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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1007/s10646-014-1397-1
|2 doi
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|a pubmed24n0814.xml
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|e rakwb
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|a eng
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|a Simpson, Adam M
|e verfasserin
|4 aut
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| 245 |
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|a Variation in toxicity of a current-use insecticide among resurrected Daphnia pulicaria genotypes
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|c 2015
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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
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|2 rdacarrier
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|a Date Completed 06.11.2015
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a This study examined how genotypes of Daphnia pulicaria from a single population, separated by thousands of generations of evolution in the wild, differ in their sensitivity to a novel anthropogenic stressor. These genotypes were resurrected from preserved resting eggs isolated from sediments belonging to three time periods: 2002-2008, 1967-1977, and 1301-1646 A.D. Toxicity of the organophosphate insecticide chlorpyrifos was determined through a series of acute toxicity tests. There was a significant dose-response effect in all genotypes studied. Moreover, significant variation in toxicity among genotypes within each time period was detected. Importantly, a significant effect of time period on sensitivity to chlorpyrifos was found. Analysis of the median effect concentrations (EC50s) for genotypes within each time period indicated that the 1301-1646 genotypes were 2.7 times more sensitive than the 1967-1977 genotypes. This trend may be partially explained by microevolutionary shifts in response to cultural eutrophication
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Insecticides
|2 NLM
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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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| 700 |
1 |
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|a Jeyasingh, Punidan D
|e verfasserin
|4 aut
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|a Belden, Jason B
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Ecotoxicology (London, England)
|d 1992
|g 24(2015), 3 vom: 27. Apr., Seite 488-96
|w (DE-627)NLM098212214
|x 1573-3017
|7 nnns
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| 773 |
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|g volume:24
|g year:2015
|g number:3
|g day:27
|g month:04
|g pages:488-96
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|u http://dx.doi.org/10.1007/s10646-014-1397-1
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