Bone microstructure and bone mineral density are not systemically different in Antarctic icefishes and related Antarctic notothenioids
Abstract Ancestors of the Antarctic icefishes (family Channichthyidae) were benthic and had no swim bladder, making it energetically expensive to rise from the ocean floor. To exploit the water column, benthopelagic icefishes were hypothesized to have evolved a skeleton with “reduced bone,” which gr...
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Online Access: | http://dx.doi.org/10.1111/joa.13537 https://onlinelibrary.wiley.com/doi/pdf/10.1111/joa.13537 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/joa.13537 |
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crwiley:10.1111/joa.13537 2024-09-09T19:05:16+00:00 Bone microstructure and bone mineral density are not systemically different in Antarctic icefishes and related Antarctic notothenioids Ashique, Amir M. Atake, Oghenevwogaga J. Ovens, Katie Guo, Ruiyi Pratt, Isaac V. Detrich, H. William Cooper, David M. L. Desvignes, Thomas Postlethwait, John H. Eames, B. Frank National Institutes of Health Natural Sciences and Engineering Research Council of Canada National Science Foundation 2021 http://dx.doi.org/10.1111/joa.13537 https://onlinelibrary.wiley.com/doi/pdf/10.1111/joa.13537 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/joa.13537 en eng Wiley http://creativecommons.org/licenses/by-nc-nd/4.0/ http://creativecommons.org/licenses/by-nc-nd/4.0/ Journal of Anatomy volume 240, issue 1, page 34-49 ISSN 0021-8782 1469-7580 journal-article 2021 crwiley https://doi.org/10.1111/joa.13537 2024-08-09T04:31:50Z Abstract Ancestors of the Antarctic icefishes (family Channichthyidae) were benthic and had no swim bladder, making it energetically expensive to rise from the ocean floor. To exploit the water column, benthopelagic icefishes were hypothesized to have evolved a skeleton with “reduced bone,” which gross anatomical data supported. Here, we tested the hypothesis that changes to icefish bones also occurred below the level of gross anatomy. Histology and micro‐CT imaging of representative craniofacial bones (i.e., ceratohyal, frontal, dentary, and articular) of extant Antarctic fish species specifically evaluated two features that might cause the appearance of “reduced bone”: bone microstructure (e.g., bone volume fraction and structure linear density) and bone mineral density (BMD, or mass of mineral per volume of bone). Measures of bone microstructure were not consistently different in bones from the icefishes Chaenocephalus aceratus and Champsocephalus gunnari , compared to the related benthic notothenioids Notothenia coriiceps and Gobionotothen gibberifrons . Some quantitative measures, such as bone volume fraction and structure linear density, were significantly increased in some icefish bones compared to homologous bones of non‐icefish. However, such differences were rare, and no microstructural measures were consistently different in icefishes across all bones and species analyzed. Furthermore, BMD was similar among homologous bones of icefish and non‐icefish Antarctic notothenioids. In summary, “reduced bone” in icefishes was not due to systemic changes in bone microstructure or BMD, raising the prospect that “reduced bone” in icefish occurs only at the gross anatomic level (i.e., smaller or fewer bones). Given that icefishes exhibit delayed skeletal development compared to non‐icefish Antarctic fishes, combining these phenotypic data with genomic data might clarify genetic changes driving skeletal heterochrony. Article in Journal/Newspaper Antarc* Antarctic Icefish Wiley Online Library Antarctic The Antarctic Journal of Anatomy 240 1 34 49 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Ancestors of the Antarctic icefishes (family Channichthyidae) were benthic and had no swim bladder, making it energetically expensive to rise from the ocean floor. To exploit the water column, benthopelagic icefishes were hypothesized to have evolved a skeleton with “reduced bone,” which gross anatomical data supported. Here, we tested the hypothesis that changes to icefish bones also occurred below the level of gross anatomy. Histology and micro‐CT imaging of representative craniofacial bones (i.e., ceratohyal, frontal, dentary, and articular) of extant Antarctic fish species specifically evaluated two features that might cause the appearance of “reduced bone”: bone microstructure (e.g., bone volume fraction and structure linear density) and bone mineral density (BMD, or mass of mineral per volume of bone). Measures of bone microstructure were not consistently different in bones from the icefishes Chaenocephalus aceratus and Champsocephalus gunnari , compared to the related benthic notothenioids Notothenia coriiceps and Gobionotothen gibberifrons . Some quantitative measures, such as bone volume fraction and structure linear density, were significantly increased in some icefish bones compared to homologous bones of non‐icefish. However, such differences were rare, and no microstructural measures were consistently different in icefishes across all bones and species analyzed. Furthermore, BMD was similar among homologous bones of icefish and non‐icefish Antarctic notothenioids. In summary, “reduced bone” in icefishes was not due to systemic changes in bone microstructure or BMD, raising the prospect that “reduced bone” in icefish occurs only at the gross anatomic level (i.e., smaller or fewer bones). Given that icefishes exhibit delayed skeletal development compared to non‐icefish Antarctic fishes, combining these phenotypic data with genomic data might clarify genetic changes driving skeletal heterochrony. |
author2 |
National Institutes of Health Natural Sciences and Engineering Research Council of Canada National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Ashique, Amir M. Atake, Oghenevwogaga J. Ovens, Katie Guo, Ruiyi Pratt, Isaac V. Detrich, H. William Cooper, David M. L. Desvignes, Thomas Postlethwait, John H. Eames, B. Frank |
spellingShingle |
Ashique, Amir M. Atake, Oghenevwogaga J. Ovens, Katie Guo, Ruiyi Pratt, Isaac V. Detrich, H. William Cooper, David M. L. Desvignes, Thomas Postlethwait, John H. Eames, B. Frank Bone microstructure and bone mineral density are not systemically different in Antarctic icefishes and related Antarctic notothenioids |
author_facet |
Ashique, Amir M. Atake, Oghenevwogaga J. Ovens, Katie Guo, Ruiyi Pratt, Isaac V. Detrich, H. William Cooper, David M. L. Desvignes, Thomas Postlethwait, John H. Eames, B. Frank |
author_sort |
Ashique, Amir M. |
title |
Bone microstructure and bone mineral density are not systemically different in Antarctic icefishes and related Antarctic notothenioids |
title_short |
Bone microstructure and bone mineral density are not systemically different in Antarctic icefishes and related Antarctic notothenioids |
title_full |
Bone microstructure and bone mineral density are not systemically different in Antarctic icefishes and related Antarctic notothenioids |
title_fullStr |
Bone microstructure and bone mineral density are not systemically different in Antarctic icefishes and related Antarctic notothenioids |
title_full_unstemmed |
Bone microstructure and bone mineral density are not systemically different in Antarctic icefishes and related Antarctic notothenioids |
title_sort |
bone microstructure and bone mineral density are not systemically different in antarctic icefishes and related antarctic notothenioids |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/joa.13537 https://onlinelibrary.wiley.com/doi/pdf/10.1111/joa.13537 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/joa.13537 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Icefish |
genre_facet |
Antarc* Antarctic Icefish |
op_source |
Journal of Anatomy volume 240, issue 1, page 34-49 ISSN 0021-8782 1469-7580 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1111/joa.13537 |
container_title |
Journal of Anatomy |
container_volume |
240 |
container_issue |
1 |
container_start_page |
34 |
op_container_end_page |
49 |
_version_ |
1809819274974330880 |