Implications of the Last Glacial Maximum on the Genetic Diversity of Six Co-Distributed Taxa in the Baja California Peninsula

IF 3.6 2区环境科学与生态学 Q2 ECOLOGY Journal of Biogeography Pub Date : 2024-12-31 DOI:10.1111/jbi.15075

Anayeli Márquez-Márquez, Raúl Octavio Martínez-Rincón, Rafael Hernández-Guzmán, Francisco Javier García-De León

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Abstract

Aim

During the Last Glacial Maximum, the temperature in the Baja California Peninsula decreased and the precipitation increased compared to present climatic conditions. These changes influenced the geographic distribution and the demographic processes of plants and animals. This article aims to determine how Pleistocene and current climate impacted the geographic distribution and the genetic diversity patterns of six species co-distributed in the Baja California Peninsula.

Location

Northwest Mexico.

Taxon

A group of six species with desert affinities, two cacti (Pachycereus pringlei and Stenocereus gummosus), one spider (Pardosa sierra), one reptile (Dipsosaurus dorsalis) and two birds (Melanerpes uropygialis and Basilinna xantusii).

Methods

Meta-analysis of published microsatellite data was carried out for the previously mentioned species. Hierarchical generalised additive models (HGAMs) were used to assess the relationship between genetic diversity values and six abiotic predictors (latitude, elevation, current climate, habitat suitability, climatic stability and habitat suitability stability from the Last Glacial Maximum to the present). The change in the distribution range from the Last Glacial Maximum to the present was found using potential distribution models (PDMs).

Results

HGAMs revealed that M. uropygialis showed a significant relationship between genetic diversity and climatic stability, while the genetic diversity of D. dorsalis responded to the current climate. The genetic diversity of M. uropygialis and P. pringlei was affected by habitat suitability change while in B. xantusii, genetic diversity changed with current habitat suitability. According to potential distribution models, four areas of northwest Mexico functioned as a refuge during the Last Glacial Maximum: the south of the peninsula, the region between the western tip of the Vizcaíno peninsula and Cedros Island, the upper Gulf of California and the coasts of Sonora. However, only the spatial patterns of predicted genetic diversity of M. uropygialis coincide with the location of Pleistocene refugia.

Main Conclusions

No evidence was found of a concerted response of species to climate change during the Pleistocene, only one species showed evidence of discrete Pleistocene refugia and climatic stability and habitat suitability are not always conducive to higher genetic diversity values.

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末次盛冰期对下加利福尼亚半岛6个共分布分类群遗传多样性的影响

目的末次盛冰期与当前气候条件相比，下加利福尼亚半岛温度下降，降水增加。这些变化影响了动植物的地理分布和人口分布过程。本文旨在研究更新世和当前气候对下加利福尼亚半岛共分布的6种植物的地理分布和遗传多样性格局的影响。地点：墨西哥西北部。有沙漠亲缘关系的6种仙人掌，2种仙人掌（Pachycereus pringlei和Stenocereus gummosus）， 1种蜘蛛（Pardosa sierra）， 1种爬行动物（dorpsosaurus dorsalis）和2种鸟类（Melanerpes uropygialis和Basilinna xantusii）。方法对已发表的微卫星资料进行meta分析。采用层次广义加性模型（HGAMs）评估了遗传多样性值与6个非生物预测因子（纬度、海拔、当前气候、生境适宜性、气候稳定性和末次极大冰期至今的生境适宜性稳定性）之间的关系。利用势分布模型（pdm）分析了末次盛冰期到现在的分布范围变化。结果HGAMs结果显示，夜蛾的遗传多样性与气候稳定性有显著的关系，而夜蛾的遗传多样性则对当前气候有响应。鼠毛鼠和平叶鼠的遗传多样性受生境适宜性变化的影响，黄刺鼠的遗传多样性随生境适宜性变化而变化。根据潜在的分布模型，墨西哥西北部的四个地区在末次盛冰期期间充当了避难所的角色：半岛南部、Vizcaíno半岛西端与塞德罗斯岛之间的地区、加利福尼亚湾上游和索诺拉海岸。然而，只有预测的空间格局与更新世避难所的位置一致。主要结论更新世期间没有发现物种对气候变化的一致响应，只有一个物种表现出离散的更新世避难所的证据，气候稳定性和生境适宜性并不总是有利于较高的遗传多样性值。

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来源期刊

Journal of Biogeography 环境科学-生态学

CiteScore

7.70

自引率

5.10%

发文量

203

审稿时长

2.2 months

期刊介绍： Papers dealing with all aspects of spatial, ecological and historical biogeography are considered for publication in Journal of Biogeography. The mission of the journal is to contribute to the growth and societal relevance of the discipline of biogeography through its role in the dissemination of biogeographical research.