Cadmium toxicity and accumulation in eggs and alevins of Atlantic salmon Salmo salar
Embryos and alevins of Atlantic salmon (Salmo salar) were exposed to cadmium concentrations of between 0.47 μg Cd/L and 27 mg Cd/L from fertilization to near complete yolk absorption. The most sensitive indicator of cadmium toxicity was the inhibition of growth in alevins, with significant reduction...
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1982
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crcansciencepubl:10.1139/z82-258 2024-04-28T08:13:27+00:00 Cadmium toxicity and accumulation in eggs and alevins of Atlantic salmon Salmo salar Rombough, P. J. Garside, E. T. 1982 http://dx.doi.org/10.1139/z82-258 http://www.nrcresearchpress.com/doi/pdf/10.1139/z82-258 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 60, issue 8, page 2006-2014 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1982 crcansciencepubl https://doi.org/10.1139/z82-258 2024-04-02T06:55:56Z Embryos and alevins of Atlantic salmon (Salmo salar) were exposed to cadmium concentrations of between 0.47 μg Cd/L and 27 mg Cd/L from fertilization to near complete yolk absorption. The most sensitive indicator of cadmium toxicity was the inhibition of growth in alevins, with significant reduction occurring in 0.47 μg Cd/L. The LC 50 for the interval from fertilization to viable hatch was estimated to lie between 300 and 800 μg Cd/L. Newly hatched alevins had a 24-day LC 50 of between 1.5 and 2.7 mg Cd/L. Sensitivity increased sharply in late alevins and significant mortality was recorded in concentrations as low as 8.2 μg Cd/L. Cadmium uptake by eggs was rapid, with dose-dependent saturation levels reached within 24 h and maintained until hatch. Although the total cadmium content of eggs increased with ambient concentration, the degree of bioaccumulation declined. The cadmium contents of newly hatched alevins were much lower but directly proportional to those of eggs. Uptake by alevins was logarithmic, independent of ambient concentration above about 1 μg Cd/L, and did not reach equilibrium during the exposure period (46 days). Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing Canadian Journal of Zoology 60 8 2006 2014 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Rombough, P. J. Garside, E. T. Cadmium toxicity and accumulation in eggs and alevins of Atlantic salmon Salmo salar |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Embryos and alevins of Atlantic salmon (Salmo salar) were exposed to cadmium concentrations of between 0.47 μg Cd/L and 27 mg Cd/L from fertilization to near complete yolk absorption. The most sensitive indicator of cadmium toxicity was the inhibition of growth in alevins, with significant reduction occurring in 0.47 μg Cd/L. The LC 50 for the interval from fertilization to viable hatch was estimated to lie between 300 and 800 μg Cd/L. Newly hatched alevins had a 24-day LC 50 of between 1.5 and 2.7 mg Cd/L. Sensitivity increased sharply in late alevins and significant mortality was recorded in concentrations as low as 8.2 μg Cd/L. Cadmium uptake by eggs was rapid, with dose-dependent saturation levels reached within 24 h and maintained until hatch. Although the total cadmium content of eggs increased with ambient concentration, the degree of bioaccumulation declined. The cadmium contents of newly hatched alevins were much lower but directly proportional to those of eggs. Uptake by alevins was logarithmic, independent of ambient concentration above about 1 μg Cd/L, and did not reach equilibrium during the exposure period (46 days). |
format |
Article in Journal/Newspaper |
author |
Rombough, P. J. Garside, E. T. |
author_facet |
Rombough, P. J. Garside, E. T. |
author_sort |
Rombough, P. J. |
title |
Cadmium toxicity and accumulation in eggs and alevins of Atlantic salmon Salmo salar |
title_short |
Cadmium toxicity and accumulation in eggs and alevins of Atlantic salmon Salmo salar |
title_full |
Cadmium toxicity and accumulation in eggs and alevins of Atlantic salmon Salmo salar |
title_fullStr |
Cadmium toxicity and accumulation in eggs and alevins of Atlantic salmon Salmo salar |
title_full_unstemmed |
Cadmium toxicity and accumulation in eggs and alevins of Atlantic salmon Salmo salar |
title_sort |
cadmium toxicity and accumulation in eggs and alevins of atlantic salmon salmo salar |
publisher |
Canadian Science Publishing |
publishDate |
1982 |
url |
http://dx.doi.org/10.1139/z82-258 http://www.nrcresearchpress.com/doi/pdf/10.1139/z82-258 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Zoology volume 60, issue 8, page 2006-2014 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z82-258 |
container_title |
Canadian Journal of Zoology |
container_volume |
60 |
container_issue |
8 |
container_start_page |
2006 |
op_container_end_page |
2014 |
_version_ |
1797579947838013440 |