First Report with Molecular Confirmation of the Colonial Sphenopid Palythoa mutuki (Cnidaria: Anthozoa: Zoantharia: Sphenopidae) Forming Massive Colonies in Southern Jeju Island, Korea
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Title
- First Report with Molecular Confirmation of the Colonial Sphenopid Palythoa mutuki (Cnidaria: Anthozoa: Zoantharia: Sphenopidae) Forming Massive Colonies in Southern Jeju Island, Korea
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Author(s)
- Yang, Hyun Sung; Cho, Young Ghan; Kim, Tae Ho; Heo, Soo Jin
- KIOST Author(s)
- Yang, Hyun Sung(양현성); Kim, Tae Ho(김태호); Heo, Soo Jin(허수진)
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Alternative Author(s)
- 양현성; 김태호; 허수진
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Publication Year
- 2023-03
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Abstract
- As the global sea surface water temperature increases due to climate change, some zooxanthellate species have extended their habitat range to higher latitudes. Palythoa species, a colonial zooxanthellate cnidarian, is one such example of a range-extending animal. Recently, massive colonies of zoantharians that appeared to be of Palythoa spp. were discovered in a subtidal area of southern Jeju Island. Because a zoantharian-dominated ecosystem could indicate an unhealthy status, the documentation of its occurrence and species identification are crucial for subsequent studies. In this study, we report and confirm the presence of massive Palythoa colonies in Taeheung and Topyeong, off the southern coast of Jeju Island, using in situ underwater images and identify the species by sequencing the internal transcribed spacer rDNA. The resulting Bayesian inference tree clearly demonstrates that the massive colonies consist of Palythoa mutuki and are closely related to P. mutuki collected from the Ryukyu Archipelago in southern Japan. These records provide evidence of the northward expansion of subtropical and tropical marine organisms.
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ISSN
- 2077-1312
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/43950
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DOI
- 10.3390/jmse11030574
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Bibliographic Citation
- Journal of Marine Science and Engineering , v.11, no.3, 2023
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Publisher
- MDPI AG
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Keywords
- climate change; zooxanthellate species; zoantharian-dominant ecosystem; internal transcribed spacer rDNA; habitat expansion
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Type
- Article
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Language
- English
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Document Type
- Article
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