Mexico is home to 18 species of salamanders in the family Ambystomidae. Endangered Ambystoma altamirani Dugès, 1895 is a flagship species for the Lagos de Zempoala National Park (LZNP) in central Mexico, a protected area subject to numerous anthropogenic threats. Ambystoma altamirani populations in the Park have been little studied. In 2016–2017, we surveyed four streams where populations of the species had been previously reported. Habitat variables did not differ amongst streams and three had invasive rainbow trout, but we were only able to locate one A. altamirani population in Quila, a small, cold water stream lacking fish. We captured an average of 88 individuals (total n = 354; range 53–109) across all samples in this stream, including larvae, juveniles and adults. Population estimates ranged between 53 and 127 individuals. The absence in other streams suggests reductions in the spatial extent of A. altamirani in the LZNP. We suggest rainbow trout presence in numerous streams have led to local extirpation of A. altamirani and that removal and blockage of the invasive fish and a planned re-introduction strategy might help in restoring this flagship species.

中文翻译：

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墨西哥自然保护区中旗舰物种Ambystoma altamiraniDugès，1895年（Caudata，Ambystomatidae）下降的信号

墨西哥是Ambystomidae家族18种of的家。濒临灭绝的Ambystoma altamiraniDugès，1895年，是墨西哥中部拉各斯·德·曾波阿拉国家公园（LZNP）的旗舰物种，该保护区受到众多人为威胁。公园内的小白蚁种群很少进行研究。在2016–2017年，我们调查了先前曾报告该物种种群的四个溪流。溪流之间的生境变量没有差异，三个溪流具有入侵性虹鳟鱼，但是我们只能在基拉（Quila）找到一个A. altamirani种群，这是一条小型冷水流，缺少鱼类。我们在该样本流中的所有样本（包括幼虫，少年和成年）中平均捕获了88个人（总n = 354；范围53-109）。人口估计介于53至127个人之间。其他溪流中的缺乏表明LZNP中A. almiramiani的空间范​​围减少。我们认为虹鳟鱼在众多溪流中的存在已导致当地灭绝了A. altamirani，并且去除和阻塞了入侵鱼类以及计划中的重新引入策略可能有助于恢复这一旗舰物种。