PHYLOGENETIC RELATIONSHIPS AND BIOGEOGRAPHY OF &ITPTILOPHORA &IT(GELIDIALES, RHODOPHYTA) WITH DESCRIPTIONS OF&IT P&IT. &ITAUREOLUSA&IT,&IT P&IT. &ITMALAGASYA&IT, AND &ITP&IT. &ITSPONGIOPHILA &ITFROM MADAGASCAR
PHYLOGENETIC RELATIONSHIPS AND BIOGEOGRAPHY OF &ITPTILOPHORA &IT(GELIDIALES, RHODOPHYTA) WITH DESCRIPTIONS OF&IT P&IT. &ITAUREOLUSA&IT,&IT P&IT. &ITMALAGASYA&IT, AND &ITP&IT. &ITSPONGIOPHILA &ITFROM MADAGASCAR
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DOI：
10.1111/jpy.12617
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发表时间：
2018-04-01
影响因子：
2.9
通讯作者：
Boo, Sung Min
中科院分区：
文献类型：
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作者：
Boo, Ga Hun;Le Gall, Line;Boo, Sung Min
Ptilophora属目前包括16种，主要分布在印度洋-太平洋的潮下带生境，但其全球多样性和地理分布知之甚少。我们分析了线粒体cox 1，质体rbcL和质体psbA序列在马达加斯加南部收集的标本在2010年的阿蒂莫Venda探险，并研究了它们的形态。形态学和分子数据集都证明了马达加斯加南部存在五个物种：Ptilophora hildebrandtii，P. pterocladioides，以及这里描述的三个新物种，P. aureolusa，P. malagasya和P. spongiophila。Ptilophora aureolusa的特点是其复合羽片与均匀间隔的小羽片。Malagasya Ptilophora有一个不明显的中脉和不规则间隔的小羽片。Ptilophora spongiophila，厚被海绵，主轴圆柱形至扁平，侧面和表面增殖，匙形四孢子囊囊群。在马达加斯加发现的Ptilophora物种是地方性的，除了Ptildebrandtii，它也出现在东非。Ptilophora包括四个系统发育组，分布于澳大利亚东部、日本、澳大利亚西部/东南亚/马达加斯加/东非和马达加斯加/东非/爱琴海。生物地理分析显示，Ptilophora的祖先起源于澳大利亚，但大多数物种辐射自马达加斯加。
The genus Ptilophora currently includes 16 species occurring mostly in subtidal habitats of the Indo-Pacific Ocean, but its global diversity and biogeography are poorly understood. We analyzed mitochondrial cox1, plastid rbcL and plastid psbA sequences from specimens collected in southern Madagascar during the 2010 Atimo Vatae expedition and studied their morphologies. Both morphological and molecular data sets demonstrated the presence of five species in southern Madagascar: Ptilophora hildebrandtii, P. pterocladioides, and three new species described here, P. aureolusa, P. malagasya, and P. spongiophila. Ptilophora aureolusa is distinguished by its compound pinnae with uniformly spaced pinnules. Ptilophora malagasya has an indistinct midrib and irregularly spaced pinnules. Ptilophora spongiophila, heavily coated with sponges, has cylindrical to flattened main axes, lateral and surface proliferations, and spatulate tetrasporangial sori. The species of Ptilophora found in Madagascar are endemic, except P. hildebrandtii, which also occurs in eastern Africa. Ptilophora comprises four phylogenetic groups that map to eastern Australia, Japan, western Australia/Southeast Asia/ Madagascar/eastern Africa, and Madagascar/eastern Africa/Aegean Sea. Biogeographical analysis revealed that the ancestor of Ptilophora originated in Australia, but most of the species radiated from Madagascar.