Are stable isotope ratios and oscillations consistent in all baleen plates along the filtering apparatus? Validation of an increasingly used methodology

Rationale Baleen plates are anatomical structures composed of inert tissue that hang from the upper jaw in mysticetes. Baleen plates may differ in size and in coloration between different segments of the filtering row or between sides of the mouth. Concern has been raised that variation in baleen pl...

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Autores: García-Vernet, Raquel, Sant, Pol, Víkingsson, Gísli, Borrell Thió, Assumpció, Aguilar, Àlex
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2018
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/164243
Acceso en línea:https://hdl.handle.net/2445/164243
Access Level:acceso abierto
Palabra clave:Isòtops estables en ecologia
Filtració
Balenes
Stable isotopes in ecological research
Filtration
Whales
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spelling Are stable isotope ratios and oscillations consistent in all baleen plates along the filtering apparatus? Validation of an increasingly used methodologyGarcía-Vernet, RaquelSant, PolVíkingsson, GísliBorrell Thió, AssumpcióAguilar, ÀlexIsòtops estables en ecologiaFiltracióBalenesStable isotopes in ecological researchFiltrationWhalesRationale Baleen plates are anatomical structures composed of inert tissue that hang from the upper jaw in mysticetes. Baleen plates may differ in size and in coloration between different segments of the filtering row or between sides of the mouth. Concern has been raised that variation in baleen plate characteristics may reflect dissimilar structural composition and growth rates liable to affect stable isotope ratios and their oscillation patterns. Methods We measured stable carbon (δ13C values) and nitrogen (δ15N values) isotope ratios at intervals of 1 cm along the longitudinal axis of six baleen plates collected from different positions along the mouth of a fin whale. All samples were analysed using a continuous flow isotope ratio mass spectrometer. Generalized additive models were fitted to the data from each baleen plate and the results of the models were compared visually. Results A total of 206 samples were analysed. Visually, all baleen plates presented nearly identical oscillations, independent of the position or the coloration of the baleen plate. However, the variation in δ13C and δ15N values occurring between the different baleen plates was higher in the segments of oscillations exhibiting steeper slopes. Conclusions Differences in size between plates in an individual are due to differential erosion rates according to their position in the mouth. Therefore, the position of sampling along the baleen plate row should not be a reason for concern when conducting stable isotope studies.Wiley2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/164243Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: https://doi.org/10.1002/rcm.8169Rapid Communications in Mass Spectrometry, 2018, vol. 32, num. 15, p. 1257-1262https://doi.org/10.1002/rcm.8169(c) Wiley, 2018info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1642432026-05-27T06:46:51Z
dc.title.none.fl_str_mv Are stable isotope ratios and oscillations consistent in all baleen plates along the filtering apparatus? Validation of an increasingly used methodology
title Are stable isotope ratios and oscillations consistent in all baleen plates along the filtering apparatus? Validation of an increasingly used methodology
spellingShingle Are stable isotope ratios and oscillations consistent in all baleen plates along the filtering apparatus? Validation of an increasingly used methodology
García-Vernet, Raquel
Isòtops estables en ecologia
Filtració
Balenes
Stable isotopes in ecological research
Filtration
Whales
title_short Are stable isotope ratios and oscillations consistent in all baleen plates along the filtering apparatus? Validation of an increasingly used methodology
title_full Are stable isotope ratios and oscillations consistent in all baleen plates along the filtering apparatus? Validation of an increasingly used methodology
title_fullStr Are stable isotope ratios and oscillations consistent in all baleen plates along the filtering apparatus? Validation of an increasingly used methodology
title_full_unstemmed Are stable isotope ratios and oscillations consistent in all baleen plates along the filtering apparatus? Validation of an increasingly used methodology
title_sort Are stable isotope ratios and oscillations consistent in all baleen plates along the filtering apparatus? Validation of an increasingly used methodology
dc.creator.none.fl_str_mv García-Vernet, Raquel
Sant, Pol
Víkingsson, Gísli
Borrell Thió, Assumpció
Aguilar, Àlex
author García-Vernet, Raquel
author_facet García-Vernet, Raquel
Sant, Pol
Víkingsson, Gísli
Borrell Thió, Assumpció
Aguilar, Àlex
author_role author
author2 Sant, Pol
Víkingsson, Gísli
Borrell Thió, Assumpció
Aguilar, Àlex
author2_role author
author
author
author
dc.subject.none.fl_str_mv Isòtops estables en ecologia
Filtració
Balenes
Stable isotopes in ecological research
Filtration
Whales
topic Isòtops estables en ecologia
Filtració
Balenes
Stable isotopes in ecological research
Filtration
Whales
description Rationale Baleen plates are anatomical structures composed of inert tissue that hang from the upper jaw in mysticetes. Baleen plates may differ in size and in coloration between different segments of the filtering row or between sides of the mouth. Concern has been raised that variation in baleen plate characteristics may reflect dissimilar structural composition and growth rates liable to affect stable isotope ratios and their oscillation patterns. Methods We measured stable carbon (δ13C values) and nitrogen (δ15N values) isotope ratios at intervals of 1 cm along the longitudinal axis of six baleen plates collected from different positions along the mouth of a fin whale. All samples were analysed using a continuous flow isotope ratio mass spectrometer. Generalized additive models were fitted to the data from each baleen plate and the results of the models were compared visually. Results A total of 206 samples were analysed. Visually, all baleen plates presented nearly identical oscillations, independent of the position or the coloration of the baleen plate. However, the variation in δ13C and δ15N values occurring between the different baleen plates was higher in the segments of oscillations exhibiting steeper slopes. Conclusions Differences in size between plates in an individual are due to differential erosion rates according to their position in the mouth. Therefore, the position of sampling along the baleen plate row should not be a reason for concern when conducting stable isotope studies.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/164243
url https://hdl.handle.net/2445/164243
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1002/rcm.8169
Rapid Communications in Mass Spectrometry, 2018, vol. 32, num. 15, p. 1257-1262
https://doi.org/10.1002/rcm.8169
dc.rights.none.fl_str_mv (c) Wiley, 2018
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Wiley, 2018
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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