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Studies on Biodiversity Promotion Mechanism of Drosophilids in the East Asian Region

东亚地区果蝇生物多样性促进机制研究

基本信息

批准号：
12375002
负责人：
AOTSUKA Tadashi
金额：
$ 16.33万
依托单位：
Tokyo Metropolitan University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2002
项目状态：
已结题

项目摘要

Drosophilids are the insects most extensively studied in the field of evolutionary genetics. The East Asian region is endowed with the highest level of bio-diversity in the temperate zone of the northern hemisphere, and therefore, of crucial importance in investigating the evolutionary history and mechanism of speciation in drosophilids.Until 1970's, drosophilid fauna in the continental Asian region was poorly known. However, since early 1980's, extensive surveys have been made under international cooperation among scientists from Japan, China, and Russia, and have brought about a considerable amount of knowledge on the drosophilid faunas in the continental regions of China, Far East Russia, and East Siberia. The results obtained from these surveys not only deserve the revision of phylogeny and taxonomy of this family but also have revealed many new species including those that are useful in investigating mechanisms of speciation.This project aims to develop a new cooperative study on the evolutionary biology of drosophilids in the South Asian region. Specialists are expected to participate in the project to study their own or cooperative research themes of evolutionary interests such as taxonomy, phylogeny, and mechanisms of speciation. During the term of project (2000-2002), field surveys at many nature reserves in southeastern China were performed. As a result, more than 40 known species were added to the Chinese faunal list and specimens of more than 800 questionable or new species were collected. Efforts of the description of new species were made focusing mainly the subfamily Steganinae. By now, a total of 56 species of the subfamily were described and they provided invaluable information for understanding the evolution of Drosophilids in southeastern Asia and the mechanisms by which the diversity has been created.

果蝇是进化遗传学领域研究最广泛的昆虫。东亚地区是北半球温带地区生物多样性水平最高的地区，因此对于研究果蝇的进化历史和物种形成机制至关重要。直到1970年代，人们对亚洲大陆地区的果蝇动物群知之甚少。然而，自1980年代初以来，日本、中国和俄罗斯科学家在国际合作下进行了广泛的调查，对中国、俄罗斯远东和东西伯利亚大陆地区的果蝇动物区系有了相当多的了解。这些调查获得的结果不仅值得对该科的系统发育和分类学进行修订，而且还揭示了许多新物种，包括那些有助于研究物种形成机制的物种。该项目旨在开展一项关于南亚地区果蝇进化生物学的新合作研究。预计专家将参与该项目，研究他们自己或合作研究的进化兴趣主题，例如分类学、系统发育和物种形成机制。项目期间（2000-2002年）对中国东南部多个自然保护区进行了实地调查。结果，40多个已知物种被添加到中国动物名录中，并收集了800多个可疑或新物种的标本。新物种的描述主要集中于 Steganinae 亚科。到目前为止，该亚科共有 56 个物种被描述，它们为了解东南亚果蝇的进化以及多样性产生的机制提供了宝贵的信息。