Cargando…

Untangling the oxidative cost of reproduction: An analysis in wild banded mongooses

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Meniri, Magali, Evans, Elsa, Thompson, Faye J., Marshall, Harry H., Nichols, Hazel J., Lewis, Gina, Holt, Lauren, Davey, Emma, Mitchell, Christopher, Johnstone, Rufus A., Cant, Michael A., Blount, Jonathan D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8928901/
https://www.ncbi.nlm.nih.gov/pubmed/35342583
http://dx.doi.org/10.1002/ece3.8644
_version_ 1784670739055509504
author Meniri, Magali
Evans, Elsa
Thompson, Faye J.
Marshall, Harry H.
Nichols, Hazel J.
Lewis, Gina
Holt, Lauren
Davey, Emma
Mitchell, Christopher
Johnstone, Rufus A.
Cant, Michael A.
Blount, Jonathan D.
author_facet Meniri, Magali
Evans, Elsa
Thompson, Faye J.
Marshall, Harry H.
Nichols, Hazel J.
Lewis, Gina
Holt, Lauren
Davey, Emma
Mitchell, Christopher
Johnstone, Rufus A.
Cant, Michael A.
Blount, Jonathan D.
author_sort Meniri, Magali
collection PubMed
description 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.
format Online
Article
Text
id pubmed-8928901
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher John Wiley and Sons Inc.
record_format MEDLINE/PubMed
spelling pubmed-89289012022-03-24 Untangling the oxidative cost of reproduction: An analysis in wild banded mongooses Meniri, Magali Evans, Elsa Thompson, Faye J. Marshall, Harry H. Nichols, Hazel J. Lewis, Gina Holt, Lauren Davey, Emma Mitchell, Christopher Johnstone, Rufus A. Cant, Michael A. Blount, Jonathan D. Ecol Evol Research Articles 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. John Wiley and Sons Inc. 2022-03-08 /pmc/articles/PMC8928901/ /pubmed/35342583 http://dx.doi.org/10.1002/ece3.8644 Text en © 2022 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Articles
Meniri, Magali
Evans, Elsa
Thompson, Faye J.
Marshall, Harry H.
Nichols, Hazel J.
Lewis, Gina
Holt, Lauren
Davey, Emma
Mitchell, Christopher
Johnstone, Rufus A.
Cant, Michael A.
Blount, Jonathan D.
Untangling the oxidative cost of reproduction: An analysis in wild banded mongooses
title 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_short 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
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8928901/
https://www.ncbi.nlm.nih.gov/pubmed/35342583
http://dx.doi.org/10.1002/ece3.8644
work_keys_str_mv AT menirimagali untanglingtheoxidativecostofreproductionananalysisinwildbandedmongooses
AT evanselsa untanglingtheoxidativecostofreproductionananalysisinwildbandedmongooses
AT thompsonfayej untanglingtheoxidativecostofreproductionananalysisinwildbandedmongooses
AT marshallharryh untanglingtheoxidativecostofreproductionananalysisinwildbandedmongooses
AT nicholshazelj untanglingtheoxidativecostofreproductionananalysisinwildbandedmongooses
AT lewisgina untanglingtheoxidativecostofreproductionananalysisinwildbandedmongooses
AT holtlauren untanglingtheoxidativecostofreproductionananalysisinwildbandedmongooses
AT daveyemma untanglingtheoxidativecostofreproductionananalysisinwildbandedmongooses
AT mitchellchristopher untanglingtheoxidativecostofreproductionananalysisinwildbandedmongooses
AT johnstonerufusa untanglingtheoxidativecostofreproductionananalysisinwildbandedmongooses
AT cantmichaela untanglingtheoxidativecostofreproductionananalysisinwildbandedmongooses
AT blountjonathand untanglingtheoxidativecostofreproductionananalysisinwildbandedmongooses