We compile a Mexican insular herpetofaunal checklist to estimate endemism, conservation status, island threats, net taxonomic turnover among six biogeographic provinces belonging to the Nearctic and Neotropical regions, and the relationships between island area and mainland distance versus species richness. We compile a checklist of insular herpetofaunal through performing a literature and collection review. We define the conservation status according to conservation Mexican law, the Red List of International Union for Conservation of Nature, and Environmental Vulnerability Scores. We determine threat percentages on islands according to the 11 major classes of threats to biodiversity. We estimate the net taxonomic turnover with beta diversity analysis between the Nearctic and Neotropical provinces. The Mexican insular herpetofauna is composed of 18 amphibian species, 204 species with 101 subspecies of reptiles, and 263 taxa in total. Endemism levels are 11.76% in amphibians, 53.57% in reptiles, and 27.91% being insular endemic taxa. Two conservation status systems classify the species at high extinction risk, while the remaining system suggests less concern. However, all systems indicate species lacking assessment. Human activities and exotic alien species are present on 60% of 131 islands. The taxonomic turnover value is high (0.89), with a clear herpetofaunal differentiation between the two biogeographic regions. The species–area and species–mainland distance relationships are positive. Insular herpetofauna faces a high percentage of threats, with the Neotropical provinces more heavily impacted. It is urgent to explore the remaining islands (3,079 islands) and better incorporate insular populations and species in ecological, evolutionary, and systematic studies. In the face of the biodiversity crisis, islands will play a leading role as a model to apply restoration and conservation strategies.

中文翻译：

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墨西哥岛屿爬行动物：组成、保护和生物地理模式

我们编制了一份墨西哥岛屿爬行动物清单，以估计属于近北极和新热带地区的六个生物地理省份的特有性、保护状况、岛屿威胁、净分类学更替，以及岛屿面积和大陆距离与物种丰富度之间的关系。我们通过文献和收藏回顾编制了一份岛状爬行动物清单。我们根据墨西哥保护法、国际自然保护联盟红色名录和环境脆弱性评分来定义保护状态。我们根据生物多样性面临的 11 类主要威胁来确定岛屿上的威胁百分比。我们通过近北极和新热带省之间的β多样性分析估计了净分类学周转率。墨西哥岛屿爬行动物由 18 种两栖动物、204 种爬行动物 101 亚种、263 个类群组成。两栖类的特有水平为 11.76%，爬行动物为 53.57%，岛屿特有类群为 27.91%。两个保护状态系统将物种归类为高灭绝风险，而其余系统则表明关注度较低。然而，所有系统都表明物种缺乏评估。131 个岛屿中的 60% 存在人类活动和外来物种。分类学周转值较高（0.89），两个生物地理区域之间的爬行动物区系分化明显。物种-面积和物种-大陆距离呈正相关。岛屿爬行动物面临很高比例的威胁，其中新热带省份受到的影响更为严重。迫切需要探索剩余的岛屿（3,079 个岛屿），并更好地将岛屿种群和物种纳入生态、进化和系统研究。面对生物多样性危机，岛屿将作为应用恢复和保护战略的典范发挥主导作用。