Tags

Type your tag names separated by a space and hit enter

Metal accumulation and metallothionein in two populations of brown trout, Salmo trutta, exposed to different natural water environments during a run-off episode.
Aquat Toxicol. 2000 Oct 01; 50(4):301-316.AT

Abstract

Cd, Cu and Zn concentrations were measured in ambient water as well as in gills, liver and kidney tissues of two natural populations of brown trout (Salmo trutta) during a run-off episode in two rivers with different metal compositions due to mining pollution. Metallothionein (MT) was also measured in these tissues. The two rivers, Rugla (Cu contaminated) and Naustebekken (Cd and Zn contaminated), are located in two neighboring drainage basins separated by the topographic divide near the city of Røros in the County of Sør-Trøndelag, Norway. In Rugla, the Cu concentration increased from 15 µg/l at the low water level to 41 µg/l during the run-off episode. In Naustebekken, corresponding values for Cd were 90-170 ng/l and those for Zn were 49-91 µg/l. Gill concentrations of Cu and Cd/Zn MT in both populations of native trout clearly reflect the presence of these metals in the rivers during the run-off, in accordance with the hypothesis of protection caused by MT induction. When Rugla trout were transferred to Naustebekken and vice versa, both the amounts of MT itself and the Cu contents reflected the concentration of this metal in the new environment, indicating that MT induction also protects against acutely increased metal levels. The measured levels of MT in both native and transferred trout can account for all the Cd present in the tissues, but not for all of the Cu and Zn. The capacity of MT to regulate Cd and Cu in the trout populations in their natural habitat therefore seems clearly present. Our data also indicate that the MT I and II isoforms may bind metals selectively.

Authors+Show Affiliations

Department of Zoology, Norwegian University of Science and Technology, N-7491, Trondheim, NorwayNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

10967393

Citation

Olsvik, PA, et al. "Metal Accumulation and Metallothionein in Two Populations of Brown Trout, Salmo Trutta, Exposed to Different Natural Water Environments During a Run-off Episode." Aquatic Toxicology (Amsterdam, Netherlands), vol. 50, no. 4, 2000, pp. 301-316.
Olsvik PA, Gundersen P, Andersen RA, et al. Metal accumulation and metallothionein in two populations of brown trout, Salmo trutta, exposed to different natural water environments during a run-off episode. Aquat Toxicol. 2000;50(4):301-316.
Olsvik, P. A., Gundersen, P., Andersen, R. A., & Zachariassen, K. E. (2000). Metal accumulation and metallothionein in two populations of brown trout, Salmo trutta, exposed to different natural water environments during a run-off episode. Aquatic Toxicology (Amsterdam, Netherlands), 50(4), 301-316.
Olsvik PA, et al. Metal Accumulation and Metallothionein in Two Populations of Brown Trout, Salmo Trutta, Exposed to Different Natural Water Environments During a Run-off Episode. Aquat Toxicol. 2000 Oct 1;50(4):301-316. PubMed PMID: 10967393.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Metal accumulation and metallothionein in two populations of brown trout, Salmo trutta, exposed to different natural water environments during a run-off episode. AU - Olsvik,PA, AU - Gundersen,P, AU - Andersen,RA, AU - Zachariassen,KE, PY - 2000/9/1/pubmed PY - 2000/9/1/medline PY - 2000/9/1/entrez SP - 301 EP - 316 JF - Aquatic toxicology (Amsterdam, Netherlands) JO - Aquat Toxicol VL - 50 IS - 4 N2 - Cd, Cu and Zn concentrations were measured in ambient water as well as in gills, liver and kidney tissues of two natural populations of brown trout (Salmo trutta) during a run-off episode in two rivers with different metal compositions due to mining pollution. Metallothionein (MT) was also measured in these tissues. The two rivers, Rugla (Cu contaminated) and Naustebekken (Cd and Zn contaminated), are located in two neighboring drainage basins separated by the topographic divide near the city of Røros in the County of Sør-Trøndelag, Norway. In Rugla, the Cu concentration increased from 15 µg/l at the low water level to 41 µg/l during the run-off episode. In Naustebekken, corresponding values for Cd were 90-170 ng/l and those for Zn were 49-91 µg/l. Gill concentrations of Cu and Cd/Zn MT in both populations of native trout clearly reflect the presence of these metals in the rivers during the run-off, in accordance with the hypothesis of protection caused by MT induction. When Rugla trout were transferred to Naustebekken and vice versa, both the amounts of MT itself and the Cu contents reflected the concentration of this metal in the new environment, indicating that MT induction also protects against acutely increased metal levels. The measured levels of MT in both native and transferred trout can account for all the Cd present in the tissues, but not for all of the Cu and Zn. The capacity of MT to regulate Cd and Cu in the trout populations in their natural habitat therefore seems clearly present. Our data also indicate that the MT I and II isoforms may bind metals selectively. SN - 1879-1514 UR - https://www.unboundmedicine.com/medline/citation/10967393/Metal_accumulation_and_metallothionein_in_two_populations_of_brown_trout_Salmo_trutta_exposed_to_different_natural_water_environments_during_a_run_off_episode_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0166445X00000941 DB - PRIME DP - Unbound Medicine ER -
Try the Free App:
Prime PubMed app for iOS iPhone iPad
Prime PubMed app for Android
Prime PubMed is provided
free to individuals by:
Unbound Medicine.