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Testing a invasive species hypothesis on Platypus quercivorus, a vector insect of the Japanese oak wilt by DNA analysis among regional populations

通过对区域种群进行 DNA 分析，检验鸭嘴兽 (Platypus quercivorus) 的入侵物种假设，鸭嘴兽是日本橡树枯萎病的媒介昆虫

基本信息

批准号：
17405028
负责人：
KAMATA NAOTO
金额：
$ 7.88万
依托单位：
The University of Tokyo (2006-2007)Kanazawa University (2005)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

项目摘要

Before starting this project, Platypus quercivorus was recorded from Japan, India, Indonesia, New Guinea, and Taiwan. We collected the species from Thailand and Vietnam, which is the new record of the distribution of this species. We found that two types were distributed in Japan, which were thought to be two independent species ("Japan-Sea type" and "Pacific -Ocean type" in this MS). These two types differed from each other morphologically and genetically. These morphological and genetic differences coincided. Regarding the "Japanese-Sea type" two populations were recognized by DNA analysis: mainland population and central Ryukyu population. Genetic distance between the two populations was farthest among four regional populations by DNA analysis including Thai and Indonesian populations. The mainland population was most close to Thai population, and the central Ryukyu population was to the Indonesian. It was difficult to explain this result by natural pattern. The mainland population was introduced from Thailand after the last glacier age probably by human activity. On contrary, the pathogenic fungus, Raffaelea quercivora did not varied so much as P quercivorus did: R. quercivora that was collected from P quercivorus in Taiwan and Japan were classified into one trade. We hypothesized an origin of the Japanese oak wilt disease as follows: Japan-Sea-type P quercivorus that were introduced from Thailand after glacier age were hijacked by R. quercivora carried by the Pacific-Ocean type at southern Kyushu, in which these two types coexist. Because Quercus crispula is highly susceptible to R. quercivora and because reproduction rate of P quercivorus is high in dead Q. crispula, epidemics of the Japanese oak wilt spread rapidly and the distribution range of the Thai population of the "Japan-Sea-type" P. quericovrus expanded fast

在开始这个项目之前，鸭嘴兽quercivorus记录来自日本，印度，印度尼西亚，新几内亚和台湾。在泰国和越南采集到该种，为该种分布的新记录。我们发现在日本分布有两个类型，它们被认为是两个独立的种（“日本海型”和“太平洋型”）。这两种类型在形态和遗传上彼此不同。这些形态学和遗传学上的差异是一致的。关于“日本海型”，通过DNA分析确定了两个种群：大陆种群和琉球中部种群。DNA分析表明，泰国和印度尼西亚四个地区群体中，两个群体之间的遗传距离最远。大陆人口与泰国人口最接近，琉球中部人口与印尼人口最接近。这一结果很难用自然规律来解释。大陆种群可能是在最后一次冰川时代后由泰国引入的。相反，致病真菌Raffaelea quercivora的变异没有P quercivorus那么大：R.台湾和日本的栎属（P. quercivorus），分属同一行业。我们假设日本栎枯萎病的起源如下：日本-海洋型P quercivorus，从泰国引进后，冰川时代被劫持的R。在九州南部，这两种类型共存的太平洋-海洋类型携带的quercivora。由于皱皮栎是一种高度感病的植物。同时，由于栎瘿螨在死栎体内繁殖率高，随着日本栎枯萎病的迅速蔓延，“日本海型”栎冠实蝇泰国种群的分布范围迅速扩大

项目成果

期刊论文数量（0）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Alien Pests Threatening Biodiversity of Forest Ecosystems

威胁森林生态系统生物多样性的外来害虫

DOI：
发表时间：
2007
期刊：
Journal of Forest Research 12
影响因子：
0
作者：
Kamata N;Gottschalk KW
通讯作者：
Gottschalk KW

Preface : Special feature : population ecology of biological invasion

前言：专题：生物入侵的种群生态学

DOI：
发表时间：
2006
期刊：
Population Ecology 48(4)
影响因子：
0
作者：
Naoto KAMATA;Kurt W.GOTTSCHALK;鎌田直人・竹本裕之・森謙治・光永徹・本田洋・江崎功二郎;Kamata N;赤石大輔・鎌田直人・中村浩二;鎌田直人・後藤秀章・小村良太郎・久保守・御影雅幸・村本健一郎;鎌田直人・竹本裕之・森謙治・光永徹・本田洋・江崎功二郎;Kamata N
通讯作者：
Kamata N

カシノナガキクイムシの分類学的検討

日本树皮甲虫的分类学研究

DOI：
发表时间：
2007
期刊：
影响因子：
0
作者：
Naoto Kamata;Hisahito Oana;Miwa Kasai;Kenryu Kato;Tohru Mitsunaga;Nobuko Kakiuchi;Kotio Esaki.;鎌田直人・江崎功二郎・森謙治・竹本裕之・本田洋・光永徹;後藤秀章・浜口京子・鎌田直人
通讯作者：
後藤秀章・浜口京子・鎌田直人

航空写真によるナラ類枯死木発生位置の分析講演要旨集

利用航空照片分析死橡树的位置讲座摘要收集