• 수산해양기술연구
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• 제58권4호
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• pp.317-325
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• 2022

Korean tuna purse seine fishery in the Western and Central Pacific Ocean (WCPO) began to operate in earnest in the early 1980s. Since then, the total catch has shown an increasing trend and the target species are skipjack tuna (Katsuwonus pelamis), yellowfin tuna (Thunnus albacare) and bigeye tuna (Thunnus obesus). Based on the operational data of Korean tuna purse seine fishery from 2016 to 2020, the catch rates of target species (skipjack and yellowfin tunas) were analyzed by operation time for set types (free school and FAD sets). In the case of the free school sets, they were usually made from sunrise to sunset, and the catch rate was high before and after sunrise for skipjack tuna and before sunset for yellowfin tuna. On the other hand, for the FAD sets, more than 90% of them were made just before sunrise, and there were few operations during the daytime. The purpose of this study is to examine whether there are differences in the catch rate of skipjack and yellowfin tunas by operation time and by school type for Korean tuna purse seine fishery in the WCPO, which could be helpful in understanding its fishing characteristics and providing useful information for developing the stock indices of the target species.

• 한국수산과학회지
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• 제52권5호
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• pp.524-533
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• 2019

Sea urchins are hugely destructive of marine forest ecosystems. This study aimed to determine the behavioral response of purple sea Urchins Heliocodaris crassispina to food and an electrical stimulus and to investigate the attraction radius of these stimuli, with an eye to the development of technology for controlling sea urchin numbers. Ten purple sea urchins, housed in circular acrylic tank, were tested against various attractant stimuli. In addition, an experiment was conducted with 200 purple sea urchins in a large water tank to observe movement patterns and the attractiveness of various stimuli. In the smaller experiment, eight out of 10 sea urchins were attracted to food, and these attractive effects were maintained in all except one of the affected urchins. However, the attractant effects of the electrical stimulus were maintained in only three sea urchins. The results of the larger experiment indicated that differences in the attractant power of food and an electrical stimulus were 54%-78%, and approximately 5-15% of sea urchins were attracted by the electrical stimulus.

• 한국수산과학회지
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• 제55권6호
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• pp.927-937
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• 2022

The reproductive characteristics of Pacific anchovy, Engraulis japonicus were investigated using samples randomly collected from the southern waters of Korea between January and December 2021. We analyzed monthly changes in maturity stages, gonadosomatic index (GSI), egg diameter, fecundity, and fork length (FL) at sexual groups maturity of 50%, 75% and 97.5%, and sex ratio (female:male). GSI value showed two peaks in May and August; however, microscopic analysis of E. japonicus gonad tissue revealed that the spawning period was from March to October. The main spawning seasons for the entire populations were from April to June and August to September. The overall sex ratio was female-biased (1 females, 0.89 male). The fecundity (F) of female anchovies ranged from 429 eggs at an FL of 8.0 cm to 13,824 eggs at an FL of 14.9 cm and the relationship between FL and F was 0.0788FL^4.422. The FL at 50% group maturity was 8.26 cm for female anchovies. Based on the results, we suggest that the reproductive cycle in Pacific anchovies may be related to pulses in water temperature and the sexual cycle of the fish.

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2000년도 춘계수산관련학회 공동학술대회발표요지집
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• pp.516-517
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• 2000

키조개, Atrina pectinata는 키조개과 (Pinnidea)에 속하는 우리 나라 산 이매패류 중에서 가장 큰 종으로 주로 남, 서해안에서 대량 생산되고 있다. 특히, 본 종은 후폐각근인 패주가 고급식품으로서 최근 각광을 받고 있을 뿐만 아니라, 수출품종의 하나로 외화획득에 기여하며 어업인들의 큰 소득원이 되고 있는 중요한 수산자원의 하나이다. 지금까지 본 종의 생식에 관한 연구 보고로는 일본산 키조개의 번식생태(길전, 정상, 1954)와 우리 나라 남해산 키조개의 번식상태(류와 유, 1984; 류 등,1988)에 관한 연구가 보고되고 있으나 서해산 키조개의 번식생태에 관한 보고는 찾아볼 수 없었다. 따라서 본 연구의 목적은 서해산 키조개의 생식주기와 난소발달 단계에 따른 후폐각근과 내장낭 부위의 생화학적 조성 변화를 조사하여 생식 mechanism을 추구하는 동시에 본 종의 자원관리를 위한 기초자료를 제공하고자 본 연구를 수행하였다. (중략)

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2001년도 춘계 수산관련학회 공동학술대회발표요지집
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• pp.178-179
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• 2001

굴은 년간 생산량이 20만톤 전후로 전체 패류 생산의 약52％ 이상 점유하고 양식생산 비증서 90％를 상회함으로서 어업생산 및 어가 소득, 농어촌 지역의 고용 창출 효과 측면 외에도 남해안수산업 발전의 상징적 의미까지 내포한 중요한 수산자원이다. 굴 가공의 년간 생산량은 13,000톤 전후로 통조림과 냉동품의 생산 비중이 전체 굴가공품의 90％ 이상을 점하며 가공품의 대부분이 수출되고 있으나 1990년대 중반부터 중국, 호주, 등 후발 개도국 및 자원부국과의 수출경쟁 심화로 새로운 기술 개발이 없을 경우 한국산 굴제품의 국제적 경쟁력 저하가 예상되는 등 지속적 수출시장 확보 노력이 필요한 상품이다. (중략)

• 한국수산과학회지
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• 제55권1호
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• pp.51-60
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• 2022

In Korea, the volume of imported fish for human consumption has been dramatically increasing every year. However, many Koreans are unable to distinguish imported fish from our domestic species. To reduce confusion and minimize the negative impacts on consumers, we reviewed the names of 100 imported fish species. We suggest new Korean names for 22 imported fish species. We also suggest altering the Korean names for three imported fish species. Finally, we suggest four novel ways to ensure the systematic and effective management of imported fish species.

• 한국정보통신학회논문지
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• 제3권4호
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• pp.695-704
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• 1999

세계 각국들이 수산자원 확보를 위해 경제수역을 선포하고 있으며, 우리나라의 경우 이미 선포된 한ㆍ일 어업 협정에서의 협상문제, 앞으로 진행될 한ㆍ중 어업 협상의 난항 등 여러 가지 문제로 수산정책의 변화가 전망된다. 연구는 새로운 수산정책을 모색하기 위하여 현재의 문제점을 체계적으로 분석하고 미래에 적합한 수산정책을 제시하였다. 수산정책의 발전방향은 해양수산부로 수산정책의 일원화, 수산관련 기관간의 상호 유대관계 강화, 수산관련제도 정책의 완화, 연근해 어업의 생산성 복원, 기르는 어업 생산 구조로 변화, 어촌 정주생활권 개발, 수산업 소비구조의 개선, 해외어장의 안정성 확보 등의 정책을 수립하여 미래 수산강국으로써 변모를 가질 수 있는 방안을 제시하였다.

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2003년도 춘계 수산관련학회 공동학술대회발표요지집
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• pp.363-365
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• 2003

개조개(Saxidomu purpuratus)는 우리나라 전 연안에 분포하고 있으며, 연평균 생산량은 약 약 7,300들 정도가 어획되어지며, 경남 남해안 생산량이 전국 생산량의 약 73% 이상을 차지하고 있다. 본 종은 2001년부터 TAC 실시 대상 어종으로 선정되어 자원이 관리되어지는 실정에 있다. 따라서 개조개 자원을 보다 더 합리적으로 관리하기 위해서는 이 자원에 대한 자원생물학적 특성치인 자연사망계수, 어획사망계수, 생잔율, 어획개시연령 정확한 정보가 있어야만 효율적이고 종합적인 관리 발안을 수립할 수 있을 것이다. (중략)

• 수산해양기술연구
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• 제55권3호
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• pp.217-232
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• 2019

It was turned out by shrimp beam trawl monthly survey from March, 2015 to February, 2016 that different species composition and abundance of the fish assemblages in Sacheon Bay and coastal waters off Namhae, Korea were compared. As a result of monthly measured sea temperature and salinity of Sacheon Bay and coastal waters off Namhae, sea temperature of both areas was changed seasonally; however, differences in sea temperature occurred during certain periods depending on the region. Salinity was generally low in Sacheon Bay affected by fresh water, and both areas was low in summer and high in winter. A total of 73 species representing 37 families were collected in Sacheon Bay. The dominant fish species in terms of numbers and biomass were Liparis tanakae, $23,077inds./km^2$, $332.1kg/km^2$. A total of 91 fish species representing 49 families were collected in coastal waters off Namhae. The dominant fish species in terms of numbers were Leiognathus nuchalis, $139,683inds./km^2$ and biomass were Chelidonichthys spinosus, $1,078.6kg/km^2$. Analysis of dendrogram of the clustering showed that Sacheon Bay and coastal waters off Namhae were distinctive featured (global R = 0.691, p = 0.017). And except of summer season (July-October), there was a distinctive feature seasonally (global R = 0.844, p = 0.001). The fish species that appeared in common in both areas, where fish species caught in Sacheon Bay, an important inner bay,were smaller than those caught in coastal waters off Namhae appeared. It presented that Sacheon Bay plays a more important role in spawning and nursery ground for fisheries resource than coastal waters off Namhae, Korea.

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2005년도 춘계 학술대회 논문집
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• pp.37-41
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• 2005