Seasonal variations in biomarker responses in the marine blue mussel (Mytilus spp.)

Wiebke Schmidt, Emma Power, Brian Quinn

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

Biomarkers, which can detect changes at the biochemical level, have been used for many years as early warning tools in environmental monitoring. In order to distinguish between natural variability and the potential effects of anthropogenic pollution, it is essential to identify background levels and establish the potential influence of abiotic (season, temperature and salinity) and biotic (gametogenesis) factors. In this study, we examined various biomarkers of stress (glutathione S-transferase (GST)), reproduction (vitellin-like proteins) and damage (lipid peroxidation (LPO) and DNA damage (DNA)) in marine mussels (Mytilus spp.) from a known pristine hybrid zone. Levels of all biomarker expression varied between seasons and appeared to be linked to the reproductive cycle. Oxidative stress in winter, with low GST expression and a higher expression of LPO and DNA damage displayed could be explained by low food availability. These data provide vital baseline information for future ecotoxicological and environmental monitoring studies.
Original languageEnglish
Pages (from-to)50-55
Number of pages6
JournalMarine Pollution Bulletin
Volume74
Issue number1
DOIs
Publication statusPublished - 15 Sep 2013

Keywords

  • Mytilus spp.
  • Biomarker response
  • Seasonality

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