Kinetic characteristics of the sodium uptake mechanism during the development of embryos and fry of Atlantic salmon, Salmo salar L., in an improved water quality
The kinetics of active sodium uptake in dechorionated embryos, yolk‐sac fry and start‐feed fry of Atlantic salmon were compared in two groups reared either in low conductivity, untreated, river water (conductivity ∼ 46 μS cm −1 , pH 5.75), or in ‘improved’ river water buffered with sea water (conduc...
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1989
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crwiley:10.1111/j.1095-8649.1989.tb03037.x 2024-06-02T08:03:26+00:00 Kinetic characteristics of the sodium uptake mechanism during the development of embryos and fry of Atlantic salmon, Salmo salar L., in an improved water quality McWilliams, P. G. Shephard, K. L. 1989 http://dx.doi.org/10.1111/j.1095-8649.1989.tb03037.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1989.tb03037.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1989.tb03037.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 35, issue 6, page 855-868 ISSN 0022-1112 1095-8649 journal-article 1989 crwiley https://doi.org/10.1111/j.1095-8649.1989.tb03037.x 2024-05-03T11:15:15Z The kinetics of active sodium uptake in dechorionated embryos, yolk‐sac fry and start‐feed fry of Atlantic salmon were compared in two groups reared either in low conductivity, untreated, river water (conductivity ∼ 46 μS cm −1 , pH 5.75), or in ‘improved’ river water buffered with sea water (conductivity ∼2200 μS cm 1 , pH 6.56), the latter treatment often being used in commercial hatcheries to avoid problems associated with periodic acidification. Maximal transport rate ( V max ) increased during development in both groups but was always significantly higher in embryos and fry maintained in untreated river water. Values for K m were not seen to vary during development up to 12 weeks after hatching and were not significantly different between groups, or from values reported for adult Atlantic salmon in fresh water. The results are discussed with respect to the influence of Na + concentrations in the perivitelline fluid of developing eggs and in the external medium surrounding fry on V max and K m . The ability of fry reared entirely in buffered river water to maintain sodium balance following transfer to untreated river water is also considered. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Fish Biology 35 6 855 868 |
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Open Polar |
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Wiley Online Library |
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crwiley |
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English |
description |
The kinetics of active sodium uptake in dechorionated embryos, yolk‐sac fry and start‐feed fry of Atlantic salmon were compared in two groups reared either in low conductivity, untreated, river water (conductivity ∼ 46 μS cm −1 , pH 5.75), or in ‘improved’ river water buffered with sea water (conductivity ∼2200 μS cm 1 , pH 6.56), the latter treatment often being used in commercial hatcheries to avoid problems associated with periodic acidification. Maximal transport rate ( V max ) increased during development in both groups but was always significantly higher in embryos and fry maintained in untreated river water. Values for K m were not seen to vary during development up to 12 weeks after hatching and were not significantly different between groups, or from values reported for adult Atlantic salmon in fresh water. The results are discussed with respect to the influence of Na + concentrations in the perivitelline fluid of developing eggs and in the external medium surrounding fry on V max and K m . The ability of fry reared entirely in buffered river water to maintain sodium balance following transfer to untreated river water is also considered. |
format |
Article in Journal/Newspaper |
author |
McWilliams, P. G. Shephard, K. L. |
spellingShingle |
McWilliams, P. G. Shephard, K. L. Kinetic characteristics of the sodium uptake mechanism during the development of embryos and fry of Atlantic salmon, Salmo salar L., in an improved water quality |
author_facet |
McWilliams, P. G. Shephard, K. L. |
author_sort |
McWilliams, P. G. |
title |
Kinetic characteristics of the sodium uptake mechanism during the development of embryos and fry of Atlantic salmon, Salmo salar L., in an improved water quality |
title_short |
Kinetic characteristics of the sodium uptake mechanism during the development of embryos and fry of Atlantic salmon, Salmo salar L., in an improved water quality |
title_full |
Kinetic characteristics of the sodium uptake mechanism during the development of embryos and fry of Atlantic salmon, Salmo salar L., in an improved water quality |
title_fullStr |
Kinetic characteristics of the sodium uptake mechanism during the development of embryos and fry of Atlantic salmon, Salmo salar L., in an improved water quality |
title_full_unstemmed |
Kinetic characteristics of the sodium uptake mechanism during the development of embryos and fry of Atlantic salmon, Salmo salar L., in an improved water quality |
title_sort |
kinetic characteristics of the sodium uptake mechanism during the development of embryos and fry of atlantic salmon, salmo salar l., in an improved water quality |
publisher |
Wiley |
publishDate |
1989 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1989.tb03037.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1989.tb03037.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1989.tb03037.x |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Biology volume 35, issue 6, page 855-868 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1989.tb03037.x |
container_title |
Journal of Fish Biology |
container_volume |
35 |
container_issue |
6 |
container_start_page |
855 |
op_container_end_page |
868 |
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1800747956554432512 |