• 한국수산과학회지
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• 제29권2호
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• pp.208-229
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• 1996

한국산 연어속에 속하는 연어, 산천어 및 무지개송어 3종의 골격학적 비교 연구를 하였다. 연어속 어류인 연어, 산천어, 무지개송어의 골격을 비교한 결과 두개골과 현수골의 형태나 결합 형태에서 3종간 차이를 나타내었다. 두부 골격중에서는 인설골, 상사골, 부설골, 서골의 형태에서 종간 차이가 뚜렸하였고 계통 분류학적 특징을 잘 나타내었다. 연어의 인설골은 산천어, 무지개 송어에 비하여 가늘고 길며, 끝이 뾰족한 특징을 가졌다. 상사골은 연어가 거의 정삼각형의 모양을 가지고 있으나 산천어나 무지개송어는 가늘고 길며 날개를 가진 형태였다. 본 연구에 나타난 골격 형질 분석 결과 알려져 있는 분류 형질외에 부설골의 형태, 전새개골, 설악골의 형태 및 미추골수 등이 새로운 분류 형질로 나타났으며, 산천어는 연어와 무지개송어의 중간 형질을 가지고 있는 종으로 나타났다.

• 한국수산과학회지
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• 제36권3호
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• pp.270-275
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• 2003

Histochemical characteristic and ultrastructure of the mantle of the granular ark, Tegillarca granosa are described using light and electron microscopy. The mantle of the clam is composed of outer epidermis, connective tissue and inner epidermis. The simple epidermis consists of supporting cells, ciliated cells of the two types and secretory cells of three types. Connective tissue is composed of matrix, collagen fibers, muscular fibers and hemolymph sinus. The columnar supporting cell is covered with microvilli on the free surface. Ciliated cells are distributed in the inner epidermis with numerous cilia, microvilli and tubular mitochondria. Secretory cells could be classified into three types (A, B and C) with morphological features of the secretory granules. Type A secretory cells contains secretory granules with fibrous materials of high electron density Type B secretory cells are more abundant than the other cells, and contains secretory granules of membrane-bounded and high electron density. Secretory granules of the type C cells are divided into fibrous core layer and homogeneous peripheral layer. Type B secretory cells are abundant in the both epidermis of marginal mantle, while large number of type A and C secretory cells are evident in the outer epidermis of the central and umbonal mantle. This result showed that the outer and the inner epidermis of the mantle are related with shell formation and cleaning of the mantle cavity, respectively.

• 한국약용작물학회지
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• 제8권3호
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• pp.243-249
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• 2000

RAPD 분석을 통한 marker선별과 건조약재의 비교, 그리고 내부형태 특징을 통해 당귀3종(種)을 구별할 수 있는 결과를 요약하면 다음과 같다. 1. 50개의 primer중 5개의 primer에서 당귀류 3품종을 모두 구별할 수 있는 특이적인 band가 나타났다. 2. 유연관계 분석에서 중국당귀와 일당귀가 참당귀보다 더 근연관계임을 알 수 있었다. 3. 신선한 잎과 건조된 약재에서 RAPD 재현성이 확인되어 RAPD 분석법을 통해 당귀감별에 응용할 수 있을 것으로 사료된다. 4. 뿌리 내부구조에서 중국당귀는 정상적인 2기사부와 2기목부에 덧붙여 일부 이상비대생장을 보였고, 일당귀나 참당귀의 도관절에 비하여 더 넓고 짧아 계통학적으로 훨씬 더 진화된 것으로 여겨진다. 5. 일당귀는 현저하게 두꺼운 코르크층이 발달한 반면 참당귀의 코르크층 아래에 $5{\sim}7$층의 후각세포층이 환상으로 발달하여 뚜렷한 대조를 이루었다.

• Animal cells and systems
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• 제11권2호
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• pp.147-153
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• 2007

DNA extracted from ancient bones of Cervidae animals was examined to identify the species and to determine the phylogenetic relationships to those from extant cervids. Abundant ancient bones were excavated from Kumsung archaeological site in Jeju Island, Korea, and were identified as Cervidae animals based on morphological features of their antlers and lower mandibles. Their mitochondrial DNA (mtDNA) control region (CR) was partially sequenced and subsequently compared with those previously reported in database. The results confirmed that the ancient sequences are lineage of Cervidae. On the phylogenetic trees constructed using the sequence diversity of the CR sequences of family Cervidae, the ancient DNA sequences were found on distinct clusters. The ancient sequences were located in the subfamily Capreolinae cluster, and six ancient sequences were closely related to those of extant Korean roe deer in Jeju Island and Korean Peninsula. Consequently, the results of this study suggest that the roe deer inhabited Jeju Island in ancient times. However, there is no evidence for the existence of subfamily Cervinae, including Sika deer, while it has been described in several historical records. The results suggest that this finding could contribute to understanding of the origin and phylogenetic relationships of extant and ancient roe deer on Jeju Island.

• 한국어류학회지
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• 제22권4호
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• pp.273-278
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• 2010

왜매치 Abbottina springeri Banarescu and Nalbant의 분자계통학적 위치를 밝히기 위해 한국에 서식하는 버들매치속 2종과 모래주사속 5종의 핵 유전자인 recombination activating gene 1 (RAG1)의 염기서열을 분석하였다. RAG1 유전자 염기서열 정보에 기초한 계통수에서 배들매치 A. rivularis는 단계통군을 형성하는 왜매치, Biwia zezera 및 모래주사속 종들과 분리되었다. 이 계통 내에서 B. zezera는 왜매치와 모래주사속 5종을 구성된 단계통 그룹과 자매계통 관계를 보였다. 분자계통수 상에서 버들매치속 2종은 다계통군으로 나타났고, 이러한 결과는 골격 특징들에 근거한 이들의 계통적 관계를 밝힌 선행연구와 잘 일치하였다. 따라서 입의 피질돌기 유무와 부레의 골낭 유무와 크기 등과 같은 형태적 특징들에 근거한 버들배치속과 모래주사속의 현분류체계는 진화 역사를 잘 반영하지 못하는 것으로 여겨진다.

• 대한족부족관절학회지
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• 제6권1호
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• pp.7-14
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• 2002

Purpose: We investigate the characteristic morphologic features and suggest proper treatment of postaxial polydactyly of the foot Materials and Methods: We analysed 37 cases of postaxial polydactyly. Mean post operative follow up period was 2 years 10 months. We analysed them according to morphological, radiological and operative findings. Patients were classified into extra 5th toe polydactyly and extra 6th toe polydactyly based on the abnormal extradigit, and subdivided into joint origin type, bone origin type and floating type based on duplication pattern. Results: 23 cases were extra 5th toe polydactyly and 14 cases were extra 6th toe polydactyly. Most common types were metatarsophalangeal joint origin type of extra 6th toe polydactyly. Compared with extra 5th toe polydactyly, extra 6th toe polydactyly originated from more proximal part and had not syndactylism. Conclusion: As the duplication level was more distal, degree of syndactylism and nail union was more severe. In case of syndactyly between 5th and 6th toe, abnormal extradigit was 5th toe.

• 한국양식학회지
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• 제18권3호
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• pp.207-214
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• 2005

We report on the diagnosis, pathology, and taxonomy of Perkinsus sp. infection in Manila clams (Ruditapes philippinarum) from Korean waters. Amplimers were designed from internal portions of the non-transcribed spacer (NTS) of P. atlanticus for molecular diagnosis of Perkinsus infection. PCR-based identification methods and an in situ hybridization assay were developed for detection of Perkinsus sp. in live tissues as well as in histological preparations. Hybridization signals were observed around the nucleus of trophozoites. Positive results from PCR and in situ hybridization indicated that Korean Perkinsus sp. is genetically identical with P. atlanticus reported in Europe, which is currently synonymous with P. olseni reported from Australia. Microscopic morphological features of different lift stages of Perkinsus sp. appeared very similar to those of P. atlanticus. Severely infected clams often exhibited white nodules on their mantles and gills as a consequence of inflammation. In lightly to moderately infected clams, Perkinsus sp. was mainly found in gill tissues, whereas the protozoan parasites were found in digestive tracts, gonadal tissues, and foot tissues of heavily infected clams. It is likely that the gills are the portal of the infection and that P. olseni spreads to other tissues as the infection advances. In conclusion, by considering the taxonomic priority of P. olseni, Korean Perkinsus sp. is accepted as P. olseni. P. olseni appears to be common on tidal flats on the western and southern Korean coasts and is considered to be a pathogen capable of causing mass mortality of clams.

• 천문학회보
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• 제39권2호
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• pp.50-50
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• 2014

We present a new catalog of galaxies in the wider region of the Virgo cluster, based on the Sloan Digital Sky Survey (SDSS) Data Release 7. The Extended Virgo Cluster Catalog (EVCC) covers an area of 725 deg2 or 60.1 Mpc2. It is 5.2 times larger than the footprint of the classical Virgo Cluster Catalog (VCC) and reaches out to 3.5 times the virial radius of the Virgo cluster. We selected 1324 spectroscopically targeted galaxies with radial velocities less than 3000 km s-1. In addition, 265 galaxies that have been missed in the SDSS spectroscopic survey but have available redshifts in the NASA Extragalactic Database are also included. Our selection process secured a total of 1589 galaxies of which 676 galaxies are not included in the VCC. The certain and possible cluster members are defined by means of redshift comparison with a cluster infall model. We employed two independent and complementary galaxy classification schemes: the traditional morphological classification based on the visual inspection of optical images and a characterization of galaxies from their spectroscopic features. SDSS u, g, r, i, and z passband photometry of all EVCC galaxies was performed using Source Extractor. We compare the EVCC galaxies with the VCC in terms of morphology, spatial distribution, and luminosity function. The EVCC defines a comprehensive galaxy sample covering a wider range in galaxy density that is significantly different from the inner region of the Virgo cluster. It will be the foundation for forthcoming galaxy evolution studies in the extended Virgo cluster region, complementing ongoing and planned Virgo cluster surveys at various wavelengths.

• 한국한의학연구원논문집
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• 제12권2호통권17호
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• pp.63-73
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• 2006

In the original plant of Arisaematis Rhizomas, the features of external and internal shape of Arisaema amurense var. serratum $N_{AKAI}$ and A. amurense $_{MAXIM}$. are as follows. 1. In the external shape of original plant, Arisaema amurense var. serratum $N_{AKAI}$ has high stem, an oval-elliptic leaflet and a serrate leaf margin. But A. amurense $M_{AXIM}$ has a relatively low stem, an upside oval leaflet and no serrate leaf margin. 2. On the herbs character of original plant, Ansaema amurense var. serratum $N_{AKAI}$ is small in height and diameter, but A. amurense $M_{AXIM}$ is relatively large in height and diameter. 3. On the gathered herbs character of original plant, the section of Arisaema amurense var. serratum $N_{AKAI}$ is brightly white, easily spilt and strong scent. But the section of A. amurense $M_{AXIM}$ is thin yellowish brown, not easily spilt and weak scent. Also the grade of gathered herbs, both can be classified by diameter and external scent. 4. In the current herbs character, Korean and Sichuan Province products are irregullar shape and have no scent, Jilin Province products are regular shape. Also, Guangxi Province products are small size and concave in one side, Hebei Province products are irregular size and shape. 5. In internal shape of original plant, epidermal cell of Arisaema amurense var. serratum is very tight. With the except of micro difference in parenchyma cell of cortex, on the whole there are nearly no differences with A. amurense $M_{AXIM}$. Also, samely in the internal shape, according to collecting sites, epidermis exhibits a lot layer in curving state and secreting duct is developed and vascular bundle and exists between parenchyma cell of cortex. In the future, additional study is needed to distinguish herb and effect between same genus-degree of relatedness.

• 한국어류학회지
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• 제12권1호
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• pp.33-37
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• 2000

1998~1999년 제주도 연안에서 봉고네트와 트롤형자 치어네트로 체장 1.4~10.5 mm의 Laemonema nana 자치어가 총 28개체 채집되었다. 이 종은 제주도 연안을 포함한 주변해역, 대한해협, 동해남서부해역까지 광범위하게 분포하였다. 성장에 따른 Laemonema nana 자치어의 체형변화는 다음과 같다. 1) 지느러미의 여린줄기는 체장이 약 4.5 mm부터 나타나기 시작하며 약 6.8mm는 정수에 달하였다. 2) 머리 꼭대기에 있는 2개의 큰 흑색소포는 체장이 4 mm 이하의 개체에서 볼 수 있다. 3) 꼬리 중앙에 있는 큰 흑색소포는 체장이 2 mm 이하는 1개이지만 성장함에 따라 체장이 약 9 mm에서는 꼬리자루 부근까지 확산되었다. 4) 뒷지느러미 기부의 커다란 흑색소포는 체장이 약 2 mm 이하는 2개이지만 성장함에 따라 꼬리지느러미쪽 방향으로 확산되며 체장 9 mm의 경우 뒷지느러미 기부의 2/3 정도를 차지한다. 5) 국내 미기록 어종인 Laemonema nana의 한국명은 수염모양의 배지느러미가 동일속 어류보다 짧기 때문에 "짧은수염대구"로 명명하고자 한다.