• 수산경영론집
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• 제52권3호
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• pp.39-55
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• 2021

The purpose of this paper is to confirm the trend of inland water fish farming in North Korea and to suggest a plan for inter-Korean cooperation. North Korea's inland water fish farming laid the foundation for production in the 1950s and 1960s, and production facilities were expanded until 1980. In the midst of the severe economic crisis in the 1990s, North Korea paid attention to inland water fish farming as an alternative to food production. The military took the lead in expanding the aquaculture industry and catfish farming was encouraged. In the Kim Jong-un era, North Korea's inland fish farming continues the tradition of catfish farming and promotes a policy of expanding inland cage farming. This study comprehensively reviewed recent inter-Korean relations, North Korea's food crisis and acceptability, and UN sanctions. As a result, inland water fish farming is the most promising field for inter-Korean cooperation in the field of fisheries. In the initial stage of inter-Korean cooperation in the field of inland water fish farming, humanitarian aid projects such as feed and seed support can be promoted. In the stage of expanding inter-Korean cooperation, knowledge sharing program and materials and facilities support projects can be promoted. Development cooperation and direct private investment are possible at the full-scale stage.

• 한국동물위생학회지
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• 제20권3호
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• pp.307-312
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• 1997

To investigate the species and infection rate of Tripartiella sp in three species of freshwater fish, carp(Cyprinus carpio), goldfish(Crassius auratus) and Korean catfish(Parasilurus asotus), fish cultured in the fish farms next to Yosu and in the western area of Chunbuk province in Korea was examined from April to June, 1996. The infection rate was evaluated after observing the gill and mucous from 130 fish under the microscope. The species of Tripartiella was identified on the basis of the shape and number of denticle according to methods of Bychowsky(1985) after staining the parasites with 2% methyene blue solution. All the detected-parasite was classified as Tripartiella differed from Trichodina reported previously in our country. T carassii, T californica, T rhombi from Goldfish, T rhombi from common carp, T californica from Israeli carp and T bychowsky from Korean catfish were observed. In the fish from the fish farms in the western area of Chunbuk province, the infection rate of Tripartiella sp was ranged from 6.7% to 100%, but in neither carp nor goldfish from the farms next to Yosu the parasite detected.

• 한국환경생물학회:학술대회논문집
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• 한국환경생물학회 2004년도 학술대회
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• pp.106-107
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• 2004

• 한국환경생물학회:학술대회논문집
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• 한국환경생물학회 2004년도 학술대회
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• pp.108-110
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• 2004

• 한국어류학회지
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• 제29권2호
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• pp.89-93
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• 2017

최근 신종으로 발표된 동방자가사리 Liobagrus hyeongsanensis의 핵형 분석을 위해 경상북도 경주시 양북면 일대에서 암컷 10마리와 수컷 5마리를 채집하였다. 동방자가사리의 염색체 수는 2n=42이었으며, 핵형은 30개의 중부염색체와 12개의 차중부염색체로 구성되어 있었다. FN 값은 84였으며, 암수 간 성적이형과 배수체는 관찰되지 않았다. 동방자가사리는 퉁가리속의 자가사리, 섬진자가사리와 염색체 수는 같았으나 핵형에서 차이를 보였다. 이러한 핵형의 차이는 지리적 격리로 인한 로버트슨 전좌(Robertsonian rearrangement)와 관련 있는 것으로 생각된다.

• 한국수산과학회지
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• 제14권1호
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• pp.32-36
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• 1981

1979년 8월 태국에서 Clarias batrachus 자어 100미를 도입하여 그 중 10미를 제주대학양식학과양어실험실에서 친어까지 사육하였다. 성장은 자어에서 29일후 체장 5cm 전후 체중 1.43g으로 성장하였고, 260일후에는 약 206g으로 성장하였다. 1980년 10월 11일 3미의 암컷에 Chorionic gona-dotrophin $1\sim2\;IU$ 씩 주사하여, 그 중 1미가 10월14일에 산난하여 약 1,500개의 수정난을 얻었고 22시간 후 완전히 부화하여 그후 먹이를 갈 먹고 자란 건강한 자어 약 1,300미를 얻었다.

• 한국수산과학회지
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• 제40권3호
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• pp.141-146
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• 2007

We investigated the reproductive cycle of the striped eel catfish Plotosus lineatus. Specimens were sampled in the coastal waters of Sungsan and Jocheon, east of Jeju, Korea, from September 2001 to August 2002. The gonadosomatic index (GSI) in females and males were reached a maximum in June $(14.18{\pm}10.38)$ and July $(0.35{\pm}0.12)$, respectively. Based on histological observations and GSI variation, the reproductive cycle was classified into the following successive stages: in females, growing (September-April), mature (April-June), spawning (June-July), and degenerative and recovery (July-September) and in males, growing (August-December), mature (September-May), spent (April-July), and degenerative and recovery (June-August). The total length at 100% maturity exceeded 15 cm and the fecundity ranged from 525 to 1176 eggs. The fecundity was correlated positively with total length and body weight. Histological observations of the gonads suggest that this species is a spring-summer spawner with group-synchronous type oocyte development.

• 한국수산과학회지
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• 제36권5호
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• pp.480-485
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• 2003

Morphology of the spermatozoa from the testes of the catfish (Pseudobagrus brevicorpus) was studied by transmission and scanning electron microscopy. The spermatozoa of P. brevicorpus are approximately $82.25\pm0.06\;{\mu}m$ in length and relatively simple cells composed of a spherical head, a short midpiece and a tail as in most teleost fish, The nucleus measuring about $2.00\pm0.02\;{\mu}m$ in length is depressed with a deep nuclear fossa of about $1.05\pm0.03\;{\mu}m$ in length three fifths of the nuclear length. The nuclear fossa contains the proximal and distal centrioles. The two centrioles are oriented approximately $150^{\circ}$ to each other. The mitochondria are arranged in two layers and their number is 12 or more. They are separated from the axoneme by the cytoplasmic canal. The axoneme is the 9+2 microtubular pattern and has inner but no outer dynein arms as in other bagrids. The axonemal fins were the closed to axonemal doublet 3 and 8. The axonemal fins and lost outer dynein arm are shared in Bagridae and the deep nuclear fossa is shared in Siluriformes. The axonemal fins observed in Bagridae and Amblycipitidae of Siluriformes might be the apomorphic character in Ostariophysi.

• 한국수산과학회지
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• 제38권3호
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• pp.158-163
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• 2005

This paper deals with the histology of the barbels of striped sea catfish, Plotosus lineatus (Thunberg). This fish have eight noticeable barbels of two pairs on their maxillary and mandibular. Each barbel is composed of an epidermis, dermis and a central rod of cartilage. The epidermis in the middle part of the maxillary barbel is thicker than those on other parts, and formed of stratified epithelium which contains many cutaneous taste buds and a few small club cells. Number of taste buds increase on the middle and posterior part of each barbel. The dermis consists of loose connective tissue fibers which encloses blood vessels and bundles of nerve fibers. The barbels of this fish can be categorized into stiff and flexible types and are accessory, feeding and sensory structures. Thus we substantiate that they are gustatory receptor organs for this fish.

• 한국어병학회지
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• 제13권2호
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• pp.75-86
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• 2000

1998년 3월부터 2000년 4월까지 전라남 북도 및 충청남도 일원의 내수면 양식장에서 사육중인 뱀장어(Anguilla japonica)와 메기(Parasilurus asotus)를 무작위로 채집하여 아가미에서 국내 미기록종인 4종의 단생흡충류를 검출하였다. 검출된 단생흡충류는 모두 아가미 흡충으로서 뱀장어에서는 Pseudodactylogyrus bini(KIKUCHI, 1929), P. anguillae(YIN & SPROSTON, 1948), 메기에서 Ancylodiscoides infundibulovagina(YAMAGUTI,1941) 및 Ancylodiscoides sp.가 검출되었다.