All issues
Volume 42 (1995)
- Issue 3-4 Pages 231-
- Issue 2 Pages 115-
- Issue 1 Pages 1-
Volume 42, Issue 3-4
Displaying 1-15 of 15 articles from this issue
- |<
- <
- 1
- >
- >|
-
John E. McCosker, N.V. Parin1995 Volume 42 Issue 3-4 Pages 231-235
Published: November 25, 1995
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSAbstract A new species of deepwater eastern Pacific worm-eel, Muraenichthys profundorum, subgen Scolecenchelys, is described from a specimen trawled at 310m on the Nazca Ridge. It is the deepe capture of any known Muraenichthys. The new species is distinguished from its closest relatives in havin more vertebrae and slightly different body and head morphometry. The distribution of eastern Pacif Muraenichthys is the result of eastward dispersal along the southeastern margin of the Indo-west Pacif Plate. Taxonomic actions concerning the species of Muraenichthys are revieweView full abstractDownload PDF (761K) -
Masaki Miya, Motoomi Yamaguchi, Muneo Okiyama1995 Volume 42 Issue 3-4 Pages 237-248
Published: November 25, 1995
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSMidwater fishes were collected by oblique hauls between the surface and an average depth of 1290m, using a 10-ft Isaacs-Kidd midwater trawl, at seven stations off the Pacific coast of Boso Peninsula, central Japan. A total of 1860 fishes (excluding larvae), representing 19 families and 66 species, were collected, with a mean abundance and biomass of 565 inds and 278g (wet weight) per 100m2 of ocean surface in the upper 1000m water column, respectively. Gonostomatids were most numerically abundant (75%), followed by myctophids (20%), melamphaids (1.4%) and sternoptychids (0.9%), while myctophids dominated in total biomass (47%), followed by gonostomatids (42%), melamphaids (3.1%) and bathylagids (3.1%). Of these, the gonostomatid, Cyclothone atraria, ranked top in both total abundance (52%) and biomass (26%). Zoogeographic grouping of the 66 species on the basis of centers of distributions/abundance in relation to water masses indicated that tropical-subtropical species were the most numerous overall (43 spp.), followed by wide-ranging (10 spp.), subarctic (6 spp.), pseudoceanic (6 spp.) and transitional species (1 sp.). Except for the transitional species, all zoogeographic groups were represented by at least one of the six most abundant species. Size-frequency distributions and other available information suggested that the study area was located at an interface between peripheral breeding populations of the tropical-subtropical, subarctic and pseudoceanic species, being a consequence of both the adjacent land mass and hydrographic conditions of the area, where cold, less saline waters originating from the subarctic region advected below the more saline, warm Kuroshio current flowing northeastward along the peninsula.View full abstractDownload PDF (1864K) -
Waikhom Vishwanath, Wahengbam Manojkumar1995 Volume 42 Issue 3-4 Pages 249-253
Published: November 25, 1995
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSFishes of the genus Psilorhynchus McClelland inhabit lowland to high gradient streams of the Gangetic, Brahmaputra and Chindwin drainages of south Asia. The fishes are small, subcylindrical, with a flattened ventral surface and have small scales and 4-10 undivided pectoral fin rays. Three species of the genus occur in Manipur, of which P. microphthalmus sp.nov. is newly described. It differs from the Ganga-Brahmaputra form, P. homaloptera, in its narrower body, shorter head, smaller eyes and fewer lateral line and predorsal scales. A key to the identification of Manipur Psilorhynchus is provided.View full abstractDownload PDF (1996K) -
S.V.S. Rana, Rekha Singh, Seema Verma1995 Volume 42 Issue 3-4 Pages 255-259
Published: November 25, 1995
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSSimultaneous lipid peroxidation and oxidative stress were examined in the liver, kidney, brain and gills of a fresh-water fish, Channa punctatus, after 30 days treatment with inorganic mercury. Although longer exposure caused greater oxidative stress, the degree/rate of injury varied in different organs. Short exposures resulted in increased reduced glutathione (GSH), but longer exposures reduced in all the tissues. The results suggested that the rate of lipid peroxidation did not strictly correspond to oxidative stress. Time dependent effects may represent an early biochemical response, although, the presence of some labile GSH-dependent factors may provide a protective mechanism.View full abstractDownload PDF (633K) -
Makoto Sakurai, Akinobu Nakazono1995 Volume 42 Issue 3-4 Pages 261-267
Published: November 25, 1995
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDaily twilight migrations of the Japanese surfperch, Neoditrema ransonneti, a temperate rocky reef inhabitant, are described on the basis of studies around Fukudomari Harbor, Saiki Bay, Kyushu. Migrations occurred from late August through January, being the time of year of high N. ransonneti abundance in nearshore waters. At dusk, fish moved from coastal rocky reefs, where they had been diurnally active, to the harbor, either solitarily or in schools. Movement into the harbor began on average, 30.4min. before sunset, the last arrival taking place 10.2min. after sunset. During nighttime, the fish remained in the harbor, subsequently. The beginning their migration to open waters some 27.6min. before sunrise. Migration routes were established up to at least 100 to 150m from the harbor . The sequence of migratory behavior at the entrance of the harbor was categorized according to certain behavioral events, such as migration in schools and migration in procession (a long dense school). Each behavioral event began and ceased with precise timing relative to sunset or sunrise, the effect of variations in underwater illumination on each event being small. Practically all of the individuals (approximately 48, 000) observed around the harbor were considered to migrate.View full abstractDownload PDF (2723K) -
Kunio Sasaki1995 Volume 42 Issue 3-4 Pages 269-275
Published: November 25, 1995
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSTwo new species of the sciaenid genus Atrobucca are described from the Bay of Bengal; A. antonbruun, distributed from Burma to the east coast of India and A. bengalensis from Sri Lanka. Both species differ from all other congeners in having weakly differentiated teeth on the lower jaw . A. antonbruun is distinguished from, A. bengalensis by having usually X first dorsal fin spines (vs IX), 27-29 dorsal fin soft rays (vs 30-31), usually 17-18 pectoral fin rays (vs 19), usually 13-14 lower gill rakers (vs 11), cycloid scales on the anterior half of the body (vs ctenoid), and swimbladder appendages strongly enveloping the bladder (vs weakly enveloping).View full abstractDownload PDF (1028K) -
Hisashi Imamura, Hitoshi Ida, Jack T. Moyer1995 Volume 42 Issue 3-4 Pages 277-283
Published: November 25, 1995
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSA platycephalid species, Thysanophrys otaitensis is redescribed on the basis of specime collected from Papua New Guinea and Japan. The name is available satisfying current nomenclatur requirements, and corresponds to a species of Thysanophrys with papillae on lip margins. T. otaitensis is distinguished from Platycephalus fuscus in having fewer lateral line scales, gill rakers, and dorsal and anal fin rays. T. otaitensis is confirmed as a senior synonym of P. malayanus, P. variolosus and T. papillolabi It differs from other species of the genus in having weakly developed sensory tubes from the suborbit bones and preopercle, as well as a small head with a wide interorbit and papillae on the lips, but absent from the eye.View full abstractDownload PDF (3605K) -
Ik-Soo Kim, Wan-Ok Lee1995 Volume 42 Issue 3-4 Pages 285-290
Published: November 25, 1995
Released on J-STAGE: February 23, 2011
JOURNAL FREE ACCESSA new cobitid, Niwaella brevifasciata is described from 17 specimens collected in small strea near the southwestern coast of Korea. It is distinguishable from congeners by the following characte lower sides of body with 13 to 19 short vertical bars; mouth with relatively longer barbels an well-developed mental lobes; dorsal fin origin more anterior, between 55.3% and 60.3% SL; vertebr number fewer, 43 to 45; branched anal fin rays fewer, 4. A key to species of Niwaella and a bri discussion of the evolutionary history of the genus are included.View full abstractDownload PDF (2497K) -
Mukwaya Gashagaza, Kazuhiro Nakaya, Tetsu Sato1995 Volume 42 Issue 3-4 Pages 291-302
Published: November 25, 1995
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSSeveral species of small-sized cichlid fishes inhabit the shell-bed area at Rumonge, Burundi, in the northeastern part of Lake Tanganyika. Some of them are very similar in morphology to the known species occurring in rocky and sandy habitats, but their bodies are unusually small. Investigations of three such small-sized cichlids were made from taxonomic point of view, and it was concluded that they represent small morphs of Altolamprologus compressiceps, Lamprologus callipterus and Neolamprologus mondabu. Their small bodies and some minor morphological differences were interpreted as adaptations to the utilization of empty shells as brooding sites and shelters in the shell-bed environment.View full abstractDownload PDF (5216K) -
Yuji Ikeda, Tetsuji Nakabo, Wataru Hiramatsu1995 Volume 42 Issue 3-4 Pages 303-310
Published: November 25, 1995
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSA rare gobiid fish, Vanderhorstia macropteryx, is redescribed, based on a newly-designated neotype and 11 other specimens collected from southern Japan. The species is characterized by 7-18 predorsal scales, a longitudinal yellow line on the middle of the cheek, an orange line on the membrane above the maxilla, an oblique yellow line on the occiput behind the eye, many yellow spots on the first and second dorsal fins and upper halves of the caudal fin and body, and 3 yellow transverse lines plus 4 obscure brown blotches on flank. The species which is associated with snapping shrimps.View full abstractDownload PDF (1067K) -
Terry J. Donaldson1995 Volume 42 Issue 3-4 Pages 311-319
Published: November 25, 1995
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSCourtship and spawning behaviors for the Western Pacific wrasses Cheilinus fasciatus, Choerodon fasciatus, Cirrhilabrus cyanopleura, C. katherinae, Oxycheilinus unifasciatus, Pteragogus cryptus and Thalassoma amblycephalum are described. Pair spawning was observed in six species and group spawning in T. amblycephalum. Mating systems included haremic mating groups, promiscuity, lek-like behavior leading to group spawning, and facultative monogamy. Observations of some courtship behavior of two additional species, Cheilinus undulatus and Epibulus insidiator, indicated parading by mating group members in the former, and patrolling by males in the latter. The distinct behavioral patterns observed may have use in future phylogenetic analyses and in determining paths of evolution in the behavior of these fishes.View full abstractDownload PDF (1373K) -
Katsutoshi Watanabe1995 Volume 42 Issue 3-4 Pages 321-324
Published: November 25, 1995
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESS -
Kazuhiro Nakaya, Hideki Nakano1995 Volume 42 Issue 3-4 Pages 325-328
Published: November 25, 1995
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESS -
Akihisa Iwata, Sang-Rin Jeon1995 Volume 42 Issue 3-4 Pages 329-333
Published: November 25, 1995
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESS -
1995 Volume 42 Issue 3-4 Pages 352
Published: 1995
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (24K)
- |<
- <
- 1
- >
- >|