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Volume 25, Issue 4
Displaying 1-11 of 11 articles from this issue
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Tadashi Inada, J.A.F. Garrick1979 Volume 25 Issue 4 Pages 235-243
Published: February 15, 1979
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSRhinochimaera pacifica previously known only from Japan and Peru is reported and described from 23 New Zealand specimens taken on the Chatham Rise, Challenger Plateau and east of Stewart Island in depths of 750-1110 m. Comparison with R.atlantica, the other nominal species, shows that R.pacifica differs only in its higher number of denticulations on the upper caudal margin of males (34-69 in New Zealand and Japanese specimens, 25-30 in R.atlantica).View full abstractDownload PDF (1585K) -
C.E. Dawson, Fujio Yasuda, Chifumi Imai1979 Volume 25 Issue 4 Pages 244-250
Published: February 15, 1979
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSElongate dermal appendages occurring on dorsum of brood-pouch and/or planktonic young of the Indo-Pacific pipefishes Yozia bicoarctata, Y.tigris and Y.intermedia are described and illustrated.Functionally, these are considered to be buoyant processes which serve in floatation and distribution of planktonic young.Comments on the closely related Trachyrhamphus serratus are included.View full abstractDownload PDF (6030K) -
Kazuo Mashiko1979 Volume 25 Issue 4 Pages 251-258
Published: February 15, 1979
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSNocturnal action of the catfish, Pseudobagrus aurantiacus, was investigated with an actograph recording the movements into and out of a nest-hole in an aquarium. The nocturnal action commenced in dependence on fall of external light intensity in the evening, and the action commencement climaxed at 10-3 order in lux at water temperatures between 11°and 20°C, and at 10-2 order in lux at between 25°and 30°C. From the results of feeding experiments, the remarkably strict correspondence of nocturnal action commence-ment with the change of external light intensity is suggested to be concerned with a high degree of feeding intensity at that time. The catfish became active without periodicity for a whole day of continuous darkness (lower than 2×10-4 lux), and action was constantly depressed with the continuous illumination (1000 lux). Light intensity of the surroundings is considered to be a key factor in switching the activity of this catfish between day and night.View full abstractDownload PDF (1324K) -
Ikuo K. Takeuchi, Takao Kajishima1979 Volume 25 Issue 4 Pages 259-265
Published: February 15, 1979
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSThe ultrastructure of the xanthophores of larval goldfish at various develop-mental stages was examined, with special reference to the appearance and accumulation of lipid particles in the xanthophores. In xanthophores of the hatching larva, numerous pterinosomes were present but no lipid particles were observed.The lipid particles, homogeneously electron-dense and 60-80 mμ in diameter, appeared in the neighborhood of the nuclei of the xanthophores in larvae 5 days after hatching.They formed con-glomerates of varying sizes.The conglomerates of lipid particles increased in size along with the development of the larvae, and a considerable number of lipid particles gradually become distributed freely into the dendritic portion of the xanthophores.The mechanism of accumulation of these lipid particles in the xanthophores is discussed in relation to those of other cell types on which earlier reports have been made.View full abstractDownload PDF (16283K) -
Shinya Masuda, Takakazu Ozawa1979 Volume 25 Issue 4 Pages 266-268
Published: February 15, 1979
Released on J-STAGE: June 28, 2010
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Stomiatoidei, MelanostomiatidaeHiroaki Somiya1979 Volume 25 Issue 4 Pages 269-272
Published: February 15, 1979
Released on J-STAGE: June 28, 2010
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Toru Taniuchi1979 Volume 25 Issue 4 Pages 273-277
Published: February 15, 1979
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESS -
Tsutomu Kanayama, Shuka Maruyama1979 Volume 25 Issue 4 Pages 278-282
Published: February 15, 1979
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESS -
Takakazu Ozawa, Seiichi Matsui1979 Volume 25 Issue 4 Pages 283-285
Published: February 15, 1979
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESS -
Takao Arai1979 Volume 25 Issue 4 Pages 286-290
Published: February 15, 1979
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESS -
Masao Katayama1979 Volume 25 Issue 4 Pages 291-293
Published: February 15, 1979
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESS
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