apple Maggot Fly Rhagoletis Pomonella Diptera Tephritidae in the Southern Appalachians written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In contrast to many apple production areas, the phenology of the apple maggot, Rhagoletis pomonella (Walsh), is not well understood in North Carolina and other areas of the Southern Appalachian Mountains. Studies in western North Carolina in the 1970's reported a single flight period that occurred from mid-June to mid-September, with peak fight activity occurring in late July. More recent monitoring in Henderson County, NC, showed evidence of a bimodal emergence, with the first emergence occurring in late May to early June, and the second from mid July through August. It was not clear if this represented a bimodal emergence pattern or completion of two generations. The objectives of this study were to gain a better understanding of the phenology of the apple maggot in apple-producing regions of the Southern Appalachian Mountains, to examine the post-diapause development requirements among early and late-emerging populations in North Carolina, and to determine if phenologically and geographically distinct apple maggot populations could be differentiated genetically using the COI gene of mitochondrial DNA. Apple maggot flight was monitored in abandoned apple orchards in western North Carolina and South Carolina that represented a diversity of elevations. A distinct bimodal flight pattern was observed at all locations. A second generation was also observed at lower elevations (300-330 m) in Polk County, NC, and Spartanburg County, SC. Only one generation was evident at higher elevations (>600 m) in North Carolina. Among early and late-emerging groups, the post-diapause developmental period was shorter in the early emerging groups compared to late-emerging groups. Based on sequences of the mitochondrial gene COI, no significant differences were found between early or late-emerging groups. Furthermore, analysis of the COI gene did not detect geographic isolation among populations from North Carolina, South Carolina, Massachusetts, and West Virginia, or among populati.

Download or read book The Impeccable Timing of the Apple Maggot Fly Rhagoletis Pomonella Diptera Tephritidae and Its Implications for Ecological Speciation written by and published by . This book was released on 2015 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Speciation is the process by which life diversifies into discrete forms, and understanding its underlying mechanisms remains a primary focus for biologists. Increasingly, empirical studies are helping explain the role of ecology in generating biodiversity. Adaptive radiations are often propelled by selective fitness tradeoffs experienced by individuals that invade new habitats, resulting in reproductive isolation from ancestral conspecifics and potentially cladogenesis. Host specialist insects are among the most speciose organisms known and serve as highly useful models for studying adaptive radiations. We are just beginning to understand the pace and degree with which these insects diversify. The apple maggot, Rhagoletis pomonella, is a well-studied insect whose eastern and southern populations are models for ecological speciation. Recently (40–65 ya), the fly has invaded the Pacific Northwestern United States through human-transported apples infested with larvae. There, populations of R. pomonella have rapidly colonized two novel hawthorn hosts whose fruiting times bracket apple’s (early-season native Crataegus douglasii and introduced C. monogyna, which fruits late in the season). The recent introduction might initiate host shifts, providing opportunities to examine the pace and mechanistic means with which host races (an evolutionary stage preceding speciation) become established. Here, I demonstrate that host-associated populations at a site in southwest Washington are partially allochronically isolated from one another, and life cycles temporally match with natal host fruit ripening times in sympatry. If spatially widespread, these temporal barriers could result in reproductive isolation and possibly cladogenesis. Implications of these findings reach beyond academic import, as R. pomonella is expanding not only its host range, but its geographic range is encroaching upon central Washington, the site of a multi-billion dollar per year apple-growing industry.

Download or read book Distance of Detection of Host Tree Visual and Olfactory Stimuli by the Apple Maggot Fly Rhagoletis Pomonella Walsh Diptera Tephritidae written by Thomas A. Green and published by . This book was released on 1992 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Apple Maggot Rhagoletis Pomonella Walsh written by and published by . This book was released on 1973 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: