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학술저널
저자정보
Bringloe, Trevor T. (Centre for Environmental and Molecular Algal Research [CEMAR], Biology Department, University of New Brunswick) Macaya, Erasmo C. (Laboratorio de Estudios Algales [ALGALAB], Departamento de Oceanografia, Universidad de Concepcion) Saunders, Gary W. (Centre for Environmental and Molecular Algal Research [CEMAR], Biology Department, University of New Brunswick)
저널정보
한국조류학회(藻類) Algae Algae 제34권 제2호
발행연도
2019.1
수록면
91 - 97 (7page)

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Chilean species of marine macroalgae with amphitropical distributions oftentimes result from introductions out of the Northern Hemisphere. This possibility was investigated using haplotype data in an amphitropical red macroalgae present in Chile, Callophyllis variegata. Published sequence records from Canada and the United States were supplemented with new collections from Chile (April 2014-November 2015). Specimens of C. variegata were amplified for the 5′ end of the cytochrome c oxidase subunit I gene (COI-5P) and the full length nuclear internal transcribed spacer region. Haplotype networks and biogeographic distributions were used to infer whether C. variegata was introduced between hemispheres, and several population parameters were estimated using IMa2 analyses. C. variegata displayed a natural amphitropical distribution, with an isolation time of approximately 938 ka between hemispheres. It is hypothesized that contemporary populations of C. variegata were established from a refugial population during the late Pleistocene, and may have crossed the tropics via rafting on buoyant species of kelp or along deep-water refugia coincident with global cooling, representing a rare case of a non-human mediated amphitropical distribution.

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