Genetic connectivity between trans-oceanic populations of Capreolia implexa (Gelidiales, Rhodophyta) in cool temperate waters of Australasia and Chile

被引：22

作者：

Boo, Ga Hun ^{[1
]}

Mansilla, Andres ^{[2
]}

Nelson, Wendy ^{[3
,4
]}

Bellgrove, Alecia ^{[5
]}

Boo, Sung Min ^{[1
]}

机构：

[1] Chungnam Natl Univ, Dept Biol, Taejon 305764, South Korea

[2] Univ Magallanes, LMAS, Punta Arenas, Chile

[3] Natl Inst Water & Atmospher Res, Wellington 6241, New Zealand

[4] Univ Auckland, Sch Biol Sci, Auckland 1142, New Zealand

[5] Deakin Univ, Sch Life & Environm Sci, Ctr Integrat Ecol, Warrnambool, Vic 3280, Australia

来源：

AQUATIC BOTANY | 2014年 / 119卷

关键词：

Amphipacific distribution; Genetic diversity; Haplotype network; Introduced species; rafting; Southern hemisphere; MOLECULAR PHYLOGENY; NEW-ZEALAND; MORPHOLOGY; DIVERSITY; ATLANTIC; GENUS; ALGA;

D O I：

10.1016/j.aquabot.2014.08.004

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Capreolia is a monospecific genus of gelidioid red algae and has been considered to be endemic to Australasia. This is the first report on the occurrence of Capreolia implexa outside of Australasian waters, based on investigations of fresh collections in southern Chile as well as Australia and New Zealand. Thalli are prostrate and form entangled turfs, growing on high intertidal rocks at three locations in Chile. Analyses of rbcL and coxl revealed that C. implexa was of Australasian origin and also distinct from its relatives. Analyses of 1356 bp of coxl revealed cryptic diversity, consisting of two genealogical groups within C. implexa; one present in Australia and New Zealand, and the other in Chile and Stewart Island, New Zealand. The extremely low genetic diversity found in C. implexa in Chile and the absence of shared haplotypes between Chile and Australasia suggest genetic bottleneck possibly as a result of colonization after dispersal by rafting from Stewart Island, New Zealand to Chile. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：73 / 79

页数：7

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