Morphological Variation and Its Molecular Mechanism of Amphibians and Reptiles

A special issue of Diversity (ISSN 1424-2818).

Deadline for manuscript submissions: 31 August 2025 | Viewed by 1052

Special Issue Editors

School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China
Interests: animal ecology; animal ethology; evolutionary biology; animal genomics
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Guest Editor
The University of Queensland, Brisbane, Australia
Interests: biostatistics; ecology; biodiversity
Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
Interests: conservation genetics and ecology of animals; salamanders; newts

Special Issue Information

Dear Colleagues,

Amphibians and reptiles show large morphological variations including geographic and intersexual variation. Investigating these variations and the potential molecular mechanisms underlying these variations is very important for understanding their adaptation to different environmental and climate conditions. Here, we are concerned with the following topics:

  • Morphological variation under climate and environmental change;
  • Geographical variation in morphological traits;
  • Morphological variation between sexes;
  • Genetic base of morphological variation.

This Special Issue gives an overview of current research results on the morphological variation of amphibians and reptiles and discovers the interactions between the adaptive evolution of morphological traits and environmental and climate changes. We accept reviews as well as short and long research papers that cover the above topics.

Dr. Wei Chen
Dr. Buddhi Dayananda
Dr. Jie Wang
Guest Editors

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Keywords

  • morphological trait 
  • altitudinal variation
  • latitudinal variation
  • intersexual variation
  • genetic mechanism

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Published Papers (1 paper)

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Research

10 pages, 2015 KiB  
Article
Altitudinal Variation of Limb Size of a High-Altitude Frog
by Xueyan Liu, Hongzhou Chen, Yanfang Wu, Huan Xiong, Song Liu, Huafan Ling and Wei Chen
Diversity 2025, 17(2), 80; https://doi.org/10.3390/d17020080 - 22 Jan 2025
Viewed by 589
Abstract
Geographical variation in morphological traits represents a significant ecological phenomenon. According to Allen’s rule, animals inhabiting cooler environments typically exhibit shorter extremities compared to those in warmer regions. While Allen’s rule has been extensively validated along latitudinal gradients, its applicability to altitudinal variation [...] Read more.
Geographical variation in morphological traits represents a significant ecological phenomenon. According to Allen’s rule, animals inhabiting cooler environments typically exhibit shorter extremities compared to those in warmer regions. While Allen’s rule has been extensively validated along latitudinal gradients, its applicability to altitudinal variation in morphological traits remains less well understood. In this study, we analyzed morphological data—including forelimb length and hindlimb length—from 492 individuals of Rana kukunoris from 26 populations to assess whether relative limb size in both sexes declines with altitude, aligning with Allen’s rule. However, this pattern exhibited geographical regional variation. In the northern and central regions, relative limb length consistently followed the predictions of Allen’s rule. In contrast, the southern region showed no significant altitudinal variation in limb proportions. These results highlight that the applicability of Allen’s rule may be modulated by regional environmental factors and altitude vertical differences, underscoring the need for a nuanced understanding of how local contexts influence morphological adaptations. Full article
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