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Untangling the oxidative cost of reproduction: An analysis in wild banded mongooses
Ecology and Evolution, Volume: 12, Issue: 3, Start page: e8644
Swansea University Authors: Hazel Nichols , Gina Lewis
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DOI (Published version): 10.1002/ece3.8644
Abstract
The cost of reproduction plays a central role in evolutionary theory, but the identity of the underlying mechanisms remains a puzzle. Oxidative stress has been hypothesized to be a proximate mechanism that may explain the cost of reproduction. We examine three pathways by which oxidative stress coul...
Published in: | Ecology and Evolution |
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ISSN: | 2045-7758 2045-7758 |
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Wiley
2022
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URI: | https://cronfa.swan.ac.uk/Record/cronfa59563 |
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2022-08-05T11:41:18.4237658 v2 59563 2022-03-09 Untangling the oxidative cost of reproduction: An analysis in wild banded mongooses 43ba12986bd7754484874c73eed0ebfe 0000-0002-4455-6065 Hazel Nichols Hazel Nichols true false 0d0629ea78bdba6c2f0762195d24f67b Gina Lewis Gina Lewis true false 2022-03-09 BGPS The cost of reproduction plays a central role in evolutionary theory, but the identity of the underlying mechanisms remains a puzzle. Oxidative stress has been hypothesized to be a proximate mechanism that may explain the cost of reproduction. We examine three pathways by which oxidative stress could shape reproduction. The “oxidative cost” hypothesis proposes that reproductive effort generates oxidative stress, while the “oxidative constraint” and “oxidative shielding” hypotheses suggest that mothers mitigate such costs through reducing reproductive effort or by pre‐emptively decreasing damage levels, respectively. We tested these three mechanisms using data from a long‐term food provisioning experiment on wild female banded mongooses (Mungos mungo). Our results show that maternal supplementation did not influence oxidative stress levels, or the production and survival of offspring. However, we found that two of the oxidative mechanisms co‐occur during reproduction. There was evidence of an oxidative challenge associated with reproduction that mothers attempted to mitigate by reducing damage levels during breeding. This mitigation is likely to be of crucial importance, as long‐term offspring survival was negatively impacted by maternal oxidative stress. This study demonstrates the value of longitudinal studies of wild animals in order to highlight the interconnected oxidative mechanisms that shape the cost of reproduction. Journal Article Ecology and Evolution 12 3 e8644 Wiley 2045-7758 2045-7758 constraint; cost; Mungos mungo; oxidative stress; reproduction; shielding 1 2 2022 2022-02-01 10.1002/ece3.8644 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University Natural Environment Research Council Grant: NE/N01117/1 2022-08-05T11:41:18.4237658 2022-03-09T14:32:36.8687358 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Magali Meniri 0000-0003-0400-3420 1 Elsa Evans 2 Faye J. Thompson 0000-0001-7581-2204 3 Harry H. Marshall 0000-0003-2120-243x 4 Hazel Nichols 0000-0002-4455-6065 5 Gina Lewis 6 Lauren Holt 7 Emma Davey 8 Christopher Mitchell 9 Rufus A. Johnstone 0000-0002-7155-6124 10 Michael A. Cant 0000-0002-1530-3077 11 Jonathan D. Blount 0000-0002-0016-0130 12 59563__22557__4c7ab642aa7a42729f7fc5a0d6da3da7.pdf ece3.8644.pdf 2022-03-09T14:32:36.8512123 Output 1295680 application/pdf Version of Record true © 2022 The Authors. This is an open access article under the terms of the Creative Commons Attribution License true eng http://creativecommons.org/licenses/by/4.0/ |
title |
Untangling the oxidative cost of reproduction: An analysis in wild banded mongooses |
spellingShingle |
Untangling the oxidative cost of reproduction: An analysis in wild banded mongooses Hazel Nichols Gina Lewis |
title_short |
Untangling the oxidative cost of reproduction: An analysis in wild banded mongooses |
title_full |
Untangling the oxidative cost of reproduction: An analysis in wild banded mongooses |
title_fullStr |
Untangling the oxidative cost of reproduction: An analysis in wild banded mongooses |
title_full_unstemmed |
Untangling the oxidative cost of reproduction: An analysis in wild banded mongooses |
title_sort |
Untangling the oxidative cost of reproduction: An analysis in wild banded mongooses |
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43ba12986bd7754484874c73eed0ebfe 0d0629ea78bdba6c2f0762195d24f67b |
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43ba12986bd7754484874c73eed0ebfe_***_Hazel Nichols 0d0629ea78bdba6c2f0762195d24f67b_***_Gina Lewis |
author |
Hazel Nichols Gina Lewis |
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Magali Meniri Elsa Evans Faye J. Thompson Harry H. Marshall Hazel Nichols Gina Lewis Lauren Holt Emma Davey Christopher Mitchell Rufus A. Johnstone Michael A. Cant Jonathan D. Blount |
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Ecology and Evolution |
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Wiley |
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The cost of reproduction plays a central role in evolutionary theory, but the identity of the underlying mechanisms remains a puzzle. Oxidative stress has been hypothesized to be a proximate mechanism that may explain the cost of reproduction. We examine three pathways by which oxidative stress could shape reproduction. The “oxidative cost” hypothesis proposes that reproductive effort generates oxidative stress, while the “oxidative constraint” and “oxidative shielding” hypotheses suggest that mothers mitigate such costs through reducing reproductive effort or by pre‐emptively decreasing damage levels, respectively. We tested these three mechanisms using data from a long‐term food provisioning experiment on wild female banded mongooses (Mungos mungo). Our results show that maternal supplementation did not influence oxidative stress levels, or the production and survival of offspring. However, we found that two of the oxidative mechanisms co‐occur during reproduction. There was evidence of an oxidative challenge associated with reproduction that mothers attempted to mitigate by reducing damage levels during breeding. This mitigation is likely to be of crucial importance, as long‐term offspring survival was negatively impacted by maternal oxidative stress. This study demonstrates the value of longitudinal studies of wild animals in order to highlight the interconnected oxidative mechanisms that shape the cost of reproduction. |
published_date |
2022-02-01T14:18:22Z |
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11.543985 |