Understanding how birds rebuild fat stores during migration: insights from an experimental study
Mechanisms underlying fat accumulation for long-distance migration are not fully understood. This is especially relevant in the context of global change, as many migrants are dealing with changes in natural habitats and associated food sources and energy stores. The continental Black-tailed godwit L...
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ftpubmed:oai:pubmedcentral.nih.gov:6624420 2023-05-15T18:49:36+02:00 Understanding how birds rebuild fat stores during migration: insights from an experimental study Araújo, Pedro M. Viegas, Ivan Rocha, Afonso D. Villegas, Auxiliadora Jones, John G. Mendonça, Liliana Ramos, Jaime A. Masero, José A. Alves, José A. 2019-07-11 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6624420/ http://www.ncbi.nlm.nih.gov/pubmed/31296911 https://doi.org/10.1038/s41598-019-46487-z en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6624420/ http://www.ncbi.nlm.nih.gov/pubmed/31296911 http://dx.doi.org/10.1038/s41598-019-46487-z © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2019 ftpubmed https://doi.org/10.1038/s41598-019-46487-z 2019-08-04T00:35:37Z Mechanisms underlying fat accumulation for long-distance migration are not fully understood. This is especially relevant in the context of global change, as many migrants are dealing with changes in natural habitats and associated food sources and energy stores. The continental Black-tailed godwit Limosa limosa limosa is a long-distance migratory bird that has undergone a considerable dietary shift over the past few decades. Historically, godwits fed on an animal-based diet, but currently, during the non-breeding period godwits feed almost exclusively on rice seeds. The latter diet may allow building up of their fuel stores for migration by significantly increasing de novo lipogenesis (DNL) activity. Here, we performed an experiment to investigate lipid flux and the abundance of key enzymes involved in DNL in godwits, during fasting and refueling periods at the staging site, while feeding on rice seeds or fly larvae. Despite no significant differences found in enzymatic abundance (FASN, ME1, ACC and LPL) in stored fat, experimental godwits feeding on rice seeds presented high rates of DNL when compared to fly-larvae fed birds (~35 times more) and fasted godwits (no DNL activity). The increase of fractional DNL in godwits feeding on a carbohydrate-rich diet can potentially be enhanced by the fasting period that stimulates lipogenesis. Although requiring further testing, these recent findings provide new insights into the mechanisms of avian fat accumulation during a fasting and refueling cycle and associated responses to habitat and dietary changes in a migratory species. Text black-tailed godwit Limosa limosa PubMed Central (PMC) Scientific Reports 9 1 |
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Article Araújo, Pedro M. Viegas, Ivan Rocha, Afonso D. Villegas, Auxiliadora Jones, John G. Mendonça, Liliana Ramos, Jaime A. Masero, José A. Alves, José A. Understanding how birds rebuild fat stores during migration: insights from an experimental study |
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Article |
description |
Mechanisms underlying fat accumulation for long-distance migration are not fully understood. This is especially relevant in the context of global change, as many migrants are dealing with changes in natural habitats and associated food sources and energy stores. The continental Black-tailed godwit Limosa limosa limosa is a long-distance migratory bird that has undergone a considerable dietary shift over the past few decades. Historically, godwits fed on an animal-based diet, but currently, during the non-breeding period godwits feed almost exclusively on rice seeds. The latter diet may allow building up of their fuel stores for migration by significantly increasing de novo lipogenesis (DNL) activity. Here, we performed an experiment to investigate lipid flux and the abundance of key enzymes involved in DNL in godwits, during fasting and refueling periods at the staging site, while feeding on rice seeds or fly larvae. Despite no significant differences found in enzymatic abundance (FASN, ME1, ACC and LPL) in stored fat, experimental godwits feeding on rice seeds presented high rates of DNL when compared to fly-larvae fed birds (~35 times more) and fasted godwits (no DNL activity). The increase of fractional DNL in godwits feeding on a carbohydrate-rich diet can potentially be enhanced by the fasting period that stimulates lipogenesis. Although requiring further testing, these recent findings provide new insights into the mechanisms of avian fat accumulation during a fasting and refueling cycle and associated responses to habitat and dietary changes in a migratory species. |
format |
Text |
author |
Araújo, Pedro M. Viegas, Ivan Rocha, Afonso D. Villegas, Auxiliadora Jones, John G. Mendonça, Liliana Ramos, Jaime A. Masero, José A. Alves, José A. |
author_facet |
Araújo, Pedro M. Viegas, Ivan Rocha, Afonso D. Villegas, Auxiliadora Jones, John G. Mendonça, Liliana Ramos, Jaime A. Masero, José A. Alves, José A. |
author_sort |
Araújo, Pedro M. |
title |
Understanding how birds rebuild fat stores during migration: insights from an experimental study |
title_short |
Understanding how birds rebuild fat stores during migration: insights from an experimental study |
title_full |
Understanding how birds rebuild fat stores during migration: insights from an experimental study |
title_fullStr |
Understanding how birds rebuild fat stores during migration: insights from an experimental study |
title_full_unstemmed |
Understanding how birds rebuild fat stores during migration: insights from an experimental study |
title_sort |
understanding how birds rebuild fat stores during migration: insights from an experimental study |
publisher |
Nature Publishing Group UK |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6624420/ http://www.ncbi.nlm.nih.gov/pubmed/31296911 https://doi.org/10.1038/s41598-019-46487-z |
genre |
black-tailed godwit Limosa limosa |
genre_facet |
black-tailed godwit Limosa limosa |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6624420/ http://www.ncbi.nlm.nih.gov/pubmed/31296911 http://dx.doi.org/10.1038/s41598-019-46487-z |
op_rights |
© The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
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CC-BY |
op_doi |
https://doi.org/10.1038/s41598-019-46487-z |
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Scientific Reports |
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9 |
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