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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Online Access: | https://hdl.handle.net/10316/107382 https://doi.org/10.1038/s41598-019-46487-z |
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ftunivcoimbra:oai:estudogeral.uc.pt:10316/107382 2024-06-23T07:57:30+00:00 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 https://hdl.handle.net/10316/107382 https://doi.org/10.1038/s41598-019-46487-z eng eng Springer Nature #PLACEHOLDER_PARENT_METADATA_VALUE# SFRH/BD/69238/2010 SFRH/BPD/90032/2012 SFRH/BPD/91527/2012 RECI/QEQ-QFI/0168/2012 CENTRO-07-CT62-FEDER-002012 UID/MAR/04292/2019 UID/AMB/50017 POCI- 01-0145-FEDER-007638 POCI/2010/FEDER 2045-2322 https://hdl.handle.net/10316/107382 doi:10.1038/s41598-019-46487-z info:eu-repo/semantics/openAccess Adipose Tissue Animal Migration Animals Birds Diet Diet Therapy Ecosystem Lipogenesis Oryza Seasons info:eu-repo/semantics/article 2019 ftunivcoimbra https://doi.org/10.1038/s41598-019-46487-z 2024-06-11T23:48:49Z 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. Article in Journal/Newspaper black-tailed godwit Limosa limosa Universidade de Coimbra: Estudo Geral Scientific Reports 9 1 |
institution |
Open Polar |
collection |
Universidade de Coimbra: Estudo Geral |
op_collection_id |
ftunivcoimbra |
language |
English |
topic |
Adipose Tissue Animal Migration Animals Birds Diet Diet Therapy Ecosystem Lipogenesis Oryza Seasons |
spellingShingle |
Adipose Tissue Animal Migration Animals Birds Diet Diet Therapy Ecosystem Lipogenesis Oryza Seasons 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 |
topic_facet |
Adipose Tissue Animal Migration Animals Birds Diet Diet Therapy Ecosystem Lipogenesis Oryza Seasons |
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 |
Article in Journal/Newspaper |
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 |
Springer Nature |
publishDate |
2019 |
url |
https://hdl.handle.net/10316/107382 https://doi.org/10.1038/s41598-019-46487-z |
genre |
black-tailed godwit Limosa limosa |
genre_facet |
black-tailed godwit Limosa limosa |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# SFRH/BD/69238/2010 SFRH/BPD/90032/2012 SFRH/BPD/91527/2012 RECI/QEQ-QFI/0168/2012 CENTRO-07-CT62-FEDER-002012 UID/MAR/04292/2019 UID/AMB/50017 POCI- 01-0145-FEDER-007638 POCI/2010/FEDER 2045-2322 https://hdl.handle.net/10316/107382 doi:10.1038/s41598-019-46487-z |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41598-019-46487-z |
container_title |
Scientific Reports |
container_volume |
9 |
container_issue |
1 |
_version_ |
1802651166896553984 |