• Journal of Ecology and Environment
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• 제36권4호
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• pp.293-302
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• 2013

The present study summarizes the occurrence, distribution and autecology of 12 taxa of the class Cyanophyceae collected from several swamps, reservoir and highland wetlands in South Korea from 2009 to 2012. A new species, Anabaena koreana sp. nov. and 11 taxa of blue-green algae newly recorded are described and illustrated. Anabaena koreana is similar to A. oumiana, A. spiroides and A. crassa in that the trichomes form regular coils. However, A. koreana is distinguished from these three species by the morphological characteristics of the vegetative cell, heterocyst, and akinet shape and size. This study considers 12 blue-green algal species, including a new species, Anabaena koreana sp. nov. and 11 species that are recorded for the first time in the Korean freshwater algal flora. Among them, the genus Nostochopsis Wood ex Bornet et Flahault 1886 had not previously been recorded in Korea.

• Animal Systematics, Evolution and Diversity
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• 제30권4호
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• pp.327-333
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• 2014

The Palaearctic species of the genus Trathala Cameron are reviewed. Genus Trathala is the third largest group. This genus was described Trathala striata by Cameron for the first time in the world. One hundred one species of this genus have been recorded worldwide. Trathala flavoorbitalis Cameron and Trathala hierochontica (Schmiedeknecht) were recorded from Palaearctic. Here we report three species, Trathala flavoorbitalis Cameron, Trathala hierochontica (Schmiedeknecht) and Trathala striata Cameron, from Palaearctic region. Among them, Trathala striata Cameron is a newly recorded species for the first time from Palaearctic region and South Korea. Redescriptions of Palaearctic Tranthala species with photographs and a key to the Palaearctic Trathala species are provided.

• ALGAE
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• 제27권3호
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• pp.175-187
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• 2012

Hainan is the second largest and southernmost island of China, and it harbors many species of the family Gracilariaceae. In this study, we conducted molecular and morphological analyses of gracilarian specimens collected from Hainan Island, to clarify their taxonomic identity and phylogenetic relationships. Five species of Gracilariaceae in Hainan were determined through maximum likelihood and Bayesian analysis of rbcL sequence data. Based on the phylogenetic trees and morphology, Hainan specimens were identified as three species of Gracilaria, one species of Gracilariopsis, and one species of Hydropuntia, namely, G. salicornia, G. tenuistipitata, Gracilaria sp., Gp. bailiniae and H. edulis. This is the first report of the molecular phylogeny of Gracilariaceae on Hainan Island, and it helps to clarify the taxonomy and distribution of gracilarian species in the Asia-Pacific region.

• Animal cells and systems
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• 제2권4호
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• pp.435-438
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• 1998

In the present study, we have examined the crossability of four species in the A. jaluense complex to provide additional information on their delimitation and levels of differentiation. Crosses between diploid A. chiisanense and the tetraploid species including A. jaluense s. str., A. triphyllum, and A. pseudoproliferum yielded no fruit- or seed-set, indicating that the former species is reproductively completely isolated from the latter three species. In interspecific crosses between the tetraploid species, combinations involving A. jaluense s. str. resulted in much reduced fruit- and seed-set, indicating that A. jaluense s. str. is more or less reproductively isolated from the other tetraploid species. However, crossing data revealed the absence of reproductive isolation between A. triphyllum and A. pseudoproliferum These results strongly support the relationships that have been previously suggested for the A. jaluense complex on the basis of morphology, chromosome number, and flavonoid chemistry.

• Natural Product Sciences
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• 제14권1호
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• pp.27-31
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• 2008

We have evaluated the combined antifungal effects of the essential oil from Eucalyptus globulus or its main component 1,8-cineole with ketoconazole. Checkerboard microtiter tests were used to analyze their effects against three Candida and six Trichophyton species. The susceptibility of the Trichophyton species to E. globulus essential oil differed distinctly. The fractional inhibitory concentration indices (FICIs) against the tested Candida species ranged between 0.09 and 0.38 for ketoconazole combined with E. globulus essential oil or 1,8-cineole, indicating significant synergism between ketoconazole and the oil samples. Similar experiments using Trichophyton species resulted in FICIs between 0.28 and 0.63, indicating relatively weaker combined effects than those observed with Candida species. Thus, the data reported here show that the anti-Candida effects of ketoconazole can be significantly improved in the presence of E. globulus essential oil or 1, 8-cineole.

• 대한수의학회지
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• 제40권4호
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• pp.747-753
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• 2000

Helicobacter species have commonly been isolated from the gastric mucosa of humans and animals, however have not been known its association with clinical signs. This study was aimed to detect and identify Helicobacter species in the canine stomach by urease test and polymerase chain reaction(PCR). A total of 87 dogs in Kangwon and Kyunggi areas from August, 1998 to June, 1999 were examined. The detection rate of Helicobacter species by urease test for fundal biopsy samples was 83.9%, and positive rate was increased as incubation time was increased. Helicobacter species was detected in the seventy seven dogs(88.5%) of total 87 dogs by PCR. The fifty five strains of the 77 strains of Helicobacter species were identified as H heilmannii and the three strains were identified as H felis by PCR, but the nineteen strains were not identified.

• Journal of Species Research
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• 제7권4호
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• pp.340-347
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• 2018

Four psammocinian species(Demospongiae: Dictyoceratida: Irciniidae) are described from Gageodo and Jejudo Islands, Korea. Among them, three are new species, Psammocinia rana, P. massa and P. vermins, which are very different from other recorded species. Secondary fibres of Psammocinia rana are mostly wide platelike shape with large perforation. Primary and secondary fibres of Psammocinia massa are lumped together in a thick mass through numerous areas. Psammocinia vemis is similar to P. mosulpia in skeletal structure, but differs in size of cored sands in primary fibres. The fourth species, we reclassify from Ircinia chupoensis to Psammocinia chupoensis based on more detailed observation of the skeletal structure. Ircinia only has sand cored primary fibres, while the observed species, has sand cored primary and secondary fibres.

• Journal of Species Research
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• 제9권4호
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• pp.473-479
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• 2020

In this study, we briefly describe five newly recorded foraminiferal species from off the southern coast of Jeju Island: Ammolagena clavata, Neoeponides bradyi, Nodosaria lamnulifera, Rhabdammina abyssorum, and Uvigerina schwageri. Ammolagena clavata and Rhabdammina abyssorum are the first reports of the genera Ammolagena and Rhabdammina in Korea. In addition, R. abyssorum is reported from a depth of 103 m, which is a relatively shallow record within the distribution depth range for this agglutinated deep-sea species. Ammolagena clavata also shows interesting characteristics that the test usually attaches to substrates including shell fragments, sediment particles, or other foraminiferal tests. All other three species have typical calcareous and hyaline tests. The present report on unrecorded species improves the understanding of foraminiferal species diversity in Korean waters and confirms the need for the further research on foraminifera in the adjacent seas of Korea.

• 약학회지
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• 제4권1호
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• pp.21-34
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• 1959

(1) Plants in the crater of Halla-San (Mt. Halla), a conical volcano that originated in the Tertiary period, were studied on three different occasions; July 1937, July 1955, and August 1957, and noted 52 familites, 149 species. In the latest study undergone in 1957, the authors collected 108 species. Notable species among them are Geranium Shikokianum Matsum which has not been reported in Korea, Clematis Chiisanensis Nakai, Lactuca Chelidonifolia Makino, and Platanthera Maximowiczana Schelchter which have not been reported in Jeu-Do(Island) so far. (2) Plants in To-Do(Island), territorial island of Jeju-do, were also studied. The authors noted Canavalia lineata D.C.non-reported Species in Korea, usually distributed along Southern Honshu, Shikoku, and Kyushu of Japna, Ryukyu and Taiwan. The overfall flora of the island is composed of 30 families, 44 Species; 5 Species of wood plants and 39 species of herbs, and is mostly of littoral plants.

• 아시안잔디학회지
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• 제7권2_3호
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• pp.67-80
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• 1993

About 154 weed species composed of 31 annuals, 33 biennials, and 90 perennials belonging to 38 families were identified from golf courses in Dongrae, Joongmoon and Ora country clubs on June and September, 1992. Compositae was the most widely occurring family covering 30 species, followed by 28 species in Graminae, 12 species in Leguminasae and Rosaceae, respectively, and 7 species in Caryopbyllacese etc. The bighest number of weed species occurred in the out of bounds in three golf courses, The dominant weed species based on importance value and frequency were Hydrocotyle sibthorpioides, Poa annua, Cyperus rotundus, Oxalis corniculata, Digitaria sanguinalis and Artemisia prinseps.