黑暗中的希望:发现与可能已经灭绝的微型地方性钝头蝾螈(Ambystoma amblycephalum)有关的种群

IF 0.9 Q4 ECOLOGY Neotropical Biodiversity Pub Date : 2022-02-20 DOI:10.1080/23766808.2022.2029323
A. Hernandez, C. Dufresnes, Jean Raffaëlli, Emmanuel Jelsch, S. Dubey, A. Santiago-Pérez, V. C. Rosas-Espinoza, P. Núñez
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引用次数: 2

摘要

摘要:我们报告了一个与钝头蝾螈(Ambystoma amblycephalum)有关的种群的发现,钝头蝾螈是一种来自墨西哥的微型地方性蝾螈,自1940年首次描述以来,科学上只证实了一次,现在可能已经灭绝。2018年,在墨西哥Michoacán州Nahuatzen的一个牛池中发现了童形和变态的成虫,以及卵和幼虫,距离类型地点约60公里(Tacícuaro)。形态计量学比较显示其与a . amblycephalum型序列高度相似,而线粒体DNA条形码(16S和对照区)显示其与参考序列非常接近(但不完美)。我们收集了该种群的生活史和生态数据,该种群可能是现存的唯一残片。其高度有限的分布和可能的低人口密度是灭绝风险高的标志,并对墨西哥许多小型地方性蝾螈的危急情况发出警报,因此呼吁立即采取保护行动。
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Hope in the dark: discovery of a population related to the presumably extinct micro-endemic Blunt-headed Salamander (Ambystoma amblycephalum)
ABSTRACT We report on the discovery of a population related to the Blunt-headed Salamander (Ambystoma amblycephalum), a micro-endemic axolotl from Mexico scientifically confirmed only once since its original description in 1940, and now presumably extinct. In 2018, paedomorphic and metamorphosed adults, as well as clutches and larvae, were found in a cattle pond at Nahuatzen, Michoacán state, Mexico, ~60 km away from the type locality (Tacícuaro). Morphometric comparisons suggested high similarity with the type series of A. amblycephalum, while mitochondrial DNA barcoding (16S and control region) revealed close (but imperfect) matching to a reference sequence. We gathered data on life history and ecology of this population, which could be the only extant relic of A. amblycephalum. Its highly limited distribution and presumably low population density are hallmarks for a high risk of extinction, and alarms on the critical situation of many micro-endemic salamanders of Mexico, hence calling for immediate conservation actions.
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来源期刊
Neotropical Biodiversity
Neotropical Biodiversity Environmental Science-Ecology
CiteScore
1.80
自引率
0.00%
发文量
39
审稿时长
24 weeks
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