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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | McRae, Nicole K. Gaw, Sally Glover, Chris N. |
| Description | Author Affiliation: McRae NK ( University of Canterbury, Private Bag 4800, Christchurch, New Zealand. Electronic address: nicole.mcrae@pg.canterbury.ac.nz.); Gaw S ( University of Canterbury, Private Bag 4800, Christchurch, New Zealand. Electronic address: sally.gaw@canterbury.ac.nz.); Glover CN ( University of Canterbury, Private Bag 4800, Christchurch, New Zealand) |
| Abstract | Zinc (Zn) is an essential metal, which is ubiquitous in aquatic environments occurring both naturally, and through anthropogenic inputs. This study investigated impacts of sub-lethal Zn exposure in the galaxiid fish Galaxias maculatus. Known as inanga, this amphidromous fish is widespread throughout the Southern hemisphere, but to date almost nothing is known regarding its sensitivity to elevated environmental metals. Fish were exposed to environmentally-relevant concentrations of Zn (control, 8, 270 and 1000µgL(-1)) over 96h. End-points measured included those relating to ionoregulatory disturbance (whole body calcium and sodium influx), oxygen consumption (respirometry), oxidative stress (catalase activity and lipid peroxidation) and whole body accumulation of Zn. Zn exposure caused increases in catalase activity and lipid peroxidation, but only at the highest exposure level tested. Zn also significantly inhibited calcium influx, but stimulated sodium influx, at 1000µgL(-1). The sub-lethal changes induced by Zn exposure in inanga appear to be conserved relative to other, better-studied species. These data are the first to explore the sensitivity of juvenile galaxiid fish to Zn, information that will be critical to ensuring adequate environmental protection of this important species. |
| File Format | HTM / HTML |
| ISSN | 15320456 |
| Volume Number | 179 |
| Journal | Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2016-01-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Toxicology Discipline Pharmacology Metals, Heavy Poisoning Metabolism Water Pollutants, Chemical Toxicity Zinc Animals Dose-response Relationship, Drug Osmeriformes Oxygen Consumption Drug Effects Physiology Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Physiology Health, Toxicology and Mutagenesis Medicine Aquatic Science Biochemistry Toxicology Animal Science and Zoology |
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