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Volume 1 (1966)
- Issue 4 Pages 157-
- Issue 3 Pages 107-
- Issue 2 Pages 53-
- Issue 1 Pages 1-
Volume 1, Issue 4
Displaying 1-9 of 9 articles from this issue
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Kanji TACHIBANA1966 Volume 1 Issue 4 Pages 157-165
Published: December 25, 1966
Released on J-STAGE: February 07, 2008
JOURNAL FREE ACCESSThe application of two new methods devised for recording easily the physiological phenomena of an intact insect in a mechano- and electrocardiogram was studied. These two methods-the recording method based on the principle of photoelectric effect, and the leading one of action currents associated with heartbeat-seemed to be useful for studying the effects of insecticidal, electrical, chemical and other treatments on the heartbeat of insects. As the first step toward a wider application of these methods to the samples under various conditions, studies on the healthy insects were required to obtain a standard cardiogram. For this purpose, a systematization of heartbeat of healthy individuals was made here using these methods electrocardiographically. And the data and discussions were presented on the following subjects; elimination of interferences on recording, the leading method of action current, the setting point of needle electrode, the time constant and amplitude, cycle, continuous grade (renzoku-do) and form of cardiogram were investigated.View full abstractDownload PDF (772K) -
Toshihiko HUKUHARA, Yoko HASHIMOTO1966 Volume 1 Issue 4 Pages 166-172
Published: December 25, 1966
Released on J-STAGE: February 07, 2008
JOURNAL FREE ACCESSIn silkworm larvae infected with TIV, the iridescence was observed in the silk gland, dermal gland, muscle, dorsal vessel and trachea. Histological sections showed the presence of patches of material rich in deoxyribounucleic acid in the cytoplasm of cells of the silk gland, dermal gland, epidermis, fat body, muscle and tracheal epithelium. Electron micrographs of ultrathin sections of the epidermal cells and dermal grands revealed the cytoplasm of these cells to contain masses of electron-dense material and virus particles. In the silkworm pupae infected with TIV, the iridescence was observed in the muscle, salivary gland, rectal sac, ovarian tube, oviduct, receptaculum seminis, mucous gland, glandula receptaculi and vas deferens. TIV had no antigenic relationship to the nuclear-and cytoplasmic-polyhedrosis viruses of the silkworm.View full abstractDownload PDF (3036K) -
Takeshi KANEKO, Kazuo TAKAGI1966 Volume 1 Issue 4 Pages 173-176
Published: December 25, 1966
Released on J-STAGE: February 07, 2008
JOURNAL FREE ACCESSBoth the tea root borer, Xyleborus germanus and tea twig borer, Xyleborus compactus reproduced normally under the artificial exchanges of their symbiotic ambrosia fungi. These two symbiotic fungi belonging to two different beetles seemed to be alike morphologically and physiologically except that the optimum temperatures of sporulation in cultivated spores were different.View full abstractDownload PDF (735K) -
Akio OTAKE1966 Volume 1 Issue 4 Pages 177-188
Published: December 25, 1966
Released on J-STAGE: February 07, 2008
JOURNAL FREE ACCESSNumerical records of Chilo suppressalis which were caught by light traps located in the Hokuriku district were studied from the viewpoint of population ecology. On massive occurrences, the species often assumed gradation-like processes of multiplication as pointed out by ISHIKURA (1951), although there were also cases of the burst type of outbreak defined by MIYASHITA (1963). In this district, there was neither distinct tendency for simultaneous occurrence of outbreaks nor tendency for centrifugal progress of outbreaks. There was a pretty conspicuous tendency in the western part of the district that the long-term population trends in the first and second generations were similar to each other in a same locality. In some light-trap stations, long successions of extraordinarily high or low female ratios were observed. It was characteristic of these cases that the successions appeared restricted to either of the two generations. This seemed to suggest any long-term sex-related influences of environment exerted on either generation alone.View full abstractDownload PDF (955K) -
Kozaburo OZAKI1966 Volume 1 Issue 4 Pages 189-196
Published: December 25, 1966
Released on J-STAGE: February 07, 2008
JOURNAL FREE ACCESSThe local variabilities of resistance to malathion and methyl parathion were studied with green rice leafhopper colonies collected from various areas in Kanto, Chugoku and Shikoku districts of Japan. Low level of resistance to malathion was found in some colonies of Tochigi, Yamaguchi, Kochi, Ehime, Kagawa and Tokushima Prefectures. While, to methyl parathion low levels of resistance were found in some colonies of Kochi, Ehime, Kagawa, Tokushima, Okayama, Hiroshima and Shimane Prefectures. Close relationship was obtained between the levels of resistance in the leafhoppers to malathion and amounts of malathion previously applied in paddy field. But other organophosphorus insecticides might have more or less relations to malathion resistance. Levels of resistance of leafhoppers to methyl parathion were considered to depend on total amounts of organophosphorus insecticides (including methyl parathion) rather than methyl parathion only.View full abstractDownload PDF (621K) -
Hiroshi SUGIYAMA1966 Volume 1 Issue 4 Pages 197-199
Published: December 25, 1966
Released on J-STAGE: February 07, 2008
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Jun MITSUHASHI1966 Volume 1 Issue 4 Pages 199-201
Published: December 25, 1966
Released on J-STAGE: February 07, 2008
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Narao FUKUHARA1966 Volume 1 Issue 4 Pages 201-203
Published: December 25, 1966
Released on J-STAGE: February 07, 2008
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Kazutoshi NAKASONO1966 Volume 1 Issue 4 Pages 203-205
Published: December 25, 1966
Released on J-STAGE: February 07, 2008
JOURNAL FREE ACCESSDownload PDF (1126K)
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