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Avian BMR in Marine and Non-Marine Habitats: A Test Using Shorebirds

Basal metabolic rate (BMR) is closely linked to different habitats and way of life. In birds, some studies have noted that BMR is higher in marine species compared to those inhabiting terrestrial habitats. However, the extent of such metabolic dichotomy and its underlying mechanisms are largely unkn...

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Autores principales: Gutiérrez, Jorge S., Abad-Gómez, José M., Sánchez-Guzmán, Juan M., Navedo, Juan G., Masero, José A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3409136/
https://www.ncbi.nlm.nih.gov/pubmed/22860084
http://dx.doi.org/10.1371/journal.pone.0042206
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author Gutiérrez, Jorge S.
Abad-Gómez, José M.
Sánchez-Guzmán, Juan M.
Navedo, Juan G.
Masero, José A.
author_facet Gutiérrez, Jorge S.
Abad-Gómez, José M.
Sánchez-Guzmán, Juan M.
Navedo, Juan G.
Masero, José A.
author_sort Gutiérrez, Jorge S.
collection PubMed
description Basal metabolic rate (BMR) is closely linked to different habitats and way of life. In birds, some studies have noted that BMR is higher in marine species compared to those inhabiting terrestrial habitats. However, the extent of such metabolic dichotomy and its underlying mechanisms are largely unknown. Migratory shorebirds (Charadriiformes) offer a particularly interesting opportunity for testing this marine–non-marine difference as they are typically divided into two broad categories in terms of their habitat occupancy outside the breeding season: ‘coastal’ and ‘inland’ shorebirds. Here, we measured BMR for 12 species of migratory shorebirds wintering in temperate inland habitats and collected additional BMR values from the literature for coastal and inland shorebirds along their migratory route to make inter- and intraspecific comparisons. We also measured the BMR of inland and coastal dunlins Calidris alpina wintering at a similar latitude to facilitate a more direct intraspecific comparison. Our interspecific analyses showed that BMR was significantly lower in inland shorebirds than in coastal shorebirds after the effects of potentially confounding climatic (latitude, temperature, solar radiation, wind conditions) and organismal (body mass, migratory status, phylogeny) factors were accounted for. This indicates that part of the variation in basal metabolism might be attributed to genotypic divergence. Intraspecific comparisons showed that the mass-specific BMR of dunlins wintering in inland freshwater habitats was 15% lower than in coastal saline habitats, suggesting that phenotypic plasticity also plays an important role in generating these metabolic differences. We propose that the absence of tidally-induced food restrictions, low salinity, and less windy microclimates associated with inland freshwater habitats may reduce the levels of energy expenditure, and hence BMR. Further research including common-garden experiments that eliminate phenotypic plasticity as a source of phenotypic variation is needed to determine to what extent these general patterns are attributable to genotypic adaptation.
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spelling pubmed-34091362012-08-02 Avian BMR in Marine and Non-Marine Habitats: A Test Using Shorebirds Gutiérrez, Jorge S. Abad-Gómez, José M. Sánchez-Guzmán, Juan M. Navedo, Juan G. Masero, José A. PLoS One Research Article Basal metabolic rate (BMR) is closely linked to different habitats and way of life. In birds, some studies have noted that BMR is higher in marine species compared to those inhabiting terrestrial habitats. However, the extent of such metabolic dichotomy and its underlying mechanisms are largely unknown. Migratory shorebirds (Charadriiformes) offer a particularly interesting opportunity for testing this marine–non-marine difference as they are typically divided into two broad categories in terms of their habitat occupancy outside the breeding season: ‘coastal’ and ‘inland’ shorebirds. Here, we measured BMR for 12 species of migratory shorebirds wintering in temperate inland habitats and collected additional BMR values from the literature for coastal and inland shorebirds along their migratory route to make inter- and intraspecific comparisons. We also measured the BMR of inland and coastal dunlins Calidris alpina wintering at a similar latitude to facilitate a more direct intraspecific comparison. Our interspecific analyses showed that BMR was significantly lower in inland shorebirds than in coastal shorebirds after the effects of potentially confounding climatic (latitude, temperature, solar radiation, wind conditions) and organismal (body mass, migratory status, phylogeny) factors were accounted for. This indicates that part of the variation in basal metabolism might be attributed to genotypic divergence. Intraspecific comparisons showed that the mass-specific BMR of dunlins wintering in inland freshwater habitats was 15% lower than in coastal saline habitats, suggesting that phenotypic plasticity also plays an important role in generating these metabolic differences. We propose that the absence of tidally-induced food restrictions, low salinity, and less windy microclimates associated with inland freshwater habitats may reduce the levels of energy expenditure, and hence BMR. Further research including common-garden experiments that eliminate phenotypic plasticity as a source of phenotypic variation is needed to determine to what extent these general patterns are attributable to genotypic adaptation. Public Library of Science 2012-07-31 /pmc/articles/PMC3409136/ /pubmed/22860084 http://dx.doi.org/10.1371/journal.pone.0042206 Text en © 2012 Gutiérrez et al 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
Gutiérrez, Jorge S.
Abad-Gómez, José M.
Sánchez-Guzmán, Juan M.
Navedo, Juan G.
Masero, José A.
Avian BMR in Marine and Non-Marine Habitats: A Test Using Shorebirds
title Avian BMR in Marine and Non-Marine Habitats: A Test Using Shorebirds
title_full Avian BMR in Marine and Non-Marine Habitats: A Test Using Shorebirds
title_fullStr Avian BMR in Marine and Non-Marine Habitats: A Test Using Shorebirds
title_full_unstemmed Avian BMR in Marine and Non-Marine Habitats: A Test Using Shorebirds
title_short Avian BMR in Marine and Non-Marine Habitats: A Test Using Shorebirds
title_sort avian bmr in marine and non-marine habitats: a test using shorebirds
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3409136/
https://www.ncbi.nlm.nih.gov/pubmed/22860084
http://dx.doi.org/10.1371/journal.pone.0042206
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