A method of analysis for the determination of binapacryl, bupirimate and diflubenzuron on apple foliage and fruit, and its application to persistence studies

Austin, Daniel; Hall, Kathleen J.

doi:10.1002/ps.2780120505

Cited by 14 publications

(8 citation statements)

References 6 publications

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“…Most methods use liquid chromatography with UV detection for the analysis of benzylphenylurea compounds such as DFB [43,44]. HPLC was found to be one of the best methods due to its sensitivity [17].…”

Section: Discussionmentioning

confidence: 99%

Experimental Study on Diflubenzuron: Degradation in Freshwater and Bioconcentration in Mosquitofish Following Chronic Exposure

Zaidi¹,

Farine²,

Soltani³

2013

JEP

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Diflubenzuron (DFB, trade name dimilin ® 25 WP) is a chitin synthesis inhibitor widely used against forest insect pests in Algeria. Prior to implementation of these products as chemical agents for mosquito control, knowledge on their potential effects on non-target organisms and its behaviour in water are needed. Therefore, the present study was focused on DFB and aimed to use an HPLC procedure developed previously in order to obtain information on its degradation in freshwater and its bioconcentration in adult females of the fish Gambusia affinis (Cyprinodondiformes, Poeciliidae), which is one of the best candidates for biological control programs against mosquitoes. The adult females were exposed to dimilin ® (initial concentration 312 ng a.i./ml) for 28 days and residues analysis determined at different exposure times (0, 7, 14, 21 and 28 days). The concentration of DFB in freshwater decreased with exposure time while the amount of residues detected at the surface of the fish body increased progressively to reach a maximum at day 14 (162.7 ± 14.0 ng/fish) and declined thereafter during the exposure period. In addition, DFB incorporation into body increased with decreasing DFB concentration in water at each exposure time. The following average distribution was noted at the end of experiment (28 days): about 33% of the applied concentration was detected on the surface of fish body and was recovered by simple rinsing, and about 67% was found inside the fish body. A degradation in water and surface of fish occurred starting day 14 during the experimental period. Thus, about 40% of the initial concentration was degraded in freshwater after 28 days. The results are discussed to develop a better understanding of the degradation of dimilin in water and their potential effect on non-target organisms for its application for controlling mosquito.

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Section: Discussionmentioning

confidence: 99%

Experimental Study on Diflubenzuron: Degradation in Freshwater and Bioconcentration in Mosquitofish Following Chronic Exposure

Zaidi¹,

Farine²,

Soltani³

2013

JEP

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“…Recently, the methods developed for determination of BP were high performance liquid chromatography (HPLC) [3,4], gas chromatographic (GC) [5,6] and gas chromatographymass (GC-MS) [7,8]. These methods are accurate and reliable, with low detection limits and high reproducibility.…”

Section: Introductionmentioning

confidence: 99%

Notice of Retraction: Synthesis and Identification of Artificial Antigen for Bupirimate

Zhang

Wei

et al. 2011

2011 5th International Conference on Bioinformatics and Biomedical Engineering

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In this study, artificial antigens for Bupirimate (BP) were prepared by means of two-step procedure of glutaraldehyde method. The hapten BP was covalently attached to ovalbumin and Bovine Serum Albumin (BSA), respectively abbreviated as BP-OVA and BP-BSA. In addition some improvements were raised on the conditions for BP coupling of OVA or BSA. The conjugates were identified by UV spectrophotometry and SDS-PAGE. The results preliminarily indicated that the artificial antigen for BP synthesized successfully.

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“…Presumably, some redistribution of residues must have occurred. Other workers (Austin and Hall 1981;Austin and Carter 1986) also have shown the persistence of diflubenzuron to be season long (until leaf fall) on apple foliage. Moffitt et al (1984) found that applications of diflubenzuron affected egg hatch of codling moth for up to 19 weeks.…”

Section: Discussionmentioning

confidence: 92%

EFFECTS OF BENZOYLPHENYLUREA INSECT GROWTH REGULATORS ON EGGS AND LARVAE OF THE SPOTTED TENTIFORM LEAFMINER PHYLLONORYCTER BLANCARDELLA (FABR.) (LEPIDOPTERA: GRACILLARIIDAE)

1988

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Three benzoylphenylurea insecticides, diflubenzuron, triflumuron, and teflubenzuron, were toxic when applied to eggs of Phyllonorycter blancardella (Fabr.) 0–2 and 4–6 days post-oviposition. Most treated eggs hatched but larvae died in the early instars. High larval mortalities also occurred when treatments were applied to foliage prior to oviposition. Treatments applied to larvae, especially older larvae, were less toxic than those applied to eggs. In the field, control was similar whether insecticides were applied during egg deposition, first hatch of eggs, or against early-instar larvae. Applications during egg deposition are suggested as optimal for control. Control of spotted tentiform leafminer with insect growth regulators was equivalent to that obtained with deltamethrin or methomyl.Residues of diflubenzuron and triflumuron, applied pre-bloom, persisted until leaf drop 19 weeks later. Residues of teflubenzuron persisted for 9 weeks. Populations of spotted tentiform leafminer were suppressed throughout the season and residues of all insect growth regulators except teflubenzuron applied in May were toxic to larvae into October.

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A method of analysis for the determination of binapacryl, bupirimate and diflubenzuron on apple foliage and fruit, and its application to persistence studies

Cited by 14 publications

References 6 publications

Experimental Study on Diflubenzuron: Degradation in Freshwater and Bioconcentration in Mosquitofish Following Chronic Exposure

Experimental Study on Diflubenzuron: Degradation in Freshwater and Bioconcentration in Mosquitofish Following Chronic Exposure

Notice of Retraction: Synthesis and Identification of Artificial Antigen for Bupirimate

EFFECTS OF BENZOYLPHENYLUREA INSECT GROWTH REGULATORS ON EGGS AND LARVAE OF THE SPOTTED TENTIFORM LEAFMINER PHYLLONORYCTER BLANCARDELLA (FABR.) (LEPIDOPTERA: GRACILLARIIDAE)

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