Journal of Fisheries and Marine Sciences Education
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v.3
no.1
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pp.35-43
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1991
The fishing vessels operation is a kind of maritime profit-making activities, which are complicatedly integrated by the basic and supplemental fishing activities with navigation. The Fishing Vessels Act of Korea defines the character of fishing vessels and gives a legal status to them, and this Act itself is linked with the allied public laws including the Ships Act of Korea. For this reason, the legal status of fishing vessels as Korean flagged ships by the public law is analogous to the general commercial vessels. And the specific character of ownership of the fishing vessels by the Korean Maritime-Commercial Act as a privated law is analogous to the general commercial vessels, nevertheless the Chapter 4(Carriage of goods) and the Chapter 5(General average) of this Act do not apply to the fishing vessels except the fish carriers. A fishing vessel possesses the legal status as a Korean flagged ship by having it registered and putting it on record under the provision of national law, however the principle of genuine link is an important factor for acquisition of nationality. Especially, the basic rules by the Law of the Sea those are attended with the distant-water fishing vessels operation at the overseas fishing ground are summarized as follows ; Firstly, the rights of navigation and fishing activities on the high seas are fundamentally recognized to all states, but the freedom is restricted according to the international legal order aiming at protection of reasonable interests of other states and conservation of the living resources and marine environment. Secondly, in the EEZ or EFZ the freedom of navigation is recognized, but fishing activities are exclusively ruled by the national law of the coastal state. Thirdly, foreign fishing activities are prohibited but the right of innocent passage is recognized in the territorial sea, while both activities are prohibited in the internal waters of the coastal state.
Journal of Fisheries and Marine Sciences Education
/
v.9
no.2
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pp.121-148
/
1997
The Japanese fishery management system has been established on the basis of various experience accumulated over many years. The fishery management system in Japan, one of the oldest fishery management systems in the world, is aimed at ensuring comprehensive utilization of the water surface and developing fishery productivity, by giving protection of the breeding environment of aquatic animals and plants, enabling the appropriate use of fishery grounds, preventing and solving disputes over fishery grounds and making other fishery adjustments. Japanese Fishery Law has been changed largely into (1) The Feudal Era(to 1900), (2) The Oldest Fishey Law(1901~48), (3) Current Fishery Law(1949 to present). Japanese fishery legislation is designed as a single package combining coastal, offshore and distant-water fisheries. During the period of the old fishery law, numerous conflicts arose over the joint use of fishing grounds and fish stocks. Such conflicts occurred among users of the same gear as well as between users of different gears or of different sizes of fishing craft. Large scale conflict sometime occurred between neighbouring fishing communities due to a lack of fairness in principle and coordination in practice. Therefore, the new fishery law enacted in 1949. This law was designed primarily to realize the most effective and rational use of fishing grounds and fishery resources, the basic philosophy being that, through democratic organization by fishermen themselves, productivity would be stimulated and incomes and living standards eventually improved. Nowadays, Community Based Fisheries Management through democratic organization by fishermen themselves have to enforce at coastal fisheries. This Community Based Fisheries Management manage to fishery resources by fishermen themselves and harvest in collaboration with that resources. Therefore, this paper is intended to briefly to describe the entire system and the historical development of Japanese fishery legislation in order to assist in reform of our country fisheries management regime.
Park, Kyung-Seo;Hong, Young-Pyo;Choi, Shin-Suk;An, Kwang-Guk
Korean Journal of Ecology and Environment
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v.38
no.2
s.112
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pp.207-216
/
2005
Spawning behaviors of Squalidus gracilis majimae (Cyprinidae) were observed in the laboratory whose environmental factors such as light (D/L = 16 : 8), temperature ($20\;{\sim}\;24\;^{\circ}C$), and dissolved oxygen (>8 mg $L^{-1}$) were quite regularly controlled. The behavioral patterns were categorized into three stages ofpre-spawning, spawning, and Post-spawning behaviors. In Particular, the pre-spawning stage was specified by 11 specific behavioral patterns of aggressive mating behaviors. During the spawning stage, the male and female performed four distinct spawning behaviors including sexual temptation, stimulation, egg spawning, and the separation, and randomly laid about 200 ${\sim}$ 300 eggs on the bottom substrates through the night. After finishing spawning, two adults separated toward their refuges and showed 3 types of post-spawning behaviors such as the resting, occasional eggs protecting, and the egg eating. The fish was identified as a partial-parental care species after the spawning.
In this study, seafood products (n=26) sold on sushi buffet restaurants in the city of Wonju were monitored by analyzing sequences of DNA barcode markers (cytochrome c oxidase subunit I and 16S ribosomal RNA genes). NCBI BLAST database was screened with the barcode sequences analyzed as a query for species identification. The BLAST search revealed that fifteen samples (58%) analyzed were consistent with their labeling information; however, the ingredients used in seven samples (27%) were not compliant with their label information. In the case of these mislabeled products, ingredients for sutchi catfish sushi and cherry bass sashimi were identified as Pangasianodon hypophthalmus and Lampris guttatus, respectively. For Japanese flying-fish roe sushi and Pacific herring roe sushi, roe of Mallotus villosus was used as an ingredient. Amphioctopus fangsiao and A. membranaceus were used in octopus sushi and soybean-marinated squid products, respectively. This monitoring result can contribute to the protection of consumer rights and the reduction of fraudulent practices in the food industry.
A laboratory experiment was conducted to determine chronic effects of waterborne copper exposure on rock bream Oplegnathus fasciatus using a panel of enzymes. The activities of the following biochemical biomarkers were determined at different concentrations of $CuSO_4$ for 10 and 20 days: alanine aminotransferase (ALT), aspartate aminotransferase (AST), and lactate dehydrogenase (LDH) in plasma; antioxidant enzymes including glutathione (GSH), superoxide dismutase (SOD) and glutathione peroxidase (GPx) in liver and gills; and acethylcholinesterase (AChE) in brain and muscle. After exposure to two $CuSO_4$ concentrations (200 and $400{\mu}g/L$), the activities of plasma ALT in the fish showed a tendency to increase with AST and LDH, depending on $CuSO_4$ concentration. Additionally, GSH levels and SOD activities significantly increased, depending on $CuSO_4$ concentrations in liver and gills. This involved the inactivation of reactive molecules formed during oxidative stress, which could provide protection against oxidative damage induced by $CuSO_4$. However, GPx and AChE activities significantly decreased with $CuSO_4$ in liver and gills. In conclusion, these enzymes may represent convenient biomarkers for monitoring heavy metal pollution in coastal areas. Such chronic exposure studies are necessary for improving our understanding of complementary or deleterious effects of pollutants, and for developing metal toxicity biomarkers.
Journal of the Korean Society of Fisheries and Ocean Technology
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v.50
no.3
/
pp.385-395
/
2014
This study is one of the research series for providing basic data that would contribute to the development of the field of fishing industry through the systematic fishing management, protection of fishery resources and healthy fishing culture with safety measures for fishermen in Jeju island according to the implementation of "Fishing Management and Support Act". As a result of analyzing the related acts, the contents of this study are related with provisions of "Fishing management and Support Act" on acts on fishing management, fish bait management, support for fishing and fishing related industries and with provisions of "Act of the preservation and management of desert island" on the preservation, use and development of desert island (use and development in a desert island, behavior in usable desert island). As a result of the survey, the rocks on the seashore showed the highest popularity with 52.6% for fishermen and the seawall was the highest with 47.1% for Maritime police as their fishing place in the fishing related activity data. And as the survey result about the awareness of "Fishing management and Support Act", 65.2% of general fishermen, 36.0% of maritime police and 70.5% of fishing related agencies answered that they knew the act. It was also surveyed whether they consider its contribution to fishing related industry development and positive result was shown by general fishermen and maritime police with 46.8%, 48.0% respectively whereas fishing-related enterprises showed negative answer with 47.7%. In the survey of fishing related regulation standard, general fishermen, maritime police and fishing related agencies all showed different opinions regarding the regulation standard. It is recommended that regulation standard needs to be set up after detailed review.
The green turtle Chelonia mydas has been designated as an endangered species globally due to its reduced population. Although C. mydas is not known to reproduce on the shores of the Korean peninsula, it has been listed as a protected marine species in South Korea. This study describes the first successful captive breeding of C. mydas in a commercial aquarium in South Korea and provides information on the early growth patterns of C. mydas hatched and reared in indoor facilities. C. mydas YS-B003 laid a total of 594 eggs in ten nesting events in the period December 2016-June 2017. Of these, 115 fertilized eggs from six events hatched successfully. The size of the newly hatched turtles differed significantly among nesting events. The hatchlings from the 8th and 9th nesting events were relatively smaller than those from the 3rd and 5th events. The rate of growth initially varied across the different events, but from the 1,000th day, the inter-group variation disappeared. The present study provides useful information for future captive breeding of sea turtles in indoor facilities, which would contribute to the protection of these endangered sea turtle species.
Kim, Jae-Ok;Shin, Hyun-Sang;Yoo, Ji-Hyun;Lee, Seung-Heon;Jang, Kyu-Sang;Kim, Bom-Chul
Korean Journal of Ecology and Environment
/
v.44
no.3
/
pp.253-263
/
2011
This study was conducted to gain preliminary data for restoration and management of constructed small-scale ponds in paddy fields through analysis of their physicochemical and biological properties. A field survey was performed at 13 small-scale ponds located in paddy fields from August 2009 to October 2010. Structural properties, water quality, soil characteristics and fish fauna were measured. Results showed that small-scale ponds without frames might lose their function over time because of crumbling walls. Therefore, it is necessary for these ponds to have frames for soil protection and sustainable maintenance. Chemical oxygen demand (COD), total nitrogen (TN) and total phosphorus (TP) concentration were higher than the water quality standard for agricultural water in small-scale ponds. In particular, TN concentration was 8.03 mg $L^{-1}$ and over 8 times the water quality standard because of the presence of livestock such as cows and pigs in the study areas. Sand, organic matter and available phosphorus contents of soil in small-scale ponds was 53.4${\pm}$16.6%, 21.8${\pm}$9.74 g $kg^{-1}$ and 12.8${\pm}$7.59 mg $kg^{-1}$, respectively indicating that sand and available phosphorus contents were suitable for plants in small-scale ponds, but organic matter contents was somewhat low in newly constructed small-scale ponds, and would take some time to stabilize for plant growing. Fish fauna was not diverse with only 4 species at all sites surveyed. Collected fishes share a common feature that they all inhabit paddy fields or canals with shallow water depth. In this study, all ponds were not linked to the streams and canals around them. It appears that connection to adjacent streams was the major factor controlling fish fauna in small-scale ponds. The results of statistical analysis were classified into three groups. Factor 1 was 26.3%, which shows a structural properties such as area and depth of small-scale pond. As for factor 2, it appears on 20.1%, showing water quality like a TP, suspended solids (SS) and COD. Small-scale ponds were classified into three groups by factor scores. Group I consisted of 6 small-scale ponds, which were larger than the others. Group III had higher water quality than the others. We conclude that the most important points to be considered for restoration and management of small-scale ponds is connection with adjacent streams or ditches and depth and size of the small-scale pond.
Lipie peroxide formation, antiperoxidative s system and body adaptability for handling lipid p peroxide were examined in the first and second g generations of rats fed fish oil. Mackerel oil(MO) was used and four other dietary oils and fat, i.e. soybean oil(SO), perilla oil(PO), rapeseed oil(RO) and beef tallow(BT) were also employed to compare the effect of fish oil. Synthetic diets containing these five dietary fats at the level of 1O%(w/w), were given to the correspondm ing groups of male and female rats weighing about 70 grams. After 34 days of feeding, male a and female rats were mated and their offsprings were raised throughout suckling (17, 26 days) and weanling (39 days) periods. Liver lipid perox xide level was highest in MO group of both first (mother rats after lactation) and second generat tions of 17 and 26 days old, but not of 39 days old. During suckling period, liver lipid peroxide level was well matched to total unsaturation of dietary fat. Brain lipid peroxide levels were not different among five groups. Liver $alpha$-tocopherol a and reduced glutathione (GSH) levels were lowest in MO fed first generation. In second generation, $alpha$-tocopherol level was also low in MO group, although the effect was less pronounc ced, but GSH level was not different from other groups. Oxidized glutathione (GSSG) level did not consistently vary by change in dietary fat. Glutathione peroxidase activity increased as young rats grew up to 39 days. Superoxide d dismutase activity change was insignificant by a age, but was shown as lowest in MO group. At the age of 26 and 39 days, liver glutatione peroxidase activity was increased as was level of lipid peroxide, suggesting that this is the one of the mechanisms responsible for body adaptab bility for protection against the accumulation of lipid peroxide.
Chung, In Young;Seo, Yong Bae;Yang, Ji-Young;Kim, Gun-Do
Journal of Life Science
/
v.27
no.11
/
pp.1331-1339
/
2017
DNA barcoding is the identification of a species based on the DNA sequence of a fragment of the cytochrome C oxidase subunit I (COI) gene in the mitochondrial genome. It is widely applied to assist with the sustainable development of fishery-product resources and the protection of fish biodiversity. This study attempted to verify horse-head fish (Branchiostegus japonicus) and fake horse-head fish (Branchiostegus albus) species, which are commonly consumed in Korea. For the validation of the two species, a real-time PCR method was developed based on the species' mitochondrial DNA genome. Inter-species variations in mitochondrial DNA were observed in a bioinformatics analysis of the mitochondrial genomic DNA sequences of the two species. Some highly conserved regions and a few other regions were identified in the mitochondrial COI of the species. In order to test whether variations in the sequences were definitive, primers that targeted the varied regions of COI were designed and applied to amplify the DNA using the real-time PCR system. Threshold-cycle (Ct) range results confirmed that the Ct ranges of the real-time PCR were identical to the expected species of origin. Efficiency, specificity and cross-reactivity assays showed statistically significant differences between the average Ct of B. japonicus DNA ($21.85{\pm}3.599$) and the average Ct of B. albus DNA ($33.49{\pm}1.183$) for confirming B. japonicus. The assays also showed statistically significant differences between the average Ct of B. albus DNA ($22.49{\pm}0.908$) and the average Ct of B. japonicus DNA ($33.93{\pm}0.479$) for confirming B. albus. The methodology was validated by using ten commercial samples. The genomic DNA-based molecular technique that used the real-time PCR was a reliable method for the taxonomic classification of animal tissues.
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