Reassessment of Tristan da Cunha Gelidium (Gelidiales, Rhodophyta) species
-
D. Wilson Freshwater
Scomberomorus maculatus artificial bait preferences, and ecology of marine hard bottom communities.
,
Sue Scott
Abstract
Three endemic species of Gelidium have been described from the remote Tristan da Cunha archipelago. A recent barcode survey of Tristan da Cunha red algae in combination with the clarification of vouchers for previously sequenced specimens has prompted a molecular and morphological reassessment of these species. Analyses of rbcL and COI-5P data indicated that all sequenced Tristan da Cunha specimens represented a single taxon, and furthermore that this genetic group was conspecific with Gelidium micropterum from southern Africa. Morphologically the Tristan da Cunha specimens represented either Gelidium concinnum or Gelidium regulare, and there was a grade of character states between both of these species, as well as G. micropterum. Based on these results the synonymy of G. concinnum and G. regulare under G. micropterum is proposed and an expanded description of G. micropterum provided. None of the studied Tristan da Cunha specimens clearly fit the description of the third endemic species, Gelidium inflexum, and its status could not be determined.
Funding source: Claude Leon Harris Foundation
Funding source: Darwin Initiative
Funding source: US National Science Foundation
Award Identifier / Grant number: DEB-9726170, DEB-0328491
Funding source: CMS DNA-Algal Trust
Funding source: Natural Sciences and Engineering Research Council of Canada
Funding source: Canada Foundation for Innovation
Funding source: New Brunswick Innovation Foundation
About the authors
D. Wilson Freshwater is researcher at the Center for Marine Science, University of North Carolina Wilmington. His current research interests include molecular phylogeny and taxonomy of marine algae, marine floristics, Scomberomorus maculatus artificial bait preferences, and ecology of marine hard bottom communities.
Sue Scott is a retired freelance marine biologist and consultant based in the highlands of Scotland. She has particular interests in subtidal community structure in colder seas, macroalgal identification and impacts on the marine environment. Since 2004 she has made numerous trips to Tristan da Cunha for intertidal and subtidal surveys, macroalgal collections and impact assessment of marine accidents.
Enrico M. Tronchin worked on this project while a visiting researcher at the Center for Marine Science, University of North Carolina Wilmington and Claude Leon Harris Postdoctoral Fellow at the University of Cape Town. He currently is the manager of Commercialisation Development at Callaghan Innovation in New Zealand.
Gary W. Saunders is a researcher at the Centre for Environmental & Molecular Algal Research, Biology, University of New Brunswick Fredericton. His current research interests include biodiversity and biogeography of seaweeds with an emphasis on origins of the Arctic flora, as well as shifts in species ranges owing to climate change and kelp forest restoration.
Acknowledgements
The authors wish to acknowledge the people of Tristan da Cunha for their support during fieldwork.
Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: This research was funded by support of this project: DWF – US National Science Foundation grants DEB-9726170 and DEB-0328491, and the CMS DNA-Algal Trust; EMT – Claude Leon Harris Foundation Fellowship for Postdoctoral Research; SS – Darwin Initiative, RSPB and the people of Tristan da Cunha; GWS - This research was supported through NSERC Discovery funding, and by the Canada Foundation for Innovation and the New Brunswick Innovation Foundation.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Supplementary Material
The online version of this article offers supplementary material https://doi.org/10.1515/bot-2020-0036.
© 2020 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- In this issue
- Physiology and ecology
- Exploring the role of macroalgal traits on the feeding behaviour of a generalist herbivore in Malaysian waters
- Mangrove community response to subsidence inflicted sea level change in Car Nicobar Island, India
- Seagrass characterization on the southern Pacific coast of Costa Rica: history, vegetation, and environment
- Taxonomy/phylogeny and biogeography
- The Ulvophyceae (Chlorophyta) of eastern Sorsogon, Philippines, including Halimeda magnicuneata sp. nov. (Bryopsidales)
- Reassessment of Tristan da Cunha Gelidium (Gelidiales, Rhodophyta) species
- Distribution patterns and biogeography of Sargassum (Fucales, Phaeophyceae) along the coast of Vietnam
- A survey of marine fungi on wood in South Australia
- Genomics
- Comprehensive analysis and identification of heat-responsive genes in Agarophyton vermiculophyllum by RNA-sequencing
- Corrigendum
- Corrigendum to: The seaweed resources of Israel in the Eastern Mediterranean Sea
Artikel in diesem Heft
- Frontmatter
- In this issue
- Physiology and ecology
- Exploring the role of macroalgal traits on the feeding behaviour of a generalist herbivore in Malaysian waters
- Mangrove community response to subsidence inflicted sea level change in Car Nicobar Island, India
- Seagrass characterization on the southern Pacific coast of Costa Rica: history, vegetation, and environment
- Taxonomy/phylogeny and biogeography
- The Ulvophyceae (Chlorophyta) of eastern Sorsogon, Philippines, including Halimeda magnicuneata sp. nov. (Bryopsidales)
- Reassessment of Tristan da Cunha Gelidium (Gelidiales, Rhodophyta) species
- Distribution patterns and biogeography of Sargassum (Fucales, Phaeophyceae) along the coast of Vietnam
- A survey of marine fungi on wood in South Australia
- Genomics
- Comprehensive analysis and identification of heat-responsive genes in Agarophyton vermiculophyllum by RNA-sequencing
- Corrigendum
- Corrigendum to: The seaweed resources of Israel in the Eastern Mediterranean Sea
