Multi-year longitudinal profiles of cortisol and corticosterone recovered from baleen of North Atlantic right whales (Eubalaena glacialis)
© The Author(s), 2017. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution. The definitive version was published in General and Comparative Endocr...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/9382 2023-05-15T16:08:16+02:00 Multi-year longitudinal profiles of cortisol and corticosterone recovered from baleen of North Atlantic right whales (Eubalaena glacialis) Hunt, Kathleen E. Lysiak, Nadine S. J. Moore, Michael J. Rolland, Rosalind M. 2017-09 https://hdl.handle.net/1912/9382 en_US eng https://doi.org/10.1016/j.ygcen.2017.09.009 https://hdl.handle.net/1912/9382 Marine mammals Cetacea Baleen hormones Cortisol Corticosterone Stress Preprint 2017 ftwhoas https://doi.org/10.1016/j.ygcen.2017.09.009 2022-05-28T23:00:04Z © The Author(s), 2017. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution. The definitive version was published in General and Comparative Endocrinology 254 (2017): 50-59, doi:10.1016/j.ygcen.2017.09.009. Research into stress physiology of mysticete whales has been hampered by difficulty in obtaining repeated physiological samples from individuals over time. We investigated whether multi-year longitudinal records of glucocorticoids can be reconstructed from serial sampling along full-length baleen plates (representing ~10 years of baleen growth), using baleen recovered from two female North Atlantic right whales (Eubalaena glacialis) of known reproductive history. Cortisol and corticosterone were quantified with immunoassay of subsamples taken every 4 cm (representing ~60 d time intervals) along a full-length baleen plate from each female. In both whales, corticosterone was significantly elevated during known pregnancies (inferred from calf sightings and necropsy data) as compared to intercalving intervals; cortisol was significantly elevated during pregnancies in one female but not the other. Within intercalving intervals, corticosterone was significantly elevated during the first year (lactation year) and/or the second year (post-lactation year) as compared to later years of the intercalving interval, while cortisol showed more variable patterns. Cortisol occasionally showed brief high elevations (“spikes”) not paralleled by corticosterone, suggesting that the two glucocorticoids might be differentially responsive to certain stressors. Generally, immunoreactive corticosterone was present in higher concentration in baleen than immunoreactive cortisol; corticosterone:cortisol ratio was usually >4 and was highly variable in both individuals. Further investigation of baleen cortisol and corticosterone profiles could prove fruitful for elucidating long-term, ... Report Eubalaena glacialis North Atlantic Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) General and Comparative Endocrinology 254 50 59 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Marine mammals Cetacea Baleen hormones Cortisol Corticosterone Stress |
spellingShingle |
Marine mammals Cetacea Baleen hormones Cortisol Corticosterone Stress Hunt, Kathleen E. Lysiak, Nadine S. J. Moore, Michael J. Rolland, Rosalind M. Multi-year longitudinal profiles of cortisol and corticosterone recovered from baleen of North Atlantic right whales (Eubalaena glacialis) |
topic_facet |
Marine mammals Cetacea Baleen hormones Cortisol Corticosterone Stress |
description |
© The Author(s), 2017. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution. The definitive version was published in General and Comparative Endocrinology 254 (2017): 50-59, doi:10.1016/j.ygcen.2017.09.009. Research into stress physiology of mysticete whales has been hampered by difficulty in obtaining repeated physiological samples from individuals over time. We investigated whether multi-year longitudinal records of glucocorticoids can be reconstructed from serial sampling along full-length baleen plates (representing ~10 years of baleen growth), using baleen recovered from two female North Atlantic right whales (Eubalaena glacialis) of known reproductive history. Cortisol and corticosterone were quantified with immunoassay of subsamples taken every 4 cm (representing ~60 d time intervals) along a full-length baleen plate from each female. In both whales, corticosterone was significantly elevated during known pregnancies (inferred from calf sightings and necropsy data) as compared to intercalving intervals; cortisol was significantly elevated during pregnancies in one female but not the other. Within intercalving intervals, corticosterone was significantly elevated during the first year (lactation year) and/or the second year (post-lactation year) as compared to later years of the intercalving interval, while cortisol showed more variable patterns. Cortisol occasionally showed brief high elevations (“spikes”) not paralleled by corticosterone, suggesting that the two glucocorticoids might be differentially responsive to certain stressors. Generally, immunoreactive corticosterone was present in higher concentration in baleen than immunoreactive cortisol; corticosterone:cortisol ratio was usually >4 and was highly variable in both individuals. Further investigation of baleen cortisol and corticosterone profiles could prove fruitful for elucidating long-term, ... |
format |
Report |
author |
Hunt, Kathleen E. Lysiak, Nadine S. J. Moore, Michael J. Rolland, Rosalind M. |
author_facet |
Hunt, Kathleen E. Lysiak, Nadine S. J. Moore, Michael J. Rolland, Rosalind M. |
author_sort |
Hunt, Kathleen E. |
title |
Multi-year longitudinal profiles of cortisol and corticosterone recovered from baleen of North Atlantic right whales (Eubalaena glacialis) |
title_short |
Multi-year longitudinal profiles of cortisol and corticosterone recovered from baleen of North Atlantic right whales (Eubalaena glacialis) |
title_full |
Multi-year longitudinal profiles of cortisol and corticosterone recovered from baleen of North Atlantic right whales (Eubalaena glacialis) |
title_fullStr |
Multi-year longitudinal profiles of cortisol and corticosterone recovered from baleen of North Atlantic right whales (Eubalaena glacialis) |
title_full_unstemmed |
Multi-year longitudinal profiles of cortisol and corticosterone recovered from baleen of North Atlantic right whales (Eubalaena glacialis) |
title_sort |
multi-year longitudinal profiles of cortisol and corticosterone recovered from baleen of north atlantic right whales (eubalaena glacialis) |
publishDate |
2017 |
url |
https://hdl.handle.net/1912/9382 |
genre |
Eubalaena glacialis North Atlantic |
genre_facet |
Eubalaena glacialis North Atlantic |
op_relation |
https://doi.org/10.1016/j.ygcen.2017.09.009 https://hdl.handle.net/1912/9382 |
op_doi |
https://doi.org/10.1016/j.ygcen.2017.09.009 |
container_title |
General and Comparative Endocrinology |
container_volume |
254 |
container_start_page |
50 |
op_container_end_page |
59 |
_version_ |
1766404335114125312 |