The Residual and Direct Effects of Reduced-Risk and Conventional Miticides on Twospotted Spider Mites, Tetranychus Urticae (Acari: Tetranychidae) and Predatory Mites (Acari: Phytoseiidae)

Liburd, Oscar E.; White, Jeffery C.; Rhodes, Elena M.; Browdy, Angeleah A.

doi:10.1653/0015-4040(2007)90[249:tradeo]2.0.co;2

Cited by 38 publications

(22 citation statements)

References 24 publications

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“…Twospotted spider mites were observed to aggregate on the older trifoliates (mean number of TSSM motiles was 160.0 § 18.0 per trifoliate on untreated trifoliates). Neoseiulus californicus may have dispersed to areas of high prey density within the plant, possibly due to olfactory response to kairmones emitted from TSSM infested leaves (Dicke and Sabelis 1988;Liburd et al 2007). …”

Section: The 2006-2007 Trialmentioning

confidence: 99%

“…As a type II generalist, N. californicus can adapt to Xuctuations in prey populations and temperature, providing consistent pest suppression Greco et al 2005;Escudero and Ferragut 2005). Easterbrook (1992), , Escudero and Ferragut (2005), and Liburd et al (2007) have demonstrated that N. californicus is tolerant to many insecticides and fungicides, and is able to remain viable at temperatures from 10°C to approximately 32°C (Hart et al 2002). Rhodes et al (2006) found that N. californicus is able to maintain more consistent control of TSSM populations compared with P. persimilis throughout the season in north Florida strawberry Welds.…”

Section: Introductionmentioning

confidence: 99%

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Biological control of twospotted spider mite, Tetranychus urticae, with predatory mite, Neoseiulus californicus, in strawberries

Fraulo

Liburd

2007

Exp Appl Acarol

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Greenhouse and field experiments were conducted from 2005 to 2007 to determine the effectiveness of different release times with the predatory mite, Neoseiulus californicus (McGregor), for control of the twospotted spider mite (TSSM), Tetranychus urticae Koch, in strawberries (Fragaria x ananassa Duchesne). The effect of N. californicus releases over time and on development of TSSM populations during a growing season were evaluated. Our hypothesis was that repeated applications of N. californicus, which is currently recommended by biological control companies, might be unnecessary to attain season-long control of TSSM. In greenhouse trials, three treatments consisting of releases of N. californicus at five-day intervals: day 0, day 5, and day 10, and an untreated control were evaluated. The treatment releases significantly reduced TSSM below the control within five days of each release. Neoseiulus californicus significantly reduced TSSM in treatments with high densities (leaflets with > or =40 TSSM) below that of treatments with lower densities (leaflets with < or = 10 TSSM) demonstrating that if released at a predator: prey ratio of 1:10, timing of release does not alter the effectiveness of N. californicus in controlling TSSM. However, we found that if the ratio of predator: prey remains adequate, N. californicus is a more efficient predator at high TSSM densities. Field studies included three treatments consisting of releases of N. californicus at one-month intervals. All treatments significantly reduced TSSM compared with the control plots (no releases). Releases applied early in the season sustained TSSM significantly below those in the control plots for the whole season. Our results indicate that one release of N. californicus is able to sustained control of TSSM in strawberry throughout a growing season if released when TSSM populations are low early in the season in the southeastern United States.

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Section: The 2006-2007 Trialmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Biological control of twospotted spider mite, Tetranychus urticae, with predatory mite, Neoseiulus californicus, in strawberries

Fraulo

Liburd

2007

Exp Appl Acarol

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“…In Brazil, control of TSSM populations is done mainly by pesticides, but in some cases pesticide sprays make the pest problem even worse because they negatively affect natural enemies (Liburd et al 2007). Furthermore, strains of TSSM resistant to pesticides are selected, making chemical control more difficult (Sato et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the predatory mite Phytoseiulus macropilis (Acari: Phytoseiidae) as a biological control agent of the two-spotted spider mite on strawberry plants under greenhouse conditions

et al. 2008

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The predatory mite Phytoseiulus macropilis is a potential biological control agent of the two-spotted spider mite (TSSM) Tetranychus urticae on strawberry plants. Its ability to control TSSM was recently assessed under laboratory conditions, but its ability to locate and control TSSM under greenhouse conditions has not been tested so far. We evaluated whether P. macropilis is able to control TSSM on strawberry plants and to locate strawberry plants infested with TSSM under greenhouse conditions. Additionally, we tested, in an olfactometer, whether odours play a role in prey-finding by P. macropilis. The predatory mite P. macropilis required about 20 days to achive reduction of the TSSM population on strawberry plants initially infested with 100 TSSM females per plant. TSSM-infested plants attract an average of 27.5 ± 1.0% of the predators recaptured per plant and uninfested plants attracted only 5.8 ± 1.0% per plant. The predatory mites were able to suppress TSSM populations on a single strawberry plant and were able to use odours from TSSM-infested strawberry plants to locate prey in both olfactometer and arena experiments. Hence, it is concluded that P. macropilis can locate and reduce TSSM population on strawberry plants under greenhouse conditions.

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“…Although several pesticides targeted at T. urticae have different side effects on N. californicus (Bittencourt Monteiro 2001, Sato et al 2002, Castagnoli et al 2005, Liburd et al (2007) have reported that Acramite 1 (binfenazate) had low toxicity towards predatory mites, and was recommended for use in combination with the predatory mites for the control of T. urticae on strawberries (Rhodes and Liburd 2006). Similarly, Cloyd et al (2006) and Liburd et al (2007) found that bifenazate was not toxic to N. californicus.…”

Section: Discussionmentioning

confidence: 99%

Pest management plan for the two-spotted spider mite,Tetranychus urticae, based on the natural occurrence of the predatory miteNeoseiulus californicusin strawberries

Greco

Liljesthröm

Ottaviano

et al. 2011

International Journal of Pest Management

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We developed and validated a management plan for Tetranychus urticae in strawberries, based on the natural control exerted by Neoseiulus californicus and on acaricide applications made only when necessary. The plan has two components: a sampling protocol and a decision chart. Systematic presence-absence sampling of active T. urticae and N. californicus was used to predict prey and predator densities relying only on the proportion of T. urticaeinfested leaflets, once the occurrence of the predator was detected in at least one of them. The decision chart, which was constructed taking into account the pest and predator densities and the pest's rate of increase, determines the range in the proportion of T. urticae-infested leaflets that will require different actions: to use selective acaricides and re-check at 7 days, to take no action but re-check at 7 days, or to take no action but re-check at 14 days. The management plan was potentially effective and feasible, showing that natural populations of N. californicus can consistently exert strong top-down suppression of T. urticae. Thus, N. californicus is a promising candidate for conservation biological control.

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The Residual and Direct Effects of Reduced-Risk and Conventional Miticides on Twospotted Spider Mites, Tetranychus Urticae (Acari: Tetranychidae) and Predatory Mites (Acari: Phytoseiidae)

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 38 publications

References 24 publications

Biological control of twospotted spider mite, Tetranychus urticae, with predatory mite, Neoseiulus californicus, in strawberries

Biological control of twospotted spider mite, Tetranychus urticae, with predatory mite, Neoseiulus californicus, in strawberries

Evaluation of the predatory mite Phytoseiulus macropilis (Acari: Phytoseiidae) as a biological control agent of the two-spotted spider mite on strawberry plants under greenhouse conditions

Pest management plan for the two-spotted spider mite,Tetranychus urticae, based on the natural occurrence of the predatory miteNeoseiulus californicusin strawberries

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