Phylogenetic Systematics and Biogeography of Sphaeromatid Isopods (Crustacea: Peracarida)

等足类球形动物（甲壳类：甲壳类）的系统发育系统学和生物地理学

• 批准号: 0129317
• 负责人: Regina Wetzer
• 金额: $ 28.05万
• 依托单位: Los Angeles County Museum of Natural History Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-01 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0129317&HistoricalAwards=false
• 关键词: Phylogenetic; Systematics; Biogeography; Sphaeromatid; Isopods

A grant has been awarded to Drs. Regina Wetzer and Joel Martin of the Natural History Museum of Los Angeles County to study the relationships of a very diverse and important family of crustaceans. These crustaceans are commonly known as pillbugs, sow bugs, or rolly-pollies, and scientifically known as sphaeromatid isopods. Today more than 600 species are known, yet we still do not know how sphaeromatid species are related to one another and how they came into their present distribution on the planet. This project will define their evolutionary relationships using analysis of both morphological features and gene sequences. We will sample 100 species representing over 25 genera (1/6 of the world's sphaeromatid species diversity representing nearly 2/3 of the known generic diversity). Our plan of sampling across taxa will provide a solid phylogenetic framework for the group.We are living in one of the largest biodiversity crises in Earth history. In similar previous crises, large proportions of the biota went extinct. For humans to be able to survive the present crisis, we will need to understand which organisms are being affected and in what ways. Unfortunately, for most animal groups, we are unable to identify the species and their evolutionary origins. Therefore we cannot understand how their diversity and abundance is changing. This study focuses on a group of animals that is common and globally distributed, and thus likely to be strongly affected by change.

已向博士授予补助金。洛杉矶县自然历史博物馆的雷吉娜·韦策和乔尔·马丁研究了一个非常多样化且重要的甲壳类动物家族的关系。 这些甲壳类动物通常被称为丸蝽、母猪蝽或滚球蝽，科学上称为球形等足类动物。 如今，已知的物种已超过 600 种，但我们仍然不知道球形类物种之间是如何相互关联的，以及它们是如何形成目前在地球上的分布的。 该项目将通过对形态特征和基因序列的分析来定义它们的进化关系。 我们将对代表超过 25 个属的 100 个物种进行采样（世界球体物种多样性的 1/6 代表已知属多样性的近 2/3）。 我们的跨类群抽样计划将为该群体提供坚实的系统发育框架。我们正生活在地球历史上最大的生物多样性危机之一。 在之前类似的危机中，大部分生物群都灭绝了。 为了人类能够在当前的危机中生存，我们需要了解哪些生物体正在受到影响以及以何种方式受到影响。 不幸的是，对于大多数动物群体，我们无法识别其物种及其进化起源。 因此我们无法理解它们的多样性和丰富性正在如何变化。 这项研究重点关注一组常见且分布于全球的动物，因此可能会受到变化的强烈影响。