Ecological Risk Characterization for the Synthetic Pyrethroids

Shamim, Mah; Hoffmann, Michael D.; Melendez, Jose; Ruhman, Mohammed A.

doi:10.1021/bk-2008-0991.ch013

Cited by 11 publications

(4 citation statements)

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“…Bifenthrin sediment data were obtained from sampling conducted during the 2001 to 2019 time period. In the analysis presented below, non-detected concentrations were assigned a value of 1 2 the detection limit as recommended by other investigators [9,10]. A measurement that is defined as non-detected does not imply that there is some concentration of bifenthrin present.…”

Section: Methodsmentioning

confidence: 99%

“…During the past three decades synthetic pyrethroids have been introduced for a variety of insecticidal uses [1]. These insecticides are registered for use on a variety of crops, home and garden, landscaping, nurseries, structural sites, vector control, and golf courses [2].…”

Section: Introductionmentioning

confidence: 99%

“…Sites with significant trends are in bold type. Non-detected concentrations assigned a value of1 2 the detection limit. b Data for regression from Hall et al[8].…”

mentioning

confidence: 99%

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An Eighteen Year Temporal Trends Analysis of Bifenthrin Sediment Concentrations in California Waterbodies

Hall

Anderson

2020

Water

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The goal of this study was to conduct long-term temporal trends analysis of bifenthrin sediment concentrations for measurements conducted from 2001 to 2019 in California waterbodies. Long-term data sites defined as spanning 6 years were available for 143 sites but 17 of these sites were excluded from long analysis because all measurements were below the level of detection. At least one site used in the trends analysis was located in all nine California Water Board Regions thus providing a representative statewide spatial scale. Twenty of the 126 long-term California sediment sites showed a statistically significant downward trend in bifenthrin concentrations while nine sites showed a statistically significant upward trend. Declining bifenthrin sediment concentrations were most evident in urban waterbodies when compared with agricultural dominated waterbodies. An analysis of bifenthrin long-term sediment trends by waterbody with at least three sites showed a significant trend for only one residential/urban stream and this trend was declining. In summary, the trends analysis of bifenthrin sediment concentrations does show a compelling case for declining concentrations in the State of California during an 18-year time period that includes a time period before and after the urban use of bifenthrin was further regulated.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Eighteen Year Temporal Trends Analysis of Bifenthrin Sediment Concentrations in California Waterbodies

Hall

Anderson

2020

Water

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“…The pyrethroids tested included lambda‐cyhalothrin, permethrin, cypermethrin, deltamethrin, and phenothrin (sumithrin). Selection of these chemicals was based on their frequent and diverse (agriculture, mosquito control, and residential pest control) applications in coastal areas, and because they represent different chemical structures (permethrin and phenothrin are Type I pyrethroids; cypermethrin, deltamethrin and lambda‐cyhalothrin are Type II pyrethroids) and a range of chemical properties (water solubility values of 0.0002–0.0097 mg/L; log Kow values of 4.53–7.0 (Shamim et al, ; USEPA, )). Total California synthetic pyrethroid sales in 2004 were approximately 1.4 million pounds active ingredient (AI) (Spurlock and Lee, ).…”

Section: Introductionmentioning

confidence: 99%

Comparative toxicity of pyrethroid insecticides to two estuarine crustacean species, Americamysis bahia and Palaemonetes pugio

DeLorenzo

Key

Chung

et al. 2013

Environmental Toxicology

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Pyrethroid insecticides are widely used on agricultural crops, as well as for nurseries, golf courses, urban structural and landscaping sites, residential home and garden pest control, and mosquito abatement. Evaluation of sensitive marine and estuarine species is essential for the development of toxicity testing and risk-assessment protocols. Two estuarine crustacean species, Americamysis bahia (mysids) and Palaemonetes pugio (grass shrimp), were tested with the commonly used pyrethroid compounds, lambda-cyhalothrin, permethrin, cypermethrin, deltamethrin, and phenothrin. Sensitivities of adult and larval grass shrimp and 7-day-old mysids were compared using standard 96-h LC50 bioassay protocols. Adult and larval grass shrimp were more sensitive than the mysids to all the pyrethroids tested. Larval grass shrimp were approximately 18-fold more sensitive to lambda-cyhalothrin than the mysids. Larval grass shrimp were similar in sensitivity to adult grass shrimp for cypermethrin, deltamethrin, and phenothrin, but larvae were approximately twice as sensitive to lambda-cyhalothrin and permethrin as adult shrimp. Acute toxicity to estuarine crustaceans occurred at low nanogram per liter concentrations of some pyrethroids, illustrating the need for careful regulation of the use of pyrethroid compounds in the coastal zone.

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Environmental Behavior of Synthetic Pyrethroids

Katagi

2011

Topics in Current Chemistry

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New experimental approaches together with recent progress in spectroscopic technologies have given useful information to understand better the environmental fate of synthetic pyrethroids. The successive transformation of intermediate free radicals by using spin-trapping reagents and fluorophores enables their easier detection in aqueous photolysis. Chiral chromatographic analyses have shown stereo-selective metabolism of pyrethroids in soil. The knowledge on relevant enzymes in soil and plant being involved in hydrolysis, oxidation, and glucose conjugation of pyrethroids has been accumulated. Utilization of either iron-porphyrin with an oxidant or isolated leaf cells as model systems can give more information on metabolism of pyrethroids.

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Ecological Risk Characterization for the Synthetic Pyrethroids

Cited by 11 publications

References 1 publication

An Eighteen Year Temporal Trends Analysis of Bifenthrin Sediment Concentrations in California Waterbodies

An Eighteen Year Temporal Trends Analysis of Bifenthrin Sediment Concentrations in California Waterbodies

Comparative toxicity of pyrethroid insecticides to two estuarine crustacean species, Americamysis bahia and Palaemonetes pugio

Environmental Behavior of Synthetic Pyrethroids

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