权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

河川水生昆虫の生息域の減少が遺伝的多様性に及ぼす影響

栖息地丧失对河流水生昆虫遗传多样性的影响

基本信息

批准号：
20922006
负责人：
熊谷幸博
金额：
$ 0.37万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Encouragement of Scientists
财政年份：
2008
资助国家：
日本
起止时间：
2008 至无数据
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-20922006/
关键词：
AFLP 遺伝的多様性生息分布

项目摘要

近年,生息域の減少・消失に伴う遺伝的多様性(種内個体間の遺伝的変異の大きさ)の劣化が多くの野生生物で問題となっており,その実態解明が急務となっている。本研究では,宮城県中南部エリア(約40km×30km)を流れる砂押川、七北川、名取川、増田川、川内沢川、五間堀川流域の6流域の源流から下流まで分布する(支流含む)面的な広がりを持つ58地点で水生昆虫を採取し,地域集団の遺伝構造をAmplified Fragment Length Polymorphism法で調べた。対象種は生息分布域が段階的に異なるウルマーシマトビケラ(Hydropsychidae : Hydropsyche orientalis),ヒゲナガカワトビケラ(Stenopsychidae : Stenopsyche marmorata),シロズシマトビケラ(H. albicephala),フタスジモンカゲロウ(Ephemeridae : Ephemera japonica),トワダナガレトビケラ(Rhyacophilidae : Rhyacophila towadensis))の5種である。調査の結果,生息分布が狭い種ほど地点間の遺伝的多様性(θ_<ST>)は低く,逆に地点内の遺伝的多様性(Hs)は高くなる傾向があった。これは,全体の遺伝的多様性(Hs)は5種間で有意差はなく,種毎の生息分布の違いは,地域集団内の遺伝的多様性の大きさに影響していないことが明らかにされた。

In recent years, there has been a decrease in the number of organisms in the health domain, which has been accompanied by the multiplicity of animals within species (the large number of animals within species). The problem of wild life problems has been deteriorated, and the emergency has been explained. This study was conducted in the central and southern part of the city (about 40km × 30km). The aquatic insects were collected at 58 sites on the side of the source stream (tributaries and tributaries) in the 6 basins of the basin, including the source stream, the source stream, the Norikawa basin and the Horikawa watershed. The aquatic insects were collected at 58 locations, and the Amplified Fragment Length Polymorphism method was used in the region. For example, there are five categories of information in the distribution domain (Hydropsychidae: Hydropsyche orientalis), Stenopsychidae: Stenopsyche marmorata, H. albicephala, Ephemeridae: Ephemera japonica, and Rhyacophilidae: Rhyacophila towadensis. The results show that the distribution of interest (θ _ & lt;ST>) between sites is low, and the Hs of intra-location is higher than that of other sites. In general, the multiplicity of all information (Hs) is intentionally different, the distribution of information is different, and the multiplicity of information in the regional collection is significant.