中国东、南部的3个腔蚓属蚯蚓新物种  

Three New Earthworm Species of the Genus Metaphire(Oligochaeta:Megascolecidae)From Eastern and Southern China

作　　者：董彦 蒋际宝[2] 张金源 申智锋 孙静 DONG Yan;JIANG Ji-Bao;ZHANG Jin-Yuan;SHEN Zhi-Feng;SUN Jing(School of Materials and Environmental Engineering,Chengdu Technological University,Chengdu 611730;School of Agriculture and Biology,Shanghai Jiao Tong University,Shanghai 200240;College of Geography and Environmental Science,Henan University,Kaifeng 475004,China)

机构地区：[1]成都工业学院材料与环境工程学院,成都611730 [2]上海交通大学农业与生物学院,上海200240 [3]河南大学地理与环境学院,开封475004

出　　处：《动物学杂志》2024年第3期397-407,共11页Chinese Journal of Zoology

基　　金：国家自然科学基金项目(No.41877054,42077028);国家科技基础资源调查专项课题(No.2018FY100306,2018FY100301)。

摘　　要：本文报道了寡毛纲(Oligochaeta)巨蚓科(Megascolecidae)腔蚓属(Metaphire)3个新发现物种,分别是象头山腔蚓(M.xiangtoumontis Dong&Jiang sp.nov.),韩摆渡腔蚓(M.hanbaiduensis Dong&Sun sp.nov.)和长白山腔蚓(M.changbaimontis Dong&Shen sp.nov.)。象头山腔蚓受精囊孔2对,位于7/8~8/9节间,属于M.insulana物种群。韩摆渡腔蚓受精囊孔3对,位于6/7~8/9节间,属于M.houlleti物种群。长白山腔蚓受精囊孔2对,位于6/7~7/8节间,属于M.glandularis物种群。所有新物种均附有形态学描述、图片、与相似物种的形态学比较及与GenBank上亲缘关系相近物种的遗传距离计算分析。以上结果丰富了我国腔蚓属蚯蚓的物种多样性,并首次记录了采集于长白山国家级自然保护区的巨蚓科蚯蚓新物种。[Objectives]Metaphire is one of the dominant genera of earthworm family Megascolecidae and is widely distributed in eastern and southern China.However,there are relatively few new species reports of this genus in recent years.[Methods]Morphological taxonomy methods and DNA barcode technology were used to identify the new species.Genetic distance between species were calculated using the Bootstrap and p-distance methods.[Results]Herein,three new species of earthworms belonging to the genus Metaphire(Oligochaeta:Megascolecidae)from China were described.They are named M.xiangtoumontis Dong&Jiang sp.nov.,M.hanbaiduensis Dong&Sun sp.nov.and M.changbaimontis Dong&Shen sp.nov.(Fig.1﹣3).M.xiangtoumontis belongs to the M.insulana-group,it has two pairs of spermathecae in 7/8﹣8/9.M.hanbaiduensis belongs to the M.houlleti-group,it has three pairs of spermathecae in 6/7﹣8/9.M.changbaimontis belongs to the M.glandularis-group,and it has two pairs of spermathecae in 6/7﹣7/8.Morphological descriptions,pictures,morphological comparisons with similar species,and COI barcode data for all the new species were provided.Additionally,sequences of the other species that are closely related to the new species were retrieved from GenBank(Table 1).The pairwise distances between each new species and the other related species are greater than the interspecies genetic distance(usually less than 1%)and meets the range of intraspecies genetic distance(8.3%﹣13.0%,and above),so they have at least species level genetic difference(Table 2).[Conclusion]In summary,based on different morphological characters combined with the genetic evidence,we could conclude that the three new species are different from the previously described species and from each other.In addition,M.changbaimontis was the first new specie record of the earthworm genus Metaphire that collected in Changbai Mountain National Nature Reserve.

关 键 词：蚯蚓 巨蚓科 腔蚓属 新物种 

分 类 号：Q959[生物学—动物学]