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...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2016-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC4720374?pdf=render |
| _version_ | 1819077623931731968 |
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| author | Rachel Cartwright Cori Newton Kristi M West Jim Rice Misty Niemeyer Kathryn Burek Andrew Wilson Alison N Wall Jean Remonida-Bennett Areli Tejeda Sarah Messi Lila Marcial-Hernandez |
| author_facet | Rachel Cartwright Cori Newton Kristi M West Jim Rice Misty Niemeyer Kathryn Burek Andrew Wilson Alison N Wall Jean Remonida-Bennett Areli Tejeda Sarah Messi Lila Marcial-Hernandez |
| author_sort | Rachel Cartwright |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-21T19:00:09Z |
| format | Article |
| id | doaj.art-fbb92072c857470383e7385964d6d1be |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-21T19:00:09Z |
| publishDate | 2016-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-fbb92072c857470383e7385964d6d1be2022-12-21T18:53:32ZengPublic Library of Science (PLoS)PLoS ONE1932-62032016-01-01111e014589310.1371/journal.pone.0145893Tracking the Development of Muscular Myoglobin Stores in Mysticete Calves.Rachel CartwrightCori NewtonKristi M WestJim RiceMisty NiemeyerKathryn BurekAndrew WilsonAlison N WallJean Remonida-BennettAreli TejedaSarah MessiLila Marcial-HernandezFor 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.http://europepmc.org/articles/PMC4720374?pdf=render |
| spellingShingle | Rachel Cartwright Cori Newton Kristi M West Jim Rice Misty Niemeyer Kathryn Burek Andrew Wilson Alison N Wall Jean Remonida-Bennett Areli Tejeda Sarah Messi Lila Marcial-Hernandez Tracking the Development of Muscular Myoglobin Stores in Mysticete Calves. PLoS ONE |
| 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 |
| url | http://europepmc.org/articles/PMC4720374?pdf=render |
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