Endemic Aleyrodidae (Homoptera) and their parasites (Hymenoptera) on southern Vancouver Island, British Columbia

Four species of whitefly (<i>Trialeurodes vaporariorum</i> (Westwood), <i>T. merlini</i> (Bemis), <i>Aleyrodes spiraeoides</i> Quaint., and <i>Aleyrodes</i> sp. A) were collected on native plants on southern Vancouver Island. Three species of parasite (<i>Encarsia</i> sp. (?formosa Gah.), <i>Euderomophale</i> sp. and <i>Amitus arcturus</i> Whitt.) were reared from these species. The possibility of using these parasites for biological control of <i>T. vaporariorum</i> in greenhouses is briefly discussed

A simple rearing method for fungus gnats Corynoptera sp. (Diptera: Sciaridae) with notes on life history

A method of rearing fungus gnats of <i>Corynoptera</i> sp. (Diptera: Sciaridae) is described, based on a diet of bean seed and horticultural peat. The gnats completed development from egg to adult in 13-15 days at 24 + 2° C. Oviposition and longevity were increased by a honey supplement to the adults

Leafrollers (Lepidoptera) on berry crops in the Lower Fraser Valley, British Columbia

A survey of tortricid leafrollers and other lepidopterous larvae with leafrolling habits on berry crops in the Lower Fraser Valley, B.C., revealed 16 species feeding on blueberry, four on cranberry, eight on raspberry and four on strawberry. The most abundant species were <i>Choristoneura rosaceana</i>, <i>Spilonota ocellana</i>, <i>Archips rosanus</i> and <i>Cheimophila salicella</i> on blueberry, <i>Operophtera bruceata</i>, <i>C. rosaceana</i> and <i>Acleris comariana</i> on rapsberry, <i>Rhopobota naevana</i> on cranberry, and <i>A. comariana</i> on strawberry. Some of the species have apparently not been reported previously as feeding on some of the berry crops. Four species previously reported as pests of berry crops in the Lower Fraser Valley were not found. Fields treated with insecticides early in the season, whether or not for leafrollers, had lower leafroller populations than untreated fields. There is no objective evidence that leafroller populations were sufficient to cause economic injury to any of the crops. Subjective observations confirm the economic importance of leafroller damage to cranberry and suggest that economic injury may occur on blueberry

Baseline Evaluation: Evaluating Consistency between Federal Standards and Local Provisions

Baseline evaluation is a form of evaluation procedure in which objectives related to several dimensions of response to a social problem are set externally in the form of federal standards. The standards form the baseline against which local provisions can be compared. The case example giving rise to the development and field testing of the baseline evaluation procedure was new Federal Standards on the Prevention, Identification and Treatment of Child Abuse and Neglect. The baseline evaluation methodology is described and problems encountered are discussed

Proceedings of the 5th International Symposium on Biological Control of Arthropods

This proceedings contains papers dealing with issues affecting biological control, particularly pertaining to the use of parasitoids and predators as biological control agents. This includes all approaches to biological control: conservation, augmentation, and importation of natural enemy species for the control of arthropod targets, as well as other transversal issues related to its implementation. It has 14 sessions addressing the most relevant and current topics in the field of biological control of arthropods: (i) Accidental introductions of biocontrol agens: positive and negative aspects; (ii) The importance of pre and post release genetics in biological control; (iii) How well do we understand non-target impacts in arthropod biological control; (iv) Regulation and access and benefit sharing policies relevant for classical biological control approaches; (v) The role of native and alien natural enemy diversity in biological control; (vi) Frontiers in forest insect control; (vii) Biocontrol marketplace I; (viii) Weed and arthropod biological control: mutual benefits and challenges; (ix) Maximizing opportunities for biological control in Asia's rapidly changing agro-environments; (x) Biological control based integrated pest management: does it work?; (xi) Exploring the compatibility of arthropod biological control and pesticides: models and data; (xii) Successes and uptake of arthropod biological control in developing countries; (xiii) Socio-economic impacts of biological control; (xiv) Biocontrol marketplace II

A list of plant-feeding Lepidoptera introduced into British Columbia

Each of 48 species of plant-feeding Lepidoptera known to be foreign to North America and to occur in British Columbia is briefly summarized with its history and importance. Those feeding on stored products are not indicated

A simple rearing method for fungus gnats Corynoptera sp. (Diptera: Sciaridae) with notes on life history

A method of rearing fungus gnats of Corynoptera sp. (Diptera: Sciaridae) is described, based on a diet of bean seed and horticultural peat. The gnats completed development from egg to adult in 13-15 days at 24 + 2° C. Oviposition and longevity were increased by a honey supplement to the adults

Reproduction and longevity of the predatory mite, Phytoseiulus persimilis (Acari: Phytoseiidae) and its prey, Tetranychus urticae (Acari: Tetranychidae) on different host plants

The biological control of twos potted spider mites by the predator Phytoseiulus persimilis is usually unsuccessful on greenhouse tomato crops in British Columbia. Experiments were conducted to determine the influence of host plant on the longevity and reproduction of the predator, and on the suitability of twospotted spider mites as prey. Lifespan and reproduction of P. persimilis were lower on tomato leaves than on bean leaves but feeding on spider mites that had been reared on tomato or bean leaves had no effect on the reproduction or lifespan of P. persimilis. A strain of twospotted spider mites that came from an outbreak on a greenhouse tomato crop lived for shorter periods and laid fewer eggs when confined on tomato leaves than on bean leaves. A strain of twospotted spider mites that had been maintained on bean leaves was unable to reproduce on tomato leaves. Exudates from glandular hairs were toxic to P. persimilis. Glandular hairs are important in pest management on tomato crops. Their removal through breeding might make plants more susceptible to herbivores. Therefore it would be preferable to develop other methods for biological control of twospotted spider mites on tomato