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Effects of Metal Exposure on Associative Learning Behavior in Nematode Caenorhabditis elegans

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Abstract

In the present study, the thermotaxis model was used to evaluate the effects of metal exposure at different concentrations on associative learning behavior in nematodes. The examined nematodes were cultured at 25 or 17°C, and then shifted to 20°C condition. Based on the ability of nematodes to trace the temperature of 20°C, exposure to 10 μM of all examined metals and 2.5 μM Pb and Hg caused significant decrease of associative learning behavior at time intervals of 5 and 18 h; however, exposure to 2.5 μM Cu, Zn, and Ag did not influence associative learning behavior. Moreover, exposure to 2.5 and 10 μM of examined metals did not influence body bend and thermotaxis to cultivation temperature, whereas exposure to 50 μM of examined metals caused significant reduction of body bend and thermotaxis to cultivation temperature. Furthermore, Pb and Hg were the more toxic among the examined metals, with severe toxicity on associative learning behavior, thermotaxis, and locomotion behavior in nematodes.

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Acknowledgements

The strain used in this study was provided by the Caenorhabditis Genetics Center (funded by the NIH National Center for Research Resource, USA). This work was supported by grants from the National Natural Science Foundation of China (No. 30870810) and the Program for New Century Excellent Talents in University.

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Authors and Affiliations

  1. Key Laboratory of Developmental Genes and Human Disease in Ministry of Education, Department of Genetics and Developmental Biology, Southeast University Medical School, Nanjing, 210009, China

    Yanfen Zhang & Dayong Wang

  2. School of Life Science and Technology, China Pharmaceutical University, Nanjing, 210009, China

    Yanfen Zhang & Boping Ye

Authors
  1. Yanfen Zhang
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  2. Boping Ye
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  3. Dayong Wang
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Correspondence to Dayong Wang.

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Zhang, Y., Ye, B. & Wang, D. Effects of Metal Exposure on Associative Learning Behavior in Nematode Caenorhabditis elegans . Arch Environ Contam Toxicol 59, 129–136 (2010). https://doi.org/10.1007/s00244-009-9456-y

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  • DOI: https://doi.org/10.1007/s00244-009-9456-y

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