Effects of Columbia River water on early life-stages of white sturgeon (Acipenser transmontanus).
Identifieur interne : 000208 ( Main/Exploration ); précédent : 000207; suivant : 000209Effects of Columbia River water on early life-stages of white sturgeon (Acipenser transmontanus).
Auteurs : Amber R. Tompsett [Canada] ; David W. Vardy [Canada] ; Eric Higley [Canada] ; Jon A. Doering [Canada] ; Marcie Allan [Canada] ; Karsten Liber [Canada] ; John P. Giesy [République populaire de Chine] ; Markus Hecker [Canada]Source :
- Ecotoxicology and environmental safety [ 1090-2414 ] ; 2014.
Descripteurs français
- Wicri :
- geographic : Canada.
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : Metals, Water Pollutants, Chemical.
- chemical , toxicity : Metals, Water Pollutants, Chemical.
- geographic : Canada.
- chemistry : Rivers.
- drug effects : Body Size.
- physiology : Fishes.
- Animals, Survival Analysis.
Abstract
The white sturgeon (Acipenser transmontanus) population that resides in the Columbia River in British Columbia (BC), Canada, has suffered recruitment failures for more than three decades. During the summers of 2008 and 2009, studies were performed to determine whether exposure to water downstream of a metal smelter in Trail, BC affected survival or growth of early life-stages of white sturgeon through 60+ days post-fertilization (dpf). In both years, there were no significant differences in survival of fish that were exposed to water from downstream compared to water from upstream of the smelter. At 20-21dpf, average mortality was 2.4 percent and 12 percent in upstream water for 2008 and 2009, respectively, which was similar to the average mortality of 3.8 percent and 7.2 percent in downstream water for 2008 and 2009, respectively. Relatively great mortality after 20-21dpf complicated analysis of the subchronic exposure, but use of a survival analysis indicated that the average fish died at 25-29dpf, regardless of whether the water to which they were exposed came from upstream or downstream of the smelter. In addition, measured concentrations of metals in river water were less than the threshold for adverse effects on early life stages of white sturgeon. Based upon these analyses, it is not likely that current concentrations of metals in the Columbia River in southern BC are adversely affecting survival of early life stages of white sturgeon larvae.
DOI: 10.1016/j.ecoenv.2013.12.004
PubMed: 24507122
Affiliations:
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During the summers of 2008 and 2009, studies were performed to determine whether exposure to water downstream of a metal smelter in Trail, BC affected survival or growth of early life-stages of white sturgeon through 60+ days post-fertilization (dpf). In both years, there were no significant differences in survival of fish that were exposed to water from downstream compared to water from upstream of the smelter. At 20-21dpf, average mortality was 2.4 percent and 12 percent in upstream water for 2008 and 2009, respectively, which was similar to the average mortality of 3.8 percent and 7.2 percent in downstream water for 2008 and 2009, respectively. Relatively great mortality after 20-21dpf complicated analysis of the subchronic exposure, but use of a survival analysis indicated that the average fish died at 25-29dpf, regardless of whether the water to which they were exposed came from upstream or downstream of the smelter. In addition, measured concentrations of metals in river water were less than the threshold for adverse effects on early life stages of white sturgeon. Based upon these analyses, it is not likely that current concentrations of metals in the Columbia River in southern BC are adversely affecting survival of early life stages of white sturgeon larvae.</div></front></TEI><affiliations><list><country><li>Canada</li><li>République populaire de Chine</li></country></list><tree><country name="Canada"><noRegion><name sortKey="Tompsett, Amber R" sort="Tompsett, Amber R" uniqKey="Tompsett A" first="Amber R" last="Tompsett">Amber R. Tompsett</name></noRegion><name sortKey="Allan, Marcie" sort="Allan, Marcie" uniqKey="Allan M" first="Marcie" last="Allan">Marcie Allan</name><name sortKey="Doering, Jon A" sort="Doering, Jon A" uniqKey="Doering J" first="Jon A" last="Doering">Jon A. Doering</name><name sortKey="Hecker, Markus" sort="Hecker, Markus" uniqKey="Hecker M" first="Markus" last="Hecker">Markus Hecker</name><name sortKey="Higley, Eric" sort="Higley, Eric" uniqKey="Higley E" first="Eric" last="Higley">Eric Higley</name><name sortKey="Liber, Karsten" sort="Liber, Karsten" uniqKey="Liber K" first="Karsten" last="Liber">Karsten Liber</name><name sortKey="Vardy, David W" sort="Vardy, David W" uniqKey="Vardy D" first="David W" last="Vardy">David W. Vardy</name></country><country name="République populaire de Chine"><noRegion><name sortKey="Giesy, John P" sort="Giesy, John P" uniqKey="Giesy J" first="John P" last="Giesy">John P. Giesy</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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