NIPPON SUISAN GAKKAISHI

Seasonal Change in Stomach Contents of Silvergray Seaperch Malakichthys griseus in Kagoshima Bay, Southern Japan

Takaki Iwakawa, Takakazu Ozawa

2001 Volume 67 Issue 1 Pages 3-9
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.3

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Stomach contents of silvergray seaperch Malakichthys griseus were examined for 151 specimens (66-178mm SL) collected in Kagoshima Bay. Prey organisms were identified into 22 families belonging to 10 orders. The Calanoida copepods were most speciose and abundant. Sizes of all prey species or genera increased with growth of the fish. In the specimens of 101-120mm SL, which were collected in all seasons, stomach content weight was not statistically different among the four seasons with the exception of lower weight in spring. The dominant prey was benthos followed by zooplankters in spring, while zooplankters dominated in other three seasons. Fish increased in the stomachs with progress of seasons from spring.

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Maturation Cycle and Batch Fecundity of the Bullet Tuna Auxis rochei off Cape Ashizuri, Southwestern Japan

Yoshio Niiya

2001 Volume 67 Issue 1 Pages 10-16
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.10

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Changes in ovarian development of the wild bullet tuna, which were collected off Cape Ashizuri during the daytime (0500-1500h) at two-hour intervals June 12-14, 1997, were examined to understand its ovarian maturation cycle and batch fecundity. The changes in diameter of the most advanced oocyte group, GSI, and occurrence of egg-ovulation in the ovarian cavity showed that hydration (oocyte maturation) occurred between 1100 and 1300h, ovulation at around 1500h, and thereafter, eggs were spawned. Hydrated ovary collected at 1100h had three clutches of oocytes, their modes of diameter were distributed at around 0.29&acd;0.3mm, 0.41&acd;0.42mm, and 0.6-0.81mm, respectively. It was estimated that the oocyte group with 0.29&acd;0.3mm diameter developed to 0.41&acd;0.42mm in diameter after 24 hours, and finally reached the maturation stage of 0.6-0.81mm in diameter after 48 hours. The batch fecundity (BF) was calculated from the size of the single clutch of hydrated oocytes, and related to the body weight (RBW) excluding both gonad and stomach content weight as the following formula, BF=222 RBW+672 (r²=0.2506, n=52).

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Identification of Chub and Spotted Mackerels with Mitochondorial Cytochrome b Gene and Its Application to Respective Pelagic Eggs Fixed with Formalin

Keijiro Sezaki, Yasuko Kuboshima, Isamu Mitani, Atsushi Fukui, Shugo W ...

2001 Volume 67 Issue 1 Pages 17-22
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.17

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Mitochondrial cytochrome b genes were amplified by PCR using the total DNA as a template from muscle tissues of adult chub mackerel Scomber japonicus and spotted mackerel S. australasicus, and their nucleotide sequences determined. The full length of the cytochrome b gene consisted of 1, 140 nucleotides irrespective of the two species, where 16 species-specific variations were observed. Among various restriction enzymes which recognize the cytochrome b genes from the two fish species, MvaI was specific to the gene of S. japonicus and MboI to that of S. australasicus, with both enzymes producing two fragments. Such species-specific fragmentation patterns were applicable to identification of formalin-fixed pelagic eggs from the two species, which was impossible with morphological characteristics.

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A Tagging Method for the Sea Urchin Strongylocentrotus nudus (A. Agassiz) with Coded Wire Tag

Minoru Sano, Tetsuo Seki, Michio Omori, Kazuya Taniguchi

2001 Volume 67 Issue 1 Pages 23-29
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.23

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Usefulness of Coded Wire Tag made of stainless steel for the sea urchin Strongylocentrotus nudus (A. Agassiz) was examined by rearing experiments. Tags were inserted in the peripharyngeal cavity of sea urchins. Effects of tagging on the growth and mortality were not found. The lost tags in % for 7 days increased for the first 14 days after tagging, showing size-dependent difference, and thereafter abruptly declined and kept a low value after 21st day, without showing difference among size class. Estimation of the % of lost tags for any time became possible using a regression equation of the accumulated % of lost tags on the elapsed day from the 21st day after tagging.

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Estimation of the Population Size in Number of Ayu, Plecoglossus altivelis altivelis, by the DeLury's Method in the Chikuma River

Satoshi Yamamoto, Yoshiharu Matsumiya

2001 Volume 67 Issue 1 Pages 30-34
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.30

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The initial population number of ayu fish at the beginning of the fishing season and catchability coefficient estimated using DeLury's method and the stocking effect was examined in the Chikuma River. The accumulative catch and the CPUE of the Tomozuri angling fishery observed by hourly sighting were used for estimation. Since the number of the released fingerlings was known, the survival rates until the beginning of the fishing season were calculated to be 13.0% in 1997 and 36.9% in 1998. The results showed that DeLury's method was applicable to the assessment of the ayu population.

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Color Discrimination Conditioning in Two Octopus Octopus aegina and O. vulgaris

Gunzo Kawamura, Kazuo Nobutoki, Kazuhiko Anraku, Yoshito Tanaka, Masar ...

2001 Volume 67 Issue 1 Pages 35-39
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.35

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In order to investigate the color vision in Octopoda, color discrimination conditioning and transposition tests were done with two octopuses, Octopus aegina and O. vulgaris in tanks. The animals were trained to discriminate by touch between blue (25mm in diameter, reflectance λ_max=460nm) and white or light shaded balls (negative balls) for a food reward. The balls were presented simultaneously in front of a shelter wherein each animal resided. After the completion of the conditioning, the negative balls were substituted with ones of different shades of gray (G1 to G5 in the order of reflectance), and transposition tests were done to examine the possibility of darkness-based discrimination. In the transposition tests, O. aegina showed correct responses at 70-100% to the blue ball irrespective of the shades of grey employed, implying the possession of color vision. O. vulgaris changed the choosing response with the shades of gray employed, indicating the darkness-based choosing and lack of color vision; biased to blue at G1, random at G2, biased to gray at G3 and G4 which were darker than the blue, and biased to blue at G5 which was much darker than the blue.

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Development of the Digestive System and Metamorphosis Relating Hormones in Spotted Halibut Larvae and Early Juveniles

Yuji Hotta, Masato Aritaki, Kengo Ohta, Masatomo Tagawa, Masaru Tanaka

2001 Volume 67 Issue 1 Pages 40-48
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.40

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In 1997 and 1998, spotted halibut Verasper variegatus were experimentally reared from eggs through early juveniles at the Miyako Station of Japan Sea-Farming Association in Iwate Prefecture. The primitive digestive system of V. variegatus differentiated at the C stage at which eyes pigmented and the mouth opened. The gastric gland and pyloric caeca first appeared at the E stage, initiation phase of metamorphosis. The number of gastric glands and the volume of stomach lumen increased markedly as metamorphosis proceeded. Intestinal epithelial cell height increased from the C stage to the F stage, early stage of metamorphosis. Tissue concentrations of cortisol in larvae increased markedly to a peak of 48.7ng/g BW just before initiation of metamorphosis, then decreased during metamorphosis. Thyroxine (T₄) levels increased gradually during the early metamorphic stage, reaching peak levels at metamorphic climax, then declined by approximately 50%. Triiodothyronine (T₃) remained at low levels throughout metamorphosis. Although these hormone patterns in V. variegatus were similar to those in japanese flounder Paralichthys olivaceus, the adult-like digestive system of V. variegatus developed earlier than that of Japanese flounder. This precocity seems to relate to some ecological characteristics, such as settling behavior, in V. variegatus.

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Diving Behavior of Lipped Hard-lure Changed by the Body Shape in the Retrieving Process

Tomohiro Miki, Nozomu Daida, Hiroshi Inada, Takuhiro Sakai, Haruyuki K ...

2001 Volume 67 Issue 1 Pages 49-57
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.49

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The flume tank and the field experiments were conducted to clarify the relationship between the body shape of floating hard-lure and the diving behavior in the retrieving process. Experimental lure-bodies were made up of the same rectangular shape (Lb=65mm, Lw=15mm) in the plane view and of different heights (13mm≤Lh≤65mm) of elliptic shape in the side view. Trial lures with the same lip were used in both the experiments at velocities of 40, 60 and 80cm/s in the flow or in the retrieve. Diving depth, attack angle and tension on a towing line of the lure were measured in the tank test. The lure behavior was also recorded by video camera from the top and the side of flume tank. Diving pattern of the lures was investigated with 4 transducers of fish finder within 20m retrieving course in the field experiment. As increasing the ratio of axial length κ=Lh/Lb as a parameter for the elliptic lateral shape of the body, the horizontal vibrating angle β of the lure was enlarged and the diving depth was shallower. It was indicated from these results that the diving behavior of the lure could be controlled by the value of body shape κ.

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Morphological Development and Growth of Laboratory-reared Spotted Halibut Verasper variegatus

Masato Aritaki, Kengo Ohta, Yuuji Hotta, Masaru Tanaka

2001 Volume 67 Issue 1 Pages 58-66
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.58

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Morphological development and somatic growth were examined for laboratory-reared spotted halibut, Verasper variegatus, from newly-hatched larvae to early stage of juveniles. Nine developmental stages (A-I) were recognized based on morphological characteristics. Newly hatched larvae were measured 3.8-4.2mm in total length (TL), with unpigmented eyes, unopened mouth and anus (stage A). On 25 days after hatching (DAH), notochord flexion began at 9.4-10.5mm TL (stage E), and was completed at 10.7-14.1mm TL on 30 DHA (stage F). The migration of the left eye over the dorsal median line from a symmetrical position occurred at 13.8mm TL on 35 DAH (stage G), and was completely translocated to one side at 16.1mm TL on 50 DAH (stage I). Pigmentation of melanophores on the body and fins became prominent as larval development proceeded, being densely distributed on whole body at stage H. A few posterior and anterior preopercular spins appeared at 8.4mm TL and disappeared at 18.0mm TL. The flexion points in the relative growth of body parts were located at the stages of mouth opening, initiation of notochord flexion at early and mid phases of metamorphosis. When compared with related species barfine flounder V. moseri, distribution of melanopores exclusive of stages D and H, and TLs at stages D to G, and proportions of some body parts were different, though general developmental pattern and morphological characteristics were similar.

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Subpopulations of Pacific Cod Gadus macrocephalus off the Pacific Coast of Northern Japan

Yasuji Kanno, Yuji Ueda, Takashi Matsuishi

2001 Volume 67 Issue 1 Pages 67-77
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.67

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Density of the fish shoal and vertebral counts of Pacific cod at various locations in the Sea of Japan and in the Pacific Ocean off the Tohoku District, and in the Pacific Ocean off Hokkaido were studied. Off the Pacific coast, there were three high density areas of fish shoal, i. e., the waters off Sanriku in the Tohoku district, the waters off Cape Esan and the waters off Kushiro in Hokkaido. In the Sea of Japan, there were two high density areas of fish shoal, i. e., the waters off Aomori and Akita prefectures and the waters off Yamagata prefecture. In addition, factor analysis of the monthly catch per seine net showed that the fish in the eastern waters off Cape Erimo, those in the western waters off Cape Erimo, and those in the waters off Sanriku each have peculiar trends of change in the CPUE (catch/net) among monthly catches. Furthermore, the statistical analysis of the vertebral counts showed that the Pacific cod from the eastern waters off Cape Erimo had significantly higher vertebral counts than the Pacific cod in other areas. The results of the present research and the information on spawning grounds previously reported, suggest that there are three subpopulations of Pacific cod in the present research area in the Pacific Ocean, i. e., a subpopulation in the eastern waters off Cape Erimo, a subpopulation off Cape Esan and a subpopulation off Sanriku District. Further studies are needed to determine the locations of subpopulations of this species in the Sea of Japan.

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Purification and Properties of Lipase from Tilapia Intestine : Digestive Enzyme of Tilapia VI

Akiko Taniguchi, Katsumi Takano, Ikuzo Kamoi

2001 Volume 67 Issue 1 Pages 78-84
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.78

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Lipase of the intestine of Tilapia nilotica was purified by ammonium sulfate precipitation, followed by ion-exchange chromatography (DEAE-cellulose), chromatofocusing (Polyexchanger PBE 94), and gel filtration (Sephadex G-100). The lipase was found to be a single band when examined by electrophoresis. The specific activity of the purified enzyme was 177 times higher than that of the crude extract. The lipase had a molecular weight of 46, 000, showed the highest activity at pH7.5 and 35°C, and was stable at pH6.5-8.5 and below 40°C. The Km of the enzyme for olive oil was calculated to be 0.7mM. Its activity was inhibited by Cu²⁺, Cd²⁺, Ni²⁺, Hg²⁺, PCMB, and CH₂ICOOH. This enzyme specifically digested Tributyrin and Tricaproin, whereas it digested 1, 2-diolein and 1-monoolein more than 1, 3-diolein and 2-monoolein. The enzyme well decomposed soybean oil and coconut oil.

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The Effect of Addition of Protease Inhibitor from Marine Bacterium on the Strength of Gel Formation of Sardine Meat Gel (Kamaboko)

Chiaki Imada, Shinichiro Nishimoto, Saburo Hara

2001 Volume 67 Issue 1 Pages 85-89
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.85

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The effect of crude protease inhibitors of marine bacterial origin on the formation of gels from various fishes such as krile, sardine and squid meat paste (surimi) was investigated. Among them, crude protease from sardine was strongly inhibited followed by krile whereas no inhibition was observed in squid. Various naturally occurring protease inhibitors were mixed with bacterial ones and the inhibitory effect on the crude protease from sardine was also determined. The most effective one was leupeptin from terrestrial actinomycete. The crude inhibitors of microbial origin were frantionated by DEAE-cellulofine column chromatography, resulting in two active franctions. The fraction eluted first, marinostatin (simple peptide), had an inhibitory activity against serine protease whereas the second one, monastatin (glycoprotein), had an inhibitory activity against cysteine protease. The inhibitory effect of these inhibitors on the formation of gel was performed. The elasticity and jelly strength of gel from sardine surimi was effective in the presence of monastatin whereas no such effect was observed in the presence of marinostatin, suggesting that the former one might be applicable to cooked fish meat gel (Kamaboko).

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Possible Utilization of the Pearl Oyster Pinctada fucata Glycogen as a Cosmetic Material

Satoshi Kanoh, Mayumi Aoyama, Mie Watanabe, Maki Mae, Keiji Takagi, Ke ...

2001 Volume 67 Issue 1 Pages 90-95
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.90

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The utilization of the pearl oyster Pinctada fucata glycogen as a cosmetic material was examined, taking the cell proliferation rate, collagen synthetic ability, and recovery from ultraviolet damage for normal human dermal fibroblasts NHDF (NB) and epidermal keratinocytes NHEK (B) as parameters. The cell proliferation rate and collagen synthetic ability were increased by 11-13% and 29-61%, respectively, when crude glycogen from the pearl oyster was supplied to the culture medium for fibroblasts at concentrations of 0.01-0.2%. When β-particles prepared from the pearl oyster crude glycogen were added to the culture medium for fibroblasts at a concentration of 0.1%, the cell proliferation rate and collagen synthetic ability increased by 15% and 38%, respectively. In addition, the recovery from ultraviolet damage for epidermal keratinocytes was increased by 15-21%, when the crude glycogen from the pearl oyster was added at concentrations of 0.05-0.25% to the culture medium. These results suggest that the crude glycogen from pearl oyster is a promising candidate as a cosmetic material.

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Purification and Properties of Lipase from Tilapia Stomach : Digestive Enzyme of Tilapia VII

Akiko Taniguchi, Katsumi Takano, Ikuzo Kamoi

2001 Volume 67 Issue 1 Pages 96-101
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.96

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Lipase of the stomach of Tilapia nilotica was purified by ammonium sulfate precipitation, followed by chromatofocusing (Polyexchanger PBE 94), and gel filtration (Sephadex G-100). The lipase was found to be a single band when examined by electrophoresis. The specific activity of the purified enzyme was 19 times higher than that of the crude extract. The lipase had a molecular weight of 54, 000, showed the optimum activity at pH6.5 and 40°C, and was stable at pH5.0-7.0 and below 50°C. The Km of the enzyme for olive oil was calculated to be 0.6mM. Its activity was inhibited by Cu²⁺, Cd²⁺, Pb²⁺, Hg²⁺, Ni²⁺, PCMB, and EDTA. This enzyme hydrolyzed triacylglycerol more than diacylglycerol and monoacylglycerol. The enzyme hydrolyzed soybean oil well.

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Possibility of Identifying Chub Mackerel and Spotted Mackerel by Measuring Diameter of Mackerel Eggs

Hiroshi Nishida, Tokio Wada, Yoshioki Oozeki, Keijiro Sezaki, Mami Sai ...

2001 Volume 67 Issue 1 Pages 102-104
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.102

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Population Increase of the Fluvial Japanese Charr Salvelinus leucomaenis after Fishing Prohibition

Tomoyuki Nakamura, Takashi Maruyama, Seiichi Watanabe

2001 Volume 67 Issue 1 Pages 105-107
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.105

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Taxonomy and Distribution of Congrid eel (I. Fisheries biology)(Fisheries Biology and Fisheries of White-spotted Conger-eel Conger myriaster)

Kiyotaka Hatooka

2001 Volume 67 Issue 1 Pages 109-110
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.109

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Early Life History of Conger myriaster (I. Fisheries biology)(Fisheries Biology and Fisheries of White-spotted Conger-eel Conger myriaster)

Noritaka Mochioka

2001 Volume 67 Issue 1 Pages 111-112
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.111

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Growth and Feeding Behavior of Conger myriaster (I. Fisheries biology)(Fisheries Biology and Fisheries of White-spotted Conger-eel Conger myriaster)

Yasunobu Nabeshima

2001 Volume 67 Issue 1 Pages 113-114
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.113

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Maturation and Spawning of Conger myriaster (I. Fisheries biology)(Fisheries Biology and Fisheries of White-spotted Conger-eel Conger myriaster)

Tomoko Utoh

2001 Volume 67 Issue 1 Pages 115-116
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.115

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Population Structure of Conger myriaster (I. Fisheries biology)(Fisheries Biology and Fisheries of White-spotted Conger-eel Conger myriaster)

Katsumi Tsukamoto

2001 Volume 67 Issue 1 Pages 117-118
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.117

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Conger-eel Fisheries and Fisheries Management in Sendai Bay (II. Conger-eel Fisheries and Fisheries Management)(Fisheries Biology and Fisheries of White-spotted Conger-eel Conger myriaster)

Mitsuhiro Saeki

2001 Volume 67 Issue 1 Pages 119-120
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.119

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Conger-eel Fisheries and Fisheries Management in Tokyo Bay (II. Conger-eel Fisheries and Fisheries Management)(Fisheries Biology and Fisheries of White-spotted Conger-eel Conger myriaster)

Takamichi Shimizu

2001 Volume 67 Issue 1 Pages 121-122
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.121

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Conger-eel Fisheries and Fisheries Management in the Eastern Seto Inland Sea (II. Conger-eel Fisheries and Fisheries Management)(Fisheries Biology and Fisheries of White-spotted Conger-eel Conger myriaster)

Minoru Tanda

2001 Volume 67 Issue 1 Pages 123-124
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.123

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Conger-eel Fisheries and Fisheries Resources in the East China Sea (II. Conger-eel Fisheries and Fisheries Management)(Fisheries Biology and Fisheries of White-spotted Conger-eel Conger myriaster)

Muneharu Tokimura

2001 Volume 67 Issue 1 Pages 125-126
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.125

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Conger-eel Fisheries in Korea (II. Conger-eel Fisheries and Fisheries Management)(Fisheries Biology and Fisheries of White-spotted Conger-eel Conger myriaster)

Chang Doo Park

2001 Volume 67 Issue 1 Pages 127-128
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.127

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Catch Performance of Conger-eel Fisheries and Fisheries Management (II. Conger-eel Fisheries and Fisheries Management)(Fisheries Biology and Fisheries of White-spotted Conger-eel Conger myriaster)

Tadashi Tokai

2001 Volume 67 Issue 1 Pages 129-130
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.129

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Trap (I. The Capture Process and Aggregation-Distribution Behavior of Aquatic Animals)(Capture Process Research and Prospects for the Development of Selective Fishing Gear and Techniques)

Takeshi Yamane

2001 Volume 67 Issue 1 Pages 132-133
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.132

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Set-net (I. The Capture Process and Aggregation-Distribution Behavior of Aquatic Animals)(Capture Process Research and Prospects for the Development of Selective Fishing Gear and Techniques)

Seiji Akiyama, Takafumi Arimoto

2001 Volume 67 Issue 1 Pages 134-135
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.134

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Purse Seine (I. The Capture Process and Aggregation-Distribution Behavior of Aquatic Animals)(Capture Process Research and Prospects for the Development of Selective Fishing Gear and Techniques)

Eiichi Hasegawa

2001 Volume 67 Issue 1 Pages 136-137
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.136

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Gillnet (I. The Capture Process and Aggregation-Distribution Behavior of Aquatic Animals)(Capture Process Research and Prospects for the Development of Selective Fishing Gear and Techniques)

Yasuzumi Fujimori

2001 Volume 67 Issue 1 Pages 138-139
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.138

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Trawl (II. The Capture Process with Emphasis on Entrapment Method)(Capture Process Research and Prospects for the Development of Selective Fishing Gear and Techniques)

Kaoru Fujita, Yoshiki Matsushita

2001 Volume 67 Issue 1 Pages 140-141
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.140

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Trap (II. The Capture Process with Emphasis on Entrapment Method)(Capture Process Research and Prospects for the Development of Selective Fishing Gear and Techniques)

Tomonori Hiraishi

2001 Volume 67 Issue 1 Pages 142
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.142

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Set-net (II. The Capture Process with Emphasis on Entrapment Method)(Capture Process Research and Prospects for the Development of Selective Fishing Gear and Techniques)

Yoichiro Ueno

2001 Volume 67 Issue 1 Pages 144-145
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.144

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Purse Seine (II. The Capture Process with Emphasis on Entrapment Method)(Capture Process Research and Prospects for the Development of Selective Fishing Gear and Techniques)

Hiroshi Inada

2001 Volume 67 Issue 1 Pages 146-147
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.146

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Nettinggear (III. The Capture Process and Conditions for its Success)(Capture Process Research and Prospects for the Development of Selective Fishing Gear and Techniques)

Tatsuro Matsuoka

2001 Volume 67 Issue 1 Pages 148-149
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.148

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Angling Gear (III. The Capture Process and Conditions for its Success)(Capture Process Research and Prospects for the Development of Selective Fishing Gear and Techniques)

Nariharu Yamashita

2001 Volume 67 Issue 1 Pages 150-151
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.150

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Visual Sense (IV. The Capture Process in Relation to Behavioral Physiology)(Capture Process Research and Prospects for the Development of Selective Fishing Gear and Techniques)

Kazuhiko Anraku

2001 Volume 67 Issue 1 Pages 152-153
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.152

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Stress (IV. The Capture Process in Relation to Behavioral Physiology)(Capture Process Research and Prospects for the Development of Selective Fishing Gear and Techniques)

Takahito Kojima

2001 Volume 67 Issue 1 Pages 154-155
Published: January 15, 2001
Released on J-STAGE: February 01, 2008

DOIhttps://doi.org/10.2331/suisan.67.154

JOURNAL FREE ACCESS

Download PDF (418K)

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