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The Effects Of Switching Host Plants On The Performance Of The Gypsy Moth Lymantria Dispar L Lepidoptera Lymantriidae
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Book Synopsis The Effects of Switching Host Plants on the Performance of the Gypsy Moth, Lymantria Dispar (L.) (Lepidoptera: Lymantriidae) by : Jennifer Lynn Stoyenoff
Download or read book The Effects of Switching Host Plants on the Performance of the Gypsy Moth, Lymantria Dispar (L.) (Lepidoptera: Lymantriidae) written by Jennifer Lynn Stoyenoff and published by . This book was released on 1990 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Larval Food Plants on the Gypsy Moth, Lymantria Dispar L., and Implications for Its Population Dynamics by : Judith Anne Hough
Download or read book Effects of Larval Food Plants on the Gypsy Moth, Lymantria Dispar L., and Implications for Its Population Dynamics written by Judith Anne Hough and published by . This book was released on 1977 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis DIET HETEROGENEITY: EFFECTS ON GYPSY MOTH FEEDING BEHAVIOR AND GROWTH (LYMANTRIA DISPAR). by : BRIAN ANDREW STOCKHOFF
Download or read book DIET HETEROGENEITY: EFFECTS ON GYPSY MOTH FEEDING BEHAVIOR AND GROWTH (LYMANTRIA DISPAR). written by BRIAN ANDREW STOCKHOFF and published by . This book was released on 1992 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: on the insect's foraging behavior.
Book Synopsis The Effects of Two Pesticides Used to Control Gypsy Moths (Lepidoptera: Lymantriidae) on the Productivity of Periphyton by : Jesse Ward Klingebiel
Download or read book The Effects of Two Pesticides Used to Control Gypsy Moths (Lepidoptera: Lymantriidae) on the Productivity of Periphyton written by Jesse Ward Klingebiel and published by . This book was released on 1991 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two pesticides (Sevin and Bacillus thuringiensis) used to fight gypsy moth larvae were studied to determine what effects they may have on algal productivity.
Book Synopsis Alternate hosts of Blepharipa pratensis (Meigen) by : Paul A. Godwin
Download or read book Alternate hosts of Blepharipa pratensis (Meigen) written by Paul A. Godwin and published by . This book was released on 1977 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: A current tactic for biological control of the gypsy moth, Lymantria dispar Linnaeus, is to release its parasites in forests susceptible to gypsy moth damage before the gypsy moth arrives. The basic assumption in these anticipatory releases is that the parasites can find and utilize native insects as hosts in the interim. Blepharipa pratensis is being used in this way. The efficacy of such releases has not been demonstrated. The present state of our knowledge about the niche requirements of gypsy moth parasites in general, and B. pratensis in particular, does not permit an evaluation now. However, we do have sufficient information to determine the crucial point of whether B. pratensis can live and develop in particular native lepidopteran species that are potential hosts. We report here on the survival of B. pratensis in eight potential North American hosts.
Book Synopsis Evaluation of Aerially-applied Nuclear Polyhedrosis Virus for Suppression of the Gypsy Moth, Lymantria Dispar L. by : John D. Wollam
Download or read book Evaluation of Aerially-applied Nuclear Polyhedrosis Virus for Suppression of the Gypsy Moth, Lymantria Dispar L. written by John D. Wollam and published by . This book was released on 1978 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Ecology Of Nucleopolyhedrovirus Transmission In The Gypsy Moth (Lymantria Dispar) by : James Robert Reilly
Download or read book The Ecology Of Nucleopolyhedrovirus Transmission In The Gypsy Moth (Lymantria Dispar) written by James Robert Reilly and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Insect nucleopolyhedroviruses (NPVs) are among the most important pathogens that regulate insect populations. Although these pathogens have been the subject of a great deal of research, many aspects of their transmission remain poorly understood. The transmission of NPV is controlled by a complex set of interactions between host, virus, and the environment. I investigated the effects of three different factors on the transmission of LdNPV in the gypsy moth, (Lymantria dispar), using laboratory and field experiments, DNA analysis, and mathematical modeling. The three effects examined were: 1) the effect of density-dependent disease resistance, 2) the effect of vectoring by avian predators, and 3) the potential occurrence of vertical transmission of the virus. My main results are as follows: 1) The resistance of gypsy moth larvae to NPV decreased as larval density increased, perhaps due to the stress associated with high densities, and this relationship is predicted to have a stabilizing effect on population dynamics. 2) In aviary cage experiments, bird species showed differential effectiveness in spreading the virus from infected to healthy larvae on a local scale. This difference was due more to differences in prey processing behaviors among the birds than to differences in the amount of NPV or speed at which NPV passed through the bird guts. The highest level of transmission was achieved by red-eyed vireos, largely because of their strategy of beating larvae against a branch before ingestion, resulting in rupture of the larval cuticle and scattering of viral occlusion bodies. 3) We found no evidence for vertical transmission of lethal NPV infection in the gypsy moth. Although low levels of virus were detected in the tissues of adult female moths by real-time PCR, there was no organ that showed consistently positive levels of NPV. Furthermore, the putative virus from female tissues was not infectious to larvae in our studies, and therefore may represent either latent virus or non-occluded virions. Together, these results contribute significantly to our understanding of the processes governing NPV transmission in gypsy moths and are directly relevant to the host-pathogen dynamics of many other systems.
Book Synopsis Ecology and Influence of Bacteria in Gypsy Moth - Plant Interactions by :
Download or read book Ecology and Influence of Bacteria in Gypsy Moth - Plant Interactions written by and published by . This book was released on 2014 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbial symbioses are ubiquitous among insects and plants, but their roles in mediating interactions between them remain poorly understood. The manners in which bacterial symbionts of many insects are acquired, or may be influenced by plant chemical defenses are central to these relationships. Gypsy moth (Lymantria dispar L.) is a polyphagous leaf-feeding Lepidoptera. I assessed the contributions of egg-mass and foliar sources of bacteria on larval midgut communities, using culture-independent analyses. Laboratory-reared egg masses had a very low diversity of bacteria, while field-collected populations were highly diverse. Despite differences in egg mass-associated bacteria, larval midguts converged after extended feeding. Larval bacterial communities resembled those of the foliage they consumed, but also differed in the abundances of some members. This indicates various foliar-acquired bacteria respond differently to midgut conditions. To identify roles of midgut bacteria on gypsy moth performance, I used artificial diets containing phenolic glycosides, the principal chemical defense of trembling aspen (Populus tremuloides). Larvae were fed bacteria from aspen leaves, field-collected fifth-instar larvae, or mock controls. Larvae inoculated with bacteria from aspen grew larger when phenolic glycosides were included in diet, but not when they were absent. Effects were post-ingestive, as consumption was unaffected. Specific bacteria in larval midguts were differentially affected: Ralstonia decreased and Acinetobacter increased, when phenolic glycosides were added. Bacterial communities demonstrated high capabilities of degrading phenolic glycosides. Among individual members, Acinetobacter most strongly reduced their concentrations. Aspen genotype had little effect on foliar communities, despite widely differing chemical compositions. However, midguts from gypsy moth larvae feeding on trees with different chemical concentrations were strongly influenced by the ratio of phenolic glycosides to condensed tannins in foliage. The limited effects of foliar chemistry on bacterial communities, coupled with the strong effects of these chemicals on bacteria within larval midguts following ingestion, indicate that partitioning of defense chemicals in plant cell vacuoles minimizes effects on phyllosphere residents, but, feeding ruptures these barriers, causing strong interactions between foliar compounds and bacteria within midguts. Overall, these results broaden our understanding of plant-insect-microbe relationships, and identify important interactions among these members.
Book Synopsis Indirect Competition Between Gypsy Moths and Tiger Swallowtails by : Ahnya Marie Redman
Download or read book Indirect Competition Between Gypsy Moths and Tiger Swallowtails written by Ahnya Marie Redman and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nucleopolyhedrosis Virus Transmissions in the Gypsy Moth, Lymantria Dispar (Lep: Lymantriidae) by : K. S. Shields
Download or read book Nucleopolyhedrosis Virus Transmissions in the Gypsy Moth, Lymantria Dispar (Lep: Lymantriidae) written by K. S. Shields and published by . This book was released on 1984 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Redia written by and published by . This book was released on 1997 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study on Feeding Stimulants of the Gypsy Moth Larva, Porthetria Dispar (L.) (Lepidoptera:Lymantriidae) by : Yupares Permswarng
Download or read book A Study on Feeding Stimulants of the Gypsy Moth Larva, Porthetria Dispar (L.) (Lepidoptera:Lymantriidae) written by Yupares Permswarng and published by . This book was released on 1969 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Insect Outbreaks Revisited by : Pedro Barbosa
Download or read book Insect Outbreaks Revisited written by Pedro Barbosa and published by John Wiley & Sons. This book was released on 2012-06-29 with total page 709 pages. Available in PDF, EPUB and Kindle. Book excerpt: The abundance of insects can change dramatically from generation to generation; these generational changes may occur within a growing season or over a period of years. Such extraordinary density changes or "outbreaks" may be abrupt and ostensibly random, or population peaks may occur in a more or less cyclic fashion. They can be hugely destructive when the insect is a crop pest or carries diseases of humans, farm animals, or wildlife. Knowledge of these types of population dynamics and computer models that may help predict when they occur are very important. This important new book revisits a subject not thoroughly discussed in such a publication since 1988 and brings an international scale to the issue of insect outbreaks. Insect Outbreaks Revisited is intended for senior undergraduate and graduate students in ecology, population biology and entomology, as well as government and industry scientists doing research on pests, land managers, pest management personnel, extension personnel, conservation biologists and ecologists, and state, county and district foresters.
Book Synopsis Forestry Theses Accepted by Colleges and Universities in the United States by :
Download or read book Forestry Theses Accepted by Colleges and Universities in the United States written by and published by . This book was released on 1981 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanisms of Developmental Resistance to Baculovirus in Gypsy Moth (Lymantria Dispar) by : James McNeil
Download or read book Mechanisms of Developmental Resistance to Baculovirus in Gypsy Moth (Lymantria Dispar) written by James McNeil and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Utilization of Vaccinium Spp. and Gaylussacia Baccata (Ericaceae) by the Gypsy Moth (Lymantria Dispar, Lymantridae) and Effects on Plant Reproductive Success by : Sally Anne Zielinski
Download or read book Utilization of Vaccinium Spp. and Gaylussacia Baccata (Ericaceae) by the Gypsy Moth (Lymantria Dispar, Lymantridae) and Effects on Plant Reproductive Success written by Sally Anne Zielinski and published by . This book was released on 1986 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Forestry Theses Accepted by Colleges and Universities in the United States, July 1981-June 1990 by :
Download or read book Forestry Theses Accepted by Colleges and Universities in the United States, July 1981-June 1990 written by and published by . This book was released on 1994 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
