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Centralized red muscle in Odontaspis ferox and the prevalence of regional endothermy in sharks

The order Lamniformes contains charismatic species such as the white shark Carcharodon carcharias and extinct megatooth shark Otodus megalodon, and is of particular interest given their influence on marine ecosystems, and because some members exhibit regional endothermy. However, there remains signi...

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Autores principales: Dolton, Haley R., Snelling, Edward P., Deaville, Robert, Jackson, Andrew L., Perkins, Matthew W., Bortoluzzi, Jenny R., Purves, Kevin, Curnick, David J., Pimiento, Catalina, Payne, Nicholas L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10645071/
https://www.ncbi.nlm.nih.gov/pubmed/37935371
http://dx.doi.org/10.1098/rsbl.2023.0331
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author Dolton, Haley R.
Snelling, Edward P.
Deaville, Robert
Jackson, Andrew L.
Perkins, Matthew W.
Bortoluzzi, Jenny R.
Purves, Kevin
Curnick, David J.
Pimiento, Catalina
Payne, Nicholas L.
author_facet Dolton, Haley R.
Snelling, Edward P.
Deaville, Robert
Jackson, Andrew L.
Perkins, Matthew W.
Bortoluzzi, Jenny R.
Purves, Kevin
Curnick, David J.
Pimiento, Catalina
Payne, Nicholas L.
author_sort Dolton, Haley R.
collection PubMed
description The order Lamniformes contains charismatic species such as the white shark Carcharodon carcharias and extinct megatooth shark Otodus megalodon, and is of particular interest given their influence on marine ecosystems, and because some members exhibit regional endothermy. However, there remains significant debate surrounding the prevalence and evolutionary origin of regional endothermy in the order, and therefore the development of phenomena such as gigantism and filter-feeding in sharks generally. Here we show a basal lamniform shark, the smalltooth sand tiger shark Odontaspis ferox, has centralized skeletal red muscle and a thick compact-walled ventricle; anatomical features generally consistent with regionally endothermy. This result, together with the recent discovery of probable red muscle endothermy in filter feeding basking sharks Cetorhinus maximus, suggests that this thermophysiology is more prevalent in the Lamniformes than previously thought, which in turn has implications for understanding the evolution of regional endothermy, gigantism, and extinction risk of warm-bodied shark species both past and present.
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spelling pubmed-106450712023-11-08 Centralized red muscle in Odontaspis ferox and the prevalence of regional endothermy in sharks Dolton, Haley R. Snelling, Edward P. Deaville, Robert Jackson, Andrew L. Perkins, Matthew W. Bortoluzzi, Jenny R. Purves, Kevin Curnick, David J. Pimiento, Catalina Payne, Nicholas L. Biol Lett Evolutionary Biology The order Lamniformes contains charismatic species such as the white shark Carcharodon carcharias and extinct megatooth shark Otodus megalodon, and is of particular interest given their influence on marine ecosystems, and because some members exhibit regional endothermy. However, there remains significant debate surrounding the prevalence and evolutionary origin of regional endothermy in the order, and therefore the development of phenomena such as gigantism and filter-feeding in sharks generally. Here we show a basal lamniform shark, the smalltooth sand tiger shark Odontaspis ferox, has centralized skeletal red muscle and a thick compact-walled ventricle; anatomical features generally consistent with regionally endothermy. This result, together with the recent discovery of probable red muscle endothermy in filter feeding basking sharks Cetorhinus maximus, suggests that this thermophysiology is more prevalent in the Lamniformes than previously thought, which in turn has implications for understanding the evolution of regional endothermy, gigantism, and extinction risk of warm-bodied shark species both past and present. The Royal Society 2023-11-08 /pmc/articles/PMC10645071/ /pubmed/37935371 http://dx.doi.org/10.1098/rsbl.2023.0331 Text en © 2023 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited.
spellingShingle Evolutionary Biology
Dolton, Haley R.
Snelling, Edward P.
Deaville, Robert
Jackson, Andrew L.
Perkins, Matthew W.
Bortoluzzi, Jenny R.
Purves, Kevin
Curnick, David J.
Pimiento, Catalina
Payne, Nicholas L.
Centralized red muscle in Odontaspis ferox and the prevalence of regional endothermy in sharks
title Centralized red muscle in Odontaspis ferox and the prevalence of regional endothermy in sharks
title_full Centralized red muscle in Odontaspis ferox and the prevalence of regional endothermy in sharks
title_fullStr Centralized red muscle in Odontaspis ferox and the prevalence of regional endothermy in sharks
title_full_unstemmed Centralized red muscle in Odontaspis ferox and the prevalence of regional endothermy in sharks
title_short Centralized red muscle in Odontaspis ferox and the prevalence of regional endothermy in sharks
title_sort centralized red muscle in odontaspis ferox and the prevalence of regional endothermy in sharks
topic Evolutionary Biology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10645071/
https://www.ncbi.nlm.nih.gov/pubmed/37935371
http://dx.doi.org/10.1098/rsbl.2023.0331
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