Accommodating the cost of growth and swimming in fish – the applicability of exercise-induced growth to juvenile hapuku (Polyprion oxygeneios)
Induced-swimming can improve the growth and feed conversion efficiency of finfish aquaculture species, such as salmonids and Seriola sp., but some species, such as Atlantic cod, show no or a negative productivity response to exercise. As a possible explanation for these species-specific differences,...
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ftdoajarticles:oai:doaj.org/article:ef1eee6505b0413f979ca3aab35d226a 2023-05-15T15:27:44+02:00 Accommodating the cost of growth and swimming in fish – the applicability of exercise-induced growth to juvenile hapuku (Polyprion oxygeneios) Javed eKhan Caroline eTrembath Steve ePether Michael eBruce Seumas eWalker Neill Andrew Herbert 2014-12-01T00:00:00Z https://doi.org/10.3389/fphys.2014.00448 https://doaj.org/article/ef1eee6505b0413f979ca3aab35d226a EN eng Frontiers Media S.A. http://journal.frontiersin.org/Journal/10.3389/fphys.2014.00448/full https://doaj.org/toc/1664-042X 1664-042X doi:10.3389/fphys.2014.00448 https://doaj.org/article/ef1eee6505b0413f979ca3aab35d226a Frontiers in Physiology, Vol 5 (2014) Exercise Growth Metabolism exercise training swim-flume respirometry aerobic metabolic scope Physiology QP1-981 article 2014 ftdoajarticles https://doi.org/10.3389/fphys.2014.00448 2022-12-31T03:40:01Z Induced-swimming can improve the growth and feed conversion efficiency of finfish aquaculture species, such as salmonids and Seriola sp., but some species, such as Atlantic cod, show no or a negative productivity response to exercise. As a possible explanation for these species-specific differences, a recent hypothesis proposed that the applicability of exercise training, as well as the exercise regime for optimal growth gain (ER opt growth), was dependent upon the size of available aerobic metabolic scope (AMS). This study aimed to test this hypothesis by measuring the growth and swimming metabolism of hapuku, Polyprion oxygeneios, to different exercise regimes and reconciling the metabolic costs of swimming and growth (i.e. specific dynamic action, SDA) against AMS. Two 8-week growth trials were conducted with ERs of 0.0, 0.25, 0.5, 0.75, 1 and 1.5 body lengths per second (BL s-1). Fish on a relatively high growth trajectory showed a small but positive growth response to exercise but only in the range of 0.5 to 0.75 BL s-1 compared to static water controls. Slightly larger fish on a slower growth trajectory, however, showed no evidence of exercise-induced growth. Long-term exposure to water flow at 0.75 and 1.5 BL s-1 also yielded no difference in the swimming metabolism of fish relative to static water controls. Reconciling the SDA of hapuku with the metabolic costs of swimming showed that hapuku AMS is sufficient to support growth and swimming at all ERs. The current study therefore suggests that exercise-induced growth is independent of AMS and possibly varies as a function of species, life stage and/or inherent growth trajectories. Article in Journal/Newspaper atlantic cod Directory of Open Access Journals: DOAJ Articles Frontiers in Physiology 5 |
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English |
topic |
Exercise Growth Metabolism exercise training swim-flume respirometry aerobic metabolic scope Physiology QP1-981 |
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Exercise Growth Metabolism exercise training swim-flume respirometry aerobic metabolic scope Physiology QP1-981 Javed eKhan Caroline eTrembath Steve ePether Michael eBruce Seumas eWalker Neill Andrew Herbert Accommodating the cost of growth and swimming in fish – the applicability of exercise-induced growth to juvenile hapuku (Polyprion oxygeneios) |
topic_facet |
Exercise Growth Metabolism exercise training swim-flume respirometry aerobic metabolic scope Physiology QP1-981 |
description |
Induced-swimming can improve the growth and feed conversion efficiency of finfish aquaculture species, such as salmonids and Seriola sp., but some species, such as Atlantic cod, show no or a negative productivity response to exercise. As a possible explanation for these species-specific differences, a recent hypothesis proposed that the applicability of exercise training, as well as the exercise regime for optimal growth gain (ER opt growth), was dependent upon the size of available aerobic metabolic scope (AMS). This study aimed to test this hypothesis by measuring the growth and swimming metabolism of hapuku, Polyprion oxygeneios, to different exercise regimes and reconciling the metabolic costs of swimming and growth (i.e. specific dynamic action, SDA) against AMS. Two 8-week growth trials were conducted with ERs of 0.0, 0.25, 0.5, 0.75, 1 and 1.5 body lengths per second (BL s-1). Fish on a relatively high growth trajectory showed a small but positive growth response to exercise but only in the range of 0.5 to 0.75 BL s-1 compared to static water controls. Slightly larger fish on a slower growth trajectory, however, showed no evidence of exercise-induced growth. Long-term exposure to water flow at 0.75 and 1.5 BL s-1 also yielded no difference in the swimming metabolism of fish relative to static water controls. Reconciling the SDA of hapuku with the metabolic costs of swimming showed that hapuku AMS is sufficient to support growth and swimming at all ERs. The current study therefore suggests that exercise-induced growth is independent of AMS and possibly varies as a function of species, life stage and/or inherent growth trajectories. |
format |
Article in Journal/Newspaper |
author |
Javed eKhan Caroline eTrembath Steve ePether Michael eBruce Seumas eWalker Neill Andrew Herbert |
author_facet |
Javed eKhan Caroline eTrembath Steve ePether Michael eBruce Seumas eWalker Neill Andrew Herbert |
author_sort |
Javed eKhan |
title |
Accommodating the cost of growth and swimming in fish – the applicability of exercise-induced growth to juvenile hapuku (Polyprion oxygeneios) |
title_short |
Accommodating the cost of growth and swimming in fish – the applicability of exercise-induced growth to juvenile hapuku (Polyprion oxygeneios) |
title_full |
Accommodating the cost of growth and swimming in fish – the applicability of exercise-induced growth to juvenile hapuku (Polyprion oxygeneios) |
title_fullStr |
Accommodating the cost of growth and swimming in fish – the applicability of exercise-induced growth to juvenile hapuku (Polyprion oxygeneios) |
title_full_unstemmed |
Accommodating the cost of growth and swimming in fish – the applicability of exercise-induced growth to juvenile hapuku (Polyprion oxygeneios) |
title_sort |
accommodating the cost of growth and swimming in fish – the applicability of exercise-induced growth to juvenile hapuku (polyprion oxygeneios) |
publisher |
Frontiers Media S.A. |
publishDate |
2014 |
url |
https://doi.org/10.3389/fphys.2014.00448 https://doaj.org/article/ef1eee6505b0413f979ca3aab35d226a |
genre |
atlantic cod |
genre_facet |
atlantic cod |
op_source |
Frontiers in Physiology, Vol 5 (2014) |
op_relation |
http://journal.frontiersin.org/Journal/10.3389/fphys.2014.00448/full https://doaj.org/toc/1664-042X 1664-042X doi:10.3389/fphys.2014.00448 https://doaj.org/article/ef1eee6505b0413f979ca3aab35d226a |
op_doi |
https://doi.org/10.3389/fphys.2014.00448 |
container_title |
Frontiers in Physiology |
container_volume |
5 |
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1766358147389194240 |