Mountain goat nanny on the lookout. Photo by Frédéric Dulude‐de Broin. Predation is a major cause of mortality for many ungulate species, but whether natural variation of predation risk can impact other demographic traits such as reproduction is still up for debate. Based on long‐term environmental, demographic and physiological data, Dulude‐de Broin et al.'s study provides robust evidence that predation risk negatively impacts reproduction in mountain goats through chronic elevation of physiological stress. See paper by Dulude‐de Broin, F., Hamel, S., Mastromonacco, G.F. & Côté, S.D. Predation risk and mountain goat reproduction: Evidence for stressinduced breeding suppression in a wild ungulate. Funct. Ecol. 34, 1003‐1014. doi: 10.1111/1365-2435.13514.

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监视的石山羊保姆。FrédéricDulude-de Broin摄影。捕食是导致许多有蹄类动物死亡的主要原因，但捕食风险的自然变化是否会影响其他人口统计特征，例如生殖，仍需争论。基于长期的环境，人口统计和生理数据，Dulude-de Broin等人的研究提供了有力的证据，表明掠食风险通过长期升高生理压力对野山羊的繁殖产生负面影响。参见Dulude-de Broin，F.，Hamel，S.，Mastromonacco，GF＆Côté，SD的捕食风险和山羊繁殖：野生有蹄类动物应激诱导的繁殖抑制的证据。功能 Ecol。34，1003-1014。doi：10.1111 / 1365-2435.13514。