Download or read book Field Identification of the Gypsy Moth Fungus Entomophaga Maimaiga written by Ann E. Hajek and published by . This book was released on 1992 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Gypsy Moth Fungus written by Richard C. Reardon and published by . This book was released on 1998 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gypsy Moths Lymantria Dispar in the Niagara Region written by Dayle M. Belme and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The gypsy moth, Lymantria dispar, a major defoliator of broad leaf trees, was accidentally introduced into North America in 1869. Much interest has been generated regarding the potential of using natural pathogens for biological control of this insect. One of these pathogens, a highly specific fungus, Entomophaga maimaiga, was accredited with causing major epizootics in populations of gypsy moth across the north-eastern United States in 1989 and 1990 and is thought to be spreading northwards into Canada. This study examined gypsy moth population densities in the Niagara Region. The fungus, .E.. maimaiga, was artificially introduced into one site and the resulting mortality in host populations was noted over two years. The relationship between fungal mortality, host population density and occurrence of another pathogen, the nuclear polyhedrosis virus (NPV), was assessed. Gypsy moth population density was assessed by counting egg masses in 0.01 hectare (ha) study plots in six areas, namely Louth, Queenston, Niagara-on-the-Lake, Shorthills Provincial Park, Chippawa Creek and Willoughby Marsh. High variability in density was seen among sites. Willoughby Marsh and Chippawa Creek, the sites with the greatest variability, were selected for more intensive study. The pathogenicity of E. maimaiga was established in laboratory trials. Fungal-infected gypsy moth larvae were then released into experimental plots of varying host density in Willoughby Marsh in 1992. These larvae served as the inoculum to infect field larvae. Other larvae were injected with culture medium only and released into control plots also of varying host density. Later, field larvae were collected and assessed for the presence of .E.. maimaiga and NPV. A greater proportion of larvae were infected from experimental plots than from control plots indicating that the experimental augmentation had been successful. There was no relationship between host density and the proportion of infected larvae in either experimental or control plots. In 1992, 86% of larvae were positive for NPV. Presence and intensity of NPV infection was independent of fungal presence, plot type or interaction of these two factors. Sampling was carried out in the summer of 1993, the year after the introduction, to evaluate the persistence of the pathogen in the environment. Almost 50% of all larvae were infected with the fungus. There was no difference between control and experimental plots. Data collected from Willoughby Marsh indicated that there was no correlation between the proportion of larvae infected with the fungus and host population density in either experimental or control plots. About 10% of larvae collected from a nearby site, Chippawa Creek, were also positive for .E.. maimaiga suggesting that low levels of .E.. maimaiga probably occurred naturally in the area. In 1993, 9.6% of larvae were positive for NPV. Again, presence or absence of NPV infection was independent of fungal presence plot type or interaction of these two factors. In conclusion, gypsy moth population densities were highly variable between and within sites in the Niagara Region. The introduction of the pathogenic fungus, .E.. maimaiga, into Willoughby Marsh in 1992 was successful and the fungus was again evident in 1993. There was no evidence for existence of a relationship between fungal mortality and gypsy moth density or occurrence of NPV. The results from this study are discussed with respect to the use of .E.. maimaiga in gypsy moth management programs.

Download or read book The Gypsy Moth Fungus Entomophaga Maimaiga in North America written by Richard C. Reardon and published by . This book was released on 1998 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Meteorological Factors Affecting the Success of the Gypsy Moth Fungal Pathogen Entomophago Maimaiga Zygomycetes Entomophthorales in Michigan written by Nathan Wade Siegert and published by . This book was released on 2004 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings U S Department of Agriculture Interagency Gypsy Moth Research Review 1990 written by United States. Department of Agriculture. Interagency Gypsy Moth Research Review and published by . This book was released on 1991 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Natural Enemies Handbook written by Mary Louise Flint and published by UCANR Publications. This book was released on 1998 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Best-Ever Practical Guide to Biological Control. This book will help you find, identify, and use natural enemies to control pests in almost any agricultural crop, garden, or landscape. First use the handy Quick Guide feature to locate natural enemies. Then go to the main text for clear, detailed information. 180 high-quality color photographs and 140 expertly rendered drawings show hundreds of predators, parasites, and pathogens that attack pest insects, mites, nematodes, plant pathogens, and weeds. References, suppliers, and a comprehensive index make this an indispensable sourcebook for growers, pest control advisers, landscape professionals, home gardeners, and pest management teachers and students.

Download or read book Pathogens and Microbial Control of North American Forest Insect Pests written by James R. Fuxa and published by . This book was released on 1998 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings 20th U S Department of Agriculture Interagency Research Forum on Gypsy Moth and Other Invasive Species 2009 written by Katherine A. McManus and published by . This book was released on 2009 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Urban Forest Health written by and published by . This book was released on 1994 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Wildlife Habitat Statistics for Maine 1982 written by Robert T. Brooks and published by . This book was released on 1986 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gypsy Moth Management in the United States written by United States. Forest Service and published by . This book was released on 1995 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecology of Invertebrate Diseases written by Ann E. Hajek and published by John Wiley & Sons. This book was released on 2017-10-27 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: A rapidly growing interdisciplinary field, disease ecology merges key ideas from ecology, medicine, genetics, immunology, and epidemiology to study how hosts and pathogens interact in populations, communities, and entire ecosystems. Bringing together contributions from leading international experts on the ecology of diseases among invertebrate species, this book provides a comprehensive assessment of the current state of the field. Beginning with an introductory overview of general principles and methodologies, the book continues with in-depth discussions of a range of critical issues concerning invertebrate disease epidemiology, molecular biology, vectors, and pathogens. Topics covered in detail include: Methods for studying the ecology of invertebrate diseases and pathogens Invertebrate pathogen ecology and the ecology of pathogen groups Applied ecology of invertebrate pathogens Leveraging the ecology of invertebrate pathogens in microbial control Prevention and management of infectious diseases of aquatic invertebrates Ecology of Invertebrate Diseases is a necessary and long overdue addition to the world literature on this vitally important subject. This volume belongs on the reference shelves of all those involved in the environmental sciences, genetics, microbiology, marine biology, immunology, epidemiology, fisheries and wildlife science, and related disciplines.

Download or read book Proceedings of the 1990 Northeastern Recreation Research Symposium February 25 28 1990 State Parks Management and Research Institute Saratoga Springs New York written by and published by . This book was released on 1990 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Insect and Disease Conditions in the United States written by and published by . This book was released on 1993 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Field Manual of Techniques in Invertebrate Pathology written by Lawrence A. Lacey and published by Springer Science & Business Media. This book was released on 2007-09-27 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt: This field manual is designed to provide background and instruction on a broad spectrum of techniques and their use in the evaluation of entomopathogens in the field. The second edition provides updated information and includes two additional chapters and 12 new contributors. The intended audience includes researchers, graduate students, practitioners of integrated pest management (IPM), regulators and those conducting environmental impact studies of entomopathogens.

Download or read book Gypsy Moth Management in the United States Chapters 1 9 and appendixes A E written by and published by . This book was released on 1995 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: