Miticidal Properties of Fenpropathrin against Carmine Mites and Citrus Red Mites

Abstract

Fenpropathrin(ca-cyano-3-phenoxybenzyl 2, 2, 3, 3-tetramethylcyclopropanecarboxylate) was examined for toxicity to mites and for effect upon fecundity, paralyzing action and repellency. Fenpropathrin was highly toxic to adults of carmine mite, Tetranychus cinnabarinus BOISDUVAL and citrus red mite, Panonychus citri MCGREGOR, and its ovicidal activity was comparable to that of dicofol and amitraz. It weakened the feeding activity of adult mites, and consequently reduced the number of eggs laid. It also showed characteristic repellency which induced changes in mite's behavior on the host plants. Carmine mites treated with fenpropathrin at low concentrations moved away from treated leaves. When treated with fenpropathrin at 0.16ppm, mites hung on threads from the leaves, and this "spinning down" increased with the dose. The decrease in the number of mites leaving treated leaves at higher concentrations was attributed to the quick paralyzing action by fenpropathrin.More carmine mites spun down from completely treated plants than from partially treated ones, where they had a choice between treated and untreated parts of each plant. Most of the citrus red mites treated with 25ppm and 50ppm fenpropathrin spun down from the host plants within 9 hr.

Development, Oviposition, and Mortality of <I>Neoseiulus fallacis</I> (Acari: Phytoseiidae) in Response to Reduced-Risk Insecticides

“…The pyrethroid fenpropathrin is an insecticide with acaricidal properties (Kasamatsu and Fujita 1986), and in our test it was the most toxic chemical evaluated against N. fallacis. Also, when T. urticae eggs were dipped into this product and later ingested by N. fallacis, mortality was high, oviposition ceased (Fig.…”

A comparison of the toxic and sub-lethal effects of fluvalinate and esfenvalerate on the twospotted spider mite (Acari: Tetranychidae)

“…Increases in fecundity (Jones and Parella, 1984), decreases (Penman et al, 1981;Hoying, 1980, 1983;Iftner and Hall, 1984;EI-Banhawy and Anderson, 1985;Kasamatsu and Fujita, 1986;McKee et al, 1987;Rasmy and Elsawy, 1988;Donahue and McPherson, 1990) and no effect (Iftner and H',dl, 1984) have been reported, Fecundity was reduced with increasing pyrethroid concentration (Penman et al, 1981;E1-Banhawy and Anderson, 1985;Kasamatsu and Fujita, 1986).…”

“…By comparison there has been little research on the toxicity of pyrethroids to spider mite eggs and juveniles. The ovicidal activity of pyrethroids varies, but is minimal lbr most pyrethroids at field concentrations (Hurkova, 1984), although cyfluthrin and fenpropathrin showed some ovicidal activity (Kasamatsu and Fujita, 1986;EI-Banhawy and Reda, 1988).…”

“…Reductions in fecundity on pyrethroid-treated surthces were attributed to reduced feeding (Iftner et al, 1986, Kasamatsu andFujita, 1986), chronic poisoning (Donahue and McPherson, 1990) and changes in ovipositing behaviour (Iftner and Hall, 1984;McPherson et al, 1988). When given the choice, spider mites oviposited in untreated rather than pyrethroid-treated areas (Penman et al, 1981;McPherson et al, 1988;Donahue and McPherson, 1990;Holland et aI., 1994).…”

Effects of fluvalinate on two‐spotted spider mite dispersal, fecundity and feeding

“…Dispersion from treated surfaces occurs at concentrations below those causing mortality (Penman et al, 1981;Iftner & Hall, 1983;Penman & Chapman, 1983) by running off (runoff), spinning down (spin-down) (Penman & Chapman, 1983;Iftner & Hall, 1983) or aerially in the presence of wind (Margolies & Kennedy, 1988). The ratio of run-off to spin-down differs between pyrethroids (Penman & Chapman, 1983;Donahue et al, 1988) and concentration (Kasamatsu & Fujita, 1986). The method of dispersal may affect the distance and success of locating alternate resources.…”