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Volume 66 (2000)
- Issue 6 Pages 969-
- Issue 5 Pages 791-
- Issue 4 Pages 603-
- Issue 3 Pages 372-
- Issue 2 Pages 195-
- Issue 1 Pages 1-
Volume 66, Issue 3
Displaying 1-19 of 19 articles from this issue
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Yuzuru Suzuki2000 Volume 66 Issue 3 Pages 372-375
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
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Masaru Nakamura2000 Volume 66 Issue 3 Pages 376-379
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
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Yoshiaki Itoh2000 Volume 66 Issue 3 Pages 380-383
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
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Koji Muramoto2000 Volume 66 Issue 3 Pages 384-387
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
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Tetsuya Nishikawa, Yutaka Hori, Satoshi Nagai, Kazutaka Miyahara, Yoic ...2000 Volume 66 Issue 3 Pages 388-394
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
JOURNAL FREE ACCESSThe relationship between the bloom of Coscinodiscus wailesii and water quality or meteorological factors was examined in Harima-nada between April 1995 and March 1998, by referring to the Meteorological Agency's data. Monthly changes in water quality factors and dominant phytoplankton showed that the bloom of C. wailesii occurred from November to February under conditions of high salinity, DIN (dissolved inorganic nitrogen), DIP(dissolved inorganic phosphorus), DSi (dissolved inorganic silicon), and DIN×DIP, and low water temperature, DIN : DIP ratio (ca. 10≥) and TN×TP (total nitrogen×total phosphorus) : DIN×DIP ratio. The comparison of each average water quality factor among the dominant phytoplankton from autumn to winter showed that C. wailesii occurred in water with high DIN, DIP, DSi, and DIN×DIP, and a low TN×TP : DIN×DIP ratio, whereas Pseudonitzschia spp. occurred in water with a high TN×TP : DIN×DIP ratio compared to other dominant phytoplankton.View full abstractDownload PDF (963K) -
Yoichi Yoshida2000 Volume 66 Issue 3 Pages 395-411
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
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Akihiro Okamura, Tomoko Utoh, Huan Zhang, Yoshiaki Yamada, Noriyuki Ho ...2000 Volume 66 Issue 3 Pages 412-416
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
JOURNAL FREE ACCESSSeasonal changes in gonadal development were investigated in the conger eel Conger myriaster, collected at a fixed station in the Pacific coast of Atsumi peninsula, central Japan, from November 1996 to September 1998. Out of 188 individuals collected, 182 were female and there were six individuals, the sex of which were unknown. Female individuals caught from March to August were immature (gonadosomatic index (GSI)<1) with the oocytes at the chromatin nucleolus or the perinucleolus stages. From September to January, some relatively matured individuals (GSI : 2-4) appeared at the station, with the oocytes at the oil droplet or the primary yolk globule stages however, they were not caught after February. These results suggest that female C. myriaster on this coast gradually grow up from summer to winter, then the relatively matured larger individuals migrate to elsewhere in early spring.View full abstractDownload PDF (775K) -
Shusaku Takagi, Hidetsuyo Hosokawa, Sadao Shimeno, Masaharu Ukawa2000 Volume 66 Issue 3 Pages 417-427
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
JOURNAL FREE ACCESSThe utilization of corn gluten meal (CGM) as a substitute for fish meal (FM) in red sea bream Pagrus major diet was evaluated with yearlings and juveniles. Yearling fish weighing 280g on average, and juvenile fish weighing 53g on average, were fed diets containing 0-52% CGM (replacing 0-100% of FM) for 232 days and 40 days, respectively. In yearling fish, growth perfomance was not affected by inclusion of up to 36% CGM, but it decreased with increase of CGM above 47%. Similar feed conversion was observed in the fish fed diets with less than 47% CGM to the control fish fed the CGM-free diet, but it was inferior in the fish fed a diet with 52% CGM and without FM. In juvenile fish, the growth and feed conversion together with feed intake were decreased with increase of CGM in diet, although they were not affected by the inclusion of 15% CGM. In both the fish, apparent protein digestibilities of the diets were not affected (90-95%) by CGM content in the diets. These results indicate that FM in diet for red sea bream could be replaced up to 70% by the inclusion of 36% CGM in yearling fish, and could be replaced up to 30% by the inclusion of 15% CGM in juvenile fish, without supplementation of essential amino acids.View full abstractDownload PDF (1226K) -
Shusaku Takagi, Hidetsuyo Hosokawa, Sadao Shimeno, Masaharu Ukawa2000 Volume 66 Issue 3 Pages 428-438
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
JOURNAL FREE ACCESSThe utilization of poultry by-product meal (PBM) as a substitute for fish meal (FM) in red sea bream Pagrus major diet was evaluated with yearlings and juveniles. Yearling fish weighing 280g on average, and juvenile fish weighing 54g on average were fed diets containing 0-59% PBM (replacing 0-100% of FM) for 232 days and 60 days, respectively. In yearling fish, the growth perfomance and feed conversion of fish fed diets containing up to 59% PBM were superior or similar to the control fish fed a PBM-free diet. In juvenile fish, the growth performance of fish fed diets containing up to 41% PBM was similar to that of the control fish, but that in fish fed diets containing more than 53% PBM was lower. Feed conversion was similar or slightly decreased by dietary inclusion of up to 41% PBM, but it was inferior in diets with more than 53% PBM. These results indicate that FM in red sea bream diet could be completely replaced by the inclusion of 59% PBM in yearling fish, and could be replaced up to 70% by the inclusion of 41% PBM in juvenile fish, without supplementation of essential amino acids.View full abstractDownload PDF (1222K) -
Martasuganda Sulaeman, Tatsuro Matsuoka, Gunzo Kawamura2000 Volume 66 Issue 3 Pages 439-445
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
JOURNAL FREE ACCESSTank experiments were conducted to examine the effects of hang-in ratios on the size-selectivity of gillnets. Nets of three hang-in ratios, 0.3, 0.5 and 0.7 were tested for carp Cyprinus carpio and rainbow trout Oncorhynchus mykiss. The series of catch ratios in length classes were calibrated to relative ones to exclude the catch efficiency factor that was independent from fish size but different amongst hang-in ratios. The relative catch ratios were calculated as best fitted to the selectivity curves obtained by Kawamura and Matsuoka's method. For both species, the selectivity characters assessed on the relative catch ratios, such as the maximum-selectivity lengths, selective length ranges and slopes of the curves obtained from wedged fish agreed with each other well among the three hang-in ratios. Selective length ranges were expanded toward either greater or smaller sizes of fish as the numbers of entangled catch increased when a hang-in ratio was greater. It was concluded that hang-in ratios did not affect the wedge function of a mesh and, consequently, the wedged-catch selectivity was not affected, although the hang-in ratios affected the catch efficiency because the numbers of meshes in a unit area of net panel were changed.View full abstractDownload PDF (942K) -
Masato Aritaki, Shigenori Suzuki, Kenichi Watanabe2000 Volume 66 Issue 3 Pages 446-453
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
JOURNAL FREE ACCESSMorphological development and growth of larval and early juvenile berfin flounder Verasper moseri were examined in a laboratory reared series. Based on morphological characteristics, 9 developmental stages (A-I) were first determined for the present species. The newly hatched larvae were 3.65-4.78mm in total length (TL), with unpigmented eyes, unformed mouths, and closed anuses (stage A). On 10 days after hatching, the mouth opened at 5.80-6.36mm TL (stage C). Within 25 days after hatching, notochord flexion began at 7.39-8.87mm in TL (stage E), and completed at 9.1-12.4mm TL on 25-30 days after hatching. The metamorphosis characterized by the eye migration from left to right side of the body began at the larvae of 11.1mm TL (stage G), and completed at 18.4mm TL on 40-60 days after hatching (stage I). In those stages, melanophores were densely distributed on whole body. The weak preopercular spines appeared at 6.64-7.77mm TL on 20 days after hatching (stage D), and disappeared at 11.1-17.1mm TL 40-45 days after hatching (stage G). Turning points on relative growth were concentrated in stages at mouth opening, notochord flexion and metamorphosis. These corresponded to behavioral turning phases such as swimming and feeding. There was no significant morphological difference between the present reared larvae and wild larvae reported in a previous paper.View full abstractDownload PDF (1128K) -
Koichi Kataura, Hidekazu Kiuchi, Yoshinori Kaneko, Sizuo Hatayama, Syo ...2000 Volume 66 Issue 3 Pages 454-461
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
JOURNAL FREE ACCESSThe protective effect of oligosugar alcohols against thermal denaturation of myofibrillar protein from horse mackerel was investigated as a function of the molecular weight and the number of OH group of the sugar alcohols, and its relation to sweetness was discussed. The results obtained were as follows; 1) The protective effect was studied as E or E'=⊿ log KD/C(M or %), where the KD is the first order rate constant for thermal inactivation of Ca-ATPase with or without varied concentrations (C) of sugar alcohol. The E (M-1) generally increased and E' (%-1) decreased with the increase in the molecular weight as well as the number of OH groups of the sugar alcohol. 2) The protective effect given with a branched oligosugar alcohol was similar to that of linear oligosugar alcohol having approximately the same molecular weight. 3) There was a good correlation between the E value and the logarithmic value of the molecular weight or the number of OH group of the sugar alcohols. 4) Dependencies of the E' value or the sweetness level on the logarithmic value of the number of OH group were close to each other. 5) A good correlation between the level of sweetness by sugar alcohols and the E' value of the same sugar alcohols was therefore demonstrated. It was thus found that the dependency of the E' and the sweetness on the logarithmic number of OH group of sugar alcohol was very similar.View full abstractDownload PDF (981K) -
Tsuyoshi Koriyama, Tomoko Kohata, Katsuko Watanabe, Hiroki Abe2000 Volume 66 Issue 3 Pages 462-468
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
JOURNAL FREE ACCESSTo elucidate the difference of the taste between lean muscle Akami and fatty muscle Toro of bigeye tuna Thunnus obesus, chemical components, such as proximate, fat, fatty acid, and extractive components were compared. The effects of tuna oil addition on the taste of 80% ethanol extracts were also investigated by sensory evaluation. Fat content was lower in Akami (0.5%) than in Toro (6.6-7.2%). Large amounts of anserine and histidine were detected in all muscles, but anserine content was higher in Akami and histidine content was higher in Toro. By sensory evaluation, no difference was observed in whole taste intensity and the taste profile between Akami and Toro extracts. Addition of tuna oil to the extracts as emulsion, however, decreased sourness significantly and tended to increase sweetness and decrease bitterness. The pattern similarity analyses revealed sweetness was the factor which was most contributable to the change of the taste.View full abstractDownload PDF (1047K) -
Yasuyuki Tsukamasa, Yasuyoshi Miyake, Masashi Ando, Yasuo Makinodan2000 Volume 66 Issue 3 Pages 469-474
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
JOURNAL FREE ACCESSTo clarify the effect of heat-stability of actomyosin (AM) on the setting induced by endogenous transglutaminase (TGase), AM prepared from carp which is classified as a hard setting group was pre-heated at 40°C until 90 min and then incubated with TGase extracted from the same individual at 25°C. The rates of reduction in the amount of myosin heavy chain (HC) monomer and of formation of HC polymers increased with an extension in heat treatment of AM. However, the polymerization rate of HC monomer was slightly reduced by the addition of 5% sucrose which is a protectant against thermal denaturation of AM at pre-heating at 40°C. Since heat-denaturation of AM promoted polymerization of HC monomer, heat-stability of AM is suggested to relate to setting induced by TGase.View full abstractDownload PDF (895K) -
Minoru Kimura, Masanao Narita, Takuma Imamura, Hideki Ushio, Hideaki Y ...2000 Volume 66 Issue 3 Pages 475-480
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
JOURNAL FREE ACCESSScallop adductor muscle packed with an atmosphere of 100%O2, 80%O2 and 20%CO2, 60%O2 and 40%CO2, and air, and stored at 5°C. During storage, changes in the frequency of specimens rigor, total viable counts, and contents of ATP, its related compounds, octopine, L-arginine, and D-Lactic acid were examined. The growth of bacteria in the samples was inhibited in the atmosphere containing CO2 gas at the ratio of 20% or 40%. However the quality of scallop adductor muscle could not be preserved due to the rapid development of rigor. In the sample packed with 100%O2, it was remarkable that the decrease in ATP and pH, the development of rigor, the increase in octopine and moreover the increase in total viable counts was prolonged for nearly two days, compared with the sample packed with air. From these results, it was elucidated that packaging with 100%O2 gas was a practical method and achived the prolongation for nearly two days in shelf life of the scallop adductor muscle.View full abstractDownload PDF (724K) -
Atsuko Yamaguchi, Yoichi Abe, Makoto Ishioroshi, Kunihiko Samejima, Ke ...2000 Volume 66 Issue 3 Pages 481-488
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
JOURNAL FREE ACCESSThe frozen surimis were prepared on addition of 8% sorbitol (S) or 0.25% sodium polyphosphate (P), or their combination (SP), and stored at -25°C for 8 months. The quality of the frozen surimis was evaluated by determining breaking strength (BS), breaking strain (bs), and gel stiffness (GS) of the two-step heated gels. The results obtained were as follows : (1) The quality of the gel formed from the surimi with SP was much superior than those of the others. Even if the P was mixed at a grinding step with NaCl, the quality of the gel formed was compatible to that from the surimi with SP. (2) In particular, the bs of the gel from the surimi with SP was of much higher value, although the effect of P reduced when the gel was formed from frozen surimi with S after long-term storage. (3) The linear relations between the BS and the GS (=BS/bs) were very close between the two types of gels formed from the surimis with SP, while that of the gel formed from the surimi with S alone was clearly different. These results indicated that a role of the P in the frozen surimi was to improve the quality of the two-step heated gel by a reinforcement of bs.View full abstractDownload PDF (993K) -
Shota Tanimoto, Takashi Okazaki, Kyozo Morimoto, Tatsuo Yoneda2000 Volume 66 Issue 3 Pages 489-492
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
JOURNAL FREE ACCESSWhite spots were observed on the surface of the mantle muscle of European common cuttlefish during freezing storage. To investigate the cause of production of the white spots, several constituents of the spots were analyzed. Octopine, whose content was 42.7%, was proved to be the main component. The total amount of protein and peptide was 25.4%, so they were the secondary major component. Water and ash content were 7.0% and 5.4%, respectively. On the other hand, microscopic studies proved that the white spots were crystaline material like needles.View full abstractDownload PDF (715K) -
Izuru Kakuta2000 Volume 66 Issue 3 Pages 493-494
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
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Izuru Kakuta2000 Volume 66 Issue 3 Pages 495-496
Published: May 15, 2000
Released on J-STAGE: February 01, 2008
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