New record of Halymenia malaysiana (Halymeniaceae, Rhodophyta) from Viet Nam, and its genetic diversity in the western Pacific

IF 1.6 4区生物学 Q2 MARINE & FRESHWATER BIOLOGY

Botanica Marina Pub Date : 2023-03-14 DOI:10.1515/bot-2022-0062

X. Nguyen, Nhu-Thuy Nguyen-Nhat, XUAN-THUY Nguyen, T. Nguyen, Si Hai Trinh Truong, V. Dao, A. Do, K. McDERMID

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引用次数: 2

Abstract

Abstract Halymenia malaysiana, one of the foliose species of Halymenia was first reported from Malaysia and showed some morphological features that distinguish it from sister species, such as Halymenia dilatata, Halymenia maculata, and Halymenia porphyraeformis. In this study, Halymenia samples were collected from nine locations along the coast of Viet Nam (8°–17°N) in the South China Sea and Gulf of Thailand. Morphological observations indicated that almost all samples were Halymenia malaysiana which was supported by two genetic markers, rbcL and COI-5P. However, the presence of Halymenia dilatata in Viet Nam is still unresolved. Based on rbcL, the common haplotype in Viet Nam was R1 as in Malaysia and three new haplotypes were added to H. malaysiana for Southeast Asia. Genetic differences were evident between the Sunda Shelf (Viet Nam and Malaysia) populations and those in Philippine waters. We suggest that a combination of morphology and molecular data would be useful to accurately assess the species diversity and phylogeography of Halymenia in Viet Nam and Southeast Asia region.

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越南马来西亚Halymenia malaysiana（Halymeniaceae，Rhodophyta）新记录及其在西太平洋的遗传多样性

摘要Halymenia malaysiana是在马来西亚首次报道的Halymenia，其形态特征区别于姐妹种Halymenia dilatata、Halymenia maculata和porphyraeformis。在本研究中，在南中国海和泰国湾沿越南海岸(8°-17°N)的9个地点采集了Halymenia样本。形态学观察表明，几乎所有样品均为大马Halymenia malaysiana, rbcL和COI-5P两个遗传标记支持了这一观点。然而，在越南是否存在大裂孔虫的问题仍未得到解决。在rbcL的基础上，越南的常见单倍型为R1，与马来西亚的相同，并在东南亚增加了3个新的单倍型。巽他陆架(越南和马来西亚)种群与菲律宾水域种群之间存在明显的遗传差异。我们认为，形态学和分子数据的结合将有助于准确评估越南和东南亚地区Halymenia的物种多样性和系统地理。

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来源期刊

Botanica Marina 生物-海洋与淡水生物学

CiteScore

4.10

自引率

4.50%

发文量

期刊介绍： Botanica Marina publishes high-quality contributions from all of the disciplines of marine botany at all levels of biological organisation from subcellular to ecosystem: chemistry and applications, genomics, physiology and ecology, phylogeny and biogeography. Research involving global or interdisciplinary interest is especially welcome. Applied science papers are appreciated, particularly when they illustrate the application of emerging conceptual issues or promote developing technologies. The journal invites state-of-the art reviews dealing with recent developments in marine botany.