Time-Dependent Responses of Oxidative Stress, Growth, and Reproduction of Daphnia magna Under Thermal Stress

Hyungjoon Im, Palas Samanta, Joorim Na, Jinho Jung

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The present study evaluated the effects of temperature (20 and 25°C) on the oxidative stress responses and life-history traits of Daphnia magna depending on exposure time. Daphnid exposed to an elevated temperature for 21 days had notably higher activities of the antioxidant enzymes superoxide dismutase, catalase, glutathione peroxidase, and glutathione S-transferase while the enzyme activities did not differ significantly between the two temperature groups for daphnid exposed for 5 days. However, the results of body length were opposite where only the 5 days exposure daphnid had significantly longer bodies at 25°C compared to those at 20°C (p < 0.05). Despite the earlier reproduction for daphnids at 25°C, the cumulative number of offspring per female for 21 days was not significantly different from those at 20°C (p < 0.05). These findings suggest that D. magna undergo strategic changes in oxidative stress response, growth, and reproduction throughout the exposure period of 21 days.

Original languageEnglish
Pages (from-to)817-821
Number of pages5
JournalBulletin of Environmental Contamination and Toxicology
Volume102
Issue number6
DOIs
Publication statusPublished - 2019 Jun 15

Keywords

  • Antioxidant enzyme
  • Body length
  • Fecundity
  • Water flea

ASJC Scopus subject areas

  • Toxicology
  • Pollution
  • Health, Toxicology and Mutagenesis

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