Diaz-Tapia, P., Maggs, C., Macaya, E.C. and Verbruggen, H., 2018. Widely distributed red algae often represent hidden introductions, complexes of cryptic species or species with strong phylogeographic structure. Journal of Phycology, 54 (6), 829-839.
Full text available as:
|
PDF
PDF_Submission.pdf - Accepted Version Available under License Creative Commons Attribution Non-commercial No Derivatives. 1MB | |
Copyright to original material in this document is with the original owner(s). Access to this content through BURO is granted on condition that you use it only for research, scholarly or other non-commercial purposes. If you wish to use it for any other purposes, you must contact BU via BURO@bournemouth.ac.uk. Any third party copyright material in this document remains the property of its respective owner(s). BU grants no licence for further use of that third party material. |
DOI: 10.1111/jpy.12778
Abstract
Despite studies suggesting that most seaweeds are poor dispersers, many red algal species are reported to have circumglobal distributions. Such distributions have mostly been based on morphological identifications, but molecular data have revealed a range of issues with morphologically defined species boundaries. Consequently, the real distribution of such reportedly circumglobal species must be questioned. In this study, we analyzed molecular datasets (rbcL gene) of nine species in the Rhodomelaceae for which samples were available from widely spaced geographical locations. Three overall patterns were identified: 1) species showing strong phylogeographic structure (i.e., phylogenetic similarity correlates with geographical provenance), often to the point that populations from different locations could be considered as different species (Lophosiphonia obscura, Ophidocladus simpliciusculus, Polysiphonia villum and Xiphosiphonia pinnulata); 2) species with a broad distribution that is explained, in part, by putative human-mediated transport (Symphyocladia dendroidea and Polysiphonia devoniensis); and 3) non-monophyletic complexes of cryptic species, most with a more restricted distribution than previously thought (Herposiphonia tenella, S. dendroidea and the X. pennata complex that includes the species X. pinnulata and S. spinifera). This study shows that widely distributed species are the exception in marine red algae, unless they have been spread by humans. This article is protected by copyright. All rights reserved.
Item Type: | Article |
---|---|
ISSN: | 0022-3646 |
Uncontrolled Keywords: | Herposiphonieae; Polysiphonieae; Pterosiphonieae; Rhodomelaceae; introductions; new record; phylogeography ; rbcL ; species boundaries ; species complexes |
Group: | Faculty of Science & Technology |
ID Code: | 31291 |
Deposited By: | Symplectic RT2 |
Deposited On: | 01 Oct 2018 09:24 |
Last Modified: | 14 Mar 2022 14:12 |
Downloads
Downloads per month over past year
Repository Staff Only - |