Global phylogeography of Cassiopea (Scyphozoa: Rhizostomeae):: molecular evidence for cryptic species and multiple invasions of the Hawaiian Islands
Global phylogeography of Cassiopea (Scyphozoa: Rhizostomeae):: molecular evidence for cryptic species and multiple invasions of the Hawaiian Islands
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DOI：
10.1007/s00227-004-1409-4
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发表时间：
2004-11-01
期刊：
影响因子：
2.4
通讯作者：
Hofmann, DK
中科院分区：
文献类型：
--
作者：
Holland, BS;Dawson, MN;Hofmann, DK
倒置水母Cassiopea是一种全球性分布的半无柄、无张力分散的钵水母。Cassiopea出现在浅，热带近海沃茨的桑迪泥滩，通常与红树林为主的栖息地。在第二次世界大战期间，在夏威夷群岛引入倒置的鱼类之前，对倒置的鱼类分类的争议一直持续到今天。本文介绍了三个已知种的全球植物地理学和分子系统学：仙后座（Cassiopea andromeda）、仙后座（C. frondosa和C. xamachana。线粒体细胞色素c氧化酶I（COI）序列来自澳大利亚，百慕大，斐济，佛罗里达群岛，夏威夷群岛，印度尼西亚，帕劳，巴拿马，巴布亚新几内亚，和红海进行了分析。在假定的物种C内高度分歧的COI单倍型。andromeda（23.4%Kimura 2-参数分子分歧），并且在两个独立的假定物种C. andromeda和C. xamachana来自不同的海洋盆地，表明多种人为引进和系统的混乱。两个形态相似、地理上分离的入侵种群的O ′ saplotypes（20.3%）差异很大，表明它们长期（1400万~ 4000万年前）生殖隔离，遗传上不同的来源种群和神秘物种。数据支持至少有两个独立的介绍夏威夷群岛，一个来自印度-太平洋，另一个来自西大西洋/红海。分子系统学结果支持6个种：（1）C. frondosa，西大西洋C. andromeda，红海/西大西洋/夏威夷群岛（3）C. Ornata，印度尼西亚/帕劳/斐济（4）Cassiopea sp. 1，东澳大利亚（5）Cassiopea sp. 2，巴布亚新几内亚和（6）Cassiopea sp. 3，巴布亚新几内亚/夏威夷群岛。
The upside-down jellyfish Cassiopea is a globally distributed, semi-sessile, planktonically dispersed scyphomedusa. Cassiopea occurs in shallow, tropical inshore marine waters on sandy mudflats and is generally associated with mangrove-dominated habitats. Controversy over the taxonomy of upside-down jellyfishes precedes their introduction to the Hawaiian Islands during the Second World War, and persists today. Here we address the global phylogeography and molecular systematics of the three currently recognized species: Cassiopea andromeda, C. frondosa, and C. xamachana. Mitochondrial cytochrome c oxidase I (COI) sequences from Australia, Bermuda, Fiji, the Florida Keys, the Hawaiian Islands, Indonesia, Palau, Panama, Papua New Guinea, and the Red Sea were analyzed. Highly divergent COI haplotypes within the putative species C. andromeda (23.4% Kimura 2-parameter molecular divergence), and shared haplotypes among populations of two separate putative species, C. andromeda and C. xamachana from different ocean basins, suggest multiple anthropogenic introductions and systematic confusion. Two deeply divergent O'ahu haplotypes (20.3%) from morphologically similar, geographically separate invasive populations indicate long-term ( 14 - 40 million years ago) reproductive isolation of phylogenetically distinct source populations and cryptic species. Data support at least two independent introductions to the Hawaiian Islands, one from the Indo-Pacific, another from the western Atlantic/Red Sea. Molecular phylogenetic results support six species: ( 1) C. frondosa, western Atlantic ( 2) C. andromeda, Red Sea/western Atlantic/ Hawaiian Islands ( 3) C. ornata, Indonesia/Palau/Fiji ( 4) Cassiopea sp. 1, eastern Australia ( 5) Cassiopea sp. 2, Papua New Guinea and ( 6) Cassiopea sp. 3, Papua New Guinea/Hawaiian Islands.