Phylogeny and Classification of World Hydropsychidae, with a Revision of Chinese Species and Description of Their Larvae

世界水螅科的系统发育和分类，以及中国物种的修订及其幼虫的描述

• 批准号: 0316504
• 负责人: John Morse
• 金额: $ 30万
• 依托单位: Clemson University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-01 至 2007-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0316504&HistoricalAwards=false
• 关键词: Phylogeny; Classification; World; Hydropsychidae; Revision; Phylogeny; Classification; World; Hydropsychidae; Revision

With 1462 species in 52 genera, the cosmopolitan family Hydropsychidae is one of the most-speciose families of caddisflies (Trichoptera). Although the Oriental Region is one of the world's most unexplored, about one-third of all described caddisfly species occur there. Hydropsychids are the most commonly encountered caddisflies in Asian streams. In their role as predators and collecting-filterers, larval hydropsychids are key components for the processing of nutrients in stream ecosystems and they govern the densities of many prey, host, and predator species in those ecosystems. Larvae of species in the family are very important as subjects of biomonitoring efforts because they display a wider range of tolerances for pollution than almost every other family of aquatic insects and occur in samples of benthic organisms from all but the most polluted streams. Poor water quality is a very serious problem in Southeast Asia. We will organize the classification of the Hydropsychidae of China, reviewing the known fauna and describing the many species awaiting description and those to be captured on expeditions. It is important to be able to identify (associate) larvae, because the immature stages are the ones that are exposed to pollution. We will associate and describe larvae of Chinese hydropsychids. We will infer the relationships among world genera and revise the family-group classification of the family. This project will be accomplished primarily by a PhD student in each of three laboratories: Mr. Sun Chianghai at Nanjing Agricultural University, Mr. Zhou Xin at Rutgers University, and Ms. Christy Jo Geraci at Clemson University. These three students will cooperate intensively. Mr. Sun will review known Chinese species, describe the new species currently on hand, and describe additional new species captured during two 30-day expeditions he will lead to Guangdong, Guangxi, and Fujian Provinces in China. Using DNA sequences from specimens collected on these expeditions and coordinated projects, Mr. Zhou will associate yet-unidentifiable larvae with identifiable adults and describe the associated larvae. Ms. Geraci will review previous and new morphological characters of all world genera. Then, using DNA sequences from specimens already in hand, together with sequences of specimens collected in China and obtained with assistance of colleagues in Australia, Thailand, New Zealand, New Caledonia, Malaysia, South Africa, and Brazil, she will infer relationships among world hydropsychid genera (on which classification is based) from combined-data.We expect at least to double the number of species of hydropsychids in China known to science. By describing the yet-unknown larvae of many hydropsychid species, we will lay the foundation for future ecological research and biomonitoring refinement in and around China. Research globally in this family will be facilitated conceptually by the phylogeny of world genera and resulting revision of family-group taxa that we will accomplish in this investigation. The proposed research advances discovery and understanding while training three Ph.D. scientists, two of whom are Chinese, the other a U.S. female. The research establishes partnerships between Rutgers and Clemson Universities and Nanjing Agricultural Universities and extends a highly productive 15-year partnership between Clemson and Nanjing that constitutes a widely respected model of Sino-American cooperation. Results will be disseminated broadly through professional publications and public media such as the World Wide Web and GenBank. Especially notable will be the extension of US-initiated technology to a rapidly deteriorating global problem of water pollution: results of this research will go a long way toward enabling effective biomonitoring of water pollution problems in China and refining understanding of a pollution-sensitive group of animals distributed globally, including the U.S.

国际化科幻家族在52属中有1462种，是最细致的卡氏菌（Trichoptera）家族之一。 尽管东方地区是世界上最尚未探索的地区之一，但大约三分之一描述的caddisfly物种发生在那里。 Hydropsychids是亚洲流中最常见的Caddisflies。 在作为捕食者和收集过滤器的角色中，幼虫水力精神病是溪流生态系统中养分的关键组成部分，它们控制着这些生态系统中许多猎物，宿主和捕食者物种的密度。 家族中物种的幼虫非常重要，因为它们的污染范围比几乎所有其他水生昆虫家族都更广泛，并且出现在底栖生物的样本中。 在东南亚，水质差是一个非常严重的问题。我们将组织中国的水力精神病学的分类，审查已知的动物群，描述了许多等待描述的物种以及将在探险中捕获的物种。 重要的是要识别（合并）幼虫，因为未成熟的阶段是暴露于污染的阶段。 我们将使和描述中国水力精神的幼虫。 我们将推断世界属之间的关系，并修改家庭的家庭群体分类。 该项目将主要由三个实验室的博士生来完成：南京农业大学的Sun Chianghai先生，Rutgers University Zhou Xin先生和Clemson University的Christy Jo Geraci女士。 这三个学生将进行密切合作。 Sun先生将审查已知的中国物种，描述目前目前的新物种，并描述在两次30天探险中捕获的其他新物种，他将导致中国的广东，广西和福建省。 使用从这些探险和协调项目中收集的标本的DNA序列，周先生将将尚未确定的幼虫与可识别的成年人联系起来，并描述相关的幼虫。 Geraci女士将回顾所有世界属的先前和新形态学特征。 然后，使用已经掌握的标本的DNA序列以及在中国收集的标本序列，并在澳大利亚，泰国，泰国，新西兰，新喀里多尼亚，马来西亚，南非，南非和巴西获得的同事获得，她将推断出世界水力发生（基于哪个分类）的人之间的关系。 通过描述许多Hydropsychid物种的尚未尚未的幼虫，我们将为未来的生态研究和中国及其周边地区的生态研究和生物监测改进奠定基础。 在全球范围内，全球研究将通过世界属的系统发育以及对家庭群体分类的修订进行概念上的促进，我们将在这项调查中完成。 拟议的研究在培训三个博士学位时提高了发现和理解。科学家，两个是中国人，另一个是美国女性。 该研究建立了罗格斯大学和克莱姆森大学和南京农业大学之间的伙伴关系，并扩展了克莱姆森和南京之间高产的15年合作伙伴关系，构成了中美洲合作的广泛尊重的模型。 结果将通过专业出版物和公共媒体（例如万维网和GenBank）广泛传播。 特别值得注意的是，将美国发起的技术扩展到迅速恶化的全球水污染问题：这项研究的结果将有很长的路要走，在实现中国水污染问题的有效生物监测和对全球污染敏感的动物的理解中，包括美国，包括美国，包括美国，包括美国，包括美国，包括美国，包括美国，包括美国。