Association between swimming performance, cardiorespiratory morphometry, and thermal tolerance in Atlantic salmon (Salmo salar L.)
This experiment tested the hypothesis that swimming performance in Atlantic salmon ( Salmo salar ) parr is connected to cardiorespiratory performance and morphology, as well as maximum heart rate ( f Hmax ) related measures of thermal tolerance. Moreover, it was hypothesized that the cardiorespirato...
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ftunivturku:oai:www.utupub.fi:10024/169514 2023-05-15T15:31:49+02:00 Association between swimming performance, cardiorespiratory morphometry, and thermal tolerance in Atlantic salmon (Salmo salar L.) Sven Martin Jørgensen Harald Takle Matthew T. Casselman Katja Anttila Anthony P. Farrell Gerrit Timmerhaus PÄÄT Eläinfysiologia, PÄÄT Eläinfysiologia 2606405 2022-10-28T14:07:36Z https://www.utupub.fi/handle/10024/169514 en eng Sveitsi Switzerland CH 1 76 10.3389/fmars.2014.00076 Frontiers in Marine Science https://www.utupub.fi/handle/10024/169514 URN:NBN:fi-fe2021042715451 2296-7745 2022 ftunivturku 2022-11-03T00:02:13Z This experiment tested the hypothesis that swimming performance in Atlantic salmon ( Salmo salar ) parr is connected to cardiorespiratory performance and morphology, as well as maximum heart rate ( f Hmax ) related measures of thermal tolerance. Moreover, it was hypothesized that the cardiorespiratory differences between poor and strong swimmers will be retained in a later life stage, i.e., 15 weeks post-smoltification and seawater transfer. This experiment screened a population of 3200 parr (11.2 ± 0.25 g) for their swimming performance, classifying them as poor and good swimmers based on their critical swimming speeds (4.4 ± 0.1 body length s −1 and > 6.8 ± 0.1 body length s −1 , respectively). Compared with poor performing parr, good swimmers had a significantly thicker compact myocardium (by 23.7%) and taller gill secondary lamellae (by 16.2%). In contrast, there was no significant difference in maximum oxygen consumption between the two groups as assessed using a “chase” protocol, and the relationship between heart rate specific measures of thermal tolerance and swim performance was variable. For example, three measures did not differ between the two groups, whereas the Arrhenius breakpoint temperature for f Hmax and the highest f Hmax value were lower and higher, respectively, in the poor swimmers. Importantly, the identified morphological and difference in the highest f Hmax value at the parr stage persisted after 15 weeks of common garden rearing in seawater, and they were associated with an increase in relative ventricular mass and a small, but significant, improvement in growth rate. Therefore, it seems that an early assessment of swimming performance can effectively screen for morphological capacities related to oxygen supply and growth rate, but less so for heart rate related measures of thermal tolerance. Other/Unknown Material Atlantic salmon Salmo salar University of Turku: UTUPub |
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collection |
University of Turku: UTUPub |
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ftunivturku |
language |
English |
description |
This experiment tested the hypothesis that swimming performance in Atlantic salmon ( Salmo salar ) parr is connected to cardiorespiratory performance and morphology, as well as maximum heart rate ( f Hmax ) related measures of thermal tolerance. Moreover, it was hypothesized that the cardiorespiratory differences between poor and strong swimmers will be retained in a later life stage, i.e., 15 weeks post-smoltification and seawater transfer. This experiment screened a population of 3200 parr (11.2 ± 0.25 g) for their swimming performance, classifying them as poor and good swimmers based on their critical swimming speeds (4.4 ± 0.1 body length s −1 and > 6.8 ± 0.1 body length s −1 , respectively). Compared with poor performing parr, good swimmers had a significantly thicker compact myocardium (by 23.7%) and taller gill secondary lamellae (by 16.2%). In contrast, there was no significant difference in maximum oxygen consumption between the two groups as assessed using a “chase” protocol, and the relationship between heart rate specific measures of thermal tolerance and swim performance was variable. For example, three measures did not differ between the two groups, whereas the Arrhenius breakpoint temperature for f Hmax and the highest f Hmax value were lower and higher, respectively, in the poor swimmers. Importantly, the identified morphological and difference in the highest f Hmax value at the parr stage persisted after 15 weeks of common garden rearing in seawater, and they were associated with an increase in relative ventricular mass and a small, but significant, improvement in growth rate. Therefore, it seems that an early assessment of swimming performance can effectively screen for morphological capacities related to oxygen supply and growth rate, but less so for heart rate related measures of thermal tolerance. |
author2 |
PÄÄT Eläinfysiologia, PÄÄT Eläinfysiologia 2606405 |
author |
Sven Martin Jørgensen Harald Takle Matthew T. Casselman Katja Anttila Anthony P. Farrell Gerrit Timmerhaus |
spellingShingle |
Sven Martin Jørgensen Harald Takle Matthew T. Casselman Katja Anttila Anthony P. Farrell Gerrit Timmerhaus Association between swimming performance, cardiorespiratory morphometry, and thermal tolerance in Atlantic salmon (Salmo salar L.) |
author_facet |
Sven Martin Jørgensen Harald Takle Matthew T. Casselman Katja Anttila Anthony P. Farrell Gerrit Timmerhaus |
author_sort |
Sven Martin Jørgensen |
title |
Association between swimming performance, cardiorespiratory morphometry, and thermal tolerance in Atlantic salmon (Salmo salar L.) |
title_short |
Association between swimming performance, cardiorespiratory morphometry, and thermal tolerance in Atlantic salmon (Salmo salar L.) |
title_full |
Association between swimming performance, cardiorespiratory morphometry, and thermal tolerance in Atlantic salmon (Salmo salar L.) |
title_fullStr |
Association between swimming performance, cardiorespiratory morphometry, and thermal tolerance in Atlantic salmon (Salmo salar L.) |
title_full_unstemmed |
Association between swimming performance, cardiorespiratory morphometry, and thermal tolerance in Atlantic salmon (Salmo salar L.) |
title_sort |
association between swimming performance, cardiorespiratory morphometry, and thermal tolerance in atlantic salmon (salmo salar l.) |
publisher |
Sveitsi |
publishDate |
2022 |
url |
https://www.utupub.fi/handle/10024/169514 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
1 76 10.3389/fmars.2014.00076 Frontiers in Marine Science https://www.utupub.fi/handle/10024/169514 URN:NBN:fi-fe2021042715451 2296-7745 |
_version_ |
1766362329867354112 |