Increasing body size and fecundity in a salamander over four decades, possibly due to global warming
Increasing body size and fecundity in a salamander over four decades, possibly due to global warming
复制标题
四十年来蝾螈的体型和繁殖力不断增加，可能是由于全球变暖
DOI：
10.1093/biolinnean/blaa201
复制
发表时间：
2021
影响因子：
1.9
通讯作者：
Kusano Tamotsu
中科院分区：
文献类型：
--
作者：
Okamiya Hisanori;Hayase Nagatoshi;Kusano Tamotsu
最近的气候变化已经被证明影响了一些动物的表型特征，如身体大小和繁殖力。评估一个物种对气候变化的反应对于预测一个种群的未来是很重要的。我们比较了在其地理范围内广泛的纬度范围内收集的Lentium繁殖火蜥蜴的历史和当代的身体大小和卵子大小的测量结果，得出结论：在过去的40年里，该物种的身体大小和窝卵大小经历了显著的增长。尽管气候变化导致的体型减少在其他物种中得到了很好的记录，但体型增加的报告却很少见。此外，我们还发现，温度和降水的增加与纬度无关，但在高纬度种群中，个体大小和窝卵数增加的比例更大。我们的结果表明，即使在一个物种内部，对气候变化的反应幅度也取决于种群的地理位置。
Recent climate change has been shown to affect phenotypic traits, such as body size and fecundity, in some animals. It is important to assess the response of a species to climate change for predicting a population’s future. We compared historic and contemporary body size and clutch size measurements in the lentic breeding salamander,Hynobius tokyoensis, collected from a wide range of latitudes in its geographical range and concluded that the species has gone through significant increases in body size and clutch size over the last four decades. Although a decrease in body size due to climate change is well documented for other species, reports of an increase in body size are rare. In addition, we found that increases in temperature and precipitation were constant regardless of latitude, but that the ratios of increase in body size and clutch size were greater in high-latitude populations. Our results suggest that, even within a species, the magnitude of the response to climate change depends on the geography of the population.