Integrating Biological Control into Conservation Practice

Integrating Biological Control into Conservation Practice
Author: Roy van Driesche
Publisher: John Wiley & Sons
Total Pages: 369
Release: 2016-08-01
Genre: Science
ISBN: 1118392590

Invasive species have a critical and growing effect upon natural areas. They can modify, degrade, or destroy wildland ecosystem structure and function, and reduce native biodiversity. Landscape-level solutions are needed to address these problems. Conservation biologists seek to limit such damage and restore ecosystems using a variety of approaches. One such approach is biological control: the deliberate importation and establishment of specialized natural enemies, which can address invasive species problems and which should be considered as a possible component of restoration. Biological control can be an effective tool against many invasive insects and plants but it has rarely been successfully employed against other groups. Safety is of paramount concern and requires that the natural enemies used be specialized and that targeted pests be drivers of ecological degradation. While modern approaches allow species to be selected with a high level of security, some risks do remain. However, as in all species introductions, these should be viewed in the context of the risk of failing to reduce the impact of the invasive species. This unique book identifies the balance among these factors to show how biological control can be integrated into ecosystem restoration as practiced by conservation biologists. Jointly developed by conservation biologists and biological control scientists, it contains chapters on matching tools to management goals; tools in action; measuring and evaluating ecological outcomes of biological control introductions; managing conflict over biological control; and includes case studies as well as an ethical framework for integrating biological control and conservation practice. Integrating Biological Control into Conservation Practice is suitable for graduate courses in invasive species management and biological control, as well as for research scientists in government and non-profit conservation organizations.

Evaluation of Rose Germplasm for Resistance to Rose Rosette Disease, and Studies of Disease Transmission and Vector Management

Evaluation of Rose Germplasm for Resistance to Rose Rosette Disease, and Studies of Disease Transmission and Vector Management
Author: Danielle N. Novick
Publisher:
Total Pages: 73
Release: 2018
Genre:
ISBN: 9780355757323

Rose rosette disease (RRD) is a lethal disease of roses (Rosa spp.) caused by Rose rosette emaravirus (RRV) and vectored by the eriophyid mite Phyllocoptes fructiphilus. It is one of the most devastating diseases of landscape roses, producing aesthetically disfiguring symptoms within months and eventually killing the plant. Unfortunately, there is no known resistance among commercial rose cultivars and the few rose species that have demonstrated resistance are not ideal candidates for introgression of resistance genes into commercially viable cultivars. This thesis details three studies relating to the management of RRD. The first is a resistance trial intended to identify rose genotypes that merit consideration as candidates in a breeding scheme for resistance to RRD. A total of 216 genotypes are being screened in an ongoing field trial at the University of Delaware in Newark, DE. In addition to high natural disease pressure, the field has received multiple augmentations since its establishment in May 2015. Augmentation consisted of using twist ties to affix symptomatic shoots of RRD-infected Rosa multiflora to actively growing shoot tips of target roses. The vector preferentially feeds on symptomatic tissue, so augmentation artificially enhanced vector populations. Any roses that developed symptoms were subsequently tested by endpoint RT-PCR to confirm the presence of RRV. Thus far 94 genotypes have been verified as susceptible to RRD. The study will continue through 2018 and any roses remaining symptom-free will be assayed to confirm the absence of viral replication. The second and third studies in this thesis investigate (i) mechanical and graft transmission of RRV and (ii) the use of predatory mites as a biological control of the vector, P. fructiphilus.

Biological Control

Biological Control
Author: George E. Heimpel
Publisher: Cambridge University Press
Total Pages: 393
Release: 2017-04-03
Genre: Science
ISBN: 110810746X

Biological control is the suppression of populations of pests and weeds by living organisms. These organisms can provide important protection from invasive species and protect our environment by reducing the need for pesticides. However, they also pose possible environmental risks, so biological control interventions must be undertaken with great care. This book enhances our understanding of biological control interactions by combining theory and practical application. Using a combination of historical analyses, theoretical models and case studies, with explicit links to invasion biology, the authors cover biological control of insects, weeds, plant pathogens and vertebrate animals. The book reflects increasing recognition of risks over the past 20 years, and incorporates the latest technological advances and theoretical developments. It is ideal for researchers and students of biological control and invasion biology.

Rose Rosette

Rose Rosette
Author: James W. Amrine
Publisher:
Total Pages: 4
Release: 1988
Genre: Roses
ISBN:

Eriophyoid Mites

Eriophyoid Mites
Author: E.E. Lindquist
Publisher: Elsevier
Total Pages: 823
Release: 1996-07-03
Genre: Science
ISBN: 0080531237

This book is a timely compilation of synthesized information on behaviourally fascinating and economically important mites.The book gives much attention to fundamental aspects of eriophyoid anatomy, behaviour, ecology and even systematics, as bases for understanding the ways of life of eriophyoid mites and their effects on host plants; in turn, this will lead to developing the most appropriate means of regulating mites as detrimental or beneficial organisms. It presents new views intended to stimulate interest in eriophyoids and their enemies, and it points to areas where further research is needed. This book is intended for extension workers, experts of acarology and plant protection as well as students, teachers and researchers. It stimulates readers to critically test the view presented and aimes ultimately toward environmentally safe, sustainable and economically efficient means of regulating detrimental and beneficial eriophyoid mites.