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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Springer Science and Business Media LLC
2020
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Online Access: | https://archimer.ifremer.fr/doc/00643/75471/76296.pdf https://archimer.ifremer.fr/doc/00643/75471/76297.pdf https://doi.org/10.1038/s41598-020-69780-8 https://archimer.ifremer.fr/doc/00643/75471/ |
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ftarchimer:oai:archimer.ifremer.fr:75471 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 application/pdf https://archimer.ifremer.fr/doc/00643/75471/76296.pdf https://archimer.ifremer.fr/doc/00643/75471/76297.pdf https://doi.org/10.1038/s41598-020-69780-8 https://archimer.ifremer.fr/doc/00643/75471/ eng eng Springer Science and Business Media LLC https://archimer.ifremer.fr/doc/00643/75471/76296.pdf https://archimer.ifremer.fr/doc/00643/75471/76297.pdf doi:10.1038/s41598-020-69780-8 https://archimer.ifremer.fr/doc/00643/75471/ info:eu-repo/semantics/openAccess restricted use Scientific Reports (2045-2322) (Springer Science and Business Media LLC), 2020-08 , Vol. 10 , N. 1 , P. 13177 (15p.) text Publication info:eu-repo/semantics/article 2020 ftarchimer https://doi.org/10.1038/s41598-020-69780-8 2023-03-14T23:55:18Z 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. Article in Journal/Newspaper Euphausia superba Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Scientific Reports 10 1 |
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Open Polar |
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Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
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ftarchimer |
language |
English |
description |
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 |
Article in Journal/Newspaper |
author |
Färber Lorda, Jaime Ceccaldi, Hubert J. |
spellingShingle |
Färber Lorda, Jaime Ceccaldi, Hubert J. Relationship of morphometrics, total carotenoids, and total lipids with activity and sexual and spatial features in Euphausia superba |
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 |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
https://archimer.ifremer.fr/doc/00643/75471/76296.pdf https://archimer.ifremer.fr/doc/00643/75471/76297.pdf https://doi.org/10.1038/s41598-020-69780-8 https://archimer.ifremer.fr/doc/00643/75471/ |
genre |
Euphausia superba |
genre_facet |
Euphausia superba |
op_source |
Scientific Reports (2045-2322) (Springer Science and Business Media LLC), 2020-08 , Vol. 10 , N. 1 , P. 13177 (15p.) |
op_relation |
https://archimer.ifremer.fr/doc/00643/75471/76296.pdf https://archimer.ifremer.fr/doc/00643/75471/76297.pdf doi:10.1038/s41598-020-69780-8 https://archimer.ifremer.fr/doc/00643/75471/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1038/s41598-020-69780-8 |
container_title |
Scientific Reports |
container_volume |
10 |
container_issue |
1 |
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1766404509367533568 |