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Morphological and genetic confirmation of the millipede Chordeuma sylvestre C. L. Koch, 1847 new to Ireland
bioRxiv - Zoology Pub Date : 2020-05-17 , DOI: 10.1101/2020.05.17.100263
Willson Gaul , Andrew J Tighe

We report the millipede Chordeuma sylvestre C. L. Koch, 1847 for the first time from Ireland. We used morphology of male gonopods and DNA barcoding of the COI gene from two individuals to confirm the identification of one male and one female collected from the campus of University College Dublin. DNA barcoding revealed two mitochondrial haplotypes, implying that colonization was from multiple females or eggs from multiple females. To evaluate how likely it is that C. sylvestre arrived relatively recently in Ireland, we used species richness estimates and species accumulation curves to evaluate the completeness of the species list compiled during two previous periods of intensive millipede recording going back to 1971. Millipede recording in Ireland was far from complete during the period 1971 - 1984, with multiple species present but undetected. Recording was more complete during the period 1986 - 2005. The area within 20 km of the new C. sylvestre records was poorly recorded during the period 1986 - 2005, so we cannot rule out the possibility that C. sylvestre has been in Dublin for at least a few decades. However, the disjunct location of the current records compared to the species's known native range in northern France, the urban location of the current site, and the lack of records from the relatively intensive millipede recording in Ireland between 1986 and 2005 suggest that C. sylvestre is a recent anthropogenic introduction in Ireland.

中文翻译:

千足虫Chordeuma sylvestre CL Koch的形态学和遗传学确认,1847年刚到爱尔兰

我们首次报道了来自爱尔兰的千足虫Chordeuma sylvestre CL Koch,1847年。我们使用雄性足纲的形态和来自两个个体的COI基因的DNA条形码来确认从都柏林大学校园收集的一男一女的身份。DNA条形码显示出两种线粒体单倍型,这表明定植来自多个雌性或卵来自多个雌性。为了评估C. sylvestre到达爱尔兰的可能性有多大,我们使用物种丰富度估计和物种积累曲线来评估追溯到1971年的前两次密集的千足虫记录期间编制的物种清单的完整性。爱尔兰在1971年至1984年期间还远远没有完成,存在多种物种但未被发现。在1986年至2005年期间,记录更加完整。在1986年至2005年之间,新的C. sylvestre记录的20公里范围内的记录不佳,因此我们不能排除C. sylvestre在都柏林停留的可能性。至少几十年 但是,当前记录的位置与该物种在法国北部的已知本地范围,当前位置的城市位置以及1986年至2005年之间在爱尔兰相对密集的千足虫记录中缺少记录相比,存在歧义。是爱尔兰最近的人为介绍。西尔维斯特(Sylvestre)已经在都柏林居住了至少几十年。但是,当前记录的位置与该物种在法国北部的已知本地范围,当前位置的城市位置以及1986年至2005年之间在爱尔兰相对密集的千足虫记录中缺少记录相比,存在歧义。是爱尔兰最近的人为介绍。西尔维斯特(Sylvestre)已经在都柏林居住了至少几十年。但是,当前记录的位置与该物种在法国北部的已知本地范围,当前位置的城市位置以及1986年至2005年之间在爱尔兰相对密集的千足虫记录中缺少记录相比,存在歧义。是爱尔兰最近的人为介绍。
更新日期:2020-05-17
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