National Taiwan Ocean University Institutional Repository:Item 987654321/46272
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 28611/40652
Visitors : 752822      Online Users : 39
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:

Title: Lack of mtDNA and morphological differentiation between two acorn barnacle Tetraclita japonica and T. formosana differing in parietes colours and geographical distribution
Authors: L. M. Tsang
Benny K. K. Chan
K. Y. Ma
C.-H. Hsu
K. H. Chu
Contributors: 國立臺灣海洋大學:海洋生物研究所
Keywords: Genetic Hitchhike
Control Region
Amplify Fragment Length Polymorphism
Incomplete Lineage Sorting
Control Region Sequence
Date: 2007
Issue Date: 2018-05-14T05:54:56Z
Publisher: Marine Biology
Abstract: Abstract: Tetraclita japonica and T. formosana are common intertidal barnacles with similar morphology, which leads to uncertainty in their species status. In the present study, we try to elucidate the taxonomic status of the two taxa using morphology and mitochondrial control region and cytochrome c oxidase subunit I (COI) sequences of the barnacles in their distribution range. The two taxa were found to be morphologically similar; a diagnostic difference between them was only observed in the colour of the parietes and opercular plates. Little genetic differentiation was detected in the control region and COI (ΦCT < 0.025 for both markers) between two taxa, but differentiation was found between the southern (Taiwan and Hong Kong) and northern (Japan) populations of T. japonica/T. formosana, which might be the result of isolation by distance and upwelling in summer. Our data suggest that the two presently recognized species probably represent two colour morphotypes of the same species exhibiting different geographical distribution. T. japonica is abundant in Japan and southeast coast of China, whereas T. formosana is only abundant in Taiwan. The heterogeneous environment might exert a divergent selection pressure leading to asymmetric distribution of the two colour morphotypes. The different colours might be a result of either phenotypic plasticity adaptive to environmental variables or genetic hitchhiking of local adaptive genotypes.
Relation: 151(1) pp.141-155
Appears in Collections:[Institute of Marine Biology] Periodical Articles

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