Phylogenetic climatic niche evolution and diversification of the Neurergus species (Salamandridae) in the Irano-Anatolian biodiversity hotspot

被引:4
|
作者
Khoshnamvand, Hadi [1 ]
Vaissi, Somaye [2 ]
Azimi, Maryam [1 ]
Ahmadzadeh, Faraham [1 ]
机构
[1] Shahid Beheshti Univ, Environm Sci Res Inst, Dept Biodivers & Ecosyst Management, Tehran, Iran
[2] Razi Univ, Fac Sci, Dept Biol, Kermanshah, Iran
来源
ECOLOGY AND EVOLUTION | 2024年 / 14卷 / 08期
关键词
ancestral niche occupancy; climate change; divergence dating; ecological niche evolution; evolutionarily significant units; Salamandridae; SPOTTED MOUNTAIN NEWT; MITOCHONDRIAL-DNA; GEOGRAPHIC-DISTRIBUTION; STRAUCHII STEINDACHNER; AMPHIBIA SALAMANDRIDAE; GENUS NEURERGUS; CROCATUS COPE; CAUDATA; CONSERVATION; RANGE;
D O I
10.1002/ece3.70105
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
This study explores how climate variables influenced the evolution and diversification of Neurergus newts within the Irano-Anatolian biodiversity hotspot. We use a dated phylogenetic tree and climatic niche models to analyze their evolutionary history and ecological preferences. Using genetic data from nuclear (KIAA) and mitochondrial (16s and 12s) genes, we estimate divergence times and identify four major Neurergus clades. The initial speciation event occurred approximately 11.3 million years ago, coinciding with the uplift of the Zagros and Anatolian mountains. This geological transformation isolated newt populations, likely triggering the first speciation event. By integrating potential geographic distribution with climate variables, we reconstruct ancestral niche occupancy profiles. This highlights the critical roles of temperature and precipitation in shaping Neurergus habitat preferences and distribution. We observe both phylogenetic niche conservatism and divergence, with niche divergence playing a dominant role in diversification. This research emphasizes the complex interplay of geography, climate, and ecology in speciation and the vulnerability of isolated mountain newt populations to environmental changes.
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页数:13
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