Juvenile morphology of the large Antarctic canopy-forming brown alga, Desmarestia menziesii J. Agardh
Juvenile morphology of the large Antarctic canopy-forming brown alga, Desmarestia menziesii J. Agardh
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大型南极冠层形成褐藻 Desmarestia menziesii J. Agardh 的幼年形态
DOI:
10.1007/s00300-019-02584-3
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发表时间:
2019
期刊:
影响因子:
1.7
通讯作者:
Peters, Akira F.
中科院分区:
文献类型:
--
作者:
Küpper, Frithjof C.;Amsler, Charles D.;Morley, Simon;de Reviers, Bruno;Reichardt, Aurelia;Peck, Lloyd S.;Peters, Akira F.
For many types of seaweeds in Polar Regions, open questions remain about how their life cycle contributes to their overall adaptation to the extreme abiotic environment. This applies in particular to the major canopy-forming brown algae in much of the Antarctic Peninsula of the genusDesmarestia, which was investigated here. Diving surveys around Rothera Research Station (Adelaide Island, Antarctica) during December 2017–February 2018 revealed the widespread presence of a hitherto-unknown life form ofDesmarestiasp. of a tender, feather-like morphology. Further studies explored whether this could be (1) a new, hitherto undescribedDesmarestiaspecies (2) a new record for the region of a knownDesmarestiaspecies previously recorded elsewhere or (3) a so-far unknown life form of a species recorded for the region. Collections enabled the extraction of PCR-friendly DNA and sequencing of ITS1, which unambiguously showed that the samples belonged toDesmarestia menziesii, the onlyDesmarestiaspecies presently recorded for the Adelaide Island/Marguerite Bay region. The presence of the juvenile morphology was subsequently confirmed throughout much of the natural range ofD. menziesiiduring cruise-based diving surveys along the Western Antarctic Peninsula in 2019 and from collections at Anvers Island in 1989. Our collections thus constitute its juvenile morphology, which is not previously documented in the literature. The wider significance for the Polar seaweeds is discussed in the context of Taxonomy and Ecology.
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DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
C. Waller;D. Barnes;P. Convey
通讯作者:
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影响因子:
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J. G. Agardh
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J. G. Agardh
DOI:
--
发表时间:
2018
期刊:
Oceanography and Marine Biology: An Annual Review
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