Prospects for Integrated Control of the Colorado Potato Beetle (Coleoptera: Chrysomelidae) Using Perillus Bioculatus (Hemiptera: Pentatomidae) and Various Pesticides

Hough-Goldstein, Judith; Keil, Clifford B.

doi:10.1093/jee/84.6.1645

Cited by 50 publications

(31 citation statements)

References 11 publications

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“…Although novaluron is generally considered a selective, reduced risk insecticide, our results indicate that all three P. maculiventris life stages would be susceptible to novaluron through several routes of exposure. The direct contact LC 50 of novaluron for P. maculiventris second instars was 18.7 ppm, a concentration that falls within the range of toxicity of broad-spectrum insecticides reported by Yu (1988) and Hough-Goldstein and Keil (1991), albeit novaluron was less toxic than several of these compounds. Novaluron had similar direct contact toxicity to L. decemlineata second instars (LC 50 = 27 ppm) (Cutler et al, 2005a).…”

Section: Discussionsupporting

confidence: 66%

“…In contrast, Bacillus thuringiensis var. san diego and cryolite were found to be practically non-toxic to P. bioculatus nymphs by topical exposure (Hough-Goldstein and Keil, 1991), as were topical applications of diflubenzuron, the first developed benzoylphenyl urea, to P. maculiventris (De Clercq et al, 1995). The selectivity of diflubenzuron is partly due to its tendency to remain in the cuticular waxes following direct contact (Retnakaran and Wright, 1987).…”

Section: Discussionmentioning

confidence: 99%

“…Nymphs exposed to encapsulated k-cyhalothrin by ingestion and residual contact quickly recovered after knock-down (Vandekerkhove and De Clercq, 2004). Hough-Goldstein and Keil (1991) reported that P. bioculatus nymphs were highly susceptible to esfenvalarate, oxamyl, and endosulfan through exposure to treated potato foliage, but were unaffected by exposure to B. thuringiensis and cryolite treated foliage.…”

Section: Discussionmentioning

confidence: 99%

“…Adults and nymphs also were susceptible to prey treated with organophosphorus or neonicotinoid insecticides (Tillman and Mullinix, 2004). Hough-Goldstein and Keil (1991) found that P. bioculatus third instars were highly susceptible to endosulfan, and moderately so to esfenvalarate and oxamyl, but tolerant of L. decemlineata larvae treated with B. thuringiensis and cryolite.…”

Section: Discussionmentioning

confidence: 99%

“…A number of researchers have studied the impact of pesticides on stinkbug predators (De Clercq et al, 1995;De Cock et al, 1996;Hough-Goldstein and Keil, 1991;Mohaghegh et al, 2000;Tillman and Mullinix, 2004;Vandekerkhove and De Clercq, 2004;Wilkinson et al, 1979;Yu, 1988). Anticipating the use of novaluron in future L. decemlineata management, we investigated the susceptibility of P. maculiventris to novaluron.…”

Section: Introductionmentioning

confidence: 99%

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Toxicity of the insect growth regulator novaluron to the non-target predatory bug Podisus maculiventris (Heteroptera: Pentatomidae)

et al. 2006

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Novaluron is a novel insect growth regulator that exhibits potent insecticidal activity against the Colorado potato beetle, Leptinotarsa decemlineata (Say). The predatory bug Podisus maculiventris (Say) is a natural enemy of the potato beetle found throughout North America, and is widely available commercially. Anticipating the use of novaluron in L. decemlineata management, we conducted laboratory experiments to determine the susceptibility of P. maculiventris to novaluron. Although there was a 2-to 3-day delay in the onset of toxic effects, second instars were susceptible by direct contact and through exposure to potato foliage treated with field rates. When P. maculiventris eggs were dipped in field rate novaluron solutions, there was no significant effect on percent hatch, but there was subsequently a sharp decrease in the ability of hatched nymphs to molt. Similarly, fifth instars actively preyed on L. decemlineata larvae dipped in field rate novaluron solutions, but were thereafter unable to molt into adults. Female P. maculiventris adults caged with L. decemlineata larvae and novaluron treated potato plants had reduced longevity compared to those caged with untreated potato plants. Further, oviposition and hatch of eggs from adults on novaluron treated plants was significantly reduced. Although novaluron has demonstrated selectivity in favor of beneficial insects in other studies, these results suggest that P. maculiventris would be adversely affected.

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Section: Discussionsupporting

confidence: 66%