西安交通大学学报（医学版）2026，Vol.47Issue(2)：247-256,10.DOI:10.7652/jdyxb202602008
比较基因组学揭示涉禽的演化适应机制差异
Comparative genomics sheds light on the evolutionary adaptation of wading birds
熊子军 1姚雨璐 2高姝雅 2李波 3李生斌 2成诚2
作者信息
- 1. 西安交通大学国家卫生健康委法医学重点实验室,陕西 西安 710049||南昌大学江西医学院基础医学院,江西 南昌 330031||西安交通大学生物证据研究院/国家生物安全证据基地,陕西 西安 710049
- 2. 西安交通大学国家卫生健康委法医学重点实验室,陕西 西安 710049||西安交通大学生物证据研究院/国家生物安全证据基地,陕西 西安 710049
- 3. 深圳华大基因研究院,广东 深圳 518103
- 折叠
摘要
Abstract
Objective In this study,we employed comparative genomics to investigate the relationship between the genomic evolution of wading birds and the development of their habitat preferences and feeding habits.The aim was to elucidate the molecular basis of their adaptive evolution,thereby providing scientific foundation for biodiversity conservation of endangered species and informing biosecurity strategies.Methods We selected four representative wading bird species from the Pelecaniformes superorder.We conducted whole-genome sequencing,assembly,and annotation.Using comparative genomic approaches,we systematically analyzed genome structure,repetitive element distribution,and gene family evolution,with a particular focus on variations in carbohydrate-digestion-related genes.Other waterbird species were included for phylogenetic and convergent evolution analysis.Results The assembled genomes of the four species of wading birds had an average size of 1.21 Gb,containing an average of 15 647 annotated genes.Repetitive sequences accounted for 4%-10%of the genomes,showing a similar distribution pattern.Natural selection analysis identified several rapidly evolving genes associated with skeletal development,limb morphology,and beak formation.Comparative analysis with other long-legged waterbirds revealed a suite of genes demonstrating convergent evolution in limb and beak development.Furthermore,carnivorous wading birds,such as the crested ibis,exhibited significant differences in carbohydrate-digestion genes compared to omnivorous animals.Conclusion Biodiversity is fundamental to ecosystem function and biosecurity.Our research reveals the genomic underpinnings of adaptive evolution in wading birds,thereby providing key evidence for understanding how biodiversity promotes species'survival and adaptation to environmental change.These findings offer valuable genomic resources and scientific basis for evolutionary studies,the conservation of endangered aquatic birds,and the development of informed biosecurity strategies.关键词
涉禽/基因组学/趋同演化/物种保护/生物安全Key words
wading bird/genomics/convergent evolution/species conservation/biosafety分类
生物科学引用本文复制引用
熊子军,姚雨璐,高姝雅,李波,李生斌,成诚..比较基因组学揭示涉禽的演化适应机制差异[J].西安交通大学学报（医学版）,2026,47(2):247-256,10.
