Greenhouse whitefly, Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae), is a serious pest of numerous crops grown in greenhouses and field-grown strawberry yr-round production areas California, USA. Problems with insecticide resistance have prompted the search for more sustainable methods their management. Here, we applied UV-C light treatments nightly 16 s (19.2 J m–2) over 6-wk pe...

Eberhard, William G. The Ecology and Behavior of a Subsocial Pentatomid Bug and Two Scelionid Wasps: Strategy and Counterstrategy in a Host and Its Parasites. Smithsonian Contributions to Zoology, number 205, 39 pages, 13 figures, 24 tables, 1975.—The tropical bug Antiteuchus tripterus and two parasites of its eggs, Trissolcus bodkini and Phanuropsis semiflaviventris, were studied in urban Cali...

Reproductive manipulations of hosts by maternally inherited bacterial endosymbionts often result in an increase in the proportion of infected female hosts in the population. When this involves the conversion of incipient males to genetic or functional females, it presents unique difficulties for symbionts invading hosts with sex-specific reproductive behaviours, such as the autoparasitic Encars...

Abstract Doru luteipes (Scudder, 1876) is an omnivorous predator that finds different food resources in the corn plant: eggs of Spodoptera frugiperda (J.E. Smith, 1797), uredospores Puccinia polysora (Underw, 1897), and pollen. Knowing survival preferences this essential to define its relevance as a biological control agent. We hypothesize foraging behavior predatory capacity D. may be affected...

Tetranychus bastosi Tuttle, Baker & Sales (Acari: Tetranychidae) is a species with restricted occurrence in Brazil and has already been reported infesting 36 of plants, including ornamental, fruits, leguminous spontaneous plants. In Alagoas state, its presence was found on Turnera subulata L. Ipomoea batatas To analyse the population growth T. hosts, bioassays were carried out evaluating in...

Developmental time, parasitism, emergence, longevity, fecundity and demographic parameters of population of Encarsia bimaculata Heraty and Polaszek (Hymenoptera: Aphelinidae), a parasitoid attacking Bemisia tabaci (biotype B) (Gennadius) (Homoptera: Aleyrodidae) infesting soybean, Glyine max L. (Merr), cowpea, Vigna unguiulata L. and garden bean, Phaseolus vulgaris L. (Fabeles: Fabaceae) were q...

An important concern with the use of genetically modified (GM) plants expressing Bacillus thuringiensis (Bt) insecticidal toxins is deleterious effect on non–target organisms. The predatory stink bug Podisus nigrispinus (Dallas) (Hemiptera: Pentatomidae) used in biological control programs and may be exposed to Bt toxins. This study evaluated indirect effects different Cry proteins P. prey Spod...

Aspects related to hatching, time-lapse between presenting the blood-meal and beginning of feeding, feeding time, postfeed defecation delay, mortality, and fecundity for each stage of Meccus longipennis life-cycle were evaluated. The bugs were maintained in a dark incubator at 27 1 C and 80 5% rh, were fed weekly and checked daily for ecdysis or death. The hatching rate observed for 300 egg...

Leptoglossus zonatus (Dallas) (Hemiptera: Coreidae) has recently emerged as a key pest of satsuma mandarin, Citrus unshiu Marcovitch, and other fruit crops in the Gulf Coast region of the United States. Studies were conducted under laboratory conditions (25 +/- 2 degrees C, 50 +/- 10% RH, and a photoperiod of 14:10 [L:D] h) to investigate host preference and suitability of satsuma fruit as host...