• Animal Systematics, Evolution and Diversity
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• 제21권1호
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• pp.81-91
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• 2005

제주도의 조하대 저 질에서 채집 한 해 양 선충류 1신종 제주곁도마뱀 선충 (Faradraconema jejuense)을 기재하였다. 제주곁도마뱀선충은 가늘고 긴 형태의 유사한 체형과 암수 모두 다 동일한 형태의 두부감각기관을 가지는 점에서 P antarcticum과 유사하지만 몸 뒤쪽 부위의 측면 아래에 수컷은 9개에서 10개, 암컷은 11개에서 12개, 배면 아래에 수컷은 16개에서 17개, 암컷은 17개에서 18개의 후미흡착기관을 가지는 점, 1쌍의 두부 돌기를 가지는 점, 안점을 가지지 않는 점, 몸 중앙 측면의 표면이 구별되는 점과 같은 중요 형질에서 쉽게 구분되어 진다. 이 논문은 한국의 곁도마뱀선충속 해양 선충류에 대한 첫 분류학적 보고이다.

• Animal Systematics, Evolution and Diversity
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• 제21권2호
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• pp.243-250
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• 2005

2000년 7월부터 2005년 5월까지 울릉도와 추자도에서 SCUBA 다이빙으로 채집된 해면동물을 동정$\cdot$분류한 결과 깃해면속(Mycale)의 2종 죽도깃해면[Mycale (Aegogropila) jukdoensis n. sp.]과 추자깃해면[Mycale (Mycale) chujaensis n. sp.)이 신종으로 밝혀졌다. 죽도깃해면은 M. grandis와 골편의 구성에서는 유사하지만 시그마체와 라피드가 M. grandis의 것보다 크고, 두 종류의 준아령침상체를 가진다. 또한 죽도깃해면의 이조상체 I은 M. grandis의 것보다 작다. 추자깃해면은 M. sulgata와 성장형태와 미소골편의 크기가 매우 유사하지만, 추자깃해면은 두 종류의 준아령침상체를 갖는 대신 M. sulgata는 단지 한 종류를 갖는다.

• Animal Systematics, Evolution and Diversity
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• 제14권1호
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• pp.43-49
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• 1998

1996년부터 1997년까지 서해와 제주도를 비롯한 국내 연안에서 채집된 흉상 어속 어류를 재검토한 결과 Carcharhinus brachyurus, C. dussumieri, C. limbatus, C. plumbeus, C. sorrah의 5종이 분류되었으며, 이 가운데 Carcharhinus dussumieri 흰뺨상어와 C. sorrah 검은꼬리상어는 미기록종으로 확인되었다. 흰뺨상어는 제2등지느러미만 검은색을 띠고, 검은꼬리상어는 꼬리지느러미 하엽과 제2등지느러미, 가슴지느러미 끝에 뚜렷한 검은색을 띠고 있어서 무태상어, 흉상어 등 국내의 기타 흉상어속 어류와 잘 구분되었다. 한편 정(1977)의 C. gangeticus와 C.bracyurus는 각각 C. plumbeus와 C. limbatus임이 명백하였으며, C. limbatus에 대해서는 국명을 남방상어로 하였다.

• Animal Systematics, Evolution and Diversity
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• 제17권2호
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• pp.171-177
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• 2001

작약도에서 서식하고 있는 쌍뾰족혹히드라(Obelia bicuspidata Clarke, 1875)의 생활사를 서식지와 실험실에서 조사하였다. 쌍뾰족혹히드라는 종히드라과(Campanulariidae)에 속하고 주로 뻘 해안에 있는 작은 바위 또는 굴의 패각에 부착한다. 해파리를 방출하며 해파리 눈(medusa buds)은 일년에 2번, 즉 3월과 6월 사이, 9월과 10월 사이에 발달한다. 폴립 성장의 최적온도는 4-8$^{\circ}C$로 나타났고 수온이 9$^{\circ}C$이상으로 올라가면 퇴화하기 시작하여 수표면 온도가 약 25一되는 8월에는 히드라협이 모두 퇴화하는 것으로 나타났다. 해파리는 작고 폴립에서 방출된 후 약 9일 후 생식선이 발달하였다. 본 연구에서 쌍뾰족혹히드라는 냉수성 종으로 판명되었다.

• Animal Systematics, Evolution and Diversity
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• 제14권1호
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• pp.51-57
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• 1998

완도산 등줄쥐의 분류학적 위치를 재검토하기 위해, 한국의 8개 지역에서 채집한 등줄쥐(Apodemus agrarius)의 31개 형태적 형질들을 다변량분석방법으로 분석하였다. 두 군으로 나누어 졌는데, 6개 지역(태백산, 월악산, 청주, 지리산, 군산, 진도)의 작은 형과 2개 지역(완도, 제주도)의 큰 형이었다. 6개 지역의 작은 형은 Thomas(1908)가 밝힌 대로 A. a. coreae이고, 제주도 지역의 큰 형은 Johnson과 Jones(1955)이 이 기재한 대로 A. a. chejuensis임이 확이되었다. 뿐만 아니라, 완도의 큰형은 Joh(1989)가 제안한대로 A. a. chejuensis임도 확인되었다.

• Animal Systematics, Evolution and Diversity
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• 제32권1호
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• pp.28-37
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• 2016

We describe the morphological characteristics of two morids, Gadella jordani and Physiculus japonicus, belonging to the order Gadiformes, based on Korean specimens collected from the Korean ocean. Two specimens of Gadella jordani was first collected from Jeju Island, Korea and the East Sea, Korea, in 2013-2014. This species is characterized by 8, 67-69 dorsal fin rays, 66-71 anal fin rays, 5+13 gill rakers, no barbel on the lower jaw, no vomerine teeth, and a ventral luminous organ closer to the anus than to the interventral line. We described it as the first record to the Korean fish fauna, and proposed the new Korean name "Min-su-yeom-dae-gu-sok" for the genus Gadella, and "Min-su-yeom-dae-gu" for the species G. jordani. Physiculus japonicus was first reported by Koh and Moon in the year 1999 based on a single specimen in Korea. However, no study has been attempted to describe the morphological characteristics in Korea since then. In 2013-2014, three specimens of P. japonicus was collected from Jeju Island, Korea and the East Sea, Korea, and we redescribe P. japonicus in detail. This species is characterized by 9-10, 63-64 dorsal fin rays, 70-73 anal fin rays, 3+7-8 gill rakers, a short barbel on the lower jaw, and a ventral luminous organ equidistant between the interventral line and the anus.

• Animal Systematics, Evolution and Diversity
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• 제28권3호
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• pp.215-219
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• 2012

To examine genetic divergences of two endemic Sorex caecutiens subspecies from Korea (S. c. hallamontanus in Korean Jeju Island and S. c. annexus in the mainland Korean Peninsula), we obtained partial cytochrome oxidase I (COI) sequences (429 bp) and complete cytochrome b sequences (1,140 bp) from the two Korean subspecies, and we compared these sequences to the corresponding sequences of S. caecutiens, obtained from GenBank. We found that Jeju S. c. hallamontanus is one of three clades within S. caecutiens, with an average Jukes-Cantor distance of 1.57% in the COI sequences and the distance of 2.07% and 11 fixed site differences in the cytochrome b sequences, indicating that Jeju S. c. hallamontanus is one endemic subspecies with concordant genetic distinctness, although further analyses with nuclear DNA sequences are necessary to confirm these findings. However, S. c. annexus from the mainland Korean Peninsula was not divergent from S. c. macropygmaeus from northeastern China and adjacent Russia, indicating that S. c. annexus from the mainland Korean Peninsula is another endemic subspecies with only morphological differences, although it is necessary to reexamine the subspecies status of S. c. annexus.

• Animal Systematics, Evolution and Diversity
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• 제28권3호
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• pp.192-207
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• 2012

To supply the morphological and ecological information of oligotrich ciliates in Korea, water samples were seasonally collected in Gwangyang Bay and Jinhae Bay from August, 2010 to February, 2012 and processed by quantitative protargol staining method. As a result, six species belonging to the genus Strombidium Clapar$\grave{e}$de and Lachmann, 1859 are identified: Strombidium emergens Kahl, 1932; S. dalum Lynn et al., 1988; S. epidemum Lynn et al., 1988; S. tressum Lynn et al., 1988; S. bilobum Lynn and Gilron, 1993; S. pollostomum Lynn and Gilron, 1993. These six species were newly reported from Korean coastal waters. Strombidium emergens is a middle sized Strombidium ($20-50{\mu}m$ in length) and has open and deep oral groove to girdle portion. Strombidium dalum is a small sized Strombidium (${\geq}20{\mu}m$ in length), that has torch-like spiral anterior membranelles and an inverted triangles-shaped macronucleus on the posterior pole. The small sized S. epidemum has conspicuous trichites surrounding the girdle portion and ventral membranelles distinctly separated from anterior membranelles. The small sized S. tressum has torch-like spiral and extremely long trichites among the cilia of anterior membranelles. The middle sized S. bilobum has a bilobed macronucleus. Strombidium pollostomum is also a small sized Strombidium but its ventral membranelles are continuously connected with anterior membranelles. The five species except S. emergens occurred frequently over the wide range of water temperatures and salinities.

• Animal Systematics, Evolution and Diversity
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• 제28권3호
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• pp.168-177
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• 2012

Two stichotrichid ciliates, collected from marine waters in Jeju Island, were identified as Afroamphisiella multinucleata Foissner et al., 2002 and Pseudokahliella marina (Foissner et al., 1982) Berger et al., 1985. They are recorded for the first time in Korea. The descriptions are based on examinations of living as well as protargol-impregnated specimens. These species are characterized as follows. Afroamphisiella multinucleata has a body size in vivo of $70-95{\times}20-35{\mu}m$; elongate rectangular in shape; contractile vacuole located slightly above mid-body. The adoral zone is bipartited into 3 distal and 13-17 proximal membranelles and occupies 28-35% of the body length. The frontal row comprises 1-4 cirri and one buccal cirrus. The amphisiellid median cirral row is composed of 14-21 cirri, 10-19 left marginal cirri, and 21-30 right marginal cirri. Cortical granules are yellowish. 11-20 globular/ellipsoidal macronuclear nodules arrange proximally along the cell margins. Pseudokahliella marina has a body size in vivo of $110-195{\times}40-110{\mu}m$ and broadly elliptical in shape. The adoral zone of the membranelles occupies 50-60% of the body length, and is composed of 41-70 membranelles. A prominent frontal scutum is present. The contractile vacuole is located below the mid-body. There are 11-13 frontoventral rows, including marginal rows. Caudal cirri and transverse cirri are absent. Three invariable non-fragmented bipolar dorsal kineties are present. The left and right marginal rows are composed of 22-35 and 28-40 cirri, respectively. Colourless cortical granules are present. 8-11 spherical/ellipsoidal macronuclear nodules are connected with each other by thread-like tructures, forming an inverted C-shape.

• Animal Systematics, Evolution and Diversity
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• 제26권1호
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• pp.15-19
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• 2010

The Russian ratsnake, Elaphe schrenckii, is found in Russia, China, and Korea, and is considered to be an endangered species by the Ministry of Environment in South Korea. Due to habitat loss and use in oriental medicine, their population has been severely decimated. In South Korea, two subspecies of E. schrenckii has been defined according to body color: E. s. schrenckii (blackish) and E. s. anomala (yellow-brownish). Molecular genetic studies on Elaphe schrenckii are very scarce and the taxonomy of Elaphe schrenckii subspecies is uncertain. From the present study, we attempted to identify the genetic differences of these two subspecies using species-specific microsatellites developed from the genomic library of E. schrenckii. Nine polymorphic loci were tested on 19 individuals from E. s. schrenckii (n=10) and E. s. anomala (n=9) in South Korea. The mean number of alleles was 3.78 in E. s. schrenckii and 4.11 in E. s. anomala. The average expected heterozygosity was 0.542 and 0.511 in E. s. schrenckii and E. s. anomala, respectively. We found a lack of genetic structure between two subspecies ($F_{ST}=0.016$) and no genetic discrimination between two subspecies was found. Based on the present findings by microsatellites, two subspecies can be considered as one species, E. schrenckii. However, further investigations on taxonomical status using mitochondrial and nuclear DNA sequences need to be performed and morphological & ecological data should be revised. The genetic markers should benefit future studies of the endangered species of other Elaphe species for the study of genetic diversity and potential conservation management.