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Grateloupia ramosa Wang & Luan sp. nov. (Halymeniaceae, Rhodophyta), a new species from China based on morphological evidence and comparative rbcL sequences

  • S1 Coastal Biodiversity under Global Change
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Abstract

Grateloupia ramosa Wang & Luan sp. nov. (Halymeniaceae, Rhodophyta) is newly described from Hainan Province, southern China. The organism has the following morphological features: (1) purplish red, cartilaginous and lubricous thalli 5–10 cm in height; (2) compressed percurrent axes bearing abundant branches with opposite arrangement; (3) claw-like apices on top, constricted to 2–4 cm at the base; (4) cortex consisting of 3–6 layers of elliptical or anomalous cells and a medulla covered by compact medullary filaments; (5) reproductive structures distributed throughout the thallus, especially centralized at the bottom of the end portion of the branches; and (6) 4-celled Carpogonial branches and 3-celled auxiliary-cell branches, both of the Grateloupia-type. The morphological diff erences were supported by molecular phylogenetics based on ribulose-1, 5-bisphosphate carboxylase/oxygenase (rbcL) gene sequence analysis. There was only a 1 bp divergence between specimens collected from Wenchang and Lingshui of Hainan province. The new species was embedded in the large Grateloupia clade of the Halymeniaceae. The pairwise distances between G. ramosa and other species within Grateloupia ranged from 26 to 105 bp, within pairwise distances of 13–111 bp between species of the large genus Grateloupia in Halymeniaceae. Thus, we propose this new species as G. ramosa Wang & Luan sp. nov.

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Authors and Affiliations

  1. College of Life Sciences, Liaoning Normal University, Dalian, 116081, China

    Cuicui Cao  (曹翠翠), Miao Liu  (刘淼), Shaoru Guo  (郭少茹), Dan Zhao  (赵丹) & Hongwei Wang  (王宏伟)

  2. Dalian Natural History Museum, Dalian, 116023, China

    Rixiao Luan  (栾日孝)

Authors
  1. Cuicui Cao  (曹翠翠)
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  2. Miao Liu  (刘淼)
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  3. Shaoru Guo  (郭少茹)
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  4. Dan Zhao  (赵丹)
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  5. Rixiao Luan  (栾日孝)
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  6. Hongwei Wang  (王宏伟)
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Correspondence to Hongwei Wang  (王宏伟).

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Supported by the National Natural Science Foundation of China (Nos. 30870161, 31270251)

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Cao, C., Liu, M., Guo, S. et al. Grateloupia ramosa Wang & Luan sp. nov. (Halymeniaceae, Rhodophyta), a new species from China based on morphological evidence and comparative rbcL sequences. Chin. J. Ocean. Limnol. 34, 283–294 (2016). https://doi.org/10.1007/s00343-015-4335-z

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  • DOI: https://doi.org/10.1007/s00343-015-4335-z

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