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Studies on the Genetic Variation and Speciation in the Paragonimus westermani Group in Asia

亚洲卫氏并殖吸虫群的遗传变异和物种形成研究

基本信息

批准号：
02041066
负责人：
KAWASHIMA Kenjiro
金额：
$ 5.12万
依托单位：
Kyushu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1991
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02041066/
关键词：
Paragonimus Taxonomy Genetic variation Host specificity Karyotype analysis Isozyme analysis China India & Thailand Bionomics Karyotype analysis India Thailand Speciation

项目摘要

The present study is to deduce (1) the origin of the triploids of Paragonimus westermani of Japan and (2) what P. westermani is which was described by Kerbert in 1878. More than 5, 000. Paragonimus metacercariae were isolated from 1, 873 crayfishes (Cambaroides dauricus, C. shrenkii) collected in 3 provinces of north-eastern China in 1990. They were identified as P. westermani based on their morphology as well as that of the adults. The flukes, especially from Liaoning Province were proved to be diploid, triploid and tetraploid types. The triploid fluke from China was almost the same as Japanese one not only in host-specificity but also in electrophoretic patterns. In the diploid fluke, Chinese populations were polymorphic in electrophoretic patterns, while Japanese ones were monomorphic. The specific alleles of Japanese triploid were found, with high frequency, in the diploid populations in China. Therefore, a certain diploid population of this fluke in north-eastern China seems to be … More related to the ancestor of Japanese triploid in terms of the gene introgression. Thirty-six Paragonimus metacercariae were isolated from 79 crabs (Potamiscus manipurensis) collected in Manipur, India, in 1990. They were provisionally classified into 2 groups. The morphology of the adult originating from P. westermani type metacercariae was in good agreement with the description of P. westermani by Vevers (1923), but not by Kerbert (1878). Eight hundred forty-three Paragonimus metacercariae were isolated from 570 crabs (the same as above) collected in Manipur, India, in 1991. They were provisionally classified into 4 groups. Seven hundred seventy-three Paragonimus metacercariae were isolated from 205 crabs (Phricotelphusa spp., Ranguna smalley) collected in southern Thailand, in 1991. They were classified into 2 groups. Further studies on Indian and Thai Paragonimus are now in progress. Epidemiological studies on human paragonimiasis as well as further biological studies on the flukes which are causative agents of this disease in India are highly important, because a great many of patients of paragonimiasis and multiple Paragonimus species have been found there. Less

本研究的目的是：（1）日本卫氏并殖吸虫三倍体的起源;（2）1878年Kerbert描述的卫氏并殖吸虫是什么。超过5，000。从1，873份淡水螯虾（Cambaroides dauricus，C. shrenkii），于1990年采自中国东北3省。根据其形态和成虫形态，将其鉴定为卫氏肺吸虫。特别是辽宁省的吸虫，经鉴定为二倍体、三倍体和四倍体类型。中国三倍体吸虫与日本三倍体吸虫的寄主特异性和电泳图谱基本一致。在二倍体吸虫中，中国群体的电泳图谱呈多态性，而日本群体为单态。日本三倍体特有的等位基因在中国二倍体群体中出现频率较高。因此，东北地区的某个二倍体群体似乎是 ...更多信息在基因渐渗方面与日本三倍体的祖先有关。1990年从印度曼尼普尔采集的79只蟹（Potamiscus manipurensis）中分离出36只并殖吸虫囊蚴。他们被暂时分为两组。卫氏并殖吸虫型囊蚴的成虫形态与Vevers（1923）对卫氏并殖吸虫的描述一致，但与Kerbert（1878）的描述不一致。1991年从印度曼尼普尔采集的570只蟹（同上）中分离出843只并殖吸虫囊蚴。他们被暂时分为4组。从205只中华绒螯蟹（Phricotelphusa spp.，Ranguna smalley），1991年在泰国南部采集。他们被分为2组。对印度和泰国并殖吸虫的进一步研究正在进行中。对人类并殖吸虫病的流行病学研究以及对在印度引起这种疾病的吸虫的进一步生物学研究是非常重要的，因为在那里已经发现了大量的并殖吸虫病患者和多种并殖吸虫属物种。少