The effects of temperature and dissolved oxygen on antioxidant defences and oxidative damage in the fathead minnow Pimephales promelas

Fathead minnows Pimephales promelas maintained at 25° C for 6 h had significantly higher superoxide dismutase (SOD) activity than fish maintained at 7 or 32° C, but hypoxic conditions (3 mg l−1 O2) over the same time period did not affect SOD activity. Fish in better body condition (length‐adjusted...

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Veröffentlicht in:	Journal of fish biology 2013-03, Vol.82 (3), p.1086-1092
Hauptverfasser:	Clotfelter, E. D., Lapidus, S. J. H., Brown, A. C.
Format:	Artikel
Sprache:	eng
Schlagworte:	acrolein Acrolein - analysis Agnatha. Pisces Animal and plant ecology Animal, plant and microbial ecology Animals Antioxidants - metabolism Biological and medical sciences Biomarkers condition-dependent Cyprinidae - physiology Female Fresh water ecosystems Fundamental and applied biological sciences. Psychology hypoxia Hypoxia - physiopathology Liver - metabolism Liver - physiopathology Male Oxidative Stress Oxygen - metabolism reactive oxygen species superoxide dismutase Superoxide Dismutase - metabolism Synecology Temperature Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
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Zusammenfassung:	Fathead minnows Pimephales promelas maintained at 25° C for 6 h had significantly higher superoxide dismutase (SOD) activity than fish maintained at 7 or 32° C, but hypoxic conditions (3 mg l−1 O2) over the same time period did not affect SOD activity. Fish in better body condition (length‐adjusted mass) had higher SOD activity. In a separate experiment, P. promelas maintained at three water temperatures (7, 23 and 32° C) for 31 days did not differ in liver acrolein, a biomarker of oxidative stress.
ISSN:	0022-1112 1095-8649
DOI:	10.1111/jfb.12050