Cargando…

Scaling in Free-Swimming Fish and Implications for Measuring Size-at-Time in the Wild

This study was motivated by the need to measure size-at-age, and thus growth rate, in fish in the wild. We postulated that this could be achieved using accelerometer tags based first on early isometric scaling models that hypothesize that similar animals should move at the same speed with a stroke f...

Descripción completa

Detalles Bibliográficos
Autores principales: Broell, Franziska, Taggart, Christopher T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4684220/
https://www.ncbi.nlm.nih.gov/pubmed/26673777
http://dx.doi.org/10.1371/journal.pone.0144875
_version_ 1782406151313293312
author Broell, Franziska
Taggart, Christopher T.
author_facet Broell, Franziska
Taggart, Christopher T.
author_sort Broell, Franziska
collection PubMed
description This study was motivated by the need to measure size-at-age, and thus growth rate, in fish in the wild. We postulated that this could be achieved using accelerometer tags based first on early isometric scaling models that hypothesize that similar animals should move at the same speed with a stroke frequency that scales with length(-1), and second on observations that the speed of primarily air-breathing free-swimming animals, presumably swimming ‘efficiently’, is independent of size, confirming that stroke frequency scales as length(-1). However, such scaling relations between size and swimming parameters for fish remain mostly theoretical. Based on free-swimming saithe and sturgeon tagged with accelerometers, we introduce a species-specific scaling relationship between dominant tail beat frequency (TBF) and fork length. Dominant TBF was proportional to length(-1) (r(2) = 0.73, n = 40), and estimated swimming speed within species was independent of length. Similar scaling relations accrued in relation to body mass(-0.29). We demonstrate that the dominant TBF can be used to estimate size-at-time and that accelerometer tags with onboard processing may be able to provide size-at-time estimates among free-swimming fish and thus the estimation of growth rate (change in size-at-time) in the wild.
format Online
Article
Text
id pubmed-4684220
institution National Center for Biotechnology Information
language English
publishDate 2015
publisher Public Library of Science
record_format MEDLINE/PubMed
spelling pubmed-46842202015-12-31 Scaling in Free-Swimming Fish and Implications for Measuring Size-at-Time in the Wild Broell, Franziska Taggart, Christopher T. PLoS One Research Article This study was motivated by the need to measure size-at-age, and thus growth rate, in fish in the wild. We postulated that this could be achieved using accelerometer tags based first on early isometric scaling models that hypothesize that similar animals should move at the same speed with a stroke frequency that scales with length(-1), and second on observations that the speed of primarily air-breathing free-swimming animals, presumably swimming ‘efficiently’, is independent of size, confirming that stroke frequency scales as length(-1). However, such scaling relations between size and swimming parameters for fish remain mostly theoretical. Based on free-swimming saithe and sturgeon tagged with accelerometers, we introduce a species-specific scaling relationship between dominant tail beat frequency (TBF) and fork length. Dominant TBF was proportional to length(-1) (r(2) = 0.73, n = 40), and estimated swimming speed within species was independent of length. Similar scaling relations accrued in relation to body mass(-0.29). We demonstrate that the dominant TBF can be used to estimate size-at-time and that accelerometer tags with onboard processing may be able to provide size-at-time estimates among free-swimming fish and thus the estimation of growth rate (change in size-at-time) in the wild. Public Library of Science 2015-12-16 /pmc/articles/PMC4684220/ /pubmed/26673777 http://dx.doi.org/10.1371/journal.pone.0144875 Text en © 2015 Broell, Taggart http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Broell, Franziska
Taggart, Christopher T.
Scaling in Free-Swimming Fish and Implications for Measuring Size-at-Time in the Wild
title Scaling in Free-Swimming Fish and Implications for Measuring Size-at-Time in the Wild
title_full Scaling in Free-Swimming Fish and Implications for Measuring Size-at-Time in the Wild
title_fullStr Scaling in Free-Swimming Fish and Implications for Measuring Size-at-Time in the Wild
title_full_unstemmed Scaling in Free-Swimming Fish and Implications for Measuring Size-at-Time in the Wild
title_short Scaling in Free-Swimming Fish and Implications for Measuring Size-at-Time in the Wild
title_sort scaling in free-swimming fish and implications for measuring size-at-time in the wild
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4684220/
https://www.ncbi.nlm.nih.gov/pubmed/26673777
http://dx.doi.org/10.1371/journal.pone.0144875
work_keys_str_mv AT broellfranziska scalinginfreeswimmingfishandimplicationsformeasuringsizeattimeinthewild
AT taggartchristophert scalinginfreeswimmingfishandimplicationsformeasuringsizeattimeinthewild