巻号一覧
7 巻 (1972)
- 4 号 p. 181-
- 3 号 p. 99-
- 2 号 p. 43-
- 1 号 p. 1-
7 巻, 2 号
選択された号の論文の9件中1～9を表示しています
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Hitoshi WATANABE, Yoshinori TANADA1972 年 7 巻 2 号 p. 43-51
発行日: 1972/06/25
公開日: 2008/02/07
ジャーナル フリーWhen the larvae of Pseudaletica unipuncta were reared at 37°C after exposure to a nuclear-polyhedrosis virus, either by per os or by intrahemocoelic inoculation, they did not succumb to virus infection. Histopathologically, however, a small number of cells of the fat body, hypodermis and trachea were infected with virus and contained virus particles but no polyhedra. Autoradiographic results revealed that viral DNA synthesis occurred in a few cells of virus-exposed larvae held at 37°C, but the polyhedron-protein synthesis did not occur.These results indicated that high temperature (37°C) may prevent the lethal infection of virus-exposed larvae not only by reducing the mechanism of adsorption and/or penetration of the virus into the cell, but also suppressing the development of polyhedra.抄録全体を表示PDF形式でダウンロード (2463K) -
Yoshio HIRAI1972 年 7 巻 2 号 p. 52-60
発行日: 1972/06/25
公開日: 2008/02/07
ジャーナル フリーThe role of temperature as a time cue for the eclosion of adult Hyphantria cunea DRURY and its interaction with photoperiodic stimulus were experimentally analyzed. Experiments with various combinations of thermoperiods and photoperiods indicated that the timing of eclosion was determined not only by the light-off stimulus, but also was strongly affected by the stimulus of a drop in temperature. Further experiments showed that a change in temperature as well as in light, can act as a "phasing" factor in the endogenous circadian periodicity. However, the peak of eclosion occurred before the stimulus by a drop in temperature, while it occurred after the stimulus by light-off. This suggested the difference in the mode of action between these two stimuli. When animals were experimentally forced to make a choice between these two stimuli, it was revealed that a drop in temperature had stronger effect as the time cue for adult eclosion than light-off. Eclosion of the overwintered generation before dusk seemed to be caused by the drop in temperature at this season.抄録全体を表示PDF形式でダウンロード (635K) -
Hirosi SUGIYAMA, Hajime SHIGEMATSU1972 年 7 巻 2 号 p. 61-70
発行日: 1972/06/25
公開日: 2008/02/07
ジャーナル フリー^<14>C-Carbaryl administered orally was quickly distributed in all tissues and converted into a hydroxy-metabolite, 2-hydroxy 1-naphthyl N-methylcarbamate. The metabolism of carbaryl was essentially similar at both high and low doses. Two radioactive peaks were observed in the tissues after treatment with the insecticide; the first peak corresponded to the carbaryl initially taken up and the second peak was recognized as its major matabolite. The rate of disappearance of carbaryl and of the formation of its metabolites differed according to the dose of the insecticide. The fat body formed more quickly the hydroxymetabolite than other tissues. In the case of larvae treated with a non-lethal dose, the time of recovery from toxic symptoms coincided with that of the disappearance of carbaryl from the tissues.At this time, the major metabolite reached maximum levels.抄録全体を表示PDF形式でダウンロード (739K) -
Noriaki AGUI, Yasuo KIMURA, Masatsugu FUKAYA1972 年 7 巻 2 号 p. 71-78
発行日: 1972/06/25
公開日: 2008/02/07
ジャーナル フリーThe prothoracic glands taken from 6-day-old larvae in the final instar of the cabbage armyworm (Mamestra brassicae L) were well maintained for considerably long term in vitro.It was ascertained that these prothoracic glands relased hormonal agent which induces the moulting of the integument of the diapausing rice stem borer (Chilo suppressalis WALKER)larvae in media such as CSM-2F, Grace's medium and Ringer-Tyrode's solution. The prothoracic glands from the diapausing pupae of the cabbage armyworm, however, did not show any activity to initiate the moulting of Chilo-integuments. The homogenates of active prothoracic glands did not indicate the moulting function in vito. The hormonal agent released from the active prothoracic glands was acetone soluble and heat stable (90°C, 10min). The implication of these results were discussed.抄録全体を表示PDF形式でダウンロード (805K) -
KOJI HORI1972 年 7 巻 2 号 p. 79-82
発行日: 1972/06/25
公開日: 2008/02/07
ジャーナル フリーThe bug, Lygus disponsi LINNAVUORI (Hemiptera : Miridae), could not grow to adult on a control diet (containing no carbohydrates), whereas it grew to adult on sucrose and starch diets. The rate of growth of the bugs on the starch diet was about equal to that on the sucrose diet. These facts indicate that carbohydrates are essential for their growth and that soluble starch has the same nutritive value as sucrose. It is probable that the bug fully utilized starch or polysaccharides in soluble form which may be contained abundantly in its host plant tissue, on which it is fond of feeding.抄録全体を表示PDF形式でダウンロード (391K) -
Takafumi SASABA, Keizi KIRITANI1972 年 7 巻 2 号 p. 83-93
発行日: 1972/06/25
公開日: 2008/02/07
ジャーナル フリーA superficial comparison of the numbers in a population killed by different mortality factors is by itself misleading. This arises from the fact that each mortality factor seldom acts alone byt has interactions with each other either sequentially or contemporaneously.Since we have no information on the relationship among mortality factors within the egg stage of the green rice leafhopper, several assumptions about their modes of interactions were made to measure the amount of mortality that each factor would cause if it were operating alone.In every hypothetical case, the proportion of eggs parasitized increased with the increase of egg density. This suggests that the egg parasite operated density-dependently against the host density. This tendency was quite evident in the early and mid-season paddy. From field and laboratory experiments it follows that the egg parasite was able to respond positively to host density.抄録全体を表示PDF形式でダウンロード (830K) -
S.C. SAXENA, Kunda SARIN1972 年 7 巻 2 号 p. 94
発行日: 1972/06/25
公開日: 2008/02/07
ジャーナル フリーPDF形式でダウンロード (281K) -
Michiko KASHIWAGI, Syunro UTIDA1972 年 7 巻 2 号 p. 95-96
発行日: 1972/06/25
公開日: 2008/02/07
ジャーナル フリーPDF形式でダウンロード (307K) -
Ichiro SHIBUYA, Shigemi YAGI1972 年 7 巻 2 号 p. 97-98
発行日: 1972/06/25
公開日: 2008/02/07
ジャーナル フリーPDF形式でダウンロード (461K)
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