• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.10a
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• pp.103-104
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• 2001

1997년도 우리나라 굴 총생산량은 약 20만여톤으로 일반 패류 생산량의 절반 이상을 차지하고 있으며, 대부분이 양식에 의존하고 있다. 양식산굴은 대략11월부터 출하하기 시작하여 3월까지는 주로 생식용으로, 산란기로 접어드는 4월부터 6월까지는 주로 통조림용으로 이용되고 있다. 통조림의 제조를 위한 원료 굴은 델 등의 제거를 목적으로 수세하고, 레토르트에서 자숙 및 탈각한 후 이물질 등을 제거하기 위하여 탈각 굴에 대하여 수세 및 탈수와 같은 전처리 공정을 거치게 된다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.124-125
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• 2001

1997년도 우리나라 굴 총생산량은 약 20만여톤으로 일반 패류 생산량의 절반 이상을 차지하고 있으며, 대부분이 양식에 의존하고 있다(Korean Fisheries Association, 1998). 양식산 굴은 대략 11월부터 출하하기 시작하여 3월까지는 주로 생식용으로, 산란기로 접어드는 4월부터 6월까지는 주로 통조림용으로 이용되고 있다. 통조림의 제조를 위한 원료 굴은 뻘 등의 제거를 목적으로 수세하고, 레토르트에서 자숙 및 탈각한 후 이물질 등을 제거하기 위하여 탈각 굴에 대하여 수세 및 탈수와 같은 전처리 공정을 거치고, 이 때 부산물로 자숙수와 세척수가 발생한다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.404-405
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• 2001

홍합목 키조개과의 이매패에 속하는 키조개(Atrina pectinata)는 주로 수심 5m 이상의 깊은 펄 바닥에 무리를 지어 서식하고 우리나라에서는 남해안의 보성만 광양만, 가막만 여자만과 서해안의 위도근해, 충남연안 인천의 선갑도 근해 둥에서 많이 서식하며, 주 분포지역은 충남 인근해역이다. 이와 관련하여 우리나라 연안에서 키조개 자원의 생산은 일반해면어업에서의 키조개 총 생산량 가운데 64％ 이상이 충남 연안해에 집중되어 있다. (중략)

• Journal of Marine Life Science
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• v.3 no.1
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• pp.22-30
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• 2018

In this study, pilot study on the introduction of stationary fishery was performed to solve the problem of fisheries resource reduction. The Fyke net, which is a test fishing net was selected considering the environment, operation and management costs of Ulleungdo, conditions that can be operated by small fishing vessels and personnel. As a result of 11 times survey using Fyke net from April to May 2017, 2,735 individuals and 983.4 kg caught and the dominant species were red seabream, yellowtail, olive flounder, mitra squid, horse mackerel, filefish, etc. In conclusion, if the production of squid, which is one of the major fisheries resources of Ulleungdo, is continuously decreased, it is considered that introduction of small-scale stationary fishery such as Fyke net would be useful as a means replace income of fishermen.

• Journal of Korean Port Research
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• v.13 no.2
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• pp.233-244
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• 1999

The world views the sea newly for the supplementation of the limited land resources and extension of the national territory especially the sea is changing from the period of the free availability to that of the sea control y the coastal nations in step with the announcement of the marine laws in November 16.1994. Therefore Korea is changing strang fisheries nation the fact is that korea cannot effectively cope with changing fisheries situation and various fisheries difficulties because the fisheries policy system is dispersed to each parts of the government. Therefore I tried to present a theoretical basis by studying in the fisheries administration organization. The vision of Ministry of Maritime Affairs and Fisheries is as follow: a coastal fishery must be able to reproduction change of fishery structure must be able to raising fishery consumption of fishery must be able to improvement live of fishing village must be able to betterment overseas fishing grounds must have to security. The results of this study is as follow: fisheries administration organization must be reform of organization for changing under the all situation fisheries administration organization must be reform of entrepreneurial organization fisheries administration organization must be reform of customer driven organization fisheries administration organization must be reform of competitive organization.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.22 no.4
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• pp.196-200
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• 1989

Fishery production of topshell in Cheju-do has been rapidly decreased in the last few years. To investigate the origin of this problem and estimate maximum sustainable yield (MSY) and catch per unit effort (CPUE) of topshell in Cheju-do, a survey has been done ysing the statistical data for 19 years (1968-1986) of topshell production in Cheju-do and data for 3 yea.5 (1984-1986) from an fishery village, Tonggui-ri, Pukcheju-gun, Cheju-do. Maximum sustainable yield of topshell in Cheju-do assumed to be 2,500-2,800 metric tons(M/T) per year. The annual fishery productions of topshell from 1982 to 1986 were 3,368, 3,649, 3,308, 3,136, and 1,400 M/T, respectively. These results show that topshell had been over-fished during 1982 to 1985. Because of the over-fishing, production sharply decreased down to 1,400 M/T in 1986. Total annual production of topshell in Tonggui-ri is a little less than one Percent of that of Cheju-do. To achieve this production, over the half of resistered diving women in this village have been worked. To estimate catch per unit effort of topshell in Cheju-do, it seems better to use the data which is the number of diving women who have been worked for certain period of time than the number of working days in the same period of time.

• Journal of Internet Computing and Services
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• v.25 no.1
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• pp.17-27
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• 2024

Overfishing, climate change, and competitive fishing have led to a continuous decline in fishery production. To address these issues, the Total Allowable Catch (TAC) system has been established, which sets annual catch quotas for individual fish species and allows fishing only within those limits. As part of the TAC system, land-based investigators measure the length and height of fish species at auction markets to calculate the weight and TAC depletion. However, the accuracy of the acquired data varies depending on the skill level of the land-based investigators, and the labor-intensive nature of the work makes it unsustainable. To address these issues, this paper proposes a fish species recognition and length measurement system that automatically measures the length, height, and weight of eight TAC-managed fish species using the camera of a smart pad that can measure the distance to the water surface. This system can help to automate the current labor-intensive work, minimize data loss, and facilitate the establishment of the TAC system.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.10a
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• pp.229-232
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• 2022

Recently, production of offshore fisheries in Korea has been decreasing. Since production of offshore fisheries in 2016 fell below 1 million tons for the first time in 44 years, it has not recovered and has been decreasing. In order to cope with such a decrease in fishery resources, the TAC (total allowable catch) system is implemented internationally for fisheries resource management. Since 1999, South Korea has introduced the TAC system to perform resource management. In this paper, we propose an artificial intelligence-based fish classification and weight estimation system that can be used to investigate fishery resources of land observers essential for the implementation of the TAC system. The system consists of an app and a cloud server that automatically measures the body size and height of fish and takes photos using a terminal equipped with a lidar sensor. In the cloud server, fish classification is performed using a CNN-based efficientnet model and the weight of fish is predicted using automatically measured body length and body height information. Using this system, it is possible to improve the existing method in which the land observer manually writes after measuring the tape measure and weight in the stomach market.

• The Korean Journal of Malacology
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• v.28 no.2
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• pp.101-108
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• 2012

Bivalves collected by a dredge in Yeongil Bay of Gyeongsangbuk-Do Province, Korea in May, 2010 and August, 2010 were 2 species including Dostinorbis japonicus and Scapharca broughtonii. The total abundance of bivalves were 1,703 inds. and 140.9 kg. Among them, the abundance of D. japonicus were 1,198 inds. and 76.1 kg. And the abundance of S. broughtonii were 505 inds. and 64.8 kg. The shell length by bivalves species were 25.76-67.88 mm (mean, 58.08 mm) in D. japonicus and 46.82-113.74 mm (mean, 76.86 mm) in S. broughtonii consisting mainly of recruitment group. By regional abundance comparison, the bivalves abundance collected in the outside harbor was 1,332 inds. and 105.4 kg, which was much more than that of the inside harbor indicating 371 inds. and 35.5 kg. In terms of size, the bivalves collected in the outside harbor were 49.49-67.88 mm (mean, 58.47 mm) in D. japonicus and 48.21-113.74 mm (mean, 77.48 mm) in S. broughtonii, which were larger than those of the inside harbor. The yearly biomass of the main commercial target species, S. broughtonii by swept area method (SAM) was estimated up to 242.1 tons. However, considering the regional differences of bivalves between the inside harbor and the outside harbor by abundance and size comparison, it might have been overfished to bivalves in the inside harbor.

• The Korean Journal of Malacology
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• v.27 no.2
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• pp.107-114
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• 2011

The manila clam (Ruditapes philippinarum) is mainly distributed in the coastal area which consist of mud, sand and gravel, but they rarely live on the upper and down reaches of river. For a long time the manila clam has been inhabited in Taehwa river which has been exploited as a traditional earning resources and has become as a major object by neighborhood fishermen. This study was undertaken to evaluate stock assessment and to build management implications with the ecological parameters in Taehwa river from June 2009 to June 2010. The maximum age of manila clam was determined to 6 years old from observing ring radius of shell, the length and weight relationship was TW = $0.0002SL^{3.063}$ ($R^2$ = 0.925). K and $L_{\infty}$ were respectively estimated 46.64 mm and 0.341/year by von Bertalanffy growth. The instantaneous total mortality was estimated to be 1.171/year and the age at first capture was 1.37 years by the Pauly's method using shell length composition. The current total biomass of manila clam was calculated 1,483 mt over study area $1.46\;km^2$ by swept area method. ABC (Acceptable Biological Catch) estimates of manila clam showed 512 mt with using $F_{0.1}$. It's desirable to determine the optimum harvesting time as after main spawning season, as well as it's required to manage fisheries resources considering capture age and biomass through adjusting a first age at capture.