Zeng WANG,Wei WU,Jinlong REN,et al.Evolution of Phenotype and Mitochondrial Genome Reveals Limbless and Body-elongated Squamates may Change Their Energy Basis for Locomotion[J].Asian Herpetological Research(AHR),2021,12(2):213-220.[doi:10.16373/j.cnki.ahr.200134]
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Evolution of Phenotype and Mitochondrial Genome Reveals Limbless and Body-elongated Squamates may Change Their Energy Basis for Locomotion
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Asian Herpetological Research[ISSN:2095-0357/CN:51-1735/Q]

2021 VoI.12 No.2
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Evolution of Phenotype and Mitochondrial Genome Reveals Limbless and Body-elongated Squamates may Change Their Energy Basis for Locomotion
Zeng WANG12 Wei WU12 Jinlong REN12 Changjun PENG1 Dechun JIANG1 Jiatang LI134*
1 CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China
2 University of Chinese Academy of Sciences, Beijing 100049, China
3 Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Yezin Nay Pyi Taw 05282, Myanmar
4 CAS Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming 650223, Yunan, China
limb-reduction mitogenome morphology selective pressure Squamata
Limb reduction in Squamata present the dramatic characteristic to focus and usually accompanied with particularly morphological modifications, impacting tremendous locomotion changing and might generate different energy requirement. Herein, we combined both morphological and mitochondrial genomic data to explore the evolution of phenotypic transformation and mitochondrial genome of limbless and body-elongated squamates. We collected phenotypic measurements of 503 individuals, representing limbed or limbless taxa across all major lineages in Squamata to investigate the morphological correlations with limb-reduction. Furthermore, we provided the mitochondrial genome of the representative limbless and elongated species Dibamus bourreti (Angel, 1935) to detect selective constraints on limbless clades with published mitogenomes of other squamate reptiles. Our results evidenced that body elongation had certain negative relationship with limb-reduction in Squamata lineage and Lacertilia lineage (R = –0.495, P < 2.2e-16; R= –0.332, P = 1.1e-13, respectively), while tail length showed slight correlation in both clades (R = 0.156, P = 4.3e-04; R= 0.192, P = 2.1e-05, respectively). Besides, detection demonstrated that ATP6 has experienced accelerated evolution among limbless lineages, suggesting selective pressure on mitogenomes may play an essential role in energy disparity for locomotion of limbed and limbless squamates.


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Last Update: 2021-06-25