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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Journal of Fisheries and Aquatic Sciences
Journal Basic Information
Journal DOI :
The Korean Society of Fisheries and Aquatic Science
Editor in Chief :
Volume & Issues
Volume 27, Issue 6 - Nov 1994
Volume 27, Issue 5 - Sep 1994
Volume 27, Issue 4 - Jul 1994
Volume 27, Issue 3 - May 1994
Volume 27, Issue 2 - Mar 1994
Volume 27, Issue 1 - Jan 1994
Selecting the target year
-value Criterion for Canned Tuna in Cottonseed Oil
HAN Bong-Ho ; CHO Hyun-Duck ; YU Hong-Sik ; KIM Sang-Ho ; CHUNG Youn-Soo ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 675~681
]-values of the canned tuna in cottonseed oil (CTCO) were investigated under different sterilizing conditions to optimize the energy consumption and microbiological safety. The
-values were measured using a microcomputer based technique. The exact cold point was not the volumetric center of the cans, and it was located in the center of meat mass in can which had ca.
of head space. Location of the test cans in retort showed no remarkable influence on the
-values when the cans were jumble loaded. The process time before sterilization should be shortened as much as possible to prevent the contamination of microorganisms. Thermophilic spore forming bacteria found from raw and precooked tuna were Bacillus subtilis, Bacillus cereus and Bacillus pasteurii, and the most heat resistant was Bacillus subtilis. The rational
-value for the CTCO obtained from the preservation test was regarded as 6min.
Toxicity of Several Puffers Collected at a Fish Market of Pusan, Korea
JEONG Dong-Youn ; KIM Dong-Soo ; LEE Myung-Ja ; KIM Sang-Rok ; BYUN Dae-Seok ; KIM Hyun-Dae ; PARK Yeung-Ho ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 682~689
Ninety-six specimens of nine puffer fishes landed at a fish market of Pusan, Korea were assayed for anatomical distribution of toxicity. The puffers, Lagocephalus gloveri ('geommilbog'), Fugu rubripes rubripes ('jajubog'), Fugu rubripes chinesis ('geomjajubog'), Lagocephalus wheeleri ('hinmilbog') and Arothron firmamentum ('byeolbog'), were shown to be nontoxic in muscle and skin. However, toxicities in skins of four specimens of Lagocephalus gloveri and a specimen of Arothron firmamentum were more than 10MU/g In the puffer, Fugu xanthopterus ('ggachibog'), the skin showed to be weakly toxic as far as nine specimens out of 27 ones are concerned, and the muscle was nontoxic in all specimens. Meanwhile, it was noted that the puffer, Fugu vermicularis radiatus was found to be a toxic species, differing from the toxicity known so far. Their highest toxicities were 3,880, 1,191, 1,115, 219, 289, 5,620 and 753MU/g for liver, intestine, skin, muscle, testis, ovary and bile, respectively.
Biological Phosphorus and Nitrogen Removal in Anaerobic-Aerobic Activated Sludge Process
CHOI Seung-Tae ; PARK Mi-Yeon ; CHANG Dong-Suck ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 690~695
Simultaneous removal of phosphorus and nitrogen from wastewater was studied by the anaerobic-aerobic system of activated sludge. In the anaerobic stage, most of the influent glucose was removed and orthophosphate was released, when the nitrate and/or nitrite concentration in the wastewater was almost zero. The amount of the released phosphorus was found to be directly proportional to the amount of the removed glucose. When the ratio of phosphorus to glucose in the influent was less than 0.04, the phosphorus in the wastewater was almost completely removed during the aerobic state. Under the anaerobic condition, activated sludge released phosphate and excess removal of phosphate occurred during the aerobic condition. Namely, the stress received in anaerobic period stimulated the uptake of phosphorus in aerobic period. The amounts of phosphorus release in the anaerobic and uptake in the aerobic stage were less in proportional to the concentration of
. Further, if the initial ratio of
/glucose was less than 0.37, the inorganic nitrogen in the influent could be completely removed.
Antioxidant Activity of Different Lipid Extracts from Squid Viscera
JEONG Yong-Sil ; HONG Jeong-Hwa ; BYUN Dae-Seok ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 696~703
To utilize waste of squid effectively, antioxidant properities of squid viscera were elucidated. Major fatty acids of total lipid, neutral lipid and phospholipid were
of total fatty acids. Total lipid did not show significant antioxidant activity when added to the fish oil at the concentration below
, Antioxidant activity of hexane extract was lower than total lipid or tetra carbon chloride-methanol(
) extract. Extracts with
exerted higher antioxidant activity as the methanol ratio was increased, suggesting that polar lipid plays and important role.
Characterization of Partially Purified Lipoxygenase of Mackerel Gill
HONG Jeong-Hwa ; SHIM Sun-Yup ; BYUN Dae-Seok ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 704~711
Lipoxygenase of mackerel gill exhibited the highest reactivity toward eicosapentaenoic acid (EPA) followed by arachidonic acid, linoleic acid. The optimum pH were pH 4.5, 5.0 and 4.8 for EPA, arachidonic acid and linoleic acid, respectively. The enzyme was the most stable at pH 5.5. Optimum temperature was
for all substrate fatty acids. For linoleic and arachidonic acids the highest thermal stability was observed at
whereas, for (EPA) at
. Optimum ionic strength was 0.22M,
, vitamin E and catechin completely inhibited the enzyme at the concentration of 1.0mM. Molecular weight of the enzyme was 42,000 dalton.
Essentiality of Dietary Eicosapentaenoic Acid and Docosahexaenoic Acid in Korean Rockfish, Sebastes schlegeli
LEE Sang-Min ; LEE Jong Yun ; HUR Sung Bum ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 712~726
Feeding trials were conducted to determine the essentiality of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), and to compare the efficiency between EPA and DHA for juvenile Korean rockfish. Fish averaging 2.1 g were fed experimental diets containing different levels of EPA or DHA, and different combinations of EPA and DHA in two separate experiments. Graded levels (
) of dietary EPA or DHA as ethyl esters were substituted for a part of the
beef tallow in the basal diet. After 5 weeks of the experimental period, weight gain, chemical composition of whole body, protein and lipid retention efficiency, hepatosomatic index, and fatty acid composition of liver were measured. Daily growth rate and feed efficiency were the lowest in fish fed the diets without EPA arid DHA. These responses were effectively improved by increasing EPA or DHA in the diets up to
levels, and then reached a plateau between 1.0 and
levels of either EPA or DHA. Protein and lipid retention efficiency were also improved with the high levels of dietary EPA or DHA. DHA was superior to EPA at the same level of each in weight gain, feed efficiency, and protein and lipid retention efficiency. Hepatosomatic index tended to decrease with increase of the dietary EPA or DHA levels. Lipid contents of whole body were increased with levels of EPA or DHA in the diets. Dietary EPA and/or DHA levels affected directly the fatty acid composition of liver polar lipid. EPA or DHA in the liver polar lipid were increased with levels of dietary EPA or DHA, respectively, whereas those in nonpolar lipid were not affected by the dietary levels of EPA and/or DHA. These finding indicate that either of the EPA or DHA is essential for normal growth of Korean rockfish, and the essential fatty acid requirement is
of EPA and/or DHA in the diet. DHA is superior to EPA as essential fatty acid, and the dietary EPA/DHA ratio of less than 1.0 may be adequate for normal growth of Korean rockfish fed a diet enough n-3HUFA (EPA and DHA).
Differences in in vivo Fluorescence Yield for Netplankton and Nanoplankton Size Classes
MOON Chang-Ho ; LEE Seung-Yong ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 727~732
In the South Sea of Korea, in vivo fluorescence intensity (IVF) and extractable chlorophyll a concentration were measured to determine whether there was significant defference in in vivo fluorescence per unit chlorophyll a (R) between netplankton and nanoplankton size classes (less than
). IVF and chlorophyll a were linearly related for both size classes, but R's were significantly different between two size classes. The R of nanoplankton was about 7 times higher than that of netplankton. Therefore, the size dependency of R must be taken into consideration when size fraction of phytoplankton biomass is determined from the measurements of in vivo fluorescence intensity.
Long-Period Sea Level Variations around Korea, Japan, and Russia
PANG Ig-Chan ; OH Im-Sang ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 733~753
Monthly mean sea levels from 103 tidal stations in Korea, Japan, and Russia are analyzed to study long-period sea level variations. Barometric adjustment are done for all the sea level data, using monthly air pressures at sea levels from meteorological stations near tidal stations. Seasonal variation is dominant in most of study area. It is the largest in the coasts along the Tsushima Current, and the smallest in the Russian coasts. The cross-correlations of seasonal variations are very high between the coasts along the Tsushima Current. In these marginal seas, seasonal variations seem to be related with the Tsushima Current. The phase of seasonal variations is generally getting late from south to north, and also from west to east. On the other hand, longer-period variations(longer than seasonal variation) have the largest amplitudes and the earliest phases in the coasts along the Pacific Ocean, which shows that they propagate from the Pacific Ocean. Shorter-period variations (shorter than seasonal variation) have generally lower cross correlations. Their values do not show any dictinct difference between areas, and show a common tendency that they are inversely proportional to distance. It implies that the shorter period waves are generated all over the study areas, and propagate in all the directions with faster dissipations. The trends of sea levels in the study area are generally negative in the coasts along the Pacific Ocean and positive in the other areas during the period of 1965 to 1985. By the trends, the mean volume transport between Cheju and Sasebo can be reduced by about 1 Sv during the period. The seasonal variation of volume transport obtained by sea level difference is about 2 Sv in the Korea Strait. The values are comparable to previous reports.
Formation and Variation of Turbidity Maximum in the Neuse River Estuary, North Carolina, U.S.A.
KIM Seok-Yun ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 754~770
Suspended sediment distribution and water column processes in the upper Neuse River estuary, North Carolina, were monitored monthly from February 1988 through February 1989, in order to identify the turbidity maximum, to determine its temporal and spatial variation under changing conditions(freshwater runoff, wind, and tide). During most of the observation periods a weak turbidity maximum, associated with the estuarine circulation processes, developed at a flow convergence zone, near the upstream limit of salt intrusion. No turbidity maximum was found when the water column was vertically homogeneous with respect to salinity and when there was no consistent upstream bottom flow. Annual migration of the turbidity maximum, accompanied by migration of salt intrusion, was over 20 km of the upper estuary. Due to the coincidence of dominant wind direction(NE-SW) with the main orientation of the Pamlico-Neuse system, wind played the dominant role in dynamics of the turbidity maximum by influencing the degree of salinity stratification and the extent and strength of estuarine circulation. Tidal effects on the sediment dynamics were negligible.
Use of Beam Transmissometer as an Indirect Measure of Suspended Sediment Concentration in the Estuarine Environment: Application and Problems
KIM Seok-Yun ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 771~781
Monthly measurements made at 15 stations along the axis of the upper Neuse River estuary show a highly variable degree of correlation between concentration of suspended particulate material (SPM) and attenuation coefficient (c) of light as measured by transmissometer. Coefficients of determination along transect lines ranged from
and calibration slopes ranged from
. When examined on a station-by-station basis, coefficients of determination ranged from
and calibration slopes ranged from
. Surface calibrations made at individual stations over the full 13-month period were the most consistent of all observations and were considerably better than calibrations made using all of the stations on a given day. Organic content, which can dominate the suspended sediment load during some months, does not appear to explain the variations in reliability of the calibrations. However, an abundance of large aggregates with time-varying size and shape distributions may be partly responsible for variations in optical properties of the sediments, and thus may confound the relationship between SPM and c in the Neuse River estuary Time-varying calibrations to account for non-negligible changes in optical properties may not suffice in complex estuarine environments where the in situ particle dynamics are poorly understood. However, the best use of Beam Transmissometer will continue to be for applications such as detecting water-column events or for use in situations where wide error bars in establishing SPM concentrations are acceptable.
Free Oscillation Analysis in the Coastal Area using Integrated Finite Difference Method
LEE Byung-Gul ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 782~786
Integrated finite difference method (IFDM) is used to solve one dimensional free oscillation problem in the coastal area. To evaluate the solution accuracy of IFDM in free oscillation analysis, two finite difference equations based on area discretization method and point discretization method are derived from the governing equations of free oscillation, respectively. The difference equations are transformed into a generalized eigenvalue problem, respectively. A numerical example is presented, for which the analytical solution is available, for comparing IFDM to conventional finite difference equation (CFDM), qualitatively. The eigenvalue matrices are solved by sub-space iteration method. The numerical results of the two methods are in good agreement with analytical ones, however, IFDM yields better solution than CFDM in lower modes because IFDM only includes first order differential operator in finite difference equation by Green's theorem. From these results, it is concluded that IFDM is useful for the free oscillation analysis in the coastal area.
An Optimization Approach to the Wind-driven Ocean Circulation Model
KIM Jong-Kyu ; RYU Cheong-Ro ; CHANG Sun-duck ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 787~793
It has been demonstrated for the finite-difference ocean circulation model that the problem of uncertain forcing and input data can be tackled with an optimization techniques. The uncertainty problem in interesting flow properties is exploring a finite difference ocean circulation model due to the uncertainty in the driving boundary conditions. The mathematical procedure is based upon optimization method by the conjugate gradient method using the simulated data and a simple barotropic model. An example for the ocean circulation model is discussed in which wind forcing and the steady-state circulation are determined from a simulated stream function.
Two Copepod Species of Nothobomolochus (Poecilostomatoida, Bomolochidae) Parasitic on Marine Fishes from Yosu Bay, Korea
CHOI Sang-Duk ; HONG Sung Yun ; SUH Hae-Lip ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 794~802
Two species of the parasitic copepod were recovered from two Korean fishes, Lateolabrax japonicus (Cuvier and Valenciennes) and Pampus argenteus (Euphrasen) taken from Yosu Bay, Korea. The present paper contains redescription of two species of Nothobomolochus of Bomolochidae. Both species, N. lateolabracis (Yamaguti and Yamasu) and N. triceros (Basset-Smith), are newly recorded from the Korean water. N. lateolabracis and N. triceros were found on the L. japonicus and P. argenteus, respectively.
A Taxonomic Revision of the Family Cynoglossidae (Pisces, Pleuronectiformes) from Korea
KIM Ik-Soo ; CHOI Youn ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 803~813
Eight species belonging to three genera in the family Cynoglossidae of Korea are reviewed and provisional keys to species and genera are provided, with synonyms and their distribution. Among them six species collected from 1992 to 1993 are redescribed and figured in the present study; Cynoglossus interruptus, C. joyneri, C. robustus, C. semilaevis, C. abbreviatus and Paraplagusia japonica. Three species of Areliscus rhomaleus. A. trigrammus, and A. hollandi were considered as synonyms of Cynoglossus semilaevis, C. abbreviatus and C. gracilis respectively. Many tonguefishes inhabit commonly in the western and southern coast of Korea. And although Cynoglossus interruptus and C. abbreviatus are restricted only in the southern coast, C. semilaevis in the western and southwestern coast of Korea, Paraplagusia japonica occurs widely along all of the coasts of Korea.
Synopsis of Family Mugilidae (Perciformes) from Korea
LEE Chung-Lyul ; JOO Dong-Soo ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 814~824
The taxonomic revision of the family Mugilidae from Korea was made based on the fish specimens collected from the coasts of the Korea from July 1990 to July 1994. The family Mugilidae was classified into three species belonging to two genera: Mugil cephalus, Liza haematocheilus and Liza carinatus. Previousely Mugil japonicus reported as a species from Korea was confirmed into junior synonym of Mugil cephalus. based on the external and internal morphological characters. A new key to the genera and species of family Mugilidae was proposed and described their distribution in Korea.
Water Quality of the Yellow Sea in Summer
YOU Sun-Jae ; KIM Jong-Gu ; KIM Gwang-Su ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 825~835
The distributions of temperature, salinity, dissolved oxygen, chemical oxygen demand, dissolved inorganic nitrogen and phosphate in the Yellow Sea are described from data collected in June and July, 1994. Based on the observations of water temperature and salinity, the fresh waters originated from the Changjiang River were found to affect the waters adjacent to Cheju Island. In the light of the distributions of dissolved oxygen and chemical oxygen demand, the western part of the Yellow Sea was worse in water quality than the eastern part. Based on data of nutrients, eutrophication indices of the western part were higher than those of the eastern part in summer. It is concluded that the western part of the Yellow Sea appeared to receive high pollution loads from rivers and was evaluated to have high potentiality of red tide occurrence.
A Record of the Yellow Croaker Pseudosciaena polyactis in the East Sea
SUH Hae-Lip ; PARK Kwang-Jae ; CHA Seong Sig ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 836~838
Developments and Trends in Fisheries Processing: Value-Added Product Development and Total Resource Utilization
Meyers Samuel P. ;
Korean Journal of Fisheries and Aquatic Sciences, volume 27, issue 6, 1994, Pages 839~846
Changing concepts in fishery science increasingly are recognizing depletion of traditional stocks, utilization of alternate(non-traditional) species, demand for high quality products, and a total resource utilization approach. Innovative practices are occurring in fisheries processing wherein solid and liquid discharges are no longer treated as 'waste,' but rather as valuable feedstocks for recovery of a variety of value-added ('value enhanced') by-products. Among these are protein hydrolysates, soluble proteins and amino acids, proteolytic enzymes, flavor and flavor extracts, pigments, and biopolymers such as chitosan. Properties and applications of this deacetylated derivative of chitin are noted. Crustacean processing by-products are discussed in terms of their serving as materials for generation of natural flavors and flavor extracts, and products such as fish sauces using contemporary enzymatic techniques. Various food and feed applications of fisheries processing by-products are illustrated with increased usage seen in formulated diets for an expanding aquaculture market. Examples are given of aquaculture becoming increasingly significant in global fisheries resource projections. Critical issues in the international seafood industry Include those of seafood quality, processing quality assurance (HACCP), and recognition of the nutritional and health-related properties of fisheries products. A variety of current seafood processing research is discussed, including that of alternate fish species for surimi manufacture and formulation of value-added seafood products from crawfish and blue crab processing operations. Increasing emphasis is being placed on international aspects of global fisheries and the role of aquaculture in such considerations. Coupled with the need for the aquatic food industry to develop innovative seafood products for the 21st century is that of total resource utilization. Contemporary approaches in seafood processing recognize the need to discard the traditional concept of processing 'waste' and adapt a more realistic, and economically sound, approach of usable by-products for food and feed application. For example, in a period of declining natural fishery resources it is no longer feasible to discard fish frames following fillet removal when a significant amount of residual valuable flesh is present that can be readily recovered and properly utilized in a variety of mince-based formulated seafood products.