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Related Experiment Video

Updated: Apr 23, 2026

Transabdominal Ultrasound for Pregnancy Diagnosis in Reeves' Muntjac Deer

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Published on: January 7, 2014

Beyond Geography: Climatic Gradients Shape Reeves's Muntjac Population Structure in Taiwan.

Yi-Lun Peng¹, Hsuan-Wien Chen², Chun-Yi Hsiao³

¹Institute of Ecology and Evolutionary Biology National Taiwan University Taipei Taiwan.

Ecology and Evolution

|April 22, 2026

Summary

This summary is machine-generated.

Genetic analysis of Reeves's muntjac in Taiwan reveals a significant north-south population split, driven by both geography and climate. This finding highlights shared environmental factors shaping genetic divergence across diverse mammal species.

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Last Updated: Apr 23, 2026

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Area of Science:

Evolutionary ecology
Population genetics
Mammalian divergence

Background:

Taiwan's mammals exhibit varied genetic divergence patterns, with some showing strong north-south splits despite mobility.
Recurring north-south genetic structure across diverse taxa suggests shared environmental gradients, not just historical isolation, drive population structure.
Previous studies may have missed fine-scale genetic structure in mobile species like Reeves's muntjac.

Purpose of the Study:

To investigate the genetic structure of Taiwanese Reeves's muntjac using genome-wide SNP data.
To understand the roles of geography and climate in shaping genetic divergence within Taiwan.
To explore the evolutionary history and demographic processes influencing muntjac populations.

Main Methods:

Genome-wide single-nucleotide polymorphism (SNP) data analyzed from 71 Taiwanese Reeves's muntjac and Chinese samples.
Demographic modeling to infer population history, including glacial isolation and gene flow.
Ecological niche modeling and selection scans to identify environmental drivers and adaptive genes.

Main Results:

Deep genetic divergence detected between Taiwanese and Chinese muntjac populations (~0.24 million years ago).
Significant north-south genetic subdivision identified within Taiwan (~0.06 million years ago).
Genetic differentiation strongly correlated with geographic and climatic factors, particularly temperature annual range (Bio7).
Identification of PLA2-associated genes potentially involved in thermal adaptation.

Conclusions:

Both geographic and environmental heterogeneity jointly shape mammalian genetic divergence in Taiwan.
The parallel north-south genetic split in diverse species underscores the influence of shared climatic and topographic factors in montane ecosystems.
Reeves's muntjac populations exhibit complex demographic histories shaped by environmental changes and gene flow.