• Title/Summary/Keyword: Fishery management

Search Result 554, Processing Time 0.025 seconds

Length-based stock assessment of the pacific yellowtail emperor in the Southern Sulawesi, Indonesia

  • I Nyoman Suyasa;Alifah Fitam Rakhma Sari;Siska Agustina;Rian Prasetia;Ratna Suharti;Toni Ruchimat;Budy Wiryawan;Irfan Yulianto
    • Fisheries and Aquatic Sciences
    • /
    • v.26 no.3
    • /
    • pp.216-223
    • /
    • 2023
  • Pacific yellowtail emperor, Lethrinus atkinsoni Seale, 1910, is one of the most targeted reef fish species in Southern Sulawesi, Indonesia. Therefore, assessing its stock is important to understand the condition of the population, providing valuable inputs for sustainable fisheries management in the area. Here we assess the stock condition of L. atkinsoni in Southern Sulawesi, Indonesia, using the length-based spawning potential ratio model. A total of 4,887 individuals were collected from commercially small-scale fishers from January to October 2022. The total length, sex, and gonad maturity of the individuals were examined. We observed that the fish length ranged from 10.5 to 39.5 cm, with an average length of 23.3 cm. The sex ratio was equal (1:1.2) between male and female individuals. Length at first maturity and length at first capture were 23.4 and 19.6 cm, respectively. In addition, we observed a growth coefficient of 0.45/year, with an asymptotic length of 41.14 cm and natural mortality of 0.6/year. Based on these life history parameters, we observed the spawning potential ratio (SPR) value of 12%, indicating an unsustainable fishery level (SPR of < 30%). Further concerns related to the sustainability of the species and strategy to rebuild stock of the L. atkinsoni in Southern Sulawesi are of utmost importance.

Immunological significance of recombinant VP2 and VP3 proteins of aquabirnavirus in olive flounder, Paralichthys olivaceus

  • Kim, Hyoung Jun;Kim, Ki Hong;Park, Jeong Su;Lee, Haeng Lim;Kwon, Hyuk Chu;Kwon, Se Ryun
    • Journal of fish pathology
    • /
    • v.28 no.2
    • /
    • pp.93-98
    • /
    • 2015
  • Full-length recombinant VP2 and VP3 proteins of aquabirnavirus isolated from olive flounder were expressed successfully in E. coli expression system. After rats were immunized with these proteins, antisera were used for in vitro and in vivo neutralization test. In in vitro test, VP2 antibody titers were higher than that of VP3. In in vivo assays, fish challenged with aquabirnavirus neutralized with VP2 antibody survived longer than other fish.

A Study on the Korean Tuna Fishery Management and Economics (한국 다랭이 어업의 경영에 관한 연구)

  • Je-hu Lee
    • The Journal of Fisheries Business Administration
    • /
    • v.19 no.1
    • /
    • pp.13-35
    • /
    • 1988
  • 그간 다랭이원양어업연구는 단순한 통계와 생물·자원적 측면에서 고찰되어 왔다. 그러나 현시점에서는 무엇보다 경영과 경제적 공헌도를 비교하면서 그 실질적 발전책을 찾아야 할 것이다. 그 이유로는 200해리경제수역이 정착화되어 가는 현상황에서 좋든 싫든 대다수의 원양어업을 수행하는 국제들이 그 제도를 받아 들여야 할 입장이기 때문이다. 이러한 입장은 원양어장에 진출하는 국가들 뿐만 아니라, 아무런 대응책도 없이 무조건 200해리경제수역을 설정하여 놓은 연안당사국들도 자국의 경제수역내에 있는 빙산자원을 경영경제적으로 유교하게 활용하기를 희망한다. 더우기 다랭이어종의 주요동유로가 200해리경제수역내의 연안국가들에 연접되어있다. 그러므로 200해리경제수역을 보유하고 있는 연안국가들과 동수 성에 진출을 기도하는 원양어업국가들 간에 합작어업을 실시해야 할 것이다. 물론 우선적으로 입어조업의 전단계를 밟아야 하나 종국적으로는 합작어적이 바람직하다. 합작어업의 중요성은 어업자체 뿐만 아니라 그 파급효과를 거둘 수 있다는데 있다. 합작어업은 정치적·사회적 연구도 수반되나 우선적으로 부가가치를 가져와야 하므로 경영경제적 측면에서 연구고찰되어야 한다.

  • PDF

Red Tide Prediction in the Korean Coastal Areas by RS and GIS

  • Yoon, Hong-Joo
    • Proceedings of the KSRS Conference
    • /
    • v.1
    • /
    • pp.332-335
    • /
    • 2006
  • Red tide(harmful algae) in the Korean Coastal Waters has a given a great damage to the fishery every year. However, the aim of our study understands the influence of meteorological factors (air and water temperature, precipitation, sunshine, solar radiation, winds) relating to the mechanism of red tide occurrence and monitors red tide by satellite remote sensing, and analyzes the potential area for red tide occurrence by GIS. The meteorological factors have directly influenced on red tide formation. Thus, We want to predict and apply to red tide formation from statistical analyses on the relationships between red tide formation and meteorological factors. In future, it should be realized the near real time monitoring for red tide by the development of remote sensing technique and the construction of integrated model by the red tide information management system (the data base of red tide - meteorological informations). Finally our purpose is support to the prediction information for the possible red tide occurrence by coastal meteorological information and contribute to reduce the red tide disaster by the prediction technique for red tide.

  • PDF

Survey on the Income Distribution of Fishing Households in Korea (어가소득분포에 관한 조사연구)

  • 이강우
    • The Journal of Fisheries Business Administration
    • /
    • v.13 no.1
    • /
    • pp.47-61
    • /
    • 1982
  • This paper first makes a survey of fishing household economy which possess fishing boats under 10 gross Tons by a questionnaire, and makes a comparative study of major indicators of fishing household economy between Korea and Japan, and finally suggests some policies for the fisheries management. Major indicators are the status of fishery household members, number of fishing boats which possess, fisheries incomes, fishing household incomes, side business incomes of fishing household, disposal incomes, living expenses, sufficient degree of living cost, average propensity to consumption and so on. Some policies for improvement in fishing household incomes are suggested in the paper as follows: ⑴ Form a policy similar to a project aiming for increasing the income of fishermen so that the side business income will also increase. ⑵ The point of view in tracing origin of low productivity. ⑶ It has drawn up a plan to encourage saving after analyzing the cause of high propensity to consumption. ⑷ The paper is aimed to collect basic statistical materials for fisheries administration.

  • PDF

Application of HACCP System in the Pork Industry in Korea - Review -

  • Chung, M.S.
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.12 no.2
    • /
    • pp.253-260
    • /
    • 1999
  • Occurrences of foodborne disease outbreaks are increasing in Korea. Among the outbreaks, Salmonella, Staphylococcus aureus, Vibrio parahaemolyticus are the most important organisms and meat and meat product the major sources of infection. Hazard Analysis Critical Control Point system is a process control system designed to identify and prevent microbial and other hazards in food production. It is considered to be the best process management system by the National Advisory Committee for Microbiological Criteria for Foods, the National Academy of Science, and the Codex Alimentarius Commission. The Korean Ministry of Health and Welfare established a legal basis for the implementation of the HACCP system in Article 32-2 (Hazard Analysis Critical Control Point) of the Food Sanitation Act in December 1995. The Ministry of Agriculture and Forestry has granted research funds for the development of this model system for application to traditional food products and processed fishery products as well as to raw meats. Implementation of the HACCP system is an important step and the Korean food industry and the Government are focused on ensuring food safety in Korea.

A Study on the Enhancement of the Quality of Pusan Port Traffic Management Service (부산항 해상교통관제 서비스의 품질개선에 관한 연구)

  • 이은방;윤정수
    • Proceedings of KOSOMES biannual meeting
    • /
    • 2001.05a
    • /
    • pp.105-133
    • /
    • 2001
  • World trade has been increasing continuously in total volume, on the other hand, environmental protection on sea and conservation of fishery resources has been rising up the major issue. All of the world are pushing their efforts two major purposes to the full, one is taking competitive place in marine transportation throughout the world and another Is environment protection. Pusan Port as world leading Port put its all effort in bring more ocean going vessels and securing their traffic route by providing them more information related marine traffics through PTMS in port. During two years of operation, statistics of marine traffic accidents showed that many dynamic casualties such as collisions, groundings, and rammings has been decreased. However, due to increasing cargo volume, limited water area and unpredictable weather condition, potential risks still exist high. In this paper, in order to maximize the efficiency of PTMS and reduce various risks in the future, we examine risk factors over operational results and experience, and propose reasonable operational methods of PTMS.

  • PDF

Import quarantine for supporting local fisheries 'M-LIMS' Analysis and Design (수입 수산물의 현지 검역 지원용 'M-LIMS'의 분석 및 설계)

  • Yang, Kyung-Sik;Ahn, Woo-Young;Park, Sung-Sik;Koo, Kyung-Wan
    • Proceedings of the Korean Society of Computer Information Conference
    • /
    • 2014.07a
    • /
    • pp.433-436
    • /
    • 2014
  • 기존 수입 수산물 검역체계는 수십억의 예산을 사용하고 있다. 하지만, 현지 조사에서도 파견원을 보내는 시간이 존재하고 그에 따라 수산물의 상태가 달라질 수 도 있다. 이 논문에서는 이러한 검역체계의 한계를 극복하기 위하여 차량 내부에 장비를 설치 데이터를 분석 후 Server에 전송하는 시스템을 제안한다. 이 시스템을 사용하여 기존 검역체계의 단점을 보완한다. 그리고 베트남을 예상 시나리오로 설정하고 계획을 하였다. 이 시스템은 시간, 공간적인 제약을 극복하고 실시간 상호작용이 원활한 시스템으로 마련될 것이다.

  • PDF

The Problems of US Import Prohibition of the IUU Fishing Products and its Implication (미국 IUU 수산물 수입통제제도의 문제점과 시사점)

  • Park, Min Gyu
    • Ocean policy research
    • /
    • v.33 no.2
    • /
    • pp.1-23
    • /
    • 2018
  • The import control provision of US MSA (Magnuson-Stevens Fishery Conservation and Management Act) IUU fishing is similar to that of MMPA (The Marine Mammal Protection Act of 1972 as Amended) which caused US-Tuna(1991) case. This paper examines whether MSA's import control provision can be found to be inconsistent with WTO agreement. There is no doubt that MSA violates the Article XI:1 of the GATT 1994. The only remaining issue is whether US IUU fishing product measure is justified by the Article XX(g) and its Chapeau. However, Article XX(g) provides for a limited and conditional exception from obligations under other provisions. This paper concludes that the US MSA measure can not be justified under Article XX.

Notochord opacity in fry ayu, Plecoglossus altivelis

  • Huh, Min Do;Lee, Hyo Eun;Lee, Mu Kun;Kim, Bo Sung
    • Journal of fish pathology
    • /
    • v.34 no.1
    • /
    • pp.117-121
    • /
    • 2021
  • An ayu (Plecoglossus altivelis) farm in Korea recently experienced an epidemic of vertebral column deformities where about 90% of fry displayed a vertebral column that was grossly opaque along either the cranial part of the column or its entire length. Abnormal fish were lordotic, scoliotic and/or kyphotic about midway down the spine. Examination of serial sections of whole fish showed only histological lesions in the vertebral column and suggested some disturbance in the early development of the vertebral centrum. Such abnormalities included a frayed spinal or notochord sheaths with irregular thickening and compression, mal-absorbed notochord cells, thickening of around cell layer and hypercellularity on both facets of the notochord sheath. No parasites, fungi, or bacteria were detected. While this lesion has only been reported once in the past, this is the first report of histopathological findings.