Oxidative stress in a capital breeder (Vipera aspis) facing pregnancy and water constraints

Type Article
Date 2017-05
Language English
Author(s) Stier AntoineORCID1, 2, Dupoue AndreazORCID3, Picard Damien2, Angelier Frederic4, Brischoux Francois4, Lourdais OlivierORCID4
Affiliation(s) 1 : Univ Glasgow, Inst Biodivers Anim Hlth & Comparat Med, Glasgow G12 8QQ, Lanark, Scotland.
2 : Univ Angers, F-49000 Angers, France.
3 : Univ Paris 06, iEES Paris, CNRS UPMC, UMR 7618, 7 Quai St Bernard, F-75005 Paris, France.
4 : CNRS Univ La Rochelle UMR 7372, Ctr Etud Biol Chize, F-79360 La Rochelle, Villiers En Boi, France.
Source Journal Of Experimental Biology (0022-0949) (Company Biologists Ltd), 2017-05 , Vol. 220 , N. 10 , P. 1792-1796
DOI 10.1242/jeb.156752
WOS© Times Cited 22
Keyword(s) Cost of reproduction, Oxidative shielding, Dehydration, Oxidative damage, Antioxidant, Water deprivation

The physiological mechanisms underlying the 'cost of reproduction' remain under debate, though oxidative stress has emerged as a potential candidate. The 'oxidative cost of reproduction' has received considerable attention with regards to food and antioxidant availability; however, the limitation of water availability has thus far been neglected. In this study, we experimentally examined the combined effect of pregnancy and water deprivation on oxidative status in a viviparous snake (Vipera aspis), a species naturally exposed to periods of water and food deprivation. We predicted a cumulative effect of pregnancy and dehydration on oxidative stress levels. Our results support the occurrence of an oxidative cost of reproduction as we found higher oxidative damage levels in pregnant females than in non-reproductive individuals, despite an upregulation of antioxidant defences. Surprisingly, water deprivation was associated with an up-regulation of antioxidant defences, and did not increase oxidative damage, either alone or in combination with reproduction.

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Stier Antoine, Dupoue Andreaz, Picard Damien, Angelier Frederic, Brischoux Francois, Lourdais Olivier (2017). Oxidative stress in a capital breeder (Vipera aspis) facing pregnancy and water constraints. Journal Of Experimental Biology, 220(10), 1792-1796. Publisher's official version : https://doi.org/10.1242/jeb.156752 , Open Access version : https://archimer.ifremer.fr/doc/00731/84308/