Uncoupling of Somatic and Otolith Growth Rates in Arctic Char ( Salvelinus alpinus) as an Effect of Differences in Temperature Response
Experiments were conducted to study the effect of temperature, fish size, and somatic growth rate on mean daily otolith growth rate in Arctic char (Salvelinus alpinus) fry fed maximum rations. Long-term experiments at two different temperatures (8 and 13 °C) showed exponential relationships between...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
1988
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/f88-180 http://www.nrcresearchpress.com/doi/pdf/10.1139/f88-180 |
id |
crcansciencepubl:10.1139/f88-180 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/f88-180 2024-04-28T08:09:07+00:00 Uncoupling of Somatic and Otolith Growth Rates in Arctic Char ( Salvelinus alpinus) as an Effect of Differences in Temperature Response Mosegaard, Henrik Svedäng, Henrik Taberman, Kjell 1988 http://dx.doi.org/10.1139/f88-180 http://www.nrcresearchpress.com/doi/pdf/10.1139/f88-180 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 45, issue 9, page 1514-1524 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1988 crcansciencepubl https://doi.org/10.1139/f88-180 2024-04-09T06:56:26Z Experiments were conducted to study the effect of temperature, fish size, and somatic growth rate on mean daily otolith growth rate in Arctic char (Salvelinus alpinus) fry fed maximum rations. Long-term experiments at two different temperatures (8 and 13 °C) showed exponential relationships between otolith weight and fish wet weight, with the exponent of wet weight for the higher temperature being significantly higher than for the lower temperature. Increasing exponents at each sampling date indicated a difference in growth rates of the char and its otoliths. Short-term experiments showed that specific growth rate of the fry at six different temperatures was that of an optimum curve whereas the otolith growth rate continued to increase with increasing temperatures. A clear uncoupling between otolith growth rate and fish growth rate was demonstrated whereas temperature and fish wet weight modeled otolith growth rate reasonably well. It was found that otolith growth rate expressed as daily increase in weight gave a model with better fit and higher generality than growth rate along various radii. Several examples of uncoupling between fish growth rate and otolith growth rate in the literature were reexamined, and an explanation of otolith growth rate in terms of a metabolic expression was suggested. Article in Journal/Newspaper Arctic Salvelinus alpinus Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 45 9 1514 1524 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Mosegaard, Henrik Svedäng, Henrik Taberman, Kjell Uncoupling of Somatic and Otolith Growth Rates in Arctic Char ( Salvelinus alpinus) as an Effect of Differences in Temperature Response |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Experiments were conducted to study the effect of temperature, fish size, and somatic growth rate on mean daily otolith growth rate in Arctic char (Salvelinus alpinus) fry fed maximum rations. Long-term experiments at two different temperatures (8 and 13 °C) showed exponential relationships between otolith weight and fish wet weight, with the exponent of wet weight for the higher temperature being significantly higher than for the lower temperature. Increasing exponents at each sampling date indicated a difference in growth rates of the char and its otoliths. Short-term experiments showed that specific growth rate of the fry at six different temperatures was that of an optimum curve whereas the otolith growth rate continued to increase with increasing temperatures. A clear uncoupling between otolith growth rate and fish growth rate was demonstrated whereas temperature and fish wet weight modeled otolith growth rate reasonably well. It was found that otolith growth rate expressed as daily increase in weight gave a model with better fit and higher generality than growth rate along various radii. Several examples of uncoupling between fish growth rate and otolith growth rate in the literature were reexamined, and an explanation of otolith growth rate in terms of a metabolic expression was suggested. |
format |
Article in Journal/Newspaper |
author |
Mosegaard, Henrik Svedäng, Henrik Taberman, Kjell |
author_facet |
Mosegaard, Henrik Svedäng, Henrik Taberman, Kjell |
author_sort |
Mosegaard, Henrik |
title |
Uncoupling of Somatic and Otolith Growth Rates in Arctic Char ( Salvelinus alpinus) as an Effect of Differences in Temperature Response |
title_short |
Uncoupling of Somatic and Otolith Growth Rates in Arctic Char ( Salvelinus alpinus) as an Effect of Differences in Temperature Response |
title_full |
Uncoupling of Somatic and Otolith Growth Rates in Arctic Char ( Salvelinus alpinus) as an Effect of Differences in Temperature Response |
title_fullStr |
Uncoupling of Somatic and Otolith Growth Rates in Arctic Char ( Salvelinus alpinus) as an Effect of Differences in Temperature Response |
title_full_unstemmed |
Uncoupling of Somatic and Otolith Growth Rates in Arctic Char ( Salvelinus alpinus) as an Effect of Differences in Temperature Response |
title_sort |
uncoupling of somatic and otolith growth rates in arctic char ( salvelinus alpinus) as an effect of differences in temperature response |
publisher |
Canadian Science Publishing |
publishDate |
1988 |
url |
http://dx.doi.org/10.1139/f88-180 http://www.nrcresearchpress.com/doi/pdf/10.1139/f88-180 |
genre |
Arctic Salvelinus alpinus |
genre_facet |
Arctic Salvelinus alpinus |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 45, issue 9, page 1514-1524 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f88-180 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
45 |
container_issue |
9 |
container_start_page |
1514 |
op_container_end_page |
1524 |
_version_ |
1797577565916889088 |