First Record of Two Siriella Species of Mysids (Crustacea: Mysida) from the Korean Waters

조수근 한국수산과학회 2014 Fisheries and Aquatic Sciences Vol.17 No.3

Two pelagic species Siriella izuensis Murano and Fukuoka, 2008 and Siriella japonica Ii, 1964, are reported for the first time from the Korean waters, together with descriptions and illustrations. S. izuensis can be distinguished from its closest relative, Siriella japonica, by the normal inner flagellum of the antennule of males, as opposed to the swollen proximal part in S. japonica, and by the slightly more distinct tendency of alternate arrangement of spines on the distal third lateral margin of the telson than in S. japonica. S. izuensis and S. japonica differ distinctly from other related species by a combination of the triangular rostral plate, the moderate size of the eyes, the form and arrangement of the lateral spines of the telson, and six or seven graded spines on the distal outer margin of the uropodal exopod. A taxonomical key is given for the genus Siriella from the Korea waters.

Recurrent Bilateral Branch Retinal Artery Occlusion with Hearing Loss and Encephalopathy: The First Case Report of Susac Syndrome in Korea

조수근,김중곤,권순억,이충욱,임현우,윤영희 대한의학회 2011 Journal of Korean medical science Vol.26 No.11

We report the first case of Susac syndrome in Koreans, in a 23-yr-old female patient who presented with sudden visual loss and associated neurological symptoms. Ophthalmic examination and fluorescein angiography showed multiple areas of branch retinal artery occlusion, which tended to recur in both eyes. Magnetic resonance imaging showed dotlike,diffusion-restricted lesions in the corpus callosum and left fornix, and audiometry showed low-frequency sensory hearing loss, compatible with Susac syndrome. She received immunosuppressive therapy with oral steroid and azathioprine. Three months later all the symptoms disappeared but obstructive vasculitis have been relapsing. This patient demonstrated the entire clinical triad of Susac syndrome, which tends to occur in young females. Although this disorder has rarely been reported in Asian populations, a high index of suspicion is warranted for early diagnosis and timely treatment.

한국어 내핵 관계절의 용인성에 대한 연구

조수근 대한언어학회 2014 언어학 Vol.22 No.2

The purpose of this paper is to investigate whether Korean speakers accept internally-headed relative clauses and to decide whether they are apparently shown in Korean. To achieve these goals, a judgement task constructed on the basis of grammaticality has been conducted on 62 Korean speakers. By following 4 types of internally-headed relative clauses, twenty test sentences were created for a quantitative study. The test subjects were asked to decide if the test sentence was correct or not. Their answers indicated the degree of the subjects` knowledge on internally-headed relative clauses, by responding either "right" or "wrong" to the question. The results of the study showed that Korean speakers correctly judged the grammaticality of internally-headed relative clauses at a rate of less than 70%, suggesting that they accept the existence of internally-headed relative clauses restrictively. The results of the study also showed that dative and oblique nouns are rarely selected as head nouns in internally-headed relative clauses in Korean, which is consistent with Noun Phrases Accessibility Hierarchy(NPAH) by Keenan and Comrie (1977).

한국 서해산 살조개 (Protothaca jedoensis) 의 식물플랑크톤 먹이 선택성

조수근,김용호,김지현,이창훈 한국패류학회 2004 The Korean Journal of Malacology Vol.20 No.1

Based on both field and laboratory experiments, seasonal changes in the species composition and abundance of phytoplankton in the gut contents of the jedo venus clam, Protothaca jedoensis, and its feeding selectivity were investigated. The phytoplankton in the gut contents comprised Bacillariophyceae (diatom), Chlorophyceae, Chrysophyceae, and Dinophyceae, of which the diatoms being the most predominant throughout the year. Although the number of species and the abundance of phytoplankton in the sea water were always more diverse and more abundant than in the gut contents, the relative number and abundance were generally similar in the seawater and in the gut contents. In the laboratory experiments, the relative abundances of Coscinodiscus marginatus and Thalassirosira eccentrica were much more higher in the gut contents than any other algal species, while Paralia sulcata, Skeletonema costatum, and Eucampia zodiacus were abundant in order of cell density in the ambient water. These results suggest that P. jedoensis may feed preferably on single algal cell or smaller chains of algal cells. 한국 서해안에 서식하는 살조개의 먹이를 조사하기 위해 계절별 현장조사와 실험실 먹이 실험을 병행하였다. 소화관내 식물플랑크톤은 분류군별로는 규조류, 와편모조류, 황색편모조류, 녹조류 등이었으며, 개체 수로는 규조류가 96.0%로 가장 높았고, 그 외 와편모조류 1.46%, 황색편모조류 1.42%, 녹조류 0.05%, 기타 0.07%였다. 춘계에 해당하는 3월에 가장 다양한 종 수와 함께 많은 개체 수의 식물플랑크톤이 해수와 소화관에서 관찰되었다. 살조개의 소화관 내용물의 식물플랑크톤의 월별 출현 종과 출현 개체 수는 주변 해수에 분포하는 식물플랑크톤의 월별 종 수와 출현 개체 수에 비해 낮은 수치였으나 그 경향은 서로 유사하였다. 소화관에서 3월에 나타난 우점종은 Thalassiosira leptopus, Paralia sulcata, Coscinodiscus marginatus였으며, 6월과 9월에는 Coscinodiscus marginatus, Thalassiosira leptopus, Paralia sulcata, 12월에는 Thalassiosira leptopus, Coscinodiscus marginatus, Paralia sulcata가 양적으로 우점하여 나타났다. 해수 중의 우점종과 소화관 내의 우점종과는 일치하지 않았으나, Thalassiosira leptopus는 비교적 높은 선택성 지수를 나타냈고, Coscinodiscus marginatus와 Paralia sulcata는 주로 양의 선택성 지수를 나타내었다.

군산 연안 양식 바지락 (Tapes philippinarum)의 형태와 성장에 관한 연구

조수근 부경대학교 수산과학연구소 1995 硏究業績集 Vol.20 No.-

Mysidacea (Crustacea) from the Korea Strait and Its Adjacent Waters

조수근,마채우,서해립,홍성윤,Jo, Su-Geun,Ma, Chae-U,Seo, Hae-Rip,Hong, Seong-Yun The Korean Society for Integrative Biology 1998 Korean journal of biological sciences Vol.2 No.1

Thirteen pelagic species of mysids, representing nine genera, are reported from the Korea Strait and its adjacent waters. Of these, seven species, Doxomysis quadrispinosa, Meterythrops microphthalma, Pleurerythrops secunda, Pseudanchialina pusilla, Siriella gracilis, S. okadgi, and S. thompsoni, are newly recorded from the Korean waters. A taxonomic key and illustrative figures are given.

산출실험을 통한 한국인 성인 학습자의 영어 관계절 습득 연구

조수근 한국영어학학회 2014 영어학연구 Vol.20 No.3

Cho, Sookeun. 2014. A Study on the Acquisition of English Relative Clausesby Korean Adult Learners through an Production Test. English Language and Linguistics 20.3, 99-114. The purpose of this paper is to investigate the acquisition of English relative clauses by Korean adult learners using an production test and to determine the source of errors by analyzing error types made by Korean learners.To achieve these goals, a sentence combining test was administered on 20 Korean speakers. Thirty test sentences were created according to six types of relative clauses for a quantitative study. In this study, we found that the order of difficulty in the acquisition of relative clauses is as follows: subject < direct object = possessive< object of preposition < indirect object < object of comparison. We also found that there is statistically significant difference in regard to the order. In addition,we found that the contrasts in the acquisition of English relative clauses by Koreanlearners are mostly attributed to the fact that the processing difficulty of the gap in the relative clauses increases with its structural distance from its head according to the Structural Distance Hypothesis suggested by O’Grady(1997).

뒷모습

조수근 수필미학 2015 수필미학 Vol.8 No.-

동해 영일만 쇄파대에 서식하는 곤쟁이 Archaeomysis kokuboi와 Acanthomysis nakazatoi의 성장단계에 따른 주야 및 조석간 분포

조수근,김청아,서해립,Jo, Soo-Gun,Kim, Chung-A,Suh, Hae-Lip 한국해양학회 2012 바다 Vol.17 No.2

한국 동해안 영일만 쇄파대에 서식하는 두 종의 곤쟁이, Archaeomysis kokuboi와 Acanthomysis nakazatoi의 성장 단계에 따른 주야 및 조석간의 분포에 관해 조사하였다. 곤쟁이의 채집은 썰매형 채집망을 이용하여 3 지점, 즉 수심 1 m의 해수 표층과 해저 모래 표면, 물가장자리에서 2시간 간격으로 24시간 동안 이루어졌다. Archaeomysis kokuboi의 유체는 주야간 모두 출현개체수가 없거나 매우 적어 주야간의 차이를 알 수 없었다. A. kokuboi의 미성숙개체는 해수표층에서 야간의 밀도가 주간보다 유의적으로 더 높았으나, 다른 곳에서는 주야간 밀도 차이가 없었다. A. kokuboi 성체, 특히 숫컷에서는 바닥에서 주간의 밀도가 야간보다 유의적으로 더 높았으며, 해수표층에서는 주야간 모두 전혀 출현하지 않았다. 그에 비해서 Acanthomysis nakazatoi의 경우, 유체는 모든 정점에서 주야간에 유의적인 밀도 차이가 없었으나, 바닥에서 가장 높은 밀도로 분포하였다. A. nakazatoi의 미성숙단계에서도 모든 곳에서 주야간에 유의적인 밀도 차이가 없었으며, 해수표층에는 전혀 출현하지 않았다. A. nakazatoi의 성체, 특히 암컷에서는 바닥에서 야간의 밀도가 주간보다 유의적으로 높았고, 다른 장소에서는 주야간 밀도 차이가 없었다. 두 종 곤쟁이의 밀물과 썰물 간의 밀도 차이는 A. kokuboi의 미성숙개체를 제외하고는 유의적인 차이가 없었다. A. kokuboi의 미성숙개체, 특히 숫컷은 해수표층에서 썰물 때의 밀도가 밀물 때보다 유의적으로 높았다. 쇄파대 모래해변에서 두 종의 주야간 분포는 종간에는 물론이고 종내의 성장단계에 따라서도 약간의 차이가 있었으며, 밀도변화는 주로 주야간에 의해 일어나고 조석의 영향은 크지 않은 것으로 나타났다. 또 쇄파대에서 A. nakazatoi의 개체수 밀도는 주야간 모두 A. kokuboi보다 훨씬 더 높았으며, 유체단계부터 성체에 이르기까지 높은 밀도로 주로 모래바닥에 서식하였다. 이러한 결과는 A. nakazatoi는 유체단계부터 모래 저층으로의 잠입능력이 A. kokuboi보다 더 뛰어나며 동해안 쇄파대에서 매우 잘 적응한 곤쟁이라는 것을 의미한다. This study investigated the diel and tidal distributions of the two mysids, Archaeomysis kokuboi and Acanthomysis nakazatoi, in relation to their growth stages in the sandy surf zone of Yongil Bay, located on the southeastern part of Korean Peninsula. Sampling was conducted with a sledge net at every two hours for almost 24 hours at three sites: water edge, water surface and sand bottom both in 1-m deep water areas. The abundance of Archaeomysis kokuboi juveniles was too low to count both in day and night samples. While there was no difference in immature A. kokuboi abundance between day and night in the bottom or water edge, that at the water surface was significantly higher at night than daytime. The abundance of A. kokuboi adults, especially of males, in the bottom was significantly higher in daytime than night and no individuals appeared to the water surface either day or night. In comparison, the abundance of Acanthomysis nakazatoi juveniles between day and night did not differ significantly at all the three sites, with the highest number being distributed in the bottom. The abundance of immatures between day and night also did not differ significantly and no individuals appeared to the water surface either day or night. The abundance of A. nakazatoi adults, especially females, in the bottom was significantly higher at night than daytime and there was no significant difference in abundance between day and night in the other sites. There was also no significant difference in abundances of the two species between ebb and flood tides, except for A. kokuboi immatures which appeared significantly more during the ebb tides at the water surface. Overall, the distribution of the two sympatric species, A. kokuboi and A. nakazatoi, was not the same in the sandy surf zone. Its difference seems to depend on their stages of growth, and the change in their abundance may be influenced more by diurnal rhythms than tidal effects. The population density of A. nakazatoi in the sandy surf zone was much higher than that of A. kokuboi, and relatively higher densities in all growth stages of the former were found in the sandy bottom ranging from juveniles to adults. These results indicate that A. nakazatoi has exceedingly better ability of sand burrowing even from the juvenile stage, and thus is an ecologically better adapted species in the sandy surf zone than another sympatric species, A. kokuboi.

구어 말뭉치 분석을 통한 한국어 내핵관계절 연구

조수근 21세기영어영문학회 2016 21세기영어영문학회 학술대회 Vol.2016 No.09