集美大学学报（自然科学版）2026，Vol.31Issue(1)：23-33,11.DOI:10.19715/j.jmuzr.2026.01.03
闽浙沿海棘头梅童鱼种群遗传分化的基因组解析
Genomic Analysis of Genetic Differentiation in Populations of Collichthys lucidus Along the Fujian-Zhejiang Coast
摘要
Abstract
The Fujian-Zhejiang coastal region,located at the intersection of the East China Sea and South China Sea,represents a critical"hotspot"for marine biodiversity characterized by both species divergence and in-tegration.Collichthys lucidus,a shallow-sea teleost species,has diverged into distinct northern and southern linea-ges in this region.This species serves as an ideal model for investigating the genetic mechanisms underpinning speciation and adaptive evolution.To resolve the genetic structure at the interface of these lineages and elucidate the drivers of genetic differentiation,the whole-genome sequencing data from four geographically distinct popula-tions of C.lucidus(Zhoushan[ZS],Ruian[RA],Ningde[ND],and Xiamen[XM])was analyzed.Findings con-firmed significant genetic differentiation between the northern and southern populations,with the boundary local-ized between Ningde and Ruian,aligning with the historical Taiwan land bridge.Pairwise genetic differentiation(FST)analysis revealed that genetic divergence was greater between the geographically distant ZS-XM popula-tions than between the closer ND-RA populations.Among the chromosomes analyzed,sex chromosomes(Chr.1,Chr.7,and Chr.8)exhibited the highest levels of genetic differentiation.Sliding window analysis further revealed a pattern of elevated differentiation at one terminal of most chromosomes,except Chr.1.Selective sweep and func-tional enrichment analyses identified 997 highly differentiated genes significantly enriched in pathways related to energy metabolism,immune defense,and environmental stress response.These results suggest that geographic iso-lation,environmental selection,and the coordinated effects of sex chromosome divergence and centromeric struc-ture have collectively driven the genetic differentiation of C.lucidus'northern and southern lineages.关键词
棘头梅童鱼/全基因组重测序/物种分化/适应性进化/性染色体/地理隔离/闽浙沿海Key words
Collichthys lucidus/whole-genome resequencing/speciation/adaptive evolution/sex chromo-somes/geographic isolation/Fujian-Zhejiang Coast分类
农业科技引用本文复制引用
苏财源,蔡明夷,邵鑫斌,王志勇,李军,叶坤..闽浙沿海棘头梅童鱼种群遗传分化的基因组解析[J].集美大学学报（自然科学版）,2026,31(1):23-33,11.基金项目
国家自然科学基金项目(31872553) （31872553）
福建省自然科学基金项目(2023J01768) （2023J01768）
温州市社会发展科技项目(ZS2020001) （ZS2020001）
福建省海洋渔业资源与生态环境重点实验室开放基金项目(2023JD06) （2023JD06）
农业农村部东海海水健康养殖重点实验室开放课题(2022ESHML05) （2022ESHML05）
中央引导地方科技发展资金项目(2023ZY1056) （2023ZY1056）
