Colgan Donald J, Ahyong Shane T, Mardon Karine, Brereton Ian M
Australian Museum Research Institute, 1 William St., Sydney 2010 Australia Australian Museum Research Institute Sydney Australia.
School of Biological, Earth & Environmental Sciences, University of New South Wales, Kensington, NSW 2052, Australia University of New South Wales Kensington Australia.
Zookeys. 2021 Sep 17;1060:93-110. doi: 10.3897/zookeys.1060.28809. eCollection 2021.
Many species of the gastropod genus have been named from northeastern Asia but scanty descriptions based predominantly on shells make it difficult to determine which are valid. This, plus the sporadic anatomical and genetic information available for many of these species has led to what may be described as an un-integrated taxonomy. In this situation, it is generally preferable to postpone dissection of rare and unusual specimens until relevant diagnostic characters can be established in broader studies. Micro-CT scanning and DNA sequencing were used to examine such a specimen collected recently from deep waters off northeastern Taiwan. Micro-CT examination of the morphology of the internal shell and gizzard plates suggested that, among named species, the sequenced specimen is most similar to . It cannot, however, be definitively referred to as that species lacks adequate anatomical description or known DNA sequences. Phylogenetic analyses of newly collected DNA sequences show the specimen to be most closely related to, but distinct from the northern Atlantic Ocean and Mediterranean species, . The sequences also confirm genetically that five or more species of occur in northeast Asia, including at least three subject to considerable taxonomic uncertainty.
腹足纲的许多物种已从亚洲东北部命名，但主要基于贝壳的简略描述使得难以确定哪些是有效的。此外，许多这些物种可获得的零星解剖学和遗传学信息导致了一种可被描述为未整合的分类学。在这种情况下，通常最好推迟对稀有和不寻常标本的解剖，直到在更广泛的研究中能够确定相关的诊断特征。使用微计算机断层扫描（Micro-CT）和DNA测序来检查最近从台湾东北部深水区采集的这样一个标本。对内部贝壳和砂囊板形态的微计算机断层扫描检查表明，在已命名的物种中，测序的标本与[具体物种名称1]最相似。然而，由于该物种缺乏足够的解剖学描述或已知的DNA序列，它不能被明确归为[具体物种名称1]。对新采集的DNA序列的系统发育分析表明，该标本与北大西洋和地中海物种[具体物种名称2]关系最为密切，但又与之不同。这些序列还从基因上证实，在亚洲东北部存在五种或更多的[属名]物种，其中至少三种在分类学上存在相当大的不确定性。
