Post-prandial changes in protein synthesis in red drum (Sciaenops ocellatus) larvae
Protein synthesis is one of the major energy-consuming processes in all living organisms. Post-prandial changes in protein synthesis have been studied in a range of animal taxa but have been little studied in fish larvae. Using the flooding-dose method, we measured post-prandial changes in whole-bod...
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fthighwire:oai:open-archive.highwire.org:jexbio:214/11/1821 2023-05-15T18:06:05+02:00 Post-prandial changes in protein synthesis in red drum (Sciaenops ocellatus) larvae McCarthy, Ian D. Fuiman, Lee A. 2011-06-01 00:00:00.0 text/html http://jeb.biologists.org/cgi/content/short/214/11/1821 https://doi.org/10.1242/jeb.052753 en eng Company of Biologists http://jeb.biologists.org/cgi/content/short/214/11/1821 http://dx.doi.org/10.1242/jeb.052753 Copyright (C) 2011, Company of Biologists Research Articles TEXT 2011 fthighwire https://doi.org/10.1242/jeb.052753 2013-05-27T12:24:19Z Protein synthesis is one of the major energy-consuming processes in all living organisms. Post-prandial changes in protein synthesis have been studied in a range of animal taxa but have been little studied in fish larvae. Using the flooding-dose method, we measured post-prandial changes in whole-body rates of protein synthesis in regularly fed red drum Sciaenops ocellatus (Linnaeus) larvae for 24–28 h following their daily meal. Fractional rates of protein synthesis increased from a baseline (pre-feeding) rate of 16% day–1 to a post-prandial peak of 48% day–1 ca. 8 h after feeding before declining to 12% day–1 after 24–28 h. The overall mean daily rate of protein synthesis was calculated as 27% day–1. Although suggested as energetically impossible in larval poikilotherms, our results show that rates in excess of 30% day–1 can be attained by larval fishes for a few hours but are not sustained. The average daily energetic cost of protein synthesis was estimated as 34% of daily total oxygen consumption, ranging from 19% immediately before feeding to 61% during the post-prandial peak in protein synthesis. This suggests that during the post-prandial peak, protein synthesis will require a large proportion of the hourly energy production, which, given the limited metabolic scope in fish larvae, may limit the energy that could otherwise be allocated to other energy-costly functions, such as foraging and escape responses. Text Red drum Sciaenops ocellatus HighWire Press (Stanford University) Journal of Experimental Biology 214 11 1821 1828 |
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HighWire Press (Stanford University) |
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English |
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Research Articles |
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Research Articles McCarthy, Ian D. Fuiman, Lee A. Post-prandial changes in protein synthesis in red drum (Sciaenops ocellatus) larvae |
topic_facet |
Research Articles |
description |
Protein synthesis is one of the major energy-consuming processes in all living organisms. Post-prandial changes in protein synthesis have been studied in a range of animal taxa but have been little studied in fish larvae. Using the flooding-dose method, we measured post-prandial changes in whole-body rates of protein synthesis in regularly fed red drum Sciaenops ocellatus (Linnaeus) larvae for 24–28 h following their daily meal. Fractional rates of protein synthesis increased from a baseline (pre-feeding) rate of 16% day–1 to a post-prandial peak of 48% day–1 ca. 8 h after feeding before declining to 12% day–1 after 24–28 h. The overall mean daily rate of protein synthesis was calculated as 27% day–1. Although suggested as energetically impossible in larval poikilotherms, our results show that rates in excess of 30% day–1 can be attained by larval fishes for a few hours but are not sustained. The average daily energetic cost of protein synthesis was estimated as 34% of daily total oxygen consumption, ranging from 19% immediately before feeding to 61% during the post-prandial peak in protein synthesis. This suggests that during the post-prandial peak, protein synthesis will require a large proportion of the hourly energy production, which, given the limited metabolic scope in fish larvae, may limit the energy that could otherwise be allocated to other energy-costly functions, such as foraging and escape responses. |
format |
Text |
author |
McCarthy, Ian D. Fuiman, Lee A. |
author_facet |
McCarthy, Ian D. Fuiman, Lee A. |
author_sort |
McCarthy, Ian D. |
title |
Post-prandial changes in protein synthesis in red drum (Sciaenops ocellatus) larvae |
title_short |
Post-prandial changes in protein synthesis in red drum (Sciaenops ocellatus) larvae |
title_full |
Post-prandial changes in protein synthesis in red drum (Sciaenops ocellatus) larvae |
title_fullStr |
Post-prandial changes in protein synthesis in red drum (Sciaenops ocellatus) larvae |
title_full_unstemmed |
Post-prandial changes in protein synthesis in red drum (Sciaenops ocellatus) larvae |
title_sort |
post-prandial changes in protein synthesis in red drum (sciaenops ocellatus) larvae |
publisher |
Company of Biologists |
publishDate |
2011 |
url |
http://jeb.biologists.org/cgi/content/short/214/11/1821 https://doi.org/10.1242/jeb.052753 |
genre |
Red drum Sciaenops ocellatus |
genre_facet |
Red drum Sciaenops ocellatus |
op_relation |
http://jeb.biologists.org/cgi/content/short/214/11/1821 http://dx.doi.org/10.1242/jeb.052753 |
op_rights |
Copyright (C) 2011, Company of Biologists |
op_doi |
https://doi.org/10.1242/jeb.052753 |
container_title |
Journal of Experimental Biology |
container_volume |
214 |
container_issue |
11 |
container_start_page |
1821 |
op_container_end_page |
1828 |
_version_ |
1766177657279479808 |