短沟蜷科的系统分类及生物地理研究

短沟蜷科种类隶属于软体动物门、腹足纲、中腹足目、蟹守螺超科，共包含结蜷属、短沟蜷属、韩蜷属和华蜷属，广泛分布于北美西部和亚洲的中国、日本、韩国、越南和俄罗斯东部等国家，是跨太平洋分布的类群。本项目以澄清中国短沟蜷科种类的分类地位，明确短沟蜷科物种多样性为基础，对短沟蜷科种类的分化时间进行估算，探讨短沟蜷科跨太平洋分布地理格局形成机制，并以短沟蜷科种类分布的海拔梯度不同为问题的切入点，探讨祖先扩散及隔离历史。

Semisulcospiridae belong to Mollusca, Gastropoda, Mesogastropoda, Ceritiacea. Four genera were placed into Semisulcospiridae, including Juga, Semisulcospira, Koreoleptoxis, and Hua, broadly distributed in western of North America an in variou Asian countries, including China, Japan, Korea, Vietnam, and eastern Russia. Additionally, semisulcospirids are transpacific distribution group. Hence, the main objectives of the current study are to clarify the taxonomic status of part of Chinese semisulcospirids using morphological and molecular data, and to discuss the biogeographic patterns, formation mechanisms, ancestral distributions, and isolation history.