Impact of differential energy allocation in Atlantic salmon ( Salmo salar ) precocious males on otolithsomatic size proportionality: a longitudinal approach
We studied juvenile Atlantic salmon (Salmo salar) males that become precociously mature or not at age-1+ to test the hypothesis that differential energy allocation affects the relationship between otolith size and fish size and to validate the use of a back-calculation method to estimate size over 3...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
2002
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/f02-124 http://www.nrcresearchpress.com/doi/pdf/10.1139/f02-124 |
id |
crcansciencepubl:10.1139/f02-124 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/f02-124 2023-12-17T10:27:14+01:00 Impact of differential energy allocation in Atlantic salmon ( Salmo salar ) precocious males on otolithsomatic size proportionality: a longitudinal approach Aubin-Horth, Nadia Dodson, Julian J 2002 http://dx.doi.org/10.1139/f02-124 http://www.nrcresearchpress.com/doi/pdf/10.1139/f02-124 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 59, issue 10, page 1575-1583 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2002 crcansciencepubl https://doi.org/10.1139/f02-124 2023-11-19T13:39:28Z We studied juvenile Atlantic salmon (Salmo salar) males that become precociously mature or not at age-1+ to test the hypothesis that differential energy allocation affects the relationship between otolith size and fish size and to validate the use of a back-calculation method to estimate size over 30 weeks. We used a longitudinal approach by repeatedly measuring marked fish and obtaining corresponding otolith radius measurements. Differential energy allocation of mature males did not affect the proportionality ratio between otolith and somatic size. Short-term otolith growth varied with short-term somatic growth, but only weakly with temperature. Some correlation coefficients of the covariation of otolith growth estimated over a longer time interval with somatic growth were significantly greater than the short-term estimate. For mature and immature males, back-calculated lengths accurately estimated the observed individual length on practically all occasions. These results indicate that back-calculation can be used to estimate size for Atlantic salmon with different energy allocation patterns. Variable strength of coupling of otolith and somatic growth depending on time interval suggests that these processes are completed on different time scales. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing (via Crossref) Canadian Journal of Fisheries and Aquatic Sciences 59 10 1575 1583 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Aubin-Horth, Nadia Dodson, Julian J Impact of differential energy allocation in Atlantic salmon ( Salmo salar ) precocious males on otolithsomatic size proportionality: a longitudinal approach |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
We studied juvenile Atlantic salmon (Salmo salar) males that become precociously mature or not at age-1+ to test the hypothesis that differential energy allocation affects the relationship between otolith size and fish size and to validate the use of a back-calculation method to estimate size over 30 weeks. We used a longitudinal approach by repeatedly measuring marked fish and obtaining corresponding otolith radius measurements. Differential energy allocation of mature males did not affect the proportionality ratio between otolith and somatic size. Short-term otolith growth varied with short-term somatic growth, but only weakly with temperature. Some correlation coefficients of the covariation of otolith growth estimated over a longer time interval with somatic growth were significantly greater than the short-term estimate. For mature and immature males, back-calculated lengths accurately estimated the observed individual length on practically all occasions. These results indicate that back-calculation can be used to estimate size for Atlantic salmon with different energy allocation patterns. Variable strength of coupling of otolith and somatic growth depending on time interval suggests that these processes are completed on different time scales. |
format |
Article in Journal/Newspaper |
author |
Aubin-Horth, Nadia Dodson, Julian J |
author_facet |
Aubin-Horth, Nadia Dodson, Julian J |
author_sort |
Aubin-Horth, Nadia |
title |
Impact of differential energy allocation in Atlantic salmon ( Salmo salar ) precocious males on otolithsomatic size proportionality: a longitudinal approach |
title_short |
Impact of differential energy allocation in Atlantic salmon ( Salmo salar ) precocious males on otolithsomatic size proportionality: a longitudinal approach |
title_full |
Impact of differential energy allocation in Atlantic salmon ( Salmo salar ) precocious males on otolithsomatic size proportionality: a longitudinal approach |
title_fullStr |
Impact of differential energy allocation in Atlantic salmon ( Salmo salar ) precocious males on otolithsomatic size proportionality: a longitudinal approach |
title_full_unstemmed |
Impact of differential energy allocation in Atlantic salmon ( Salmo salar ) precocious males on otolithsomatic size proportionality: a longitudinal approach |
title_sort |
impact of differential energy allocation in atlantic salmon ( salmo salar ) precocious males on otolithsomatic size proportionality: a longitudinal approach |
publisher |
Canadian Science Publishing |
publishDate |
2002 |
url |
http://dx.doi.org/10.1139/f02-124 http://www.nrcresearchpress.com/doi/pdf/10.1139/f02-124 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 59, issue 10, page 1575-1583 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f02-124 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
59 |
container_issue |
10 |
container_start_page |
1575 |
op_container_end_page |
1583 |
_version_ |
1785579030014066688 |