English  |  正體中文  |  简体中文  |  Items with full text/Total items : 28611/40649
Visitors : 621108      Online Users : 82
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/45594

Title: Mutilocus approach reveals cryptic lineages in the goby Rhinogobius duospilus in Hong Kong streams: role of paleodrainage systems in the shaping marked population differentiation in a city.
Authors: Tsz Huen Wu;Ling Ming Tsang;I-Shiung Chen;Ka Hou Chu
Contributors: 國立臺灣海洋大學:生命科學系
Date: 2016
Issue Date: 2018-03-28T01:43:51Z
Publisher: Molecular Phylogenetics and Evolution
Abstract: Abstract: Drainage history is a well-demonstrated factor that influences the population structure of freshwater inhabitants over a broad geographic scale. However, there has been little research undertaken on such a relationship with freshwater fish on a small geographical scale, especially in Asia. In this study, we investigated the role of local, small drainage systems in affecting the population genetic structure of a freshwater goby, Rhinogobius duospilus, in Hong Kong streams using a multilocus approach. Analyses on nine genetic markers (2 mitochondrial and 7 nuclear markers, including 5 microsatellite markers) reveal prominent and intensive genetic structuring (2.1–5.4% mtDNA sequence divergence) in R. duospilus in Hong Kong. The lineages and clusters recovered from mtDNA data and assignment analysis of nuclear markers coincide with the paleodrainage networks. Furthermore, marked population subdivision between streams located on different side branches (<20 km apart) within the same paleodrainage area is observed and gene flow occurs only between closely situated streams that share common paleodrainage confluences. In an extreme case, gene flow is limited between streams that are less than 5 km apart. Apparently, such an intensive population structure is attributed to the regional paleodrainage pattern, together with the highly sedentary life style of R. duospilus, which reduces contemporary gene flow and dispersal between populations in neighbouring streams.
Relation: 104
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/45594
Appears in Collections:[生命科學系] 期刊論文

Files in This Item:

File Description SizeFormat

All items in NTOUR are protected by copyright, with all rights reserved.


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback