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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crwiley:10.1002/rcm.8169 2024-06-02T08:06:33+00:00 Are stable isotope ratios and oscillations consistent in all baleen plates along the filtering apparatus? Validation of an increasingly used methodology García‐Vernet, Raquel Sant, Pol Víkingsson, Gísli Borrell, Asunción Aguilar, Alex Ministerio de Economía y Competitividad 2018 http://dx.doi.org/10.1002/rcm.8169 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Frcm.8169 https://onlinelibrary.wiley.com/doi/full/10.1002/rcm.8169 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Rapid Communications in Mass Spectrometry volume 32, issue 15, page 1257-1262 ISSN 0951-4198 1097-0231 journal-article 2018 crwiley https://doi.org/10.1002/rcm.8169 2024-05-03T11:51:44Z 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 (δ 13 C values) and nitrogen (δ 15 N 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 δ 13 C and δ 15 N 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. Article in Journal/Newspaper Fin whale Wiley Online Library Rapid Communications in Mass Spectrometry 32 15 1257 1262 |
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Open Polar |
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Wiley Online Library |
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crwiley |
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English |
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 (δ 13 C values) and nitrogen (δ 15 N 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 δ 13 C and δ 15 N 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. |
author2 |
Ministerio de Economía y Competitividad |
format |
Article in Journal/Newspaper |
author |
García‐Vernet, Raquel Sant, Pol Víkingsson, Gísli Borrell, Asunción Aguilar, Alex |
spellingShingle |
García‐Vernet, Raquel Sant, Pol Víkingsson, Gísli Borrell, Asunción Aguilar, Alex Are stable isotope ratios and oscillations consistent in all baleen plates along the filtering apparatus? Validation of an increasingly used methodology |
author_facet |
García‐Vernet, Raquel Sant, Pol Víkingsson, Gísli Borrell, Asunción Aguilar, Alex |
author_sort |
García‐Vernet, Raquel |
title |
Are stable isotope ratios and oscillations consistent in all baleen plates along the filtering apparatus? Validation of an increasingly used methodology |
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 |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1002/rcm.8169 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Frcm.8169 https://onlinelibrary.wiley.com/doi/full/10.1002/rcm.8169 |
genre |
Fin whale |
genre_facet |
Fin whale |
op_source |
Rapid Communications in Mass Spectrometry volume 32, issue 15, page 1257-1262 ISSN 0951-4198 1097-0231 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/rcm.8169 |
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Rapid Communications in Mass Spectrometry |
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32 |
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15 |
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1257 |
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1262 |
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1800751516783476736 |