No Cover Image

Journal article 52 views 7 downloads

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

Magali Meniri Orcid Logo, Elsa Evans, Faye J. Thompson Orcid Logo, Harry H. Marshall Orcid Logo, Hazel Nichols Orcid Logo, Gina Lewis, Lauren Holt, Emma Davey, Christopher Mitchell, Rufus A. Johnstone Orcid Logo, Michael A. Cant Orcid Logo, Jonathan D. Blount Orcid Logo

Ecology and Evolution, Volume: 12, Issue: 3, Start page: e8644

Swansea University Authors: Hazel Nichols Orcid Logo, Gina Lewis

  • ece3.8644.pdf

    PDF | Version of Record

    © 2022 The Authors. This is an open access article under the terms of the Creative Commons Attribution License

    Download (1.24MB)

Check full text

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...

Full description

Published in: Ecology and Evolution
ISSN: 2045-7758 2045-7758
Published: Wiley 2022
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa59563
Tags: Add Tag
No Tags, Be the first to tag this record!
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 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.
Keywords: constraint; cost; Mungos mungo; oxidative stress; reproduction; shielding
College: College of Science
Funders: Natural Environment Research Council Grant: NE/N01117/1
Issue: 3
Start Page: e8644