Naidenko S V, Ivanov E A, Lukarevskiĭ V S, Hernandez-Blanko J A, Sorokin P A, Litvinov M N, Kotliar A K, Rozhnov V V
Izv Akad Nauk Ser Biol. 2011 May-Jun(3):358-63.
A noninvasive evaluation method of hypothalamo-pituitary-adrenals axis (HPA) activity in the Siberian tiger was verified. Comparison of the activity level of HPA in Siberian tigers in the wild and in captivity, and their alterations over the year was carried out. Significant seasonal deviations between activity levels of HPA in tigers in captivity were not found. In the wild, this level was significantly higher, reaching the maximum from November to January, which can be related with an unfavorable influence on tigers in low temperatures and deep snow cover.
一种用于评估东北虎下丘脑 - 垂体 - 肾上腺轴（HPA）活性的非侵入性评估方法得到了验证。对野生和圈养东北虎的HPA活性水平及其全年变化进行了比较。未发现圈养老虎的HPA活性水平存在显著的季节性差异。在野外，该水平显著更高，在11月至1月达到最高，这可能与低温和深厚积雪对老虎的不利影响有关。
