• Title/Summary/Keyword: Jeju-do, Korea

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First Record of the Hawaiian Ruby Cardinalfish, Apogon erythrinus (Apogonidae, Perciformes) in Korea (제주 연안에서 채집된 동갈돔과 한국 첫기록종, Apogon erythrinus)

  • Maeng Jin Kim;Song Hun Han;Choon Bok Song
    • Korean Journal of Ichthyology
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    • v.36 no.2
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    • pp.188-192
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    • 2024
  • This is the first report of Apogon erythrinus (Perciformes: Apogonidae) from Korea. A single specimen (33.6 mm SL) was collected by a fish pot from the coastal waters of Jeju-do Island on 28 October 2009. This species is characterized by having 5~6 predorsal scales, 7~9 developed gill rackers, end of second dorsal fin spine not reaching the middle of second dorsal fin base when depressed, and posterior margin of body scales reddish-brown. To confirm the correctness of species identification, the DNA cytochrome c oxidase subunit I sequence was obtained from the sample and compared with those of cardinalfish species recorded in the NCBI database. As a result, it was well-matched to A. erythrinus. We newly added this species to the Korean fish fauna and proposed a new Korean name, "Kueun-nun-eol-ge-bi-neul" because the eyes are large compared to its body.

New Record of the Brassy Trevally, Caranx papuensis (Carangidae, Perciformes) in Jeju Island of Korea (한국 제주 연안에서 채집된 전갱이과(Carangdiae) 어류, Caranx papuensis의 첫 기록)

  • Hyeon-Jeong Kim;Do-Hyun Oh;Jin-Koo Kim
    • Korean Journal of Ichthyology
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    • v.36 no.2
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    • pp.199-206
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    • 2024
  • A single specimen belonging to the family Carangidae was first collected by angling in Seogwi-dong, Seogwipo-si, Jeju-do on 16 October 2023. This individual was identified as Caranx papuensis Alleyne & MacLeay based on morphological traits as following: lateral line gently curving below the first dorsal fin, presence of scaleless area on the thorax, and gill rakers 26. A total of 619 base pairs sequences of the mitochondrial DNA cytochrome c oxidase subunit I region was analyzed, and we found it closely matched to the Japanese C. papuensis (K2P distance=0.54%). We propose its new Korean name "Hwang-jul-jeon-gang-i" based on a yellow band along the lateral line.

Efficacy of a petroleum spray oil for the control of citrus pests, spirea aphid (Aphis citricola) and two scales (lcerya purchasi and Planococcus cryptus) in Jeju island (감귤의 조팝나무 진딧물 및 깍지벌레류에 대한 Petroleum Spray Oil의 방제효과)

  • Kim, Dong-Whan;Kang, Si-Yong;Kim, Kwang-Sik;Song, Jeong-Hueb;Hyun, Jae-Uk;Riu, Key-Zung
    • The Korean Journal of Pesticide Science
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    • v.5 no.1
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    • pp.55-60
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    • 2001
  • The efficacy of petroleum spray oil (PSO; D-C Tron $Plus^{(R)}$) against spirea aphid (Aphis citricola) and two scales (lcerya purchasi and Planococcus cryptus) on citrus was tested in Jeju, Korea. The control value of 0.33% PSO against spirea aphid was over 90% at 3 and 6 days after treatment (DAT), and then decreased to about 80% at 9 and 14 DAT. Spraying of PSO (0.33, 0.66, 1%) against cottony-cushion scale showed a much lower control value (less than 50%) during the investigation period compared to that of the conventional pesticide (Methion). When used against tile scale, Planococcus cryptus, the control value of 1% PSO was 95%, but that of 0.33% and 0.66% PSO only ranged from 50 to 80%, lower than the conventional pesticide. The results of this study, as with a previous study, suggest that spraying of 0.33% and 0.5% PSO not only controls the spirea aphid, but also reduces the density of two scales (lcerya purchasi and Planococcus cryptus) on citrus tree in Jeju, without phytotoxic damage.

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Draft genome sequence of Streptococcus sp. strain NM isolated from head and neck cancer patients (두경부암 환자로부터 분리된 Streptococcus sp. strain NM의 유전체분석)

  • Kim, Young Suk;Do, Kyoung-Tag;Park, Soo-Je
    • Korean Journal of Microbiology
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    • v.55 no.1
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    • pp.61-63
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    • 2019
  • Streptococcus sp. strain NM belonging to Firmicutes was isolated from head and neck cancer patients. Here, we report the draft genome sequence of strain NM with a size of approximately 1.90 Mbp and a mean G+C content of 39.3%. The draft genome included 1,845 coding sequences, and 12 ribosomal RNA and 58 transfer RNA genes. In the draft genome, genes involved in the antimicrobial resistance, hemolysis and defense system have been identified.

New Species and New Records of Buellia (Lichenized Ascomycetes) from Jeju Province, South Korea

  • Wang, Xin Yu;Liu, Dong;Lokos, Laszlo;Kondratyuk, Sergey Y.;Oh, Soon-Ok;Park, Jung Shin;Hur, Jae-Seoun
    • Mycobiology
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    • v.44 no.1
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    • pp.14-20
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    • 2016
  • A new species and 2 new records of lichen genus Buellia were discovered from Chuja-do Island in Jeju Province during a recent floristic survey: B. chujana X. Y. Wang, S. Y. Kondr., L. $L\ddot{o}k\ddot{o}s$ & J.-S. Hur sp. nov., B. halonia (Ach.) Tuck., and B. mamillana (Tuck.) W. A. Weber. The new species is characterized by a brown, areolate thallus, the presence of perlatolic acid, and a saxicolous habitat. Together with previously recorded species, 10 Buellia species were confirmed from Jeju-do Island. Among these species, 3 growing in the exposed rocky area contained xanthone (yellowish lichen thallus, UV + orange), indicating that production of xanthone in this genus might be a defense strategy against the harm of UV light. Although the genus Buellia has been thoroughly studied in Korea before, novel species have been discovered continuously, and large species diversity has been found in this crustose genus, even from a small rocky island. This study indicates that the coastal area harbors a vast number of crustose lichen species, and there is great potential to discover unknown lichens in the coastal rocky area in Korea.

Notes on Six Unrecorded Indigenous Species of Filamentous cyanobacteria (Cyanophyceae, Cyanophyta) in Korea

  • Yim, Byoung Cheol;Song, Mi Ae;Bang, Sung Do;Yoon, Sung Ro;Lee, Ok Min
    • Korean Journal of Environmental Biology
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    • v.35 no.3
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    • pp.296-304
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    • 2017
  • Samples were collected between August 2016 and May 2017 at Sangju-si, Gyeongsangbuk-do, Jeju-do, and Uljin-gun, Gangwon-do. As a result, one genus and six species were newly recorded in Korea. The unrecorded indigenous genus was Borzia, and the six species were Anagnostidinema acutissimum, Komvophoron bourrellyi, Hydrocoleum stankovicii, Borzia trilocularis, Phormidium tinctorium and Pseudanabaena lohchoides. Phormidium tinctorium and Pseudanabaena lohchoides had been reported to inhabit freshwater, but in this study, these were found in brackish water. It had also been reported that B. trilocularis trichomes are composed of up to 8 cells, but in this study, a maximum of 10 cells was observed.

A New Sponge, Antho (Acarnia) seogwipoensis (Poecilosclerida: Microcionidae) from Korea

  • Kim, Hyung June;Sim, Chung Ja
    • Animal Systematics, Evolution and Diversity
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    • v.31 no.3
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    • pp.141-145
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    • 2015
  • A new marine sponge, Antho (Acarnia) seogwipoensis n. sp., of the family Microcionidae, was collected from Seogwipo-si, Jeju-do, Korea, about 100 m in depth using a gill net on 1969. The genus Antho Gray, 1867 including Demospongiae, Poecilosclerida, Microcionidae, is a large group of sponges. About 100 species in Antho were reported from worldwide. The genus Antho contains five subgenera: Antho, Acarnia, Isopenectya, Jia, and Plocamia. Among them, about 30 species in Acarnia were described in world sponge. A new sponge's body shape is branching, size up to 124 mm wide, 213 mm high, 3-8 mm thick in branch and 7-9 mm thick in stalk. Antho (Acarnia) seogwipoensis n. sp. is similar to A. (A.) novizelanicum Ridley and Duncan, 1881 based on their spicules type and skeletal structure, but differs in the spicules dimension and growth form. This new species is branched growth form and have three kinds of toxa.

A New Record of Sinomegoura citricola (van der Goot, 1917)(Sternorhyncha: Aphididae) from Korea (한국 미기록 진딧물 Sinomegoura citricola (van der Goot, 1917)(Sternorhyncha: Aphididae)의 보고)

  • Lee, Seunghwan;Kim, Dong-Hwan
    • Korean journal of applied entomology
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    • v.41 no.1
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    • pp.9-14
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    • 2002
  • Sinomegoura citricola (van der Goot, 1917) is recognized on Citrus unshiu Markovich (Rutaceae), Photinia glabra (Thunb.) Maxim (Rosaceae), and Cinnamomum lourelirii Nees (Lauraceae) from Jeju-do, Korea. Apterous viviparous female, alate viviparous female, and an intermediate morph between the apterous female and alate female are described. This is the first record of the genus Sinomegoura in Korea.

A New Record of the Brittle Star, Amphistigma minuta (Ophiuroidea: Amphilepidida: Amphiuridae), from Jeju Island, Korea

  • Lee, Taekjun;Shin, Sook
    • Animal Systematics, Evolution and Diversity
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    • v.35 no.2
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    • pp.84-90
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    • 2019
  • The brittle star, Amphistigma minuta H.L. Clark, 1938, was collected from Munseom Island, Jeju-do, Korea, by SCUBA diving. This species has distinct morphological features, as follows: a small disk with large papillae on the disk margin; slender arms and four arm spines at proximal; and oral parts the same as those of the genus Amphipholis. Additionally, we obtained partial sequences of the cytochrome c oxidase subunit I gene (COI) (513 bp) and compared them with sequences from Australian A. minuta and 13 other species of Amphiuridae. As a result, intraspecific pairwise distance was 0.4% between two Korean individuals and intraspecific distance between the Australian and the Korean populations was 2.6-2.8%, which indicates they should be considered as the same species. Ultimately, 15 species of the family Amphiuridae have currently been recorded in Korea, including A. minuta.

Ipomoea heptaphylla and Murdannia nudiflora: New records for the flora of Korea

  • Eun Su KANG;Chang Wook KIM;Dong Chan SON;Mean-Young YIM;Seong-Jin JI
    • Korean Journal of Plant Taxonomy
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    • v.53 no.3
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    • pp.222-229
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    • 2023
  • Ipomoea heptaphylla Sweet and Murdannia nudiflora (L.) Brenan have been discovered on arable land on Jejudo Island, Korea. Ipomoea heptaphylla can easily be distinguished from other Korean Ipomoea species by certain distinctive features, which include thin and coiled long pedicels, small corollas, and, most importantly, palmatisect leaves with five to seven lobes. Murdannia nudiflora is characterized by the absence of a rhizome, the presence of caducous bracteoles, by its bearing of more than one flower, and by its fruits with two seeds per valve and foveolate-reticulate seeds, distinguishing it from M. keisak. In this study, we report the plants I. heptaphylla and M. nudiflora and provide their morphological descriptions, photographs, distribution, and keys.