Dissertation Research: Molecular Phylogenetic Analysis of the Major Lineages of Tapeworms (Platyhelminthes: Eucestoda)

论文研究：绦虫主要谱系的分子系统发育分析（扁形动物：Eucestoda）

基本信息

批准号：
9701052
负责人：
Janine Caira
金额：
$ 1万
依托单位：
University of Connecticut
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1997
资助国家：
美国
起止时间：
1997-09-01 至 1998-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9701052&HistoricalAwards=false
关键词：
Dissertation Research Molecular Phylogenetic Analysis

项目摘要

9701052 CAIRA Tapeworms are obligate flatworm parasites that are often restricted to specific host animals. Many tapeworm species have been associated with their hosts for long periods of time. Understanding the phylogenetic history of tapeworms is significant to biologists, who wish to understand the consequences of shared history on host and parasite species, and to lessen the harmful effects of tapeworms on humans and domesticated animals. The phylogenetic history of tapeworms has been difficult to reconstruct, because morphological characters are few and difficult to interpret, fossils are absent, and investigations on molecular characters have not been conducted. In this research, Janine Caira, Chris Simon and doctoral candidate Peter Olson will infer the phylogenetic history of tapeworms by sequencing the nucleus-encoded 18S-like ribosomal RNA gene, from representative species in each of 14 recognized major groups (orders) of tapeworms, and conducting a comparative analysis of these sequences. The work will provide a foundation with which to test hypotheses of tapeworm phylogenetic history based on morphological, ecological, and other types of evidence. In particular, the researchers will determine whether the tapeworms placed within an order share a common history (are Omonophyletic groupsO) or not.

9701052 Caira Tapeworms是较短的扁虫寄生虫，通常仅限于特定的宿主动物。很长一段时间以来，许多tap虫物种与宿主有关联。了解tape虫的系统发育史对生物学家来说是重要的，他们希望了解共享历史对宿主和寄生虫物种的后果，并减少tap虫对人类和家养动物的有害影响。 tape虫的系统发育史很难重建，因为形态学特征很少且难以解释，没有化石，并且尚未对分子特征进行研究。在这项研究中，Janine Caira，Chris Simon和博士候选彼得·奥尔森（Peter Olson）将从14个公认的tapeworms中的每个识别群中的代表性物种（tape）中的每个代表性物种进行测序，通过对核编码的18S样核糖体RNA基因进行测序，从而推断出Tapeworms的系统发育史，并对这些序列进行比较分析。这项工作将为基础，以基于形态学，生态和其他类型的证据来检验tap虫系统发育史的假设。特别是，研究人员将确定放置在订单中的tape虫是否共享共同的历史（是词汇群）。