Journal
PHYCOLOGIA
Volume 53, Issue 3, Pages 221-232Publisher
INT PHYCOLOGICAL SOC
DOI: 10.2216/13-224.1
Keywords
Acrochaetiales; Acrochaetium; COI-5P; LSU; Rhododrewia; Systematics
Categories
Funding
- Genome Canada through the Ontario Genomics Institute
- NSERC
- Canada Research Chair Program
- Canada Foundation for Innovation
- New Brunswick Innovation Foundation
Ask authors/readers for more resources
Species of the red algal genus Acrochaetium are present in the global marine flora, but at best only preliminary assessments of species diversity and phylogeny have been attempted for the genus. During an ongoing floristic survey of Canadian seaweeds, we routinely encountered species assigned to this genus epibiotic on other organisms, which provided the material and motivation for the current study. Seven Atlantic, three Pacific and a single subarctic species were identified in analysis of COI-5P (cytochrome oxidase subunit I) sequences with typical levels of intraspecific (0-0.3%) and interspecific (7.9-19.3%) variation observed except between western and eastern Atlantic populations of A. humile (0.9%). Within a historical Atlantic species 'complex', we established that A. virgatulum is synonymous with A. secundatum; however, A. luxurians was an independent lineage and is resurrected. A Pacific isolate of A. secundatum was collected and represents an extension of the reported range for this species. In a second complex, Pacific A. arcuatum and A. vagum were synonymous, as suggested in the literature previously, but A. porphyrae was genetically and anatomically distinct. Further, A. porphyrae did not group with Acrochaetium in nuclear-encoded LSU rRNA and combined LSU /COI-5P analyses, and Rhododrewia gen. nov. is proposed for R. porphyrae (Drew) comb. nov.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available