• Asian-Australasian Journal of Animal Sciences
• /
• v.19 no.7
• /
• pp.1033-1039
• /
• 2006

The metabolic response of Labeo rohita to thermal acclimation was assessed. Advanced fingerlings of L. rohita (average weight $31{\pm}1.4g$) were acclimated to 31, 33 and $36^{\circ}C$ compared with ambient temperatures ($26^{\circ}C$) for 30 days and different enzymes associated with stress response were estimated. Glycolytic enzyme-Lactate dehydrogenase, (LDH, E.C.1.1.1.27), TCA cycle enzyme-Malate dehydrogenase (MDH, E.C.1.1.1.37), Protein metabolizing enzymes-Aspartate amino transferase (AST, E.C.2.6.1.1) and Alanine amino transferase (ALT, E.C.2.6.1.2) of liver, gill and muscle, Gluconeogenic enzymes-Fructose 1,6 Bi phosphatase (FBPase, E.C. 3.1.3.11) and Glucose 6 phosphatase (G6Pase, E.C. 3.1.3.9) of liver and kidney were significantly (p<0.05) different with increasing acclimation temperatures. Heat Shock Protein-70 (HSP-70) was expressed in increasing intensity at 31, 33 and $36^{\circ}C$ but was not expressed at $26^{\circ}C$. Results suggest that higher acclimation temperatures enhance metabolism and L. rohita maintains homeostasis between $26-36^{\circ}C$ via an acclimation episode. Such adaptation appears to be facilitated by resorting to gluconeogenic and glycogenolytic pathways for energy mobilization and induction of HSPs.

• Korean Journal of Fisheries and Aquatic Sciences
• /
• v.53 no.1
• /
• pp.67-73
• /
• 2020

The maturity and spawning of the yellow goosefish Lophius litulon were studied using samples collected monthly from January to December 2018 from the coastal waters of Korea. We analyzed monthly changes in maturity stage, gonadosomatic index (GSI), total length (TL) at 50%, 75%, and 97.5% group maturity, egg diameter and fecundity. The spawning period was from January to June. The size of eggs spawned was between 0.30 to 1.28 mm. Fecundity varied between 328,314 to 1,624,783 eggs. The percentage of sexually mature females estimated from a logistic function was over 50% at 48.67 cm TL, 75% at 56.76 cm TL and 97.5% at 74.89 cm TL.

• Korean Journal of Fisheries and Aquatic Sciences
• /
• v.53 no.1
• /
• pp.43-49
• /
• 2020

The maturation and spawning of red seabream Pagrus major were investigated using 1,014 samples collected monthly from January to December of 2018, in the South Sea of Korea. Based on monthly changes in maturity stage and gonadosomatic index, the spawning period was estimated to be between April and August, with peak spawning occuring from May to June. Fecundity varied between 228,996 and 4,544,948 eggs. The relationship between fecundity (F) and fork length (FL) in this species can be expressed by the equation F=0.4869FL^3.9452 (R²=0.7448). Using a logistic function, the percentage of sexually mature females was estimated to be over 50% for fish with a FL of 35.3 cm.

• Journal of the Korean Society of Fisheries and Ocean Technology
• /
• v.55 no.1
• /
• pp.74-81
• /
• 2019

According to the recent presentation by the Korean Maritime Safety Tribunal, about 70% of marine accident occurs from fishing vessel, and 90% of cause of entire marine accidents attributes to human error. As fishing vessels require basic operations, fishing operations, other additional operations and techniques such as fish handling, cultivating excellent marine officer to prevent marine accident and develop industry is very important. A fisheries training ship is still very difficult to satisfy the demand for diversity of fishery training and sense of realism of the industry. As the result of employment expectation by category of business survey targeting 266 marine industry high school graduates who hope to board fishing vessels for the last four years, tuna purse seine was the highest with 132 cadets (49.6%), followed by offshore large purse seine (65 cadets, 22.4%), and tuna long line (35 cadets, 13.2%). The Korea Institute of Maritime and Fisheries Technology (KIMFT) has replaced old jigging and fish pot fishery training ships and proceeded developing and building multi-purpose fisheries training ships considering the demand of industry and the promotion of employment; however, the basic fishing method was set for a tuna purse seine. As a result of seakeeping model test, it can conduct the satisfiable operation at sea state 5, and survive at sea state 8.

• Journal of Fisheries and Marine Sciences Education
• /
• v.6 no.2
• /
• pp.130-142
• /
• 1994

To investigate the effective scheme to secure the specialized instructors in the governmental officials training facilities, the authors made a survey on the opinion concerning the dispatching service system of officials as instructors to the Fisheries Officials Training Institute on the fisheries specialized officials in the Fisheries Agency and its affiliated organization. The obtained results can be summarized as follows : 1. The exiting personnel management system has a lot of difficulties to secure the specialized instructors. Even though the difficulties may be solved by inviting part-time instructors to some extent, it is remote from the goal. The active utilization of dispatching service system of specialized officials to the Institute as instructors during the limited term will be effective rather than re-arrangement of personnel system or amendment of laws and ordinances to secure the specialized instructors. 2. The response of specialized officials who are objected in the present survey on the dispatching service system to the Institute appeared to be affirmative considerably, and then the dispatching service system may be expected of high efficiency in its realization.

• Journal of Fisheries and Marine Sciences Education
• /
• v.27 no.3
• /
• pp.821-832
• /
• 2015

The aims of this study are to estimate the optimal vessel reduction scales and these direct economic effects of coastal and offshore fisheries in the Republic of Korea. To estimate respectively optimal fishing efforts of individual fishery by species in coastal and offshore fisheries, we adopted appropriate fishing power of each species published by National Fisheries Research and Development Institute and also considered biological and socio-economic factors such as the bycatch rate, the profit rate, the efficiency of resource use, the average age of fishing vessel, the intention of vessel reduction, and the annual changes in vessels by other factors. The direct economic effects of the optimal vessel reduction in coastal and offshore fisheries based on maximum sustainable yield and 2/3 maximum sustainable yield was calculated by a cost-benefit analysis. This study showed that optimal reduction numbers of vessels engaged in coastal and offshore fisheries were 4,431 and 374 vessels and the direct economic effects in coastal and offshore fisheries were about 371.7 and 569.4 billion won and these NPV and BCR were 111.7 billion won and 1.65 and 342.6 billion won and 4.97 respectively.

• Journal of Fisheries and Marine Sciences Education
• /
• v.27 no.5
• /
• pp.1479-1490
• /
• 2015

This study analyzed the fishery and maritime vocational high school teachers' recognition on the outcomes and future agenda. In addition, it delineates the importance of the vocational education division being carried out for 10 years in the College Scholastic Achievement Test (CSAT). In order to gather relevant information, 76 teachers who work in 12 different fishery and shipping vocational high schools around the country were surveyed. The findings of the fishery and maritime department teachers' recognition on the matter are as follows: First, the biggest impact the vocational education division in the CSAT had was on the promotion of continuing education and on the fulfillment on the vocational high school students' desire to compete and enter universities. Second, the CSAT with the vocational education division allowed students to choose a variety of paths after high school whether they be full-time employments or pursuing a degree in universities. Third, the biggest obstacle for the vocational education division in the CSAT is in the most metropolitan universities not honoring the CSAT scores as a criterion in the admission process.

• Journal of Fisheries and Marine Sciences Education
• /
• v.3 no.1
• /
• pp.1-8
• /
• 1991

A rapid increase in population is most likely to become a menace to human existence, and will cause unfavorable effects. Therefore, we must consider it as an urgent task to make use of marine resources in various ways. Korea particularly laks potential resources, so has no other way but to exploit and utilize the resources for its overall economic growth. In therms of these viewpoints. this report studies the constructive measures and programme for promoting Korean marine industry education after reassessing the aspects of marine industry and analyzing the present situation and problems of the Korean science and technology today. Under these circumstances. it is suggested that financial and administrative support be afforded by government and the authorities concerned for the reformation of curriculum and educational system, inverstment growth for improving educational environments and research conditions. In addition, administrators and teachers are expected to exert their utmost efforts to bring ahout encouraging results in the marine industry education.

• Journal of Fisheries and Marine Sciences Education
• /
• v.27 no.4
• /
• pp.1053-1062
• /
• 2015

This research assesses the implementation of the bilateral fisheries order of the China-Japan fisheries agreement. After establishment of UNCLOS, the China-Japanese fisheries agreement has played as a basis for the fisheries order in the East China Sea. The China-Japanese fisheries agreement intends that the fisheries industries in China and Japan can utilize the renewable natural resources in the East China Sea. As the EEZ of China overlaps with that of Japanese in the East China Sea, the two countries established the China-Japan Provisional Measure Zone and Middle Zone in the Sea. Even though the three coastal States (e.g. Korea, China, and Japan) in the East China Sea are involved in managing these zones, there has been little effort to coordinate each county's management. Additionally, the Taiwan-Japan fisheries agreement, which is for the area of N $27^{\circ}$, has made costal States to establish and implement united measures to conduct effective fisheries management. Regarding access to the joint fishing zone in EEZ, Chinese fisheries regulations have been enforced in the zone because the fishing capacity of China exceeds all of other countries, reducing the number of fishing licenses and catch quotas. It turned out that a nation that has authority over fisheries resources tends to establish specific conditions of fishing operations to maximize its national interest. In the China-Japan Provisional Measure Zone, Chinese and Japanese authorities have introduced united measures to manage fisheries resources. However, in the Middle Zone between China and Japan, there is no regulation on fishing; both countries' fishing vessels can have free access to the zone. Thus, it is recommended that one should introduce an international fisheries management regime for the Middle Zone. In this regard, Korea should play a leading role in establishing the international management regime because Korea has middle position in terms of geographical standpoint, the degree of dependence on commercial fishing, and its fishing capacity.

• Journal of Fisheries and Marine Sciences Education
• /
• v.14 no.2
• /
• pp.129-148
• /
• 2002

The purpose of this study was to investigate of fishery consciousness for fisheries high school teachers. The data was collected from 61 fisheries high school teachers in Kyungbuk Province. The treatment of materials are classified by level of academic careers, teaching careers. This research evaluated percentage to the frequency of reponses to each question and carried out $\chi^2$ - test, etc. The statistically significant level accounted for p<.05 and made use of SPSS10.0. The conclusion of the study were as follows: Strategic development of fisheries high school on fishery consciousness need to program with fishery characteristic, to promote maritime affairs had better systematic publicity activities. On educational system policy need to keep consistency of occupational education policy, change of titles of school and reconstruction of department, expand of carrier guidance direction. On high self-conceit of Hsheries high school teachers need to many discussion be based program of school itself and academic society. And director and vice-principle station region of islands, etc.