• 한국수산과학회지
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• 제50권4호
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• pp.396-405
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• 2017

We observed the osteological development in larvae and juveniles of Korean spotted sleeper Odontobutis interrupta bred in the laboratory in April 2014. Immediately after hatching, the prelarvae, which were about 4.27 mm long, showed ossification of the premaxillary bones in the upper jaw and the dentary and articular bones in the lower jaw. At 7.11 mm, the larvae showed complete fusion of the post-cleithra and ossification of the scapulae with the appearance of one hole. At 8.65 mm, the larvae showed ossification of seven ribs from the third abdominal vertebra and an increase in the length of the neural spine and hemal spine. The number of caudal fin rays increased to 19. At 11.9 mm, the juveniles showed ossification of three procurrent rays on the side of the parhypural bone as well as ossification of two procurrent rays on the side of the epural bone, indicating the complete ossification of all spicules.

• 한국발생생물학회지:발생과생식
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• 제19권4호
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• pp.189-196
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• 2015

This study was examined the ovogenesis of Ussurian bullhead, Leiocassis ussuriensis and the morphological development of its larvae and juveniles and to use the results as basic information for the preservation of species and resource enhancement. For artificial egg collection, human chorionic gonadotropin (HCG) was injected at a rate of 10 IU per gram of fish weight. During breeding period, water temperature maintained at $24.5{\sim}26.5^{\circ}C$ (mean $25.0{\pm}0.05^{\circ}C$). The process of ovogenesis reached the two-cell stage in 50 minutes after fertilization. In 73 hours of fertilization the movement of the embryoid body became active state and the larvae began to hatch from the tail through the oolemma. Length of prelarvae were 6.33~6.50 mm long (mean $6.40{\pm}0.06mm$) just after hatching having yolk with their mouth not opened. After thirty eight days of hatching, juveniles were 30.6~32.5 mm long (mean $31.5{\pm}0.65mm$). The color was dark yellowish brown throughout the entire body, and the number of caudal fin rays developed to thirty six perfectly.

• 한국발생생물학회지:발생과생식
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• 제18권4호
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• pp.311-319
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• 2014

Newly hatched black porgy larvae (Acanthopagrus schlegeli) swam to the surface, with the mouth and anus still closed and were 1.90-2.11 mm (mean, 2.0 mm) in total length (TL). The larvae were 2.71-2.94 mm TL (mean, 2.82 mm) on day 2 after hatching. At this time, about two-thirds of the yolk was absorbed, the bladder and intestines had formed, and the mouth and anus were open. Total length was 4.32-4.66 mm (mean, 4.45 mm) at the post-larval stage on days 5-6 after hatching, and the yolk and oil globule were almost absorbed. The end of the notochord began to flex, and 6-8 caudal fin rays were visible. The larvae were 15.37-16.1 mm TL (mean, 15.83 mm) at the juvenile stage on days 30-32 after hatching, and the number of rays in all fins was completely revealed.

• Animal cells and systems
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• 제1권4호
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• pp.529-534
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• 1997

Genetic and morphological variations of Rhinogobius giurinus were surveyed. Populations of R.giurinus were clearly divided into two forms (Form-A and Form-B). Starch gel variation of this species. Three loci (Aco, Mpi, aGpd) out of 27 showed fixed allelic differences between Form-A and Form-B and they are well differentiated from each other genetically (Rogers' S=0.871). These two forms, moreover, are found to be allopatric in distribution and morphologi cally different in body length and caudal fin color pattern. Therefore, they are considered as two distinct taxa of subspecific rank. In addition, the genetic relationships among 5 taxa within 4 species of the genus Rhinogobius were investigated. Three species of the Rhinogobius brunneus complex (R.sp. OR, R. sp. CB and R. sp. CO) are well differentiated from each other genetically and two taxa of R. giurinus are genetically divergent from three species of the Rhinosotius brunneus complex (average Nei's D=0.603, average Rogers'=0.534).

• Environmental Analysis Health and Toxicology
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• 제12권3_4호
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• pp.55-59
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• 1997

Furfural, an organic solvent, is widely used as synthetic component material in producing chemical products. However, furfural has been reported that it shows strong toxicities to human being showing intense stimulus to skin, eyes, mucous membrane and nerve system. It is also known to cause anemia, liver cirrhosis, kidney failure and genetic toxicity in the human being working in the exposed area. LD$_{50}$ of furfural for peritoneal injected mouse has been known around 20mg/kg, but the acute toxicity on aquatic organisms such as fish, daphnid or algae are not well known, compared to those on rodents. In this experiment, we studied on the fish toxicity of furfural using Japanese Medaka (Orvzias latipes) and Common Carp (Cvprinus carpio). We also observed histological changes in the fish organs. The LC$_{50}$ were 12. Smg/L in Japanese Medaka and 21.8 mg/L in Common Carp, respectively. When Common Carps were exposed to 120mg/L of furfural concentration for 30 minutes, blood congestion in gills and lysis of secondary lamella were shown. Though the muscle of caudal fin was not completely eroded, its epidermic cells were shown to be necrotic in various parts. Tissue atrophy and cell necrosis were also shown in the liver of Common Carps exposed to furfural. From these results, furfural seems to cause histological damages on liver, an internal organ as well as on external organs such as gills and fins eventhough the fish were exposed for a short-term.

• 한국어류학회지
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• 제12권2호
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• pp.124-128
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• 2000

푸렁통구멍 자치어 시료는 1997~1999년 제주도 연안에서 봉고네트와 트롤형자치어네트로 총 45개체 채집되었으며, 체장 범위는 2.7~8.7 mm였다. 이 종은 제주도 연안과 대한해협에 분포하였다. 성장에 따른 푸렁통구멍 자치어의 체형변화는 다음과 같다. 1) 지느러미의 여린줄기는 체장이 약 5 mm부터 나타나기 시작하며 체장이 약 8.7 mm에서 정수에 달하였다. 2) 흑색 소포의 변화는 체장 3 mm 전 후에서 급격하게 일어났다. 3) 미부봉상골 위아래에 일렬로 된 혹색소포는 체장 4.3 mm 이하의 크기에서 나타났다. 4) 꼬리자루에 흑색소포는 체장 6 mm부터 나타나기 시작하였다.

• 한국어류학회지
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• 제9권1호
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• pp.1-4
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• 1997

1994년(年) 8월(月) 전북(全北) 부안군(扶安郡) 격포(格浦) 앞 바다에서 채집한 어류 중에서 체장(體長) 308.3~345.8 mm 되는 표본(標本) 3 개체(個體)를 수집(收集)하여 조사(調査)한 결과(結果) 지금까지 우리 나라에서는 서식(棲息)이 보고(報告)되지 않은 Chanos chanos(Forssk$\aa$l)로 동정되었다. 본종(本種)은 등지느러미와 꼬리지느러미의 형태(形態), 입의 모양, 등지느러미와 뒷지느러미 기부에 얇은 막의 존재 등(等)에서 독특한 특징을 나타내고 있어 다른 종(種)과 잘 구분(區分)된다. 본종(本種)의 한국명(韓國名)은 갯농어아목(亞目) (Chanoidei), 갯농어과(科) (Chanidae), 갯농어속(屬) (Chanos), 갯농어 (C. chanos) 라고 명명(命名)하였다.

• 한국어류학회지
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• 제20권1호
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• pp.66-69
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• 2008

농어목 양쥐돔과(Acanthuridae)에 속하는 Naso hexacanthus 1개체(표준체장 351.1 mm)가 제주 북부연안에서 정치망으로 처음 채집되었다. 이 종은 등지느러미에 갈색 수직 무늬가 있고 미병부에 있는 두개의 골질판은 연한 보라색을 띠는 것이 특징이며, 이 종의 한국명을 "남방표문쥐치"라고 하였다.

• 한국어류학회지
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• 제32권4호
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• pp.245-250
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• 2020

가자미목 가자미과에 속하는 Atheresthes evermanni 2개체(표준체장 407~438 mm)가 동해 중부 고성군 연안에서 자망으로 채집되었다. 본 개체는 입이 크고 양안간격이 좁으며, 무안측에서 눈이 보이지 않고 새파는 가늘고 길며, 꼬리지느러미는 만입형이고 측선은 거의 직선인 특징을 가지고 있다. 우리나라 해역에서 A. evermanni는 처음 기록되고, 본 종을 우리나라 어류상에 포함시키며 새로운 속명과 국명으로 각각 '화살치가자미속' 및 '화살치가자미'를 제안한다.

• 한국발생생물학회지:발생과생식
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• 제25권1호
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• pp.33-41
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• 2021

This study was carried out to observe the development of the autonomous skeletal development of the Favonigobius gymnauchen. Total length (TL) of larvae 3 days after hatching (DAH) were mean TL of 3.34 mm, with a line-shaped parasphenoid ossification in the cranium and basioccipital ossification in the back. The 10 DAH larvae had a mean TL of 5.20 mm, with the number of caudal vertebrae increasing to 15. The urostyle and two hypural bones in the lower part also began to ossify. The 23 DAH juveniles had a mean TL of 8.47 mm. The pectoral girdle's skeleton was completed as the scapula and coracoid were ossified. The pelvic girdle also fully supported the ventral fin as its ossification was completed. Favonigobius gymnauchen and Tridentiger obscurus showed similar characteristics in terms of the anus location of hatched larvae, number of myotomes, and melanophore distribution during the morphological development of the larvae and juveniles. However, this study confirmed differences in the development of the vertebrae and urostyle bone.