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Publication Type J
Authors Phan, TTH; De Raeymaeker, M; Luong, QD; Triest, L
Author Full Name Thi Thuy Hang Phan; De Raeymaeker, Marie; Quang Doc Luong; Triest, Ludwig
Title Clonal Clonal and genetic diversity of the threatened seagrass Halophila beccarii in a tropical lagoon: Resilience through short distance dispersal
Source AQUATIC BOTANY
Language English
Document Type Article
Author Keywords Halophila beccarii; Clonal; Genetic diversity; Dispersal; Resilience strategy; Microsatellite
Keywords Plus OCEANICA L. DELILE; ZOSTERA-MARINA; POSIDONIA-OCEANICA; POPULATION-STRUCTURE; GENOTYPIC DIVERSITY; COMPUTER-PROGRAM; CYMODOCEA-NODOSA; HYDROCHARITACEAE; SOFTWARE; PATTERNS
Abstract Halophila beccarii is a threatened tropical seagrass which has a narrow, restricted distribution in the shallow coastal areas of the Indo-Pacific. The monoecious H. beccarii reproduces both sexually or asexually and such mixed reproduction mode is important to stay resilient in a dynamic coastal environment. This study examined genetic diversity and structure of H beccarii to determine its survival strategy within a tropical coastal lagoon of Southeast Asia (Central Viet Nam). Seven microsatellite loci gave an overall low level of allelic richness (Ar = 1.9), gene diversity (H-E = 0.233) and clonal diversity (R = 0.27). A small neighborhood size and short dispersal distance together with a significant fine-scale genetic structure within each site indicated that its survival strategy is through local seed recruitment over very short distances and a limited local clonal extension (< 5 m). These estimations together with a low selfing rate, no inbreeding and significant recent bottlenecks, all indicated that the main resilience strategy of H. beccarii meadows is through sexual reproduction and within site dispersal. Implications for conservation are that environmental conditions of the lagoon should allow to maintain a local recruitment, establishment and development of H. beccarii beds at site level.
Author Address [Thi Thuy Hang Phan; De Raeymaeker, Marie; Triest, Ludwig] Vrije Univ Brussel, Biol Dept, Ecol & Biodivers, Pl Laan 2, B-1050 Brussels, Belgium; [Thi Thuy Hang Phan; Quang Doc Luong] Hue Univ Sci, Biol Dept, 77 Nguyen Hue, Hue, Vietnam
Reprint Address Phan, TTH (reprint author), Vrije Univ Brussel, Biol Dept, Ecol & Biodivers, Pl Laan 2, B-1050 Brussels, Belgium.
E-mail Address thitphan@vub.ac.be
Funding Agency and Grant Number VLIR-UOS; Ecology and Biodiversity lab (Biology Department, Vrije Universiteit Brussel)
Funding Text This study was part of PhD thesis of T. T. H. Phan (Vrije Universiteit Brussel) and funded by the VLIR-UOS and the Ecology and Biodiversity lab (Biology Department, Vrije Universiteit Brussel). We would like to thank T.T. Huong Nguyen, H. Giang Nguyen, T. Thuy Lam and all members in the project
Cited Reference Count 84
Times Cited 1
Total Times Cited Count (WoS, BCI, and CSCD) 1
Publisher ELSEVIER SCIENCE BV
Publisher City AMSTERDAM
Publisher Address PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
ISSN 0304-3770
29-Character Source Abbreviation AQUAT BOT
ISO Source Abbreviation Aquat. Bot.
Publication Date SEP
Year Published 2017
Volume 142
Beginning Page 96
Ending Page 104
Digital Object Identifier (DOI) 10.1016/j.aquabot.2017.07.006
Page Count 9
Web of Science Category Plant Sciences; Marine & Freshwater Biology
Subject Category Plant Sciences; Marine & Freshwater Biology
Document Delivery Number FI5PU
Unique Article Identifier WOS:000412037100014
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