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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/45872

Title: Phylogeny, species diversity and biogeographic patterns of the genus Tricleocarpa (Galaxauraceae, Rhodophyta) from the Indo-Pacific region, including T. confertus sp. nov. from Taiwan
Authors: Shao-Lun Liu;Showe-Mei Lin;Pin-Chen Chen
Contributors: 國立臺灣海洋大學:海洋生物研究所
Date: 2015
Issue Date: 2018-04-16T02:56:29Z
Publisher: European Journal of Phycology
Abstract: Abstract: Among four different genera in Galaxauraceae, species diversity of the genus Tricleocarpa Huisman & Borowitzka is underestimated and requires further examination. In this study, we explored a molecular phylogeny of Tricleocarpa with an emphasis on 10 Taiwan species and reassessed species diversity of the genus from Indo-Pacic regions based on analyses of rbcL and COI-5P sequences and morphological observations. The molecular analyses showed that species of Tricleocarpa examined are grouped into seven clades: six clades in the T. cylindrica group (the T. cylindrica complex, T. confertus, T. jejuensis, T. natalensis and two uncharacterized T. ‘cylindrica ’ clades) and one clade as the T. fragilis complex. Overall, at least 12 species in Tricleocarpa were detected from Indo-Pacic regions, including a new species, T. confertus S.-L. Liu & S.-M. Lin, from Taiwan. Among them, 15 T. confertus can be separated from other species of Tricleocarpa by a thallus consisting of dichotomous or trichotomous, articulated and moniliform branches with smooth surfaces, constrictions at nodes and slightly anti-triangular in shape. The cystocarp morphology of T. confertus is similar to the T. cylindrica complex by having paraphyses intermixing with gonimoblast laments. Recognition of this new species from other species is also supported by the DNA-based, algorithmic species delimitation approaches.With the combination of molecular phylogeny and species diversity reassessment, our phylogeographic 20 analysis supported a trend that species in the T. fragilis complex are restricted in their distribution to subtropical and tropical areas whereas species in the T. cylindrica group have a wide distribution, ranging from temperate through to tropical areas.
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/45872
Appears in Collections:[海洋生物研究所] 期刊論文

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