Interrelationships of Major Gastropod Clades: Mathildidae and the 'Lower Heterobranchs' (Mollusca)

主要腹足动物分支的相互关系：Mathildidae 和“低等异鳃类”（软体动物）

• 批准号: 9318231
• 负责人: Rudiger Bieler
• 金额: $ 8万
• 依托单位: Field Museum of Natural History
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-03-15 至 1997-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9318231&HistoricalAwards=false
• 关键词: Interrelationships; Major; Gastropod; Clades; Mathildidae

9318231 BIELER Gastropods (snails and slugs) are the largest group of mollusks, which in turn are only outnumbered by arthropods (insects, crabs, etc.) in living species diversity. Gastropods play important roles as food items (escargot, abolone, conch, etc.) as crop pests, as vectors for human and farm animal diseases (schistosoma, flukes), and as important elements of the reef building community in the world's oceans. However, the interrelationships of the various groups of snails have remained unclear. The present study concentrates on a group of marine gastropods, the family Mathildidae. Better biological knowledge of this morphologically "intermediate" group may provide insight into how the major snail groups (e.g. land snails and sea slugs) are related to one another. This knowledge, in turn, will provide key information for a variety of scientific and applied fields. For instance, close relationship of certain groups may suggest the presence of similar biochemical properties of these organisms, a knowledge that can be useful in the search for "new" biochemical components in drug research. The project will involve field collecting, studies of available material of living and fossil species in museum collections, anatomical studies, histology, scanning electron microscopy, and computer-assisted modelling of three dimensional morphologies. %%% This study will clarify higher level relationships among gastropods (snails, slugs, etc.). Such informnation could be of utility in identifying relatives of organisms found to have chemicals of potential pharmaceutical importance. ***

9318231 BIELER腹足类动物（蜗牛和蛞蝓）是最大的软体动物群，其数量仅次于节肢动物（昆虫、螃蟹等）。物种多样性的重要性。 腹足类作为食物（蜗牛、螺、海螺等）发挥着重要作用。作为农作物害虫，作为人类和农场动物疾病的媒介（寄生虫，吸虫），以及作为世界海洋中珊瑚礁建设社区的重要组成部分。 然而，各种蜗牛群体之间的相互关系仍然不清楚。 本研究集中在一组海洋腹足类，家庭Mathildidae。 对这一形态学上的“中间”群体有更好的生物学知识，可能有助于深入了解主要的蜗牛群体（例如陆地蜗牛和海蛞蝓）是如何相互联系的。 这些知识反过来将为各种科学和应用领域提供关键信息。 例如，某些群体的密切关系可能表明这些生物体存在相似的生化特性，这一知识在药物研究中寻找“新”生化成分时可能很有用。 该项目将涉及实地收集、研究博物馆收藏的活物种和化石物种的现有材料、解剖学研究、组织学、扫描电子显微镜和三维形态的计算机辅助建模。 本研究将阐明腹足类（蜗牛、蛞蝓等）之间更高层次的关系。 这种信息可能是有用的，在确定亲属的有机体发现有潜在的药物重要性的化学品。 ***