• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2002.10a
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• pp.49-50
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• 2002

최근 국제해양법의 발효와 더불어 배타적 경제수역의 설정으로 날로 황폐화해져 가는 연안어장을 살리고 어장 생산성을 높여 나가는 연안 자원관리의 중요성이 대두되고 있다. 연안 어족자원관리를 위해서는 바다목장 조성을 통한 길러서 잡는 어업의 실현이 요구된다. 어류가 들을 수 있는 수중가청음은 어군의 행동을 제어하는 방법과 바다목장에서 음향순치 기술로 많이 응용되고 있다. 수중가청음에 의한 어류의 반응을 해석 하기 위해서는 물고기의 청각능력을 정확히 파악해야 한다(상성 1991). (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.81-82
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• 2001

최근 세계는 각종 어로기기 및 어구어법 기술의 발달로 인한 자원남획에 대한 우려로 자원관리형 어업에 대해 새로운 인식을 하게 되었고, 남획문제를 해결하기 위한 다각도의 노력을 기울이고 있다. 그러나 우리 나라 연근해에서 조업하고 있는 대표적인 어업인 트롤어업은 타 어구에 비하여 어획성능이 매우 우수하여 자원남획의 소지가 많고, 다이아몬드형 망지의 구조적 특성으로 인해 소형어류의 탈출이 어렵고, 탈출한 어류도 탈출시의 어체손상으로 생존율이 극히 저조할 것으로 추정되어 자원관리의 주 대상 어업으로 등장하고 있는 실정이다. (중략)

• 건강소식
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• v.15 no.1 s.146
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• pp.28-30
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• 1991

• 건강소식
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• v.18 no.4 s.185
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• pp.52-55
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• 1994

• Journal of the korean veterinary medical association
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• v.23 no.2
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• pp.89-93
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• 1987

• Journal of Marine Life Science
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• v.7 no.1
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• pp.10-14
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• 2022

Monitoring infectious diseases for fishery species takes a key role in preventing disease emergence and spreading of cultured fishery species. This research has examined a total of 1,115 fishes of four species (leather carp, fancy carp, stone moroko, carassius auratus) at 23 farm in Jeollanamdo and Jeollabukdo in 2021 for pathogen infection. As a result of disease screening for three legally designated diseases (SVC, Spring viraemia of carp, EUS, Epizootic ulcerative syndrome, and KHVD, Koi herpesvirus disease), no infectious diseases were detected in all examined samples; cyprinid fish studied in Jeolla province would provide important information for declaring a disease-free nation or disease-free region.

• Korean Journal of Ecology and Environment
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• v.55 no.1
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• pp.49-59
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• 2022

Total of 325 estuaries in Korea were surveyed to analyze the effect of presence of sluice gate on the estuary environment and fish community from 2016 to 2018. Fish community in closed and open estuaries showed differences generally, and the relative abundance (RA) of primary freshwater species in the closed and migratory species in the open estuaries were high. The result of classifying species by habitat characteristics in closed and open estuaries showed similar tendencies at the estuaries of south sea and west sea. The relative abundances of primary freshwater species in the closed estuaries at the estuaries of south sea and west sea were the highest, but estuarine and migratory species were high in both closed and open estuaries at the estuaries of east sea. Primary freshwater species showed higher abundances in the closed estuaries with reduced salinity due to blocking of seawater since they are not resistant to salt. However, primary freshwater species in open estuaries at east sea was higher than that of the closed estuaries, which is considered to be the result of reflecting the characteristics (tide, sand bar, etc.) of the east sea. Korea Estuary Fish Assessment Index (KEFAI) was showed to be higher at open estuaries than closed in all sea areas (T-test, P<0.001), the highest KEFAI was observed in closed estuaries at south sea, and open estuaries in east sea. Fish community of closed and open estuaries in each sea areas showed statistically significant differences (PERMANOVA, East, Pseudo-F=3.0198, P=0.002; South, Pseudo-F=22.00, P=0.001; West, Pseudo-F=14.067, P=0.001). Fish assemblage similarity by sea areas showed a significant differences on fish community in closed and open estuaries at east sea, south sea, and west sea (SIMPER, Group dissimilarity, 85.85%, 88.36%, and 88.05%). This study provided information on the characteristics and distribution of fish community according to the types of estuaries. The results of this study can be used as a reference for establishing appropriate management plans according to the sea areas and type in the management and restoration of estuaries for future.

• 건강소식
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• v.11 no.1 s.98
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• pp.38-41
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• 1987

겨울철에도 요충, 개회충, 고양이 회충, 아니사키스, 광절열두조충 등 많은 기생충에 의한 감염 가능성이 있으므로 용변후, 식사 전에 반드시 손을 씻고 어류는 충분히 익혀먹는 등 예방에 신경을 써야 한다.

• Korean Journal of Ecology and Environment
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• v.53 no.3
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• pp.241-254
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• 2020

Three introduced fish species, Japanese white crucian carp (Carassius cuvieri Temminck and Schlegel, 1846), bass (Micropterus salmoides Lacepède, 1802) and bluegill (Lepomis macrochirus Rafinesque, 1819), are dominant fishes in Korean freshwater ecosystem. In this study, we analyzed habitat environment conditions of these three species and their impacts to fish communities in streams across South Korea. Fish community data were obtained from the database of the Stream/River Ecosystem Survey and Health Assessment program maintained by the Ministry of Environment and the National Institute of Environmental Research, Korea. Our results showed that species richness and Shannon diversity of fish were higher at the presence sites of introduced fish than at the absence sites. However, when the abundance of these introduced fish species was increased, the species richness and abundance of fish were decreased. An association analysis showed that the introduced fish species had a low similarity in their appearance with some indigenous fishes such as Siniperca scherzeri and Channa argus and some endemic fishes of Korea such as Zacco koreanus, Sarcocheilichthys variegatus wakiyae, and Acheilognathus yamatsutae. In addition, the introduced fish species had a low appearance similarity with a large number of fishes in their association networks. Finally, our results presented that these introduced fish species influenced the negative impacts to the stream fish communities, and they were potential risk factors for fish community in Korean freshwater ecosystem. Therefore, it is necessary that continuous monitoring and establishment of management strategy for introduced fish species to preserve fish resource and biodiversity in the Korean streams.

• 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.