Untangling the oxidative cost of reproduction: An analysis in wild banded mongooses.
Untangling the oxidative cost of reproduction: An analysis in wild banded mongooses.
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DOI：
10.1002/ece3.8644
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发表时间：
2022-03
影响因子：
2.6
通讯作者：
Blount JD
中科院分区：
文献类型：
--
作者：
Meniri M;Evans E;Thompson FJ;Marshall HH;Nichols HJ;Lewis G;Holt L;Davey E;Mitchell C;Johnstone RA;Cant MA;Blount JD
繁殖成本在进化理论中扮演着核心角色，但其背后机制的身份仍然是一个谜。氧化应激已被假设为一个近似的机制，可以解释繁殖的成本。我们研究了氧化应激可以塑造生殖的三种途径。“氧化成本”假说提出，生殖努力产生氧化应激，而“氧化约束”和“氧化屏蔽”假说表明，母亲通过减少生殖努力或预先降低损伤水平来减轻这种成本。我们使用来自野生雌性带状猫鼬（Mungos mungo）的长期食物供应实验的数据来测试这三种机制。我们的研究结果表明，母体补充剂不影响氧化应激水平，或后代的生产和生存。然而，我们发现两种氧化机制在生殖过程中同时发生。有证据表明，与繁殖有关的氧化挑战，母亲试图通过减少繁殖期间的损害水平来减轻。这种缓解可能至关重要，因为母体氧化应激对后代的长期存活产生了负面影响。这项研究证明了野生动物纵向研究的价值，以突出相互关联的氧化机制，形成繁殖成本。繁殖成本在进化理论中扮演着核心角色，但其背后机制的身份仍然是一个谜。氧化应激已被假设为一个近似的机制，可以解释繁殖的成本。我们研究了三种途径，通过这些途径，氧化应激可以利用野生雌性带状猫鼬（Mungos mungo）长期食物供应实验的数据来塑造生殖。
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. 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 using data from a long‐term food provisioning experiment on wild female banded mongooses (Mungos mungo).
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影响因子：
2.3
作者：
Giordano, Marta;Costantini, David;Tschirren, Barbara
通讯作者：
Tschirren, Barbara
影响因子：
--
作者：
Alajbeg IZ;Lapić I;Rogić D;Vuletić L;Andabak Rogulj A;Illeš D;Knezović Zlatarić D;Badel T;Vrbanović E;Alajbeg I
通讯作者：
Alajbeg I
影响因子：
2.8
作者：
Costantini, David;Casasole, Giulia;Eens, Marcel
通讯作者：
Eens, Marcel
影响因子：
4.8
作者：
Bize, Pierre;Devevey, Godefroy;Christe, Philippe
通讯作者：
Christe, Philippe
影响因子：
1.4
作者：
BOUTIN, S
通讯作者：
BOUTIN, S