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Publication Type J
Authors Waycott, M; Freshwater, DW; York, RA; Calladine, A; Kenworthy, WJ
Author Full Name Waycott, M; Freshwater, DW; York, RA; Calladine, A; Kenworthy, WJ
Title Evolutionary trends in the seagrass genus Halophila (thouars): Insights from molecular phylogeny
Source BULLETIN OF MARINE SCIENCE
Language English
Document Type Article; Proceedings Paper
Conference Title 4th International Seagrass Biology Workshop
Conference Date SEP 26-OCT 02, 2000
Conference Location CORSICA, FRANCE
Conference Sponsors Univ Corsica, Coastal Ecosyst Team, Ischia Lab, Staz Zool Anton Dohrn
Keywords Plus ANGIOSPERM PHYLOGENY; HYDROCHARITACEAE; BIOGEOGRAPHY; SEQUENCES; REGION; RBCL
Abstract Relationships among members of the seagrass genus Halophila (Hydrocharitaceae) were investigated using phylogenetic analysis of the internal transcribed spacer (ITS) region of the nuclear ribosomal DNA. The final aligned ITS sequence data set of 705 base pairs from 36 samples in 11z currently recognised species included 18.7% parsimony informative characters. Phylogenetic analysis yielded two most parsimonious trees with strong support for six groups within the genus. Evolutionary trends in Halophila appear to be toward a more reduced simple phyllotaxy. In addition, this study indicates that long distance 'jump' dispersal between major ocean systems may have occurred at least in the globally distributed H. decipiens. Results of ITS analyses also indicate that the widespread pacific species H. ovalis is paraphyletic and may contain cryptic species. Likewise, the geographically restricted species H. hawaiiana and H. johnsonii could not be distinguished from H. ovalis with these data and warrant further investigation.
Author Address James Cook Univ N Queensland, Sch Trop Biol, Townsville, Qld 4811, Australia; James Cook Univ N Queensland, Sch Trop Environm Studies Geog & Trop Biol, Townsville, Qld 4811, Australia; Smithsonian Trop Res Inst, Balboa 2072, Panama; Univ N Carolina, Ctr Marine Sci, Wilmington, NC 28409 USA; NOAA, Ctr Coastal Fisheries & Habitat Res, Beaufort, NC 28516 USA
Reprint Address Waycott, M (reprint author), James Cook Univ N Queensland, Sch Trop Biol, Townsville, Qld 4811, Australia.
ORCID Number Freshwater, David Wilson/0000-0003-0125-3133
Cited Reference Count 26
Times Cited 40
Total Times Cited Count (WoS, BCI, and CSCD) 43
Publisher ROSENSTIEL SCH MAR ATMOS SCI
Publisher City MIAMI
Publisher Address 4600 RICKENBACKER CAUSEWAY, MIAMI, FL 33149 USA
ISSN 0007-4977
29-Character Source Abbreviation B MAR SCI
ISO Source Abbreviation Bull. Mar. Sci.
Publication Date NOV
Year Published 2002
Volume 71
Issue 3
Beginning Page 1299
Ending Page 1308
Page Count 10
Web of Science Category Marine & Freshwater Biology; Oceanography
Subject Category Marine & Freshwater Biology; Oceanography
Document Delivery Number 696BM
Unique Article Identifier WOS:000183865300016
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