Biological Control Agents

International Symposia on Biological
Control of Weeds


Volume VI - 1984



PageTitle
3Biocontrol of weeds: Bureaucrats, botanists, beekeepers, and other bottlenecks
13Ecological theory and choice of biological control agents
27Consequences of species introductions and removals on ecosystem function - Implications for applies ecology
57Depression in ragwort (Senecio jacobaea) abundance following introduction of Tyria jacobaeae and Longitarsus jacobaeae on the central coast of Oregon
65The Silwood International Project on the biological control of weeds
69The biological control of Cactaceae: Success ratings and the contribution of individual agent species
77How many insect species are necessary for successful biocontrol of weeds?
83Egg predation by ants as a partial explanation of the difference in performance of Cactoblastis cactorum on cactus weeds in south Africa and Australia
89Plant architecture and how biological control agents affect the dynamics of weeds
103The search for effective biological control agents in Europe 1. Diffuse and Spotted Knapweed
121Seed dispersal and the spread of weeds
127Climatic influences on weeds and their herbivores: Biological control of St. John's wort in British Columbia
135Factors affecting the economic feasibility of the biological control of weeds
145Bringing the cost benefit analysis of biological control of Chondrilla juncea up to date
153Field applications of biological control - Implementing the research
159Narrow-leaved Hawk's-beard (Crepis tectorum) - Its suitability as a target weed for biological control
167Prospects for biological control of velvetleaf (Abutilon theophrasti)
179Organisms as taxonomists or the contribution of vascular plant taxonomy and biosystemics to biological control (ABSTRACT ONLY)
181Ethological and genetic differences among three biotypes of Rynocyllus conicus (Coleoptera: Curculionidae) introduced into North America for the biological control of Asteraceous thistles
191Rates of change in introduced organisms
203Conflicting interest and biological control of weeds
227Chemical, biological or natural control of Eurasian watermilfoil: A study in biopolitics
235Interaction of Chrysolina quadrigemina and Hypericum spp. in California
241Conflict of interest in CIBC biological control of weeds programs
249Echium plantagineum: Catalyst for conflict and change in Australia
293Echium plantagineum in Australia: Effects of a major conflict of interest
301Conflicts of interest over beneficial and undesirable aspects of Mesquite (Prosopis spp.) in the United States as related to biological control
341Biological control of blackberries: Resolving a conflict in Australia
351Conflicts in the use of plant pathogens as biocontrol agents for weeds
359Tactics for evading conflicts in the biological control of South African weeds
365Native plant considerations in the biological control of leafy spurge
391Conflict of interest in biological control of weeds in New Zealand
399Conflicts of interest in the use of grass carp
407Insects and thistle heads: Resource utilization and guild structure
417Evaluating Rhinocyllus conicus (Coleoptera: Curculionidae) on Silybum marianum (Compositae) in Texas
423Biological control of spotted knapweed (Centaurea maculosa) - Host range of Puccinia centaureae (ABSTRACT ONLY)
425Stress inflicted by organisms on Canada thistle
433Biological control of musk thistle by Rhinocyllus conicus (Coleoptera: Curculionidae) in Virginia from 1969 to 1980
439Period of maximum host stress during development of galls of Urophora cardui (Diptera: Tephritidae) on Canada thistle (Cirsium arvense)
445Effect of duration of low temperature exposure on post-diapause development of overwintering Urophora affinis and U. quadrifasciata (ABSTRACT ONLY)
447Reaction of safflower cultivars to Puccinia jaceae, a potential biocontrol agent for diffuse knapweed
453Density and survival of Urophora stylata (Diptera: Tephritidae) on Cirsium vulgare (Compositae) in relation to flower head and gall size
479Seed loss caused by flower head inhabiting insects of lesser burdock (Arctium minus)
487The potential for biological control of the submersed aquatic weed, Hydrilla verticillata (ABSTRACT ONLY)
489Evaluation of grass carp variants in southern California (ABSTRACT ONLY)
491Biological control of water hyacinth on the White Nile, Sudan
497Flight muscle and egg development in waterhyacinth weevils
511Leaf life tables: A viable method for assessing sublethal effects of herbivory on waterhyacinth shoots
525The impact of Neochetina eichhorniae (Coleoptera: Curculionidae) on waterhyacinth in Louisiana
537The present status of grass carp (Ctenopharyngodon idella) for the control of aquatic weeds in England and Wales
543A summary of research into biological control of salvinia in Australia
551Control or no control: A comparison of the feeding strategies of two salvinia weevils
557Use of the Chinese grass carp, Ctenopharyngodon idella, in the control of the submerged water weed Potamogeton pectinatus in an inland lake in the Transvaal, South Africa
567Towards biological control of Salvinia in Papua New Guinea
577Host specificity of plant pathogens in biological weed control
587Damage to Senecio jacobaea by the rust fungus Puccinia expansa
593Biological control of Carduus pycnocephalus with Alternaria spp.
601Evaluation of plant pathogens in Europe for the biological control of introduced weed species in North America (ABSTRACT ONLY)
603Susceptibility of Cynara scolymus (Artichoke) to Puccinia carduorum observed under greenhouse conditions
609Occurrence and spread of Phragmidium violaceum on blackberry (Rubus fruticosus) in Victoria, Australia
613Occurrence and identification of some weed diseases and their consideration for biological weed control
617Prospects for biological control of Heliotropium europaeum by fungal pathogens
625Search in Greece and Turkey for Puccinia chondrillina strains suitable to Australian forms of skeleton weed
633Biocontrol of leafy spurge with pathogenic fungi (ABSTRACT ONLY)
635Biological control of Cannabis sativa
643A proposal for a standardized scale of attack and its application to biocontrol agents of weeds in laboratory screening tests
651Colletotrichum coccodes, a mycoherbicide for velvetleaf (ABSTRACT ONLY)
653Host range of the haplontic phase of Uromyces rumicis
661Biological control of hamakua pa-makani with Cercosporella sp. in Hawaii
673The role of disease in removal of weed species from developing forest stands
677Biological control of milk weed (Euphorbia heterophylla) with pathogenic fungi
685Transfer of cinnabar moth, Tyria jacobaeae, in eastern Canada for control of tansy ragwort, Senecio jacobaea
691A survey to evaluate the long-term relationship between Chrysolina quadrigemina and its host-weed, St. John's wort, in southeastern Australia
709Host-specificity studies of the Argentine weevil, Heilipodus ventralis, for the biological control of snakeweeds (Gutierrezia spp.) in the U.S.
721Biology and impact of Trichobaris texana (Coleoptera: Curculionidae) on silverleaf nightshade, Solanum elaeagnifolium in central Texas
735Re-evaluation of the biological control program for Heliotropium europaeum in Australia
743Effect of the gall midge, Zeuxidiplosis giardi (Diptera: Cecidomyiidae), on seedlings of St. John's wort, Hypericum perforatum (Clusiaceae)
749Suppression of reproduction of woody weeds using insects which destroy flowers or seeds
757The weed Sesbania punicea (Leguminosae) in South Africa nipped in the bud by the weevil Trichapion lativentre
761The role of insects in the long term control of Opuntia aurantiaca
771Biocontrol agents for Parthenium hysterophorus from Mexico
779Introduction of the gall fly Rhopalomyia californica from the U.S.A. into Australia for the control of the weed Baccharis halimifolia
789The biological control programme against Parthenium hysterophorus in Queensland
797A most promising bud-galling wasp, Trighilogaster acaciaelongifoliae (Pteromalidae), established against Acacia longifolia in South Africa
805A seed-feeding insect showing promise in the control of a woody invasive plant: the weevil Erytenna consputa on Hakea sericea (Proteaceae) in South Africa
811A new era of biological weed control in the western United States
817Biological control of weeds in Washington: status report
827The place of biological control of field bindweed in California's coastal vineyards (ABSTRACT ONLY)
829Candidate insects for the biological control of Rumex pulcher
837Status of biological weed control in Montana
843Biological control of Harrisia cactus, Eriocereus martinii, in central Queensland by the mealybug, Hypogeococcus festerianus, nine years after release
849The biological control of Acacia nilotica indica in Australia
855Bruchid seed beetles for control of Parkinsonia aculeata in Australia
865The entomological role of weeds in agroecosystems: Implications in biological control of weeds and insects (ABSTRACT ONLY)
867Biocontrol of Canada thistle with pathogenic fungi (ABSTRACT ONLY)
869Native weeds as candidates for biological control research
footer line
USDA Forest Service Bugwood University of Georgia