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Phosphine Resistance in Tribolium castaneum and Rhyzopertha dominica from Stored Wheat in Oklahoma
TLDR
A substantial increase in phosphine resistance in these major stored-wheat pests in the past 21 yr is suggested, and these levels of resistance to phosphine approach those reported for other stored-grain pest species in other countries.
Efficacy of Ozone Fumigation Against the Major Grain Pests in Stored Wheat
TLDR
Ozone treatment at a concentration of 70 ppmv was highly effective against adult female Liposcelis bostrychophila Badonnel and Liposcoris paeta Pearman after only 1 d of exposure, however, it was not effective against eggs of both species at all exposure periods.
Biological control of twospotted spider mites, Tetranychus urticae Koch (Acari: Tetranychidae), using Phytoseiulus persimilis Athias-Henriot (Acari: Phytoseidae) on ivy geranium: assessment of
TLDR
The potential of P. persimilis to provide effective control of T. urticae on a greenhouse-grown floricultural crop at a moderately low predator:prey ratio (1:20) and over a range of initial pest densities is demonstrated.
Effects of Temperature and Relative Humidity on Development, Reproduction, and Predation in Feltiella acarisuga (Vallot) (Diptera: Cecidomyiidae)
TLDR
It is concluded that F. acarisuga will complete its life cycle and reproduce under conditions typically found in vegetable greenhouses in northern temperate climates, however, extended periods of low RH (<60% RH) could reduce reproduction and survivorship sufficiently to impair the predator's action against spider mite populations.
THE FUNCTIONAL RESPONSE AND PREY PREFERENCE OF FELTIELLA ACARISUGA (VALLOT) (DIPTERA: CECIDOMYIIDAE) FOR TWO OF ITS PREY: MALE AND FEMALE TWOSPOTTED SPIDER MITES, TETRANYCHUS URTICAE KOCH (ACARI:
TLDR
The predatory midge, Feltiella acarisuga (Vallot), was found to exhibit no preference for either female or male mites; when both prey were present in equal numbers, midge larvae killed as many females as males.
The life cycle and management of Echinothrips americanus (Thysanoptera: Thripidae)
TLDR
The results indicate that O. insidiosus has the most potential as a biocontrol agent for thrips populations, but the two predator mite species did not.
Diagnostic Molecular Markers for Phosphine Resistance in U.S. Populations of Tribolium castaneum and Rhyzopertha dominica
TLDR
A diagnostic cleaved amplified polymorphic sequence method, CAPS, is developed to detect individuals with alleles for strong resistance to phosphine in populations of the red flour beetle and the lesser grain borer, Rhyzopertha dominica, according to a single nucleotide mutation in the dihydrolipoamide dehydrogenase gene.
Acute lethal and behavioral sublethal responses of two stored-product psocids to surface insecticides.
TLDR
Assessment of the label rate efficacy of three commercial insecticides applied on concrete surfaces against L. bostrychophila and L. entomophila found that the insecticides reduced the mobility of both species, which may be a contributing factor to its higher insecticide tolerance.
Population Growth and Development of the Psocid Lepinotus reticulatus at Constant Temperatures and Relative Humidities
TLDR
It is shown that psocids that consume their exuviae develop faster than those that do not, and this effect is more pronounced at lower temperatures, and they can be used to develop effective management strategies for this psocid.
Within-plant distribution of twospotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), on ivy geranium: development of a presence-absence sampling plan.
TLDR
This study developed a presence-absence sampling method for T. urticae in ivy geranium using generic Taylor's coefficients for this pest, and found the optimal binomial sample sizes for estimating populations of T. Urticae at densities of between 0 and 3 mites/leaf to be quite large.
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