Altitudinal implications in organ size in the Andrew's toad (Bufo andrewsi)
Altitudinal implications in organ size in the Andrew's toad (Bufo andrewsi)
复制标题
海拔高度对安德鲁蟾蜍（Bufo andrewsi）器官大小的影响
DOI：
10.1163/15707563-00001068
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发表时间：
2019
期刊：
影响因子：
1.2
通讯作者：
Liao Wen Bo
中科院分区：
文献类型：
--
作者：
Zhao Li;Mai Chun Lan;Liu Guo Hou;Liao Wen Bo
物种内形态和生理性状的表型灵活性是动物分类群中的普遍现象。黑森规则预测，由于氧气供应和能量需求的变化，器官的大小应该随着海拔的增加而沿着环境梯度而增加。在这里，我们通过调查器官相对大小的地理变化来测试黑森规则的预测（即，心脏，肺，肝，肾）在十个种群的蟾蜍和rewsi沿环境梯度。我们发现，在所有种群中，这四个特定器官的相对大小并不随海拔或纬度而增加。我们也没有发现，在6个居群之间的器官的相对大小随着海拔升高而增加，这是不符合黑森的规则。我们的研究结果表明，氧气供应和能量需求不一定会影响器官大小在人群中的变化。
Phenotypic flexibility of morphological and physiological traits within species is a common phenomenon across animal taxa. Hesse’s rule predicts that the size of an organ should exhibit an increase with increasing altitude along environmental gradients due to changes in oxygen supply and energy demands. Here, we test the prediction of Hesse’s rule by investigating geographical variation in the relative size of organs (i.e., heart, lungs, liver, and kidneys) across ten populations ofBufo andrewsialong an environmental gradient. We found that the relative size of these four specific organs did not increase with altitude or latitude across all populations. We also did not find that the relative size of the organs increased with increasing altitude among six populations located at a similar latitude and longitude, which is inconsistent with Hesse’s rule. Our findings suggest that oxygen supply and energy demands do not necessarily affect variation in organ size among populations.