• International Journal of Industrial Entomology and Biomaterials
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• 제33권2호
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• pp.72-77
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• 2016

The genus Scutellathous Kishii, 1955 is a small group known from Korea, Japan, and Taiwan. We carried out a taxonomic study on the Korean species of Scutellathous for the first time. As the result, S. porrecticollis (Lewis, 1894) is revealed to be commonly distributing in Korea and Japan. Additionally, we found that the previous record of Athous jactatus (Lewis, 1894) from North Korea is misidentification of S. porrecticollis. We herein provide redescription of S. porrecticollis and the result of DNA barcoding of congeners belonging to Scutellathous.

• Environmental Analysis Health and Toxicology
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• 제14권1_2호
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• pp.65-73
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• 1999

Dioxins refer to a family of chemicals comprising 75 polychlorinated dibenzo-p-dioxin (PCDD) and 135 polychlorinated dibenzo-p-furan (PCDF) congeners, which may cause skin disorder, human immune system disruption, birth defects, severe hormonal imbalance, and cancer. The effects of exposure of dioxin-like compounds such as PCBs are mediated by binding to the aryl hydrocarbon receptor (AHR), which is a ligand-activated transcription factor. To grasp physicochemical factors affecting human toxicity of dioxins, six geometrical and topological indices, eleven thermodynamic variables, and quantum mechanical descriptors including ESP (electrostatic potential) were analyzed using QSAR and semi-empirical AM1 method. Planar dioxins with high lipophilicity and large surface tension show the probability that negative electrostatic potential in the lateral oxygen may make hydrogen bonding with DNA bases to be a carcinogen.

• Animal Systematics, Evolution and Diversity
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• 제12권3호
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• pp.245-252
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• 1996

경북 경주시 양북면 대본리 대종천 하구 침수역의 모래틈에서 진완보류 1신종, Isohypsibius granditintinus(Hypsibiiidae과)가 채집되어 기재한다. 본 신종은 각피에 과립형 돌기가 배열하지 않는 무리에 속하는, 인두구의 macroplacoids의 수가 3개이고 microplacoid 가 없는 점, lunule과 cuticular bar가 없고 곁가시를 가진 바깥쪽 발톱이 매우 신장되어 있 는 점 등의 형질조합이 Isohypsibius속 내의 여타 유사종들의 경우와 뚜렷하게 다르다.

• Animal Systematics, Evolution and Diversity
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• 제30권2호
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• pp.59-64
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• 2014

Three species of the genus Sciota Hulst, 1888 are recognized from Northeast China: Sciota cynicella (Christoph, 1881), Sciota fumella (Eversmann, 1844), and Sciota adelphella (Fischer von R$\ddot{o} $slerstamm, 1836), of which Sciota cynicella (Christoph, 1881) is reported for the first time from China. This species can be distinguished from congeners by the gray color of basal area, the straight antemedial line and the distinct postmedial line on the forewing; by the stout aedeagus in male genitalia. In this study, a key to Northeastern Chinese species of genus Sciota is presented, and the illustrations of adults and genitalia are also provided.

• Animal Systematics, Evolution and Diversity
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• 제36권1호
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• pp.41-45
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• 2020

The genus Philanthus Fabricius, 1790 in Korea are reviewed, and two species, Philanthus triangulum and P. coronata, are treated. The former is new to Korea. This species is easily separated from congeners by dense punctures in propodral enclosure and tri-forked marking in lower face. DNA barcoding test is supportive in our identification as well as conspecitficity of Korean materials showing variation in size and coloration. The observed data on flower associations of this species specified with domestic localites and date are separately provided. The current status of Philanthus coronatus that has been the only representative of the genus but forgotten for a lengthy time in Korea is discussed.

• 한국습지학회지
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• 제10권2호
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• pp.23-37
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• 2008

The vertical distribution of dioxins and hexachlorobenzene(HCB) in a sediment core was investigated to elucidate historical trends of dioxins and HCB deposited into Upo wetland. The total concentration of dioxin ranged from 8.7 to 66.27 pg/g-dw in Upo sediments deposited, and from 17.64 to 97.03 pg/g-dw in Mokpo. Dioxin fluxes increased from the first-1990s and then reached a maximum in the mid-1990s. The major source of dioxin by comparing the congeners pattern was pentachlorophenol(PCP) used of agrochemicals. The HCB concentration in most of samples was detected below the MDL(Method Detection Limit of 0.5ng/g), except a few samples.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제21권1호
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• pp.68-71
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• 2018

Androgen therapy has proven efficacy in treating patients with bone marrow failure who are not candidates for bone marrow transplantation. Herein, we report on a case of colonic angioectasia secondary to oxymetholone use in an adolescent patient with Hoyeraal-Hreidarsson syndrome (HHS). A 13-year-old Caucasian male with HHS characterized by cerebellar hypoplasia, developmental delay, microcephaly, esophageal strictures and myelodysplasia presented with severe hematochezia from colonic angioectasia secondary to long-term oxymetholone therapy. These vascular lesions resolved spontaneously once this anabolic steroid was discontinued. While androgen therapy is often recommended for certain anemias and myelodysplastic syndromes, clinicians should be aware of the potential complication in developing these perceived uncommon colonic angioectasias. Moreover, pediatric gastroenterologists should familiarize themselves in identifying these vascular lesions by colonoscopy, especially among the high risk groups on long-term anabolic steroid therapy.

• 환경생물
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• 제37권3호
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• pp.278-284
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• 2019

Feldmannia chitonicola is reported as a new record from Korea based on morphological studies in laboratory-cultured materials and molecular analyses. F. chitonicola is mainly characterized by a small size (1-2 mm), erect filaments mostly unbranched, plurilocular sporangia produced on both prostrate and laterally on the basal part of erect filaments, and 2 types (lanceolate and ovate) of sporangia. In our cultures, sporangia production was slower at 10℃ than in 16℃ and 20℃. Our molecular analyses of rbcL and cox1 genes supported its independence from other congeners reported for Korea. This is the first report of F. chitonicola for western Pacific.

• Journal of Species Research
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• 제5권3호
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• pp.385-392
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• 2016

A new species of Tanaidacea is described from the eastern coast of Korea, under the name of Apseudomorpha magna in the family Metapseudidae. The new species can be distinguished from its congeners by the following combination of characters: pleonites 2 and 5 and pleotelson have a large lateral seta; pleopods are biramous, in five pairs, each bearing a two-segmented exopod and a single-segmented endopod; the maxillular palp is two-segmented, with five setae on its distal segment; the pleotelson has a large seta on each anterolateral process; and the mandibular palp has 2, 7, and 13 setae on the first to third segments, respectively.

• Animal Systematics, Evolution and Diversity
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• 제17권2호
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• pp.207-216
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• 2001

제주도와 강릉 일대 해안에서 채집한 동문류 1종, Campyloderes macquariae Johnston을 재기재하여 보고한다. 표본은 조하대의 저질, 해조류의 근경부, 그리고 어망에 걸려 나온 여러가지 무척추동물을 헹군 뒤 플랑크톤 넷트에 걸려 채집하였다. Campyloderes 속은 북태평양 해역에서는 최초로 기록된다. 근연종간 형질 비교와 종내 변이를 고찰하였으며, 일부 형질은 주사전자현미경을 사용하여 그 미세구조를 확인하였다.