文献类型：期刊文献

中文题名：Integrative taxonomy unveils a new species of Dugesia(Platyhelminthes,Tricladida,Dugesiidae)from the southern portion of the Taihang Mountains in northern China,with the description of its complete mitogenome and an exploratory analysis of mitochondrial gene order as a taxonomic character

作者：Lei WANG[1,3];Yixuan WANG[1];Zimei DONG[1];Guangwen CHEN[1];Ronald SLUYS[2];Dezeng LIU[1]

第一作者：Lei WANG

机构：[1]College of Life Science,Henan Normal University,Xinxiang,China;[2]Naturalis Biodiversity Center,Leiden,The Netherlands;[3]Medical College,Xinxiang University,Xinxiang,China

第一机构：College of Life Science,Henan Normal University,Xinxiang,China

年份：2022

卷号：17

期号：6

起止页码：1193-1214

中文期刊名：整合动物学:英文版

外文期刊名：Integrative Zoology

收录：Scopus;CSCD:【CSCD2021_2022】；PubMed;

基金：supported by grants from the National Natural Science Foundation of China(Nos.32070427,31570376,31471965,and u1604173);the Major Public Welfare Project of Henan Province(201300311700);the Puyang Field Scientific Observation and Research Station for the Yellow River Wetland Ecosystem,Henan Province.

语种：英文

中文关键词：Dugesia;mitochondrial genome;new species;taxonomy

摘要：A new species of Dugesia(Platyhelminthes,Tricladida,Dugesiidae)from northern China is described on the basis of an integrative approach,involving morphology,karyology,histology,molecular distance,molecular phylogeny,and mitochondrial gene order.Here,we present the complete mitogenome of the new species Du-gesia constrictiva Chen&Dong,sp.nov.This new species is mainly characterized by the presence of the following features:asymmetrical openings of the oviducts;large,cuboidal copulatory bursa;vasa deferentia opening through the ventro-lateral wall of the seminal vesicle;laterally compressed seminal vesicle;ventrally displaced ejaculatory duct,opening at the blunt tip of the penis papilla;long duct intercalated between semi-nal vesicle and diaphragm;chromosome complement diploid,with 16 metacentric chromosomes;mitochondrial gene order as follows:cox1-E-nad6-nad5-S2-D-R-cox3-I-Q-K-atp6-V-nad1-W-cox2-P-nad3-A-nad2-M-H-F-rrnS-L1-Y-G-S1-rrnL-L2-T-atp8-C-N-cob-nad4l-nad4.In triclads,mitochondrial gene order is considerably conserved between freshwater planarians and land?atworms,whereas it is variable between marine planarians and both fresh-water and land?atworms.The secondary structures of tRNAs are all equipped with 4 arms,excepting tRNA S1 and tRNA S2,which lack the D arm and have excessively enlarged loops.Numerous transpositions of tRNA are present between D.constrictiva and its congeners.Mitochondrial gene arrangements may form a new,additional tool for taxonomic studies.The phylogenetic tree based on analysis of the mitochondrial genome basically corroborates current classi?cation of the higher taxa of planarian?atworms.