Morphological and Physiological Changes during Reproduction and Their Relationships to Reproductive Performance in a Capital Breeder
Morphological and Physiological Changes during Reproduction and Their Relationships to Reproductive Performance in a Capital Breeder
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首都种鸡繁殖过程中的形态和生理变化及其与繁殖性能的关系
DOI：
10.1086/670918
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发表时间：
2013
影响因子：
1.6
通讯作者：
D. DeNardo
中科院分区：
文献类型：
--
作者：
Z. Stahlschmidt;O. Lourdais;Sophie Lorioux;M. W. Butler;Jon R. Davis;K. Salin;Y. Voituron;D. DeNardo
当前的繁殖努力通常会通过改变躯体功能（例如生长或自我维持）来损害未来的繁殖价值。此外，繁殖效果常常取决于繁殖力和繁殖阶段，其中将资源分配给额外的后代和/或繁殖阶段导致成本增加。尽管有这些被广泛接受的普遍性，但生殖影响的个体间差异是常见的，但允许某些个体减轻这些有害影响的直接基础尚不清楚。我们连续测量了雌性儿童蟒蛇（Antaresia Childreni）在整个繁殖过程中的形态学（例如肌肉组织）和生理学（例如抗氧化防御）的几个变量，以研究这些特征在繁殖过程中如何变化，以及某些生理特征是否与某些个体的繁殖影响减弱有关。该首都种鸡的繁殖与形态和生理的变化有关，但只有形态变化随繁殖力和特定繁殖阶段而变化。在繁殖过程中，我们发现形态与自我维持之间存在负相关（例如，繁殖时肌肉分配的增加与免疫功能的降低有关）。此外，在当前的繁殖中分配更多资源的雌性在未来的繁殖中也会这样做，并且这些雌性更有效地吸收资源，在繁殖过程中经历了自我维持的损害减少（例如，氧化损伤和糖皮质激素水平较低），并且产下的孵化成功率更高。我们的结果表明，生理学特定方面（同化效率和氧化状态）的个体间差异可能会导致生殖性能的差异。
Current reproductive effort typically comes at a cost to future reproductive value by altering somatic function (e.g., growth or self-maintenance). Furthermore, effects of reproduction often depend on both fecundity and stage of reproduction, wherein allocation of resources into additional offspring and/or stages of reproduction results in increased costs. Despite these widely accepted generalities, interindividual variation in the effects of reproduction is common—yet the proximate basis that allows some individuals to mitigate these detrimental effects is unclear. We serially measured several variables of morphology (e.g., musculature) and physiology (e.g., antioxidant defenses) in female Children’s pythons (Antaresia childreni) throughout reproduction to examine how these traits change over the course of reproduction and whether certain physiological traits are associated with reduced effects of reproduction in some individuals. Reproduction in this capital breeder was associated with changes in both morphology and physiology, but only morphological changes varied with fecundity and among specific reproductive stages. During reproduction, we detected negative relationships between morphology and self-maintenance (e.g., increased muscle allocation to reproduction was related to reduced immune function). Additionally, females that allocated resources more heavily into current reproduction also did so during future reproduction, and these females assimilated resources more efficiently, experienced reduced detriments to self-maintenance (e.g., lower levels of oxidative damage and glucocorticoids) during reproduction, and produced clutches with greater hatching success. Our results suggest that interindividual variation in specific aspects of physiology (assimilation efficiency and oxidative status) may drive variation in reproductive performance.
影响因子：
7.4
作者：
Abdelmegeed, Mohamed A.;Moon, Kwan-Hoon;Hardwick, James P.;Gonzalez, Frank J.;Song, Byoung-Joon
通讯作者：
Song, Byoung-Joon
DOI：
10.1152/ajpendo.1995.268.3.e501
发表时间：
1995-03-01
影响因子：
5.1
作者：
BRILLON, DJ;ZHENG, B;MATTHEWS, DE
通讯作者：
MATTHEWS, DE
DOI：
10.1152/ajpendo.1996.271.2.e317
发表时间：
1996-08-01
影响因子：
5.1
作者：
Tataranni, PA;Larson, DE;Ravussin, E
通讯作者：
Ravussin, E