期刊
EUROPEAN JOURNAL OF PHYCOLOGY
卷 51, 期 3, 页码 354-367出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09670262.2016.1170886
关键词
Australia; COI-5P; DNA barcode; molecular-assisted alpha taxonomy (MAAT); overlooked biodiversity; Rhodymenia
资金
- Genome Canada through the Ontario Genomics Institute
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canada Research Chair Program
- Canada Foundation for Innovation
- New Brunswick Innovation Foundation
A previously published DNA barcode survey of red macroalgae in Australia revealed significant cryptic and overlooked diversity for the genus Rhodymenia with recognition of R. novahollandica, R. prolificans, R. stenoglossa, R. wilsonis and an additional four uncharacterized genetic species groups. Since that study, increased sampling effort in Australia has warranted reassessment and reinvestigation of the number of genetic species groups attributed to Rhodymenia and their respective taxonomic affiliations. Using molecular-assisted alpha taxonomy employing the DNA barcode (COI-5P), the present study resolved 188 Australian specimens in 12 genetic species groups assignable to the genus Rhodymenia. Four of these groups were attributed to the previously recognized species (above), whereas some collections from Lord Howe Island were attributed to the New Zealand species R. novazelandica, expanding its biogeographic range. The following seven genetic groups were inconsistent with existing species of Rhodymenia and established as novel taxa: R. compressa sp. nov., R. contortuplicata sp. nov., R. gladiata sp. nov., R. insularis sp. nov., R. lociperonica sp. nov., R. norfolkensis sp. nov. and R. womersleyi sp. nov. Although morphological and biogeographic features were adequate for distinguishing some species of Rhodymenia from Australia, DNA sequencing in combination with morphology and biogeography provided the most reliable means of identification.
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