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231224s2013 xx |||||o 00| ||eng c |
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|a 10.1007/s10646-013-1051-3
|2 doi
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|a pubmed24n0751.xml
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|a (DE-627)NLM225276348
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|a (NLM)23435687
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Martínez Morcillo, S
|e verfasserin
|4 aut
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| 245 |
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|a Avoidance behaviour response and esterase inhibition in the earthworm, Lumbricus terrestris, after exposure to chlorpyrifos
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|c 2013
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 29.10.2013
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|a Date Revised 21.10.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a The avoidance response of earthworms to polluted soils has been standardised using a simple and low-cost test, which facilitates soil toxicity screening. In this study, the avoidance response of Lumbricus terrestris was quantified in chlorpyrifos-spiked soils, depending on the pesticide concentration and exposure duration. The inhibition of acetylcholinesterase (AChE) and carboxylesterase (CbE) activities was also determined as indirect measures of pesticide bioavailability. The effects of different chlorpyrifos concentrations were examined in a standardised test (two-chamber system) with 0.6, 3 and 15 mg/kg chlorpyrifos. A modification of the test involved a pre-exposure step (24, 48 or 72 h) in soils spiked with 15 mg/kg. In both protocols, earthworms were unable to avoid the contaminated soils. However, the esterase activities showed that all earthworms were exposed to chlorpyrifos. Acetylcholinesterase activity did not change in earthworms in the standardised behavioural test (0.58 ± 0.20 U/mg protein, mean ± SD; n = 72), whereas the CbE activity was significantly inhibited (62-87 % inhibition) in earthworms exposed to 3 and 15 mg/kg. In the modified test, earthworms had greatly inhibited AChE activity (0.088 ± 0.034 U/mg protein, n = 72), which was supported by reactivation of the inhibited enzyme activity in the presence of pralidoxime (2-PAM). Similarly, the CbE activity was significantly inhibited in earthworms with all treatments. This study suggests that the avoidance behaviour test for organophosphorus-contaminated soils could be supported by specific biomarkers to facilitate a better understanding of pesticide exposure and toxicity during this test
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Cholinesterase Inhibitors
|2 NLM
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|a Cholinesterase Reactivators
|2 NLM
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|a Pesticides
|2 NLM
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|a Pralidoxime Compounds
|2 NLM
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|a Soil Pollutants
|2 NLM
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|a Carboxylesterase
|2 NLM
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| 650 |
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|a EC 3.1.1.1
|2 NLM
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| 650 |
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|a Acetylcholinesterase
|2 NLM
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| 650 |
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|a EC 3.1.1.7
|2 NLM
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| 650 |
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|a Chlorpyrifos
|2 NLM
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| 650 |
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|a JCS58I644W
|2 NLM
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| 650 |
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|a pralidoxime
|2 NLM
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| 650 |
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|a P7MU9UTP52
|2 NLM
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| 700 |
1 |
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|a Yela, J L
|e verfasserin
|4 aut
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1 |
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|a Capowiez, Y
|e verfasserin
|4 aut
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| 700 |
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|a Mazzia, C
|e verfasserin
|4 aut
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| 700 |
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|a Rault, M
|e verfasserin
|4 aut
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| 700 |
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|a Sanchez-Hernandez, Juan C
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Ecotoxicology (London, England)
|d 1992
|g 22(2013), 4 vom: 04. Mai, Seite 597-607
|w (DE-627)NLM098212214
|x 1573-3017
|7 nnns
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| 773 |
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|g volume:22
|g year:2013
|g number:4
|g day:04
|g month:05
|g pages:597-607
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|u http://dx.doi.org/10.1007/s10646-013-1051-3
|3 Volltext
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