• 한국수산과학회지
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• 제4권1호
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• pp.7-16
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• 1971

1970년 5월, 7월, 12월에 우리나라 동해안에서 어획된 꽁치에 대해서 척추골수, 새파수 및 상대성장을 조사한 결과를 요약하면 다음과 같다. 1. 척추골수는 65개를 mode로 하고 $64\~66$게가 전체의 $90\%$ 내외를 차지하고 있으며, 평균 척추골수는 64.80이다. 새파수는 12월에 있어서 $33\~44$개의 범위에 있으며 평균치는 37.08이다. 2. 중형군($26.0\~28.0cm$대)과 대형군($30.0\~31.0cm$대)으로 구분하여 척추골수라 새파수를 보면 북상기의 중형군은 남하기의 대형군과 그 수가 닮아 있고 남하기의 중형군은 북대기의 대형군과 그 수가 닮아 있다. 3. 척추골수와 새파수와의 사이에는 상관이 보이지 않는다. 그러나, 12월에 있어서 척수골수는 대형군이 중형군보다 많으나 새파수는 중형군이 대형군보다 많다. 4. 체장에 따른 두장비의 변화는 체장의 증가에 따라 감소되는 경향이다. 5. 체장과 두장과의 관계 및 체장과 체중과의 관계는 북상기와 남하기에 따라 그 경향이 다르다. 6. 7월의 중형군에서 12월의 대형군까지의 체중 증가량은 12월의 중형군에서 7월의 대형군까지의 체중 증가량의 약 2배 이상이 될 것이라 추정된다. 7. 체장에 따른 비만도(내장 제외한 체중으로 계산)는 12월에서는 거의 일정하나, 7월의 손 꽁치 어업에서 어획되는 산란중의 군중에서는 중형군과 대형군이 상이하다. 그리고, 12월의 비만도는 7경의 비만도보다 높다.

• 환경생물
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• 제39권3호
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• pp.259-265
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• 2021

국내외에서 80여 종이 넘는 담수 및 해산어류를 감염시켜 대량폐사를 발생시키는 바이러스성 출혈성 패혈증 바이러스(VHSV) 진단검사를 위해 넙치의 여러 조직의 바이러스 발현량에 대한 정량적 데이터를 시간순서에 따라 분석하였다. 무작위 선별된 넙치에 3.0E+07 TCID₅₀ per 0.1mL per fish의 VHSV를 복강 주사하여 시간순서(0시간, 6시간, 12시간, 1일, 2일, 3일, 5일, 7일)에 따라 조직(아가미, 간, 신장, 비장, 근육)을 채취하였다. Real-time PCR 법을 통해 상대 정량한 결과 5일차 아가미, 간, 신장, 비장에서 바이러스의 발현량이 가장 높게 나타났다. 이번 연구를 통해 감염 초기단계에서 비장이 VHSV 확정진단을 위한 적정조직임을 입증하였으며, 국내 법정전염병 진단에 중요한 정보를 제공할 것이다.

• 한국수산과학회지
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• 제47권6호
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• pp.1037-1054
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• 2014

In this study, the status of coastal fisheries was examined based on the catch and number of fishing vessels of coastal fisheries in Korea. Comparing the status on coastal fisheries of the East Sea, Yellow Sea and South Sea in Korea, scientific evidence was made for fisheries management on coastal fisheries based on characteristics of each sea area. From 1990 to 2011, the catch of coastal fisheries in Korean waters ranged from 150,000 mt to 230,000 mt, with an average of 190,000 mt, and it accounted for 15% in average of total catch fished in adjacent waters of Korea. In order of catch by coastal fisheries, gillnet (36.7%) was the primary fishery, followed by coastal complex (24.7%), stow net (18.3%), trap (12.9%), lift net (3.9%), purse seine (3.0%) and beam trawl (0.4%) fisheries. In order of catch by species, anchovy (15.0%) had the largest proportion of total catch, followed by common squid (10.3%), akiami paste shrimp (5.2%), blue crab (3.9%) and octopus (3.7%). Of the average catch by sea area from 1990 to 2011, Yellow Sea, South Sea and East Sea were 37.4%, 34.6% and 28.0%, respectively. Since 2000s, however, the average catch of South Sea has accounted for the largest proportion. The number of permitted fishing vessels involved in 8 coastal fisheries was 55,336 vessels in average from 1997 to 2011. The number of vessels was about 47,000 vessels in 1997, and increased to 61,300 vessels until 2000, then has decreased to 44,000 vessels operating in 2011. In order of the number of permitted fishing vessels by fisheries, complex (52.4%) took the first place, followed by gillnet (31.5%), trap (13.4%), stow net (0.8%), beam trawl (0.8%), purse seine (0.6%), lift net (0.4%) and seine net (0.0%). In order of the number of permitted fishing vessels by sea area, South Sea (29,994 vessels) took the first place, followed by Yellow Sea (18,185 vessels) and East Sea (7,158 vessels). In order of the catch per unit effort (CPUE, mt/vessels) which was analyzed using catch and number of vessels in average by fishery, stow net is the highest followed by lift net, trap, purse seine, gill net, beam trawl and complex fisheries. In particular, the CPUE of complex and gill net fisheries, which accounted for the largest number of vessels were 4.0 mt/vessels and 1.6 mt/vessels, respectively. Since those are too low relative to other fisheries, it was judged to need systematical management on both fisheries.

• 수산해양교육연구
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• 제13권1호
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• pp.87-98
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• 2001

1. The bottom mean size of the research area had been showed 86.8% in, 13.2% in mud artificial sector, but and 82.4% in mud at comparative sector. 2. The water temperature had been showed $11.2{\sim}12^{\circ}C$ in surface, $10.9^{\circ}C$ in mid layer, $10.6{\sim}10.8^{\circ}C$ in lower layer. also, The salinity had been showed $31.85{\sim}31.95_{psu}$ in surface, $31.82{\sim}31.97_{psu}$ in mid layer, $31.85{\sim}31.97_{psu}$ at lower layer. The transparency was showed 3.6~5.6m. 3. The conservation condition of reefs was partially grooved and buried the lower part of reefs established '95~'96years but was good condition generaly. 4. The attached fauna has been appeared fisheres botanical specise 6, fisheries animate species 5. 5. The lure of fisheres has been appeared 17 species in reefs sector, 10 species in comparative sector(natural fishing ground). 6. The catchs of C.P.U.E by fishery was catched 2.2~3.3 times in reefs sector than the natural fishing ground. but the individuals was much catched in traps. The jumbo type reefs gill netter were much catched in square artificial reefs. The weight of fishery was much captured in jumbo type reefs.

• BMB Reports
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• 제38권5호
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• pp.571-576
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• 2005

Cytokines are proteins produced by many different cells of the immune system and play a significant role in initiating and regulating the inflammatory process. In this research, an important cytokine, interleukin-10 (IL-10) gene, has been identified and characterized from zebrafish (Danio rerio) genome database. Zebrafish IL-10 is located within a 2690 bp fragment and contains five exons and four introns, sharing the same organization with mammalian IL-10 genes. An open reading frame of 543 bp was found to encode a putative 180 amino acid protein with a signal peptide of 22 amino acids, which shares 29.7-80.9% homology with amino acid sequences of other known IL-10. The signature motif of IL-10 is also conserved in zebrafish IL-10. The predicted transcript was finally confirmed by sequencing of cDNA clones. Multi-tissue reverse transcriptase PCR (RT-PCR) was performed to examine the tissue distribution and expression regulation of this gene in seven organs of normal and lipopolysaccharide (LPS) stimulation zebrafish. The results demonstrated that this gene was expressed slightly in normal kidney, gill and gut, no expression was detected in other four tissues. The expression was clearly upregulated after LPS stimulation. Using the ideal zebrafish model, further study of IL-10 characterization and function may provide insight on the understanding of the innate immune system.

• 수산해양기술연구
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• 제46권2호
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• pp.103-114
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• 2010

For an effective management of fisheries resources, we need fisheries informations necessary for the establishment of reasonable fishing effort and TAC distribution. To study the present state of by-catch and discard of gill-net fishery in the East Sea, we carried out fishing research using trammel nets in the coastal sea of Susan-port (Yangyang), Jangho-port (Samcheok) and Hupo-port (Uljin). As a result, a total of catch of Susan was 259,172g and that of Hopo was 577,638g. Thus Catch of Susan was 1.49 times more than that of Hupo considering the number of used fishing gear. And catch of Janho was 7.4 times more than that of Susan considering the number of experiment. Two methods of by-catch analysis in this study were used, one method is standardizing of listed species catching possible in fishing license, another method is regarding catch species under 1% of total catch as by-catch. As a result of by-catch analysis of two method, by-catch rate of Susan was 6.55% and 5.87% respectively, that of Hupo was 44.70% and 5.24% and that of Jangho was 0.96% and 2.31%. Discard rate of fish in Susan, Hupo and Jangho were 1.59%, 3.42%, 2.23% respectively.

• 한국수산과학회지
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• 제22권5호
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• pp.241-265
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• 1989

본 연구는 1986년 6월부터 1988년 8월에 걸쳐 충남대천, 인천소래, 경남흥도, 부산공동어시장 및 충남보령군 녹도 등에서 낭장망으로 채집한 병어와 덕대의 표본을 대상으로 난, 자어의 성장에 따른 외부형태, 내부형태 및 미성어와 성어에 대한 형태를 조사한 결과를 요약하면 다음과 같다. 병어와 덕대의 미수정난은 난경이 각각 $0.83\~1.27mm,\;1.05\~1.41mm$로 거의 구형이며 분리부성난이다. 병어 체장 185.0 mm 이상 개체와 덕대 체장 95.5 mm 개체에서 난이 최초로 성숙한다. 자어의 근절은 병어 13+22=35개, 덕대 $14\~15+23=37\~38$개로 성어의 척추골수와 일치한다. 자치어 외부형태 중 두드러진 특징은 가슴지느러미가 덕대에 비해 병어가 크고 덕대의 상악은 하악보다 돌출되어 있다. 덕대의 자어는 체장 $5.60\~7.25mm$에서 흑색소포가 몸의 중앙부 측면, 양택 선단 측면 및 두부에 산재되어 있고, 체장 16.50 mm의 전후의 개체에서 모든 지느러미 유조가 정수에 달하여 치어기로 이행한다. 덕대는 일반적으로 체장 $8.55\~10.00mm$의 개체에서 턱을 구성하는 악골이 최초로 골화하며 척추골의 골화는 두개골 및 내철골보다 빠르며 대체로 두부쪽에서 꼬리방향으로 골화가 진행된다. 병어와 덕대의 외부형태 식별은 턱의 생김새, 지느러미, 극조와 연조수, 협부의 형태 및 두부 후방에 보이는 미세한 파상무늬 등으로 할 수 있으며, 내부형질로는 척추골수, 새파수, 유문수, 식도낭의 형태, 장의 길이 및 상조골수등에 의한다. 병어와 덕대의 요대골은 전단부분이 견대골 쇄골하단에 접착되어 있으며, 미부의 상미축골은 2개이다.

• 한국해양공학회:학술대회논문집
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• 한국해양공학회 2002년도 춘계학술대회 논문집
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• pp.237-242
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• 2002

최근 우리나라 연안어업은 한일, 한중어업협정, WTO 가입 등으로 주변 환경이 급격하게 변화되는 한편, 연근해 어자원의 감소와 근해어업과의 경쟁조업 등으로 인해 경영수지가 극도로 악화되고 있다. 이로 인해 연안어민들의 최소 생계기반 마저 위협받고 있는 실정이다. 이에 본 연구는 연안어업의 수익향상과 자원관리 측면에서 경제성 연안 어선의 선형개발 방안을 검토하였다. 이를 위해 새로운 어선어업 환경에서 요구하는 자원관리, 채산성보장 등의 경제 사회적 요건을 기술적 요소로 변환하여 다목적어선의 개념을 설정하고 관련 기초자료를 마련하였다. 특히, 연안어업을 동해, 서해, 남해, 서남해 등으로 나누어 허가업종의 실태와 어민 요구사항이 서로 다른 점을 감안하여 다목적화 가능 업종을 선정하고, 선형개발 방안을 도출, 정리하였다.

• 한국수산과학회지
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• 제54권3호
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• pp.318-328
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• 2021

We investigated the maturity and spawning of the brown sole Pseudopleuronectes herzensteini, in the coastal waters of the East Sea off Gangwon and Gyeongbuk, South Korea, using samples collected by gill net and longline fishery from January 2018 to December 2019. We analyzed oocyte development, monthly maturity stage, gonadosomatic index (GSI) and total length at maturity. Histological analysis of ovarian development in P. herzensteini revealed that the development was group-synchronous. The spawning peak in Gangwon and Gyeongbuk occurred from April to May and from February to March, respectively. Thus, the spawning season in Gangwon was 1-2 months later than that in Gyeongbuk. The length at 50% maturity for females was estimated as 24.2 cm and 19.0 cm in Gangwon and Gyeongbuk, respectively. Similarly, the length at 50% maturity for males was estimated as 19.8 cm and 16.5 cm in Gangwon and Gyeongbuk, respectively.

• 한국수산과학회지
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• 제56권6호
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• pp.899-908
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• 2023

Droughts can alter the dynamics of aquatic ecosystems, including fish communities. This study compared the variations in fish communities in Juam reservoir before and after drought events. Fish sampling was conducted five times from April 2021 to April 2023 using three different sampling methods (kick net, cast net, and gill net). The water level in the reservoir reached its peak (103.73 EL.m, 62.2% capacity) in September 2021, before the drought, and dropped to its lowest point (88.84 EL.m, 17.6% capacity) in April 2023. The dissolved oxygen content in the reservoir decreased from 27 to 6.3 mg/L between the period with the lowest water level (April 2023) and the period with the highest water level (September 2021). In September 2021, 466 fish were collected, but after one year of drought, the number of individuals decreased to 105. Further, the number of fish collected and water levels were positively correlated. Dominant species exhibited a population decline of over 60% with decreasing water levels. These findings highlight the importance of fishery resource management during drought periods.