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Tracking the Development of Muscular Myoglobin Stores in Mysticete Calves
For marine mammals, the ability to tolerate apnea and make extended dives is a defining adaptive trait, facilitating the exploitation of marine food resources. Elevated levels of myoglobin within the muscles are a consistent hallmark of this trait, allowing oxygen collected at the surface to be stor...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4720374/ https://www.ncbi.nlm.nih.gov/pubmed/26788728 http://dx.doi.org/10.1371/journal.pone.0145893 |
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author | Cartwright, Rachel Newton, Cori West, Kristi M. Rice, Jim Niemeyer, Misty Burek, Kathryn Wilson, Andrew Wall, Alison N. Remonida-Bennett, Jean Tejeda, Areli Messi, Sarah Marcial-Hernandez, Lila |
author_facet | Cartwright, Rachel Newton, Cori West, Kristi M. Rice, Jim Niemeyer, Misty Burek, Kathryn Wilson, Andrew Wall, Alison N. Remonida-Bennett, Jean Tejeda, Areli Messi, Sarah Marcial-Hernandez, Lila |
author_sort | Cartwright, Rachel |
collection | PubMed |
description | For marine mammals, the ability to tolerate apnea and make extended dives is a defining adaptive trait, facilitating the exploitation of marine food resources. Elevated levels of myoglobin within the muscles are a consistent hallmark of this trait, allowing oxygen collected at the surface to be stored in the muscles and subsequently used to support extended dives. In mysticetes, the largest of marine predators, details on muscular myoglobin levels are limited. The developmental trajectory of muscular myoglobin stores has yet to be documented and any physiological links between early behavior and the development of muscular myoglobin stores remain unknown. In this study, we used muscle tissue samples from stranded mysticetes to investigate these issues. Samples from three different age cohorts and three species of mysticetes were included (total sample size = 18). Results indicate that in mysticete calves, muscle myoglobin stores comprise only a small percentage (17–23%) of conspecific adult myoglobin complements. Development of elevated myoglobin levels is protracted over the course of extended maturation in mysticetes. Additionally, comparisons of myoglobin levels between and within muscles, along with details of interspecific differences in rates of accumulation of myoglobin in very young mysticetes, suggest that levels of exercise may influence the rate of development of myoglobin stores in young mysticetes. This new information infers a close interplay between the physiology, ontogeny and early life history of young mysticetes and provides new insight into the pressures that may shape adaptive strategies in migratory mysticetes. Furthermore, the study highlights the vulnerability of specific age cohorts to impending changes in the availability of foraging habitat and marine resources. |
format | Online Article Text |
id | pubmed-4720374 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-47203742016-01-30 Tracking the Development of Muscular Myoglobin Stores in Mysticete Calves Cartwright, Rachel Newton, Cori West, Kristi M. Rice, Jim Niemeyer, Misty Burek, Kathryn Wilson, Andrew Wall, Alison N. Remonida-Bennett, Jean Tejeda, Areli Messi, Sarah Marcial-Hernandez, Lila PLoS One Research Article For marine mammals, the ability to tolerate apnea and make extended dives is a defining adaptive trait, facilitating the exploitation of marine food resources. Elevated levels of myoglobin within the muscles are a consistent hallmark of this trait, allowing oxygen collected at the surface to be stored in the muscles and subsequently used to support extended dives. In mysticetes, the largest of marine predators, details on muscular myoglobin levels are limited. The developmental trajectory of muscular myoglobin stores has yet to be documented and any physiological links between early behavior and the development of muscular myoglobin stores remain unknown. In this study, we used muscle tissue samples from stranded mysticetes to investigate these issues. Samples from three different age cohorts and three species of mysticetes were included (total sample size = 18). Results indicate that in mysticete calves, muscle myoglobin stores comprise only a small percentage (17–23%) of conspecific adult myoglobin complements. Development of elevated myoglobin levels is protracted over the course of extended maturation in mysticetes. Additionally, comparisons of myoglobin levels between and within muscles, along with details of interspecific differences in rates of accumulation of myoglobin in very young mysticetes, suggest that levels of exercise may influence the rate of development of myoglobin stores in young mysticetes. This new information infers a close interplay between the physiology, ontogeny and early life history of young mysticetes and provides new insight into the pressures that may shape adaptive strategies in migratory mysticetes. Furthermore, the study highlights the vulnerability of specific age cohorts to impending changes in the availability of foraging habitat and marine resources. Public Library of Science 2016-01-20 /pmc/articles/PMC4720374/ /pubmed/26788728 http://dx.doi.org/10.1371/journal.pone.0145893 Text en © 2016 Cartwright 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 (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited |
spellingShingle | Research Article Cartwright, Rachel Newton, Cori West, Kristi M. Rice, Jim Niemeyer, Misty Burek, Kathryn Wilson, Andrew Wall, Alison N. Remonida-Bennett, Jean Tejeda, Areli Messi, Sarah Marcial-Hernandez, Lila Tracking the Development of Muscular Myoglobin Stores in Mysticete Calves |
title | Tracking the Development of Muscular Myoglobin Stores in Mysticete Calves |
title_full | Tracking the Development of Muscular Myoglobin Stores in Mysticete Calves |
title_fullStr | Tracking the Development of Muscular Myoglobin Stores in Mysticete Calves |
title_full_unstemmed | Tracking the Development of Muscular Myoglobin Stores in Mysticete Calves |
title_short | Tracking the Development of Muscular Myoglobin Stores in Mysticete Calves |
title_sort | tracking the development of muscular myoglobin stores in mysticete calves |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4720374/ https://www.ncbi.nlm.nih.gov/pubmed/26788728 http://dx.doi.org/10.1371/journal.pone.0145893 |
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