Codling moth, Cydia pomonella (L.), remains a principal insect pest of tree fruit orchards throughout the temperate regions of the world (Barnes 1991; Beers et al. 1993). Its larvae bore deep into the fruits of apple, pear and walnut making them unmarketable. The majority of conventional growers still rely on chemical insecticides to control this insect. However, concerns regarding development ...

We monitored the phenology of oviposition by grape berry moth, Paralobesia viteana (Clemens) (Lepidoptera: Tortricidae), in grape (Vitis spp.) vineyards, to determine the optimal timing for control of this pest. Egg deposition was monitored throughout the growing season by visually inspecting grape clusters twice weekly and counting the number of eggs. Male moths were captured on pheromone-bait...

The larval attractant kairomonc, ethyl (2E. 4Z)-2,4-decadienoate or pear ester (PE), was tested in a Californian walnut orchard for its control efficacy against codling moth larvae, Cydia pomonella (L.) (Lepidoptera: Tortricidae) in a microencapsulated bait spray formulation (PE-MEC) combined with various insecticides (choropyrifos, phosmet, methoxyfenozide and a granulosis virus, Cyd-X). PE-ME...

Insecticide bioassays of the leafrollers, Choristoneura rosaceana (Harris), and Pandemis pyrusana Kearfott (Lepidoptera: Tortricidae), were used to investigate resistance and cross-resistance between azinphosmethyl and other insecticides. Comparisons of field-collected populations with susceptible laboratory colonies of both leafroller species were made in 1996-97, prior to registration and fie...

The causes of the current global decline in honey bee health are unknown. One major group of hypotheses invokes the pesticides and other xenobiotics to which this important pollinator species is often exposed. Most studies have focused on mortality or behavioral deficiencies in exposed honey bees while neglecting other biological functions and target organs. The midgut epithelium of honey bees ...

the mediterranean flour moth, ephestia kuehniella zeller, is one of the major pests in stored products worldwide. several problems assossiated with the use of conventional insecticides have strongly demonstrated the need for applying alternative safe compounds such as insect growth regulators (igrs). in the present study, growth regulating activity and hematological effects of pyriproxifen and ...