Relationship of morphometrics, total carotenoids, and total lipids with activity and sexual and spatial features in Euphausia superba
Morphological differences associated with sex or stage, together with total lipids and carotenoids, were studied in Euphausia superba as possible indicators of physiological condition. E. superba displays sexual dimorphism during growth. A group of mature males, called Males II herein, has a greater...
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ftpubmed:oai:pubmedcentral.nih.gov:7411069 2023-05-15T16:08:27+02:00 Relationship of morphometrics, total carotenoids, and total lipids with activity and sexual and spatial features in Euphausia superba Färber Lorda, Jaime Ceccaldi, Hubert J. 2020-08-06 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7411069/ http://www.ncbi.nlm.nih.gov/pubmed/32764584 https://doi.org/10.1038/s41598-020-69780-8 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7411069/ http://www.ncbi.nlm.nih.gov/pubmed/32764584 http://dx.doi.org/10.1038/s41598-020-69780-8 © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Sci Rep Article Text 2020 ftpubmed https://doi.org/10.1038/s41598-020-69780-8 2020-08-16T00:34:30Z Morphological differences associated with sex or stage, together with total lipids and carotenoids, were studied in Euphausia superba as possible indicators of physiological condition. E. superba displays sexual dimorphism during growth. A group of mature males, called Males II herein, has a greater abdominal length, suggesting that they are faster swimmers, a feature implying higher metabolic rates and a higher demand for protecting pigments like carotenoids. Mature Males II have proportionally lower lipids but higher total lipid-soluble carotenoids, a counterintuitive finding. Males II also have bigger eyes. Significant regressions with carotenoids were found for wet weight, abdominal length, and eye diameter. On a spatial analysis, population composition reflects reproductive activity. Males II would be in search of females for fecundation and, thus, are dominant in some areas. The PCA analysis of 10 allometric and biochemical variables show a distinct Males II group differing in morphology, carotenoids, and lipid contents. The carotenoid:lipid ratio was highest for Males II, supporting the hypothesis of the role of carotenoids in the activity of the species. Mature males may experience physiological stress during reproduction and probably die shortly afterwards. A relationship between activity, morphometrics, and carotenoid content seems evident, deserving further investigation. Text Euphausia superba PubMed Central (PMC) Scientific Reports 10 1 |
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Article Färber Lorda, Jaime Ceccaldi, Hubert J. Relationship of morphometrics, total carotenoids, and total lipids with activity and sexual and spatial features in Euphausia superba |
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Morphological differences associated with sex or stage, together with total lipids and carotenoids, were studied in Euphausia superba as possible indicators of physiological condition. E. superba displays sexual dimorphism during growth. A group of mature males, called Males II herein, has a greater abdominal length, suggesting that they are faster swimmers, a feature implying higher metabolic rates and a higher demand for protecting pigments like carotenoids. Mature Males II have proportionally lower lipids but higher total lipid-soluble carotenoids, a counterintuitive finding. Males II also have bigger eyes. Significant regressions with carotenoids were found for wet weight, abdominal length, and eye diameter. On a spatial analysis, population composition reflects reproductive activity. Males II would be in search of females for fecundation and, thus, are dominant in some areas. The PCA analysis of 10 allometric and biochemical variables show a distinct Males II group differing in morphology, carotenoids, and lipid contents. The carotenoid:lipid ratio was highest for Males II, supporting the hypothesis of the role of carotenoids in the activity of the species. Mature males may experience physiological stress during reproduction and probably die shortly afterwards. A relationship between activity, morphometrics, and carotenoid content seems evident, deserving further investigation. |
format |
Text |
author |
Färber Lorda, Jaime Ceccaldi, Hubert J. |
author_facet |
Färber Lorda, Jaime Ceccaldi, Hubert J. |
author_sort |
Färber Lorda, Jaime |
title |
Relationship of morphometrics, total carotenoids, and total lipids with activity and sexual and spatial features in Euphausia superba |
title_short |
Relationship of morphometrics, total carotenoids, and total lipids with activity and sexual and spatial features in Euphausia superba |
title_full |
Relationship of morphometrics, total carotenoids, and total lipids with activity and sexual and spatial features in Euphausia superba |
title_fullStr |
Relationship of morphometrics, total carotenoids, and total lipids with activity and sexual and spatial features in Euphausia superba |
title_full_unstemmed |
Relationship of morphometrics, total carotenoids, and total lipids with activity and sexual and spatial features in Euphausia superba |
title_sort |
relationship of morphometrics, total carotenoids, and total lipids with activity and sexual and spatial features in euphausia superba |
publisher |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7411069/ http://www.ncbi.nlm.nih.gov/pubmed/32764584 https://doi.org/10.1038/s41598-020-69780-8 |
genre |
Euphausia superba |
genre_facet |
Euphausia superba |
op_source |
Sci Rep |
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7411069/ http://www.ncbi.nlm.nih.gov/pubmed/32764584 http://dx.doi.org/10.1038/s41598-020-69780-8 |
op_rights |
© The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
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CC-BY |
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https://doi.org/10.1038/s41598-020-69780-8 |
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Scientific Reports |
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10 |
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