安徽农业科学2025，Vol.53Issue(24)：78-81,87,5.DOI:10.3969/j.issn.0517-6611.2025.24.015
基于COI条形码的厦门文昌鱼物种组成和体型分布研究
Species Composition and Body Size Distribution of Xiamen Amphioxus Based on COI Barcoding
摘要
Abstract
Based on DNA barcoding technology and COI sequences from the GenBank database,a systematic analysis was conducted on the species composition of amphioxus in the Huangcuo sea area of Xiamen.A total of 48 amphioxus specimens were examined,yielding COI se-quence fragments with a length of 492 bp.Through BLAST homology comparison in the GenBank database and phylogenetic tree construction,the results revealed 37 specimens of Branchiostoma japonicum(77%)and 11 specimens of B.belcheri(23%).These findings indicate that the amphioxus population in the Huangcuo sea area of Xiamen is a mixed group,consisting of both B.japonicum and B.belcheri,with B.japonicum being the current dominant species.This discovery updates the traditional understanding that the area was primarily inhabited by B.belcheri,while also suggesting potential ecological niche differentiation between the two species.Morphological analysis showed that the amphioxus popu-lation in Xiamen is predominantly composed of medium to large individuals,with such individuals accounting for 37.8%in the B.japonicum group and 27.3%in the B.belcheri group.AMOVA analysis indicated no significant differences in the mean body length and body weight be-tween the two species(P＞0.05).The results of this study provide a scientific basis for the targeted conservation and management of amphioxus resources in the Xiamen sea area.关键词
厦门/文昌鱼/COI条形码/体型分布/物种组成Key words
Xiamen/Amphioxus/COI barcoding/Body size distribution/Species composition分类
农业科技引用本文复制引用
郭香,宁岳,巫旗生,叶军,葛辉,游远新..基于COI条形码的厦门文昌鱼物种组成和体型分布研究[J].安徽农业科学,2025,53(24):78-81,87,5.基金项目
国家海洋水产种质资源库(2025) （2025）
福建省海洋服务与渔业高质量发展专项资金项目(FJHY-YYKJ-2024-1-13) （FJHY-YYKJ-2024-1-13）
福建省水产研究所科技引领专项(2024KJYL01,2025KJYL01) （2024KJYL01,2025KJYL01）
