Phylogenetic,histological and age determination for investigation of non-native tropical black-lip pearl oyster, Pinctada margaritifera, settled in jeju,Korea |
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| Authors: | Chulhong Oh Jin-Kyoung Kim Young-Baek Son Se-Jong Ju Hee-Do Jeung Hyun-Sung Yang Kwang-Sik Choi Gilles Le Moullac Do-Hyung Kang |
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| Affiliation: | 1.Jeju Environment Research Section, Jeju International Marine Science Research & Education Center,KIOST,Jeju,Korea;2.Deep-sea and Seabed Mineral Resources Research Center,KIOST,Ansan,Korea;3.School of Marine Biomedical Science (BK21 PLUS),Jeju National University,Jeju,Korea;4.UMR 241 - Ecosystèmes Insulaires Océaniens,IFREMER,Taravao,French Polynesia;5.Tidal Flat Research Institute,National Institute of Fisheries Science,Kunsan,Korea |
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| Abstract: | This study reports the first finding of tropical blacklip pearl (BLP) oyster, Pinctada margaritifera, in Korean waters. One BLP oyster was found and sampled from Beom-seom islet (33°13′N, 126°33′E) in the southern coast of Jeju Island, Korea in February, 2011. The taxonomic status of the specimen was confirmed by nucleotide sequences of the mitochondrial gene cytochrome oxidase I and 28S ribosomal DNA. Oxygen isotopic analysis (δ18Osh) and histology were used to determine the specimen’s age and reproductive stage, which were 3.5 years and ripe male, respectively. This BLP oyster most likely originated in an area in the subtropics or tropics, such as the Okinawa archipelagic or Micronesian regions. We suggest that intensive monitoring surveys are necessary for confirming the northward expansion of BLP oyster in Korean waters in the near future. |
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