Mode of action and insecticidal properties of diflubenzuron

Grosscurt, A. C.; Jongsma, Berend

doi:10.1007/978-94-009-4824-2_4

Cited by 44 publications

(27 citation statements)

References 81 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Effects of DFB on reproduction were reviewed by Grosscurt and Jongsma (1987), specifically in pest insects. This insect growth regulator (IGR) prevents chitin production so that embryos die within the egg shell as fully developed larvae but unable to hatch.…”

Section: Introductionmentioning

confidence: 99%

Significance of penetration, excretion, and transovarial uptake to toxicity of three insect growth regulators in predatory lacewing adults

Medina

Smagghe

Budia

et al. 2002

Arch Insect Biochem Physiol

View full text Add to dashboard Cite

Topical treatment of the predatory lacewing adults, Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae) before and after the onset of oviposition with diflubenzuron (DFB) at doses based on the maximum field recommended concentration resulted in a total inhibition of egg hatch due to death of the embryo. In contrast, pyriproxyfen (PYR) and tebufenozide (TEB) did not affect fecundity and egg fertility. To explain these differences in toxicity, the patterns of penetration through the cuticle, distribution inside the insect body, and excretion were studied using [(14)C]-labeled isotopes of each insect growth regulator (IGR). Penetration of DFB and TEB reached about 16 and 26% in 7 days, whereas 88% of PYR had penetrated in 24 h. However, the rate of excretion for PYR was very high, compared to that of DFB and TEB. Low amounts of absorbed radioactivity were recovered from the female body with the exception of DFB, the ovaries and the eggs deposited during a week. DFB and PYR concentration reached a peak in the eggs deposited at the fourth and second day after treatment, respectively. The current data indicate the importance of penetration through the insect cuticle. However, other mechanisms are likely to be involved in the selectivity of the current IGRs towards this beneficial insect.

show abstract

Section: Introductionmentioning

confidence: 99%

Significance of penetration, excretion, and transovarial uptake to toxicity of three insect growth regulators in predatory lacewing adults

Medina

Smagghe

Budia

et al. 2002

Arch Insect Biochem Physiol

View full text Add to dashboard Cite

show abstract

“…Periods longer than 4 days may cause bias due to multiple broods being produced by a single female. Interestingly, in insects, DFB does not affect development of the larvae while in the egg, but they are unable to hatch and those that do hatch successfully often face high mortality rates of the first instar (Grosscurt and Jongsma 1987;Retnakaran and Wright 1987). DFB inhibited naupliar production in Tigriopus californicus (Antia et al 1985) and hatching success in Acartia tonsa (Tester and Costlow 1981).…”

Section: Discussionmentioning

confidence: 99%

“…Although no studies of the effects of DFB on copepods were found which addressed the stage-specific nature of its toxicity, some studies have addressed stage-specific toxicity of other contaminants to insects and other crustaceans. In insects, if the efficacy of DFB differs among different instars, susceptibility generally decreases with increasing age (Grosscurt and Jongsma 1987). Costlow (1977) found that Rhithropanopeus harrisii larvae exposed to the pesticide methoprene were most sensitive following the final zoeal moult to megalopa.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, exposure may not be long enough to elicit effects. In insects, chitin synthesis can resume following a limited exposure period (Grosscurt and Jongsma 1987). Effects may be either the result of a steady build-up of the contaminant to a threshold level in the organism over time or there may be a latency period prior to the manifestation of effects (Harrahy et al 1994).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of diflubenzuron on the maturation and reproductive success of the copepod Eurytemora affinis

et al. 1996

View full text Add to dashboard Cite

: The insect growth regulator diflubenzuron (DFB) may have substantial effects on non-target organisms, especially crustaceans. By targeting the moulting process, DFB would be expected to elicit the most obvious effects on subadult crustaceans which moult frequently. Previous studies in this laboratory have demonstrated acute and chronic effects of DFB on survival and development of nauplii of the estuarine copepod Eurytemora affinis at water concentrations of less than 1 p.p.b. The present study examines the effects on maturation to adulthood and brood production. Effects on brood production were observed at 0.8 p.p.b. DFB in individuals exposed only during the copepodite stages. Significant effects on production of nauplii were documented only in the early exposure to 0.93 p.p.b. DFB. Inability of post-moult copepodites to completely cast exuviae also was documented in the exposed treatments. At salinities of 2, 10 and 15 p.p.t., survival from naupliar to adult stages was significantly reduced at 0.84 p.p.b. and none survived to adulthood at 1.7 p.p.b. These results suggest that DFB has substantial effects on survival and development of E. affinis at a water concentration of less than 1 p.p.b. DFB concentrations exceeding this concentration have been reported from Chesapeake Bay surface waters although there is no current evidence of potentially toxic concentrations overlapping with the known distribution of E. affinis in the bay.

show abstract

“…mussels, nematode egg shells; Arnold et al, 1993). (iii) A zooplankton egg viability technique (Lindley et al, 1998) may also have relevance to benzoylphenylureas: Tester and Costlow (1981) showed that exposure to 1 mg l 1 of diflubenzuron for 12 h reduced the hatch of viable larvae of the copepod Acartia tonsa from >90% to <50%; Grosscurt and Jongsma (1987) reported that fecundity was reduced in some insect species when prematuration stages were treated with diflubenzuron. The specificity of these techniques, and their utilization in a monitoring plan, would require further investigation.…”

Section: Other Potentially Useful Techniquesmentioning

confidence: 99%

Targeted environmental monitoring for the effects of medicines used to treat sea-lice infestation on farmed fish

Davies

Rodger²,

Redshaw

et al. 2001

ICES Journal of Marine Science

View full text Add to dashboard Cite

Farmed Atlantic salmon often suffer from sea-lice infestations, which are commonly controlled by the use of a variety of medicines, and the fate of these medicines has implications for the health of the marine environment around fish farms. The Scottish Environment Protection Agency (SEPA) is responsible for monitoring and protecting the quality of Scottish coastal waters and for regulating discharges which may affect water quality, including releases of medicines from fish farms. We review the utility of established biological effects measurements (biomarkers and bioassays) for monitoring the effects of these medicines. The specificity and suitability of biological effects techniques to the mode of toxic action, metabolism, and environmental fate of the medicines are considered. It is concluded that scope-for-growth measurements in wild and deployed mussels (Mytilus edulis) and lugworm (Arenicola marina) bioassays, in combination with a suite of biomarker techniques, offer the best possibilities.

show abstract

Mode of action and insecticidal properties of diflubenzuron

Cited by 44 publications

References 81 publications

Significance of penetration, excretion, and transovarial uptake to toxicity of three insect growth regulators in predatory lacewing adults

Significance of penetration, excretion, and transovarial uptake to toxicity of three insect growth regulators in predatory lacewing adults

Effect of diflubenzuron on the maturation and reproductive success of the copepod Eurytemora affinis

Targeted environmental monitoring for the effects of medicines used to treat sea-lice infestation on farmed fish

Contact Info

Product

Resources

About