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Variation in toxicity of a current-use insecticide among resurrected Daphnia pulicaria genotypes.

Byline: Adam M. Simpson (1), Punidan D. Jeyasingh (1), Jason B. Belden (1) Keywords: Chlorpyrifos; Eutrophication; Evolutionary toxicology; Genetic variation; Microevolution; Resurrection ecology Abstract: This study examined how genotypes of Daphnia pulicaria from a single population, separated by... Full description

Journal Title: Ecotoxicology (London England), April 2015, Vol.24(3), pp.488-496
Main Author: Simpson, Adam M
Other Authors: Jeyasingh, Punidan D , Belden, Jason B
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1573-3017 ; DOI: 10.1007/s10646-014-1397-1
Link: http://search.proquest.com/docview/1662640726/?pq-origsite=primo
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title: Variation in toxicity of a current-use insecticide among resurrected Daphnia pulicaria genotypes.
format: Article
creator:
  • Simpson, Adam M
  • Jeyasingh, Punidan D
  • Belden, Jason B
subjects:
  • Animals–Toxicity
  • Biological Evolution–Drug Effects
  • Chlorpyrifos–Genetics
  • Daphnia–Toxicity
  • Dose-Response Relationship, Drug–Toxicity
  • Genotype–Toxicity
  • Insecticides–Toxicity
  • Lethal Dose 50–Toxicity
  • Minnesota–Toxicity
  • Time Factors–Toxicity
  • Insecticides
  • Chlorpyrifos
ispartof: Ecotoxicology (London, England), April 2015, Vol.24(3), pp.488-496
description: Byline: Adam M. Simpson (1), Punidan D. Jeyasingh (1), Jason B. Belden (1) Keywords: Chlorpyrifos; Eutrophication; Evolutionary toxicology; Genetic variation; Microevolution; Resurrection ecology Abstract: 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. Author Affiliation: (1) Department of Zoology, Oklahoma State University, 501 Life Sciences West, Stillwater, OK, 74078, USA Article History: Registration Date: 27/11/2014 Accepted Date: 27/11/2014 Online Date: 07/12/2014
language: eng
source:
identifier: E-ISSN: 1573-3017 ; DOI: 10.1007/s10646-014-1397-1
fulltext: fulltext
issn:
  • 15733017
  • 1573-3017
url: Link


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titleVariation in toxicity of a current-use insecticide among resurrected Daphnia pulicaria genotypes.
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subjectAnimals–Toxicity ; Biological Evolution–Drug Effects ; Chlorpyrifos–Genetics ; Daphnia–Toxicity ; Dose-Response Relationship, Drug–Toxicity ; Genotype–Toxicity ; Insecticides–Toxicity ; Lethal Dose 50–Toxicity ; Minnesota–Toxicity ; Time Factors–Toxicity ; Insecticides ; Chlorpyrifos
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descriptionByline: Adam M. Simpson (1), Punidan D. Jeyasingh (1), Jason B. Belden (1) Keywords: Chlorpyrifos; Eutrophication; Evolutionary toxicology; Genetic variation; Microevolution; Resurrection ecology Abstract: 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. Author Affiliation: (1) Department of Zoology, Oklahoma State University, 501 Life Sciences West, Stillwater, OK, 74078, USA Article History: Registration Date: 27/11/2014 Accepted Date: 27/11/2014 Online Date: 07/12/2014
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