• Animal Systematics, Evolution and Diversity
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• v.13 no.3
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• pp.221-231
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• 1997

Marine harpacticoid copepods of the genus parathalestris, which are suspected as a chief cause of pinholes or galls of cultivated seaweeds like Undaria pinnatifida, are studied taxonomically. As a result of examining the specimens from 23 localities in Korea since 1989, the authors confirmed sic species of the genus Parathalestris including a new species, P. parviseta n. sp., and four species new to korean fauna: P. bulbiseta Lang, 1965; P. verrucosa Ito, 1970; P. pacificus Tschislenko, 1971 and P. arelata Ito, 1972. A key to these six species of parathalestris was made out, with the illustrations for them.

• Animal Systematics, Evolution and Diversity
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• v.24 no.3
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• pp.251-263
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• 2008

Eight species and four genera belonging to two families of antipatharians have been reported in Korea. In the present study, the major specimens were collected from the coastal areas of Jejudo Island from 2005 to 2006, and the other ones which have been deposited in the Natural History Museum and the Department of Life Science, Ewha Womans University during the period from 1965 to 2004 were reexamined. As a result of this work, four species, Myriopathes bifaria, M. stechowi, M. ulex and Plumapathes pennacea are new to Korean antipatharian fauna. In this study, total six species including previously recorded species of the family Myriopathidae were described. And the distribution range of Myriopathes lata was turned out to be expanded from southwestern sea to the eastern sea, up to Ulleungdo Is. of Korea. Especially, the sexuality and the gonadal stage of M. lata which are collected during their reproduction period were also determined by means of histological analysis.

• ALGAE
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• v.20 no.4
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• pp.325-331
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• 2005

Populations of Campylaephora borealis (Nakamura) Seo, Cho et Boo and C. crassa (Okamura) Nakamura show a year-around occurrence of all life-history stages. Such a concurrency of life-history stages produces problems in recognizing species in the field. Here, we invesitgated the morphological variation and life-history stages of both species using a statistical character analysis. Life-history stage was correlated with the seawater temperature in C. borealis, whereas it was dependant on biomass in C. crassa. Thalli had dichotomous branches with adaxial branchlets. The statistics showed that the seasonal change in morphology of C. borealis was significantly different from that of C. crassa in seven qualitative characters and five quantitative characters (p < 0.001), although six quantitative features including tetrasporangial size were similar in both species. The morphological difference between the two species may be due to the annual variation of branchlet number and the variance of branch subangle.

• Korean Journal of Environmental Biology
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• v.37 no.3
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• pp.396-405
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• 2019

A new species of free-living marine nematode is described from intertidal sediments of the East Sea, Korea. Phanoderma koreense sp. nov. is characterized by the presence of well-developed pharyngeal and cephalic capsule, six inner labial sensilla present as minute papillae around with circular groove, long and slender spicules with 4-5 serrated distal end, located at the base of the precloacal supplement, a series of eight to nine stout and short setae on the ventral cloacal region and conico-cylindrical tail with two pairs of blunt setae. In this study, we provide taxonomic descriptions and illustrations of a new species by differential interference contrast microscope and a pictorial key to the valid species of Phanoderma Bastian, 1865. This is the first record of the genus Phanoderma in the East Sea, Korea.

• Journal of Plant Biology
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• v.31 no.4
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• pp.309-315
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• 1988

Leaf mesophy11 protoplast cultures from six Nicotiana species, N. debneyi, N. rustica, N. amplexicaulis, N. glauca, N. glutinosa, and N. sylvestris were carried out. When we reduced the NH4NO3 and Fe.EDTA concentration to 1/3(7 mM) and 1/10(10$\mu$M) from the Murashige and Skoog medium respectively, cell division of the protoplasts was efficiently induced in four Nicotiana species, N. debneyi, N. rustica, N. amplexicaulis and N. glauca. However, other two species, N. glutinosa and N. sylvestris were failed in inducing cell division at the same culture condition. The protoclone calluses derived from four Nicotiana species were consequently regenerated on a MS basal medium supplemented with the appropriate auxin and cytokinin.

• Korean journal of applied entomology
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• v.55 no.3
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• pp.189-196
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• 2016

Previously, only 25 species of Pseudococcidae (mealybugs) were known to occur in Cambodia, and only 18 species in Laos. In 2015, we collected 14 mealybug species in these two countries, including six species not previously known to occur in these areas: Coccidohystrix insolita (Green, 1908) in Cambodia; Antonina graminis (Maskell, 1897) in both countries; and Nipaecoccus viridis (Newstead, 1894), Paracoccus marginatus Williams & Granara de Willink, 1992, Phenacoccus solani (Ferris, 1918), and Rastrococcus iceryoides (Green, 1908) in Laos.

• The Plant Pathology Journal
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• v.19 no.5
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• pp.221-226
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• 2003

Twenty universal rice primers (URPs) were used to detect PCR polymorphisms in 25 isolates of six different Alternaria species producing host specific toxins (HST). Eight URPs could be used to reveal PCR polymorphisms of Alternaria isolates at the intra- and inter-species levels. Specific URP-PCR polymorphic bands that are different from those of the other Alternaria spp. were observed on A. gaisen and A. longipes isolates. Unweighted pair-group method with arithmetic mean (UPGMA) cluster analysis using 94 URP polymorphic bands revealed three clustered groups (A. gaisen group, A. mati complex group, and A. logipes group).

• Fisheries and Aquatic Sciences
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• v.10 no.2
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• pp.68-73
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• 2007

Based on four juvenile specimens of Lutjanus collected from the southern coast of Jeju Island, three species, L. argentimaculatus, L. fulviflamma, and L. quinquelineatus, are described as the first record from Korea. The first species is easily differentiated from other lutjanid juveniles by distinct coloring of the dorsal, pelvic, and anal fins as well as two blue lines below the eye; the second species is characterized by having six yellowish brown stripes below the lateral line and a black spot on the side; the third species is identified by five longitudinal blue stripes and a black spot on the side when fresh. The new Korean names "Bul-geun-tung-dom," "Yuk-seon-jeomtung-dom," and "O-seon-tung-dom" are proposed for L. argentimaculatus, L. fulviflamma, and L. quinquelineatus, respectively.

• Animal Systematics, Evolution and Diversity
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• no.nspc3
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• pp.77-84
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• 1992

A new species of the genus Herrmannella is described under the name of H. hoonsooi from the bivalve host, Saxidomus purpuratus. This species is characteristic in that the cephalothorax is spatulate, and the prosome and some parts of body have a hyaline material. A key to six Far Eastern species of the genus is provided.

• Animal Systematics, Evolution and Diversity
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• v.9 no.2
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• pp.281-292
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• 1993

Five species of lsotomidae from North Korea, including four new species lsotomurus griseus nsp., I. myohyangsanus nsp., Isotoma grana nsp., I. agrana n. sp. and one new record for North Korea, Folsomia octoculata Handschin, 1925 are described and discussed. The Korean Isotomidae, therefore, come to list 19 species in 6 genera including 15 species in six genera from South Korea.