Hopkins Gareth R, French Susannah S, Brodie Edmund D
Department of Biology and the Ecology Center, Utah State University, 5305 Old Main Hill, Logan, UT 84322, USA.
R Soc Open Sci. 2017 Jun 21;4(6):161057. doi: 10.1098/rsos.161057. eCollection 2017 Jun.
To accurately predict the impact of environmental change, it is necessary to assay effects of key interacting stressors on vulnerable organisms, and the potential resiliency of their populations. Yet, for the most part, these critical data are missing. We examined the effects of two common abiotic stressors predicted to interact with climate change, salinity and temperature, on the embryonic survival and development of a model freshwater vertebrate, the rough-skinned newt () from different populations. We found that salinity and temperature significantly interacted to affect newt embryonic survival and development, with the negative effects of salinity most pronounced at temperature extremes. We also found significant variation among, and especially within, populations, with different females varying in the performance of their eggs at different salinity-temperature combinations, possibly providing the raw material for future natural selection. Our results highlight the complex nature of predicting responses to climate change in space and time, and provide critical data towards that aim.
为了准确预测环境变化的影响，有必要分析关键相互作用应激源对脆弱生物体的影响及其种群的潜在恢复力。然而，在很大程度上，这些关键数据缺失。我们研究了预计与气候变化相互作用的两种常见非生物应激源——盐度和温度，对来自不同种群的模式淡水脊椎动物粗糙皮肤蝾螈（）胚胎存活和发育的影响。我们发现盐度和温度显著相互作用，影响蝾螈胚胎的存活和发育，盐度的负面影响在极端温度下最为明显。我们还发现种群之间尤其是种群内部存在显著差异，不同雌性的卵在不同盐度 - 温度组合下的表现各不相同，这可能为未来的自然选择提供原材料。我们的结果凸显了预测时空上对气候变化响应的复杂性，并为实现该目标提供了关键数据。
