Sex Differences in the Persistence of Natal Environmental Effects on Life Histories
Sex Differences in the Persistence of Natal Environmental Effects on Life Histories
复制标题
出生环境对生活史影响持续存在的性别差异
DOI：
10.1016/j.cub.2009.09.065
复制
发表时间：
2009
期刊：
影响因子：
9.2
通讯作者：
B. Sheldon
中科院分区：
文献类型：
--
作者：
T. Wilkin;B. Sheldon
早期环境对成年特征[1，2]和生活史轨迹的“银勺”效应被认为在脊椎动物中广泛存在[3-6]，并且很重要，因为它们意味着环境可以具有级联的跨代效应[7，8]。在这里，我们测试这样的影响，使用的样本5425大山雀（山雀）的纳塔尔和繁殖环境的详细信息。女性的生活史与繁殖条件密切相关，但我们几乎没有发现纳塔尔环境有任何持续影响的证据。相反，雄性的寿命和繁殖成功受到它们所处环境质量的影响。持续的环境影响，男性，但不是女性，包括差异性分配，有利于男性从高品质的环境和表型可塑性，使女性能够优化生殖决策，以目前的条件，从而掩盖任何残留的纳塔尔影响的潜在解释。因此，与最近的研究结果相反，早期环境的持续影响并不是普遍存在的，并且可能在单个物种内的性别之间存在差异，可能导致性别差异选择。进一步的工作应试图了解这些跨代环境影响可能发生的条件。
"Silver spoon" effects of early environments on adult characteristics [1, 2] and life-history trajectories are thought to be widespread among vertebrates [3–6] and are important because they imply that environments can have cascading transgenerational effects [7, 8]. Here we test for such effects by using a sample of 5425 great tits (Parus major) for which both natal and breeding environments were known in detail. Female life histories were strongly coupled with breeding conditions, but we found little evidence for any persistent effects of the natal environment. In contrast, life span and breeding success in males were influenced by the quality of the environment in which they were raised. Potential explanations for persistent environmental effects in males, but not females, include differential sex allocation benefiting males from high-quality environments and phenotypic plasticity allowing females to optimize reproductive decisions to current conditions, hence masking any residual natal effects. Thus, in contrast to findings of much recent work, persistent effects of the early environment are not all-pervasive and may differ between the sexes within a single species, potentially leading to sex-differential selection. Further work should attempt to understand the conditions under which these transgenerational environmental effects are likely to occur.