期刊
PHYCOLOGIA
卷 49, 期 3, 页码 235-248出版社
TAYLOR & FRANCIS LTD
DOI: 10.2216/PH09-36.1
关键词
Barcode; Biogeography; Cytochrome c oxidase I; Kelp; Laminariaceae; Mucilage ducts; Saccharina groenlandica; Saccharina latissima
资金
- Genome Canada through the Ontario Genomics Institute
- Canada Research Chair Program
- Natural Science and Engineering Research Council of Canada
- Canada Foundation for Innovation
- New Brunswick Innovation Foundation
DNA barcoding is becoming a widely applied tool for the rapid and accurate identification of eukaryotic species. In this study we used the DNA barcode for large-scale screening of the brown algal family Laminariaceae in Canada. With the examination of 194 COI-5P (5' end of cytochrome c oxidase 1) sequences (150 newly determined) from representatives of this family, we confirmed the presence of 12 species in Canadian waters (Cymathaere triplicata, Laminaria digitata, L. ephemera, L setchellii. L. solidungula, L. yezoensis, Macrocystis intergrifolia, Nereocystis leutkenna, Postelsia palmaeformis, Saccharina groenlandica, S. latissima and S. sessilis). Saccharina groenlandica, a species with a history of taxonomic confusion, was found in the Pacific, Hudson Bay (subarctic) and Atlantic Canada extending greatly our comprehension of the biogeography of this species. Additionally. COI-5P data from S. latissima, combined with ITS results, provided insights into historical distributional patterns and uncovered a hybridization zone between incipient species in this complex. These discoveries highlight how the growth of a worldwide barcode database for the assignment of individuals to genetic species will uncover new perspectives on biogeography and species diversity on a global scale.
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