Yi Xi-Long, Liu Jing, Cao Mei-Ling, Xiong Jun, Deng Yuan-Ping, Wang Hui-Mei, Ma Ping-Ping, Liu Guo-Hua, Yang Hua
Research Center for Parasites & Vectors, College of Veterinary Medicine Hunan Agricultural University Changsha Hunan Province China.
College of Bioscience and Biotechnology Hunan Agricultural University Changsha Hunan Province China.
Ecol Evol. 2024 Jan 17;14(1):e10836. doi: 10.1002/ece3.10836. eCollection 2024 Jan.
The Golden apple snail, , is one of the world's 100 worst invasive alien species that is best known for its damage to wetland agriculture. It also acts as an intermediate host of some zoonotic parasites such as , posing threats to human public health and safety. Despite is being an important agricultural pest, the genetic information and population expansion history of this snail remains poorly understood in China. In this study, we analyzed the genetic variation and population genetics of populations in seven regions of China based on molecular markers of three mitochondrial (mt) genes. A total of 15 haplotypes were recognized based on single mt , , and , and eight haplotypes were identified using the concatenated genes. High haplotype diversity, moderate nucleotide diversity, low gene flow, and high rates of gene differentiation among the seven populations were detected. Shanghai and Yunnan populations showed higher genetic flow and very low genetic differentiation. The results of Tajima's , Fu's , and mismatch distribution showed that did not experience population expansion in China. Genetic distance based on haplotypes suggested that gene was more conserved than gene within . The phylogenetic analyses showed there may be two geographical lineages in the Chinese mainland. The present study may provide a new genetic marker to analyze , and results support more evidence for studying the genetic distribution of in China and contribute to a deeper understanding of its population genetics and evolutionary biology.
福寿螺是世界100种最严重的外来入侵物种之一，以对湿地农业造成破坏而闻名。它还作为一些人畜共患寄生虫的中间宿主，如，对人类公共健康和安全构成威胁。尽管福寿螺是一种重要的农业害虫，但在中国，这种螺的遗传信息和种群扩张历史仍知之甚少。在本研究中，我们基于三个线粒体（mt）基因的分子标记，分析了中国七个地区种群的遗传变异和群体遗传学。基于单个mt、和共识别出15个单倍型，使用串联基因鉴定出8个单倍型。检测到七个种群间单倍型多样性高、核苷酸多样性适中、基因流低以及基因分化率高。上海和云南种群显示出较高的基因流和极低的遗传分化。 Tajima's、Fu's检验和失配分布结果表明，福寿螺在中国没有经历种群扩张。基于单倍型的遗传距离表明，福寿螺基因比基因在内部更保守。系统发育分析表明，中国大陆可能存在两个地理谱系。本研究可能为分析福寿螺提供新的遗传标记，结果为研究福寿螺在中国的遗传分布提供了更多证据，有助于更深入地了解其群体遗传学和进化生物学。
