Variation of bowhead whale progesterone concentrations across demographic groups and sample matrices
Bowhead whale Balaena mysticetus progesterone concentrations were measured in different sample matrices (serum, blubber, and urine) to investigate (1) concordance among sample type and (2) variation among life-history class. Samples were collected from subsistence-hunted whales (n = 86) taken from 1...
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ftdoajarticles:oai:doaj.org/article:647c51445cf146e18d18cba8ec81397e 2023-05-15T15:36:00+02:00 Variation of bowhead whale progesterone concentrations across demographic groups and sample matrices NM Kellar J Keliher ML Trego KN Catelani C Hanns JCC George C Rosa 2013-11-01T00:00:00Z https://doi.org/10.3354/esr00537 https://doaj.org/article/647c51445cf146e18d18cba8ec81397e EN eng Inter-Research https://www.int-res.com/abstracts/esr/v22/n1/p61-72/ https://doaj.org/toc/1863-5407 https://doaj.org/toc/1613-4796 1863-5407 1613-4796 doi:10.3354/esr00537 https://doaj.org/article/647c51445cf146e18d18cba8ec81397e Endangered Species Research, Vol 22, Iss 1, Pp 61-72 (2013) Zoology QL1-991 Botany QK1-989 article 2013 ftdoajarticles https://doi.org/10.3354/esr00537 2022-12-30T20:21:32Z Bowhead whale Balaena mysticetus progesterone concentrations were measured in different sample matrices (serum, blubber, and urine) to investigate (1) concordance among sample type and (2) variation among life-history class. Samples were collected from subsistence-hunted whales (n = 86) taken from 1999 to 2009. In general, irrespective of sample matrix, pregnant females had the highest concentrations by orders of magnitude, followed by mature animals of both sexes, and subadults had the lowest concentrations. Subadult males and females had similar progesterone concentrations in all sample matrices measured. When pregnant animals were included in our analyses, permuted regression models indicated a strong positive relationship between serum and blubber progesterone levels (r2 = 0.894, p = 0.0002). When pregnant animals were not included, we found no significant relationship between serum and blubber levels (r2 = 0.025, p = 0.224). These results suggest that progesterone concentrations are mirrored in these sample types over longer periods (i.e. on the order of weeks to months, time frame of reproductive changes) but not shorter periods (i.e. on the order of hours to days, time frame of daily fluctuations). This conclusion is consistent even for progesterone concentrations measured in females that had recently changed pregnancy states (either new mothers or newly pregnant animals), for which blubber progesterone levels seem to lag those in the serum. Finally, urine progesterone had statistically significant positive relationships with serum (r2 = 0.136, p = 0.0460) and blubber progesterone (r2 = 0.150, p = 0.0421). Our results suggest that progesterone concentrations first peak in the serum, then in the urine, and finally in the blubber. Article in Journal/Newspaper Balaena mysticetus bowhead whale Directory of Open Access Journals: DOAJ Articles Endangered Species Research 22 1 61 72 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
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Zoology QL1-991 Botany QK1-989 |
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Zoology QL1-991 Botany QK1-989 NM Kellar J Keliher ML Trego KN Catelani C Hanns JCC George C Rosa Variation of bowhead whale progesterone concentrations across demographic groups and sample matrices |
topic_facet |
Zoology QL1-991 Botany QK1-989 |
description |
Bowhead whale Balaena mysticetus progesterone concentrations were measured in different sample matrices (serum, blubber, and urine) to investigate (1) concordance among sample type and (2) variation among life-history class. Samples were collected from subsistence-hunted whales (n = 86) taken from 1999 to 2009. In general, irrespective of sample matrix, pregnant females had the highest concentrations by orders of magnitude, followed by mature animals of both sexes, and subadults had the lowest concentrations. Subadult males and females had similar progesterone concentrations in all sample matrices measured. When pregnant animals were included in our analyses, permuted regression models indicated a strong positive relationship between serum and blubber progesterone levels (r2 = 0.894, p = 0.0002). When pregnant animals were not included, we found no significant relationship between serum and blubber levels (r2 = 0.025, p = 0.224). These results suggest that progesterone concentrations are mirrored in these sample types over longer periods (i.e. on the order of weeks to months, time frame of reproductive changes) but not shorter periods (i.e. on the order of hours to days, time frame of daily fluctuations). This conclusion is consistent even for progesterone concentrations measured in females that had recently changed pregnancy states (either new mothers or newly pregnant animals), for which blubber progesterone levels seem to lag those in the serum. Finally, urine progesterone had statistically significant positive relationships with serum (r2 = 0.136, p = 0.0460) and blubber progesterone (r2 = 0.150, p = 0.0421). Our results suggest that progesterone concentrations first peak in the serum, then in the urine, and finally in the blubber. |
format |
Article in Journal/Newspaper |
author |
NM Kellar J Keliher ML Trego KN Catelani C Hanns JCC George C Rosa |
author_facet |
NM Kellar J Keliher ML Trego KN Catelani C Hanns JCC George C Rosa |
author_sort |
NM Kellar |
title |
Variation of bowhead whale progesterone concentrations across demographic groups and sample matrices |
title_short |
Variation of bowhead whale progesterone concentrations across demographic groups and sample matrices |
title_full |
Variation of bowhead whale progesterone concentrations across demographic groups and sample matrices |
title_fullStr |
Variation of bowhead whale progesterone concentrations across demographic groups and sample matrices |
title_full_unstemmed |
Variation of bowhead whale progesterone concentrations across demographic groups and sample matrices |
title_sort |
variation of bowhead whale progesterone concentrations across demographic groups and sample matrices |
publisher |
Inter-Research |
publishDate |
2013 |
url |
https://doi.org/10.3354/esr00537 https://doaj.org/article/647c51445cf146e18d18cba8ec81397e |
genre |
Balaena mysticetus bowhead whale |
genre_facet |
Balaena mysticetus bowhead whale |
op_source |
Endangered Species Research, Vol 22, Iss 1, Pp 61-72 (2013) |
op_relation |
https://www.int-res.com/abstracts/esr/v22/n1/p61-72/ https://doaj.org/toc/1863-5407 https://doaj.org/toc/1613-4796 1863-5407 1613-4796 doi:10.3354/esr00537 https://doaj.org/article/647c51445cf146e18d18cba8ec81397e |
op_doi |
https://doi.org/10.3354/esr00537 |
container_title |
Endangered Species Research |
container_volume |
22 |
container_issue |
1 |
container_start_page |
61 |
op_container_end_page |
72 |
_version_ |
1766366343134707712 |