• Title/Summary/Keyword: 비늘

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Diet Composition of the Mirror Dory, Zenopsis nebulosa in the South Sea, Korea (한국 남해에서 출현하는 민달고기(Zenopsis nebulosa)의 위내용물 조성)

  • Jae-Ik Cho;Da Yeon Kang;Hyeon Ji Kim;Seung-Jong Lee;Gun Wook Baeck
    • Korean Journal of Ichthyology
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    • v.35 no.4
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    • pp.347-353
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    • 2023
  • Zenopsis nebulosa were collected by bottom trawl net from 20 areas in the South Sea of Korea during 2021 (February, May, August, November). The range of total length was 10.1~50.2 cm and empty stomach rate was 45.8%. The most important prey of Z. nebulosa was Pisces, with Trichiurus japonicus, Trachurus japonicus and Benthosema pterotum. And the second important prey was Euphausiacea. Z. nebulosa showed dietary shift by size class. In the <20.0 cm size class, Trachurus japonicus was dominant prey item. In the 20.0~25.0 cm size class, Trichiurus japonicus was dominant prey item. In the ≥25.0 cm size class, B. pterotum was dominant prey item. Analysis of the mean weight of preys per stomach (mW/ST) increased with individual size.

Description of Aedes (Aedimorphus) alboscutellatus occuring in Korea (한국산 숲모기 Aedes (Aedimorphus) alboscutellatus에 대한 분류학적 기술)

  • Lee, Kwan Woo;Hunt, Allen N.;Fleicher, Philip E.
    • Parasites, Hosts and Diseases
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    • v.21 no.1
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    • pp.111-117
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    • 1983
  • 1979∼1980연 칠월초에 서부 비무장지대 (DMZ)에서 모기 유충채집을 실시한 바 Aedes alboscutellatus의 유충을 제집하여 사육한 결과 성충(♀,♂), 완전유충, 유충 및 편의 탈피각등 분류에 필요한 자료를 얻었다. 이 종은 Reisen등(1971)에 의하여 한국에서 처음 성충(♀)채집을 기록하였으나 이를 확증할 만한 표본이나 분류학적인 기재가 없어 분류상의 오독으로 간주되어 왔었다. 저자등은 본 채집을 통하여 분류상 필요한 모든 자료를 수집하였기에 성충(♀, ♂), 유충, 항, 자충생식기등의 특징을 Reinert(1973)의 기재와 상세히 비교 검토한 결과 웅충에서 gonostylar claw와 basal mesal lobe에 있는 강모의 수가 다르고 자웅충에서는 subspiracular area에 횐 비늘들이 모여있는 점을 발견하였다. 그러나 이들 차이점을 여기에서는 단지 지리적 변화로 간주하였으므로 더 많은 수의 채집을 통하여 보다 확실한 구각이 요구된다 이 표본의 장기보관을 위하여 암수 각 한개섹의 표본과 그에 수반되는 유충 및 편의 탈피곡 표본을 미국 Smithonian연구소에 보냈으며 나머지는 미 8군 예방의무부 곤충연구실에 보관되어 있다.

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Morphological Changes of Pre-Astronaut's Hair During Spaceflight Training - A Case Report - (우주비행 훈련 기간에 채취한 예비우주인 모발의 형태적인 변화 - 증례 보고 -)

  • Lee, Weon-Kun;Chang, Byung-Soo
    • Applied Microscopy
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    • v.39 no.4
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    • pp.365-371
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    • 2009
  • This study was investigated to observe morphological changes of two pre-astronauts' hair, male and female by electron microscopy and to analyze its tensile strength by using rheometer. The surface of those two pre-astronauts' hair, which were very rough and irregular, contained separated scales and destroyed remnants of cuticular cells. Also, there were many holes on the cytoplasm of the cuticular cells which forms the cuticle layer. The destruction begins when the endocuticle where the holes form gets destroyed. And then, The tensile strength of female pre-astronaut's hair was 14.60 mm which is 10% reduced, compared to that of the normal healthy hair. Thus, this result thought to be due to the prolonged change of the biorhythm and psychological instability of the pre-astronauts.

First Record of the Gobiid fish, Clariger chionomaculatus (Perciformes: Gobiidae) from off Geojedo Island, Korea (우리나라 거제도 연안에서 채집된 망둑어과 첫기록종, Clariger chionomaculatus)

  • Cho, Hyun-Geun;Kim, Byung-Jik
    • Korean Journal of Ichthyology
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    • v.32 no.2
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    • pp.110-114
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    • 2020
  • A single specimen (40.5 mm in SL) of Clariger chionomaculatus was collected at 4 m depth on mud bottom from off Geojedo Island, Korea. This species is characterized by having an elongated body without scales, several barbels below eyes, I, 12~15 second dorsal fin rays, I, 12~14 anal fin rays; 19~20 pectoral fin rays with one free soft ray on upper part, and a unique color pattern with numerous white blotches on dorsal part of body. Because it has been known from Japan only to date, we describe in detail C. chionomaculatus as the first record from Korea. A new Korean name, "Huin-jeom-wae-mang-dug", is proposed for the species.

First Record of the Two Driftfish, Psenes maculatus, and Psenes cyanophrys (Nomeidae: Perciformes), from Korea (경남 통영해역에서 발견된 한국 미기록 노메치과 어류 2종 Psenes maculatus와 Psenes cyanophrys (노메치과, 농어목)에 대하여)

  • Myoung, Jung-Goo;Cho, Sun-Hyung;Kim, Jong-Man;Kim, Yong-Uk
    • Korean Journal of Ichthyology
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    • v.13 no.3
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    • pp.195-200
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    • 2001
  • Psenes maculatus and P. cyanophrys of family Nomeidae were collected for the first time off the coast of Tongyeong, Kyongsangnam-do, Korea. Specimens were catched with drifting seaweed patches on June and July, 1998. Young Psenes maculatus has six black bands ('<' shape) on the body, and 'Ttimul-reung-dom' is proposed as the Korean name. Psenes cyanophrys differs from P. pellucidus in having a compressed oval body shape scales on the check, and 16 longitudinal lines on the body. 'Jul-mu-nui-mul-reung-dom' is proposed as the Korean name.

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First Record of Two Sinistral Flounders (Pleuronectiformes) from Korea (한국산 가자미목 어류 2 미기록종)

  • Lee, Chung-Lyul;Lee, Chul-Sang
    • Korean Journal of Ichthyology
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    • v.19 no.4
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    • pp.365-370
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    • 2007
  • Two species, Psettina tosana and Pseudorhombus oculocirris, were collected firstly off the Saryang Island, South Sea of Korea. P. tosana is clearly distinguished from its related species, P. gigantea and P. iijimae, in having 9~10 pectoral fin rays, fewer number of lateral line scales, colorless snout region, and no gill rakers on the upper limb of gill arch. P. oculocirris much differs from P. pentophthalmus in having flattish and free rays of anterior dorsal fin, lots of scales in the lateral line, and tubular anterior nostril with flap on ocular side only.

Fine Structure of Damaged Hair Shaft by Daily Treatment of Heat for a Beautiful Face (미용을 위한 일상적인 열처리에 의해서 손상된 모발의 미세구조)

  • Chang, Byung-Soo
    • Applied Microscopy
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    • v.33 no.3
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    • pp.215-222
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    • 2003
  • The ultrastructure of damaged hair shaft from blow-drying at typical temperature $40{\sim}170^{\circ}C$ for daily beautiful face have been investigated by using transmission electron microscope and scanning electron microscope. When we used to hair dryer for a long time in our everyday life, the following morphological alternations were found in hair. First, the partial of scales in outer cuticle were detached simultaneously with separation of intercellular membrane complex of cuticle cells. Then hair broke cuticle off and exposed to cortex. Secondly, the cortical cell in the cortex was fissured into its macrofibril. The melanin granules were scattered between macrofibrils. As a result, I confirmed that blow-drying removed the hair's bonded water and made hard on hair which lost elasticity. After all, hair showed irregular, rough surface and vanished its luster.

New Record of the Gobiid Fish, Parioglossus dotui(Pisces, Gobiidae) from Korea (한국산 망둑어과 어종 1미기록종, Parioglossus dotul)

  • Kim Yong Uk;Han, Kyeong Ho
    • Animal Systematics, Evolution and Diversity
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    • v.9 no.1
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    • pp.51-59
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    • 1993
  • A gobiid fish, Parioglossus dotui Tomiyama is described from 359 specimens collected at Cheju-do and Pusan, in August 1994 of 1986. This is the first definitive record of the species in the Korean waters. Parioglossus dotui having a small-sized body usually is found swimming in schools. The branchiostegals are 5 in number on each side. It grows up to 40mm in total length. Most of ventral fins are separated and connected with rudimentray membrane. In this species, the lateral line were indistincet or absent. The caudal fin slightly emarginates or truncates in both sexes, with a dark spot at the border of the base. It Inhabits inlet waters and estuaries of rivers. "Deungsul mang-dug" is proposed as Korean name of this species.

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Synopsis of Family Mugilidae (Perciformes) from Korea (한국산 숭어과 어류의 분류)

  • LEE Chung-Lyul;JOO Dong-Soo
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.27 no.6
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    • pp.814-824
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    • 1994
  • The taxonomic revision of the family Mugilidae from Korea was made based on the fish specimens collected from the coasts of the Korea from July 1990 to July 1994. The family Mugilidae was classified into three species belonging to two genera: Mugil cephalus, Liza haematocheilus and Liza carinatus. Previousely Mugil japonicus reported as a species from Korea was confirmed into junior synonym of Mugil cephalus. based on the external and internal morphological characters. A new key to the genera and species of family Mugilidae was proposed and described their distribution in Korea.

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Occurrence of a Natural Intergeneric Hybrid, Rhodeus uyekii${\times}$Acheilognathus signifer (Pisces : Cyprinidae) from Jojongcheon Bukhan River (각시붕어 Rhodeus uyekii와 묵납자루 Acheilognathus signifer (Pisces : Cyprinidae)의 속간 자연 잡종의 출현)

  • Kim, Chi-Hong;Lee, Wan-Ok;Kang, Yong-Jin;Baek, Jea-Min
    • Korean Journal of Ichthyology
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    • v.22 no.4
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    • pp.225-229
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    • 2010
  • A intergeneric hybrid between Rhodeus uyekii and Acheilognathus signifer was collected in the Jojongcheon Bukhan River. The hybrid showed intermediate characteristics of two parental types in some key characters, such as color pattern of body, pigmentation of dorsal, anal, and caudal fins, and body spot and stripe. In addition, the hybrid had a fairly large number of lateral line scales, while it lacked a barbel, which is known as a key intergeneric character. The probable occurrence of a natural hybrid is supported by a viable $F_1$ hybrid produced with the parental species.