Aquatic toxicology of cypermethrin. II. Fate and biological effects in pond experiments

Crossland, N. O.

doi:10.1016/0166-445x(82)90025-x

Cited by 90 publications

(36 citation statements)

References 6 publications

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“…Although the pyrethroids are extremely toxic under laboratory conditions, in the field their toxicity is significantly reduced, presumably by adsorption of the toxicant to suspended solids (Crossland 1982, internal Shell Develop-ment Company reports as summarized by NRCC 1986, also see review by Smith and Stratton 1986).…”

Section: Fish and Amphibiansmentioning

confidence: 98%

Comparative Toxicology of the Pyrethroid Insecticides

Bradbury¹,

Coats

1989

Reviews of Environmental Contamination and Toxicology

273

142

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Section: Fish and Amphibiansmentioning

confidence: 98%

Comparative Toxicology of the Pyrethroid Insecticides

Bradbury¹,

Coats

1989

Reviews of Environmental Contamination and Toxicology

273

142

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“…Several studies have indicated that pyrethroids are highly toxic to a number of non-target organisms (Carriquiriborde et al 2007;Crossland 1982;Edwards et al 1986;Ronco et al 2008;Saha and Kaviraj 2008). Sublethal effects of pyrethroids on tadpoles have been detected.…”

Section: Introductionmentioning

confidence: 96%

Lethal and sublethal effects of cypermethrin to Hypsiboas pulchellus tadpoles

2010

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The study of the effects of the insecticide cypermethrin (CY) technical grade and its Sherpa® commercial formulation on Hypsiboas pulchellus tadpoles assessing lethality, behavior, growth, and abnormalities under standardized laboratory conditions is reported. Observed behaviors were identified and categorized by means of a ranking system according to the loss of mobility. Results of acute lethal effects indicate higher potency for Sherpa® at this level of assessment. All effects on behavior showed an increasing degree of injury as insecticide concentration increased. Organisms exposed to technical grade CY showed lower body length with respect to controls from 3.44 µg CY/L to higher concentrations, whereas those exposed to Sherpa® exhibited lower growth from 0.83 µg CY/L. Both forms of the tested insecticide caused abnormalities between 0.34 and 4.18 µg CY/L, but 100% of malformed individuals was detected from 34.4 µg CY/L for those exposed to the technical grade CY, and from 8.36 µg CY/L for those exposed to Sherpa®. This study proposes the use of easily identifiable and distinguishable sublethal end-points. The high input loads of CY in natural environments, the detected concentrations in the field, in addition to the low levels of this insecticide required to induce sublethal effects (which could eventually lead to death), allow for the conclusion that the insecticide is a risk factor for amphibians inhabiting agroecosystems.

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“…Maneepitak & Cochard 2014), correlations with natural insecticides may also signal the absence of negative effects by synthetic insecticides. Due to generally higher toxicity, pulses of synthetic insecticides are likely to have considerably stronger effects on aquatic rice field arthropods than pulses of natural insecticides (Crosslands 1982;Mullié et al 1991;Simpson & Roger 1995;Traas et al 1998;Rubach et al 2011). Furthermore, most synthetic chemicals are characterized by a lower degradability and considerably longer residual time than naturally derived chemicals, prolonging their effects on the fields (Roger & Bhuiyan 1995;Shaalan et al 2005;Wang & Shimazu 2006;Extoxnet 2012;Pesticide Action Network North America 2012).…”

mentioning

confidence: 96%

Aquatic faunal abundance and diversity in relation to synthetic and natural pesticide applications in rice fields of Central Thailand

Cochard

Maneepitak

Kumar

2014

International Journal of Biodiversity Science, Ecosystem Servic

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Despite wetland conversion to intensive rice production Central Thailand remains a center for wetland biodiversity in Southern Asia. Fauna inhabiting rice fields (many species perform important ecosystem services) are, however, increasingly threatened by pesticide uses. In Ayutthaya and Ang Thong Provinces 40 conventionally and 31 organically managed farms were visited to investigate how abundance and diversity of aquatic fauna in rice fields relate to pesticide regimes. In the dry and wet seasons fields were surveyed for plankton, aquatic macro-invertebrates, fishes, and waterfowl. Using multivariate statistics pesticide variables and biophysical field parameters (determined in a previous study) were assessed as potential predictors of abundance/diversity of faunal groups. Effects of pesticide regimes on aquatic fauna were nontrivial. Phytoplankton was lowered under exposures to herbicides and natural insecticides. Zooplankton (except amoeboids) was unaffected or increased on pesticide-exposed fields, probably suffering lower predation. Biophysical aspects partly explained abundance/diversity of aquatic insects, but abundance/diversity was generally higher on fields treated with natural rather than synthetic insecticides. Fishes and waterfowl tended to be less abundant on fields exposed to synthetic insecticides and herbicides. Detailed findings may interest agro-ecologists, medical entomologists, and conservation biologists. Further research incorporating wider landscape aspects and including pesticide-free reference sites is suggested.

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Aquatic toxicology of cypermethrin. II. Fate and biological effects in pond experiments

Cited by 90 publications

References 6 publications

Comparative Toxicology of the Pyrethroid Insecticides

Comparative Toxicology of the Pyrethroid Insecticides

Lethal and sublethal effects of cypermethrin to Hypsiboas pulchellus tadpoles

Aquatic faunal abundance and diversity in relation to synthetic and natural pesticide applications in rice fields of Central Thailand

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