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Volume 14 (1963)
- Issue 4 Pages 187-
- Issue 3 Pages 131-
- Issue 2 Pages 69-
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Volume 14, Issue 3
Displaying 1-11 of 11 articles from this issue
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Article type: Cover
1963 Volume 14 Issue 3 Pages Cover6-
Published: October 31, 1963
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSDownload PDF (39K) -
Rokuro Kano, Gordon FieldArticle type: Article
1963 Volume 14 Issue 3 Pages 131-137
Published: October 31, 1963
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSDuring the period from 25 May to 5 June 1962, one of the authors, Rokuro Kano, made a survey of medically important flies on Okinawa Main Island of the Ryukyu Islands. This work resulted in a collection of more than 2, 000 fly specimens. Some years before this (December 1952-May 1953), Dr. Tokuichi Shiraki surveyed both agriculturally and medically important flies on the Ryukyu Islands and also collected many fly specimens. The authors examined fly specimens of both surveys in detail, and found one new genus and three new species of sarcophagid flies among them. Regarding the generic names of these species, the authors followed the opinion of Dr. B. B. Rohdendorf and Dr. H. S. Lopes.View full abstractDownload PDF (890K) -
Zenemon OnoArticle type: Article
1963 Volume 14 Issue 3 Pages 138-142
Published: October 31, 1963
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSMorphological differences between E. gallinacea (specimens from Kenya) and E. murina were studied. The result was summarized in Table 1. Collecting records of E. murina from rats in Japan were described. "E. gallinacea" has been believed to be common on rats in southwestern part of Japan, but the writer has the opinion that the species recorded as E. gallinacea in this country may be corrected as E. murina.View full abstractDownload PDF (463K) -
Tozo KandaArticle type: Article
1963 Volume 14 Issue 3 Pages 143-151
Published: October 31, 1963
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESS1. Comparative biometrical studies were made on the 4th instar larvae of colonies of Culex pipiens s. l. collected at several localities from southern to northern Japan. The investigations were started by examining the differences between a laboratory colony of pallens-form (DE-colony) originated from Tokyo and two colonies of fatigans-form collected from endemic areas of bancroftian filariasis in Amami (KO-colony) and in Ryukyu (TA-colony). Further observations were made to accumulate the same line of characters pertaining their hybrids or individuals of colonies collected from other localities. 2. The above three colonies which represented pallens and fatigans forms were found to differ in the distributions of values of siphonal index or in the number of pairs of siphonal hairs as had previously been pointed out, but better defined differences could be detected in the number of branches of the first and the second subventral siphonal hair tufts or in the relative length of these hairs to the width of siphon. The number of the branches in fatigans form was mostly 6 to 8 while that in pallens form was usually 2 or 3. The relative hair length to the width of siphon (HL/SW) was 0.85 in KO-colony and 1.08 in TA-colony but was 1.42 in DE-colony in the average. These values were intermediate for the hybrid colonies between the two forms. 3. Since the above three colonies were bred under the same condition for a number of generations in the laboratory, the above characters seemed to be genetically defined. In the selective breedings of individuals with 8 branched one from TA-colony, the percentage of larvae provided with this character increased from 20.7 in parent generation to 50.0 in F_1, 81.5 in F_2 and 78.2 in F_3. 4. In the comparative biometrical observations with a number of colonies collected from southern to northern Japan, gradual increase in the values of the siphonal index and of the number of branches of siphonal hair tufts, as well as the gradual decrease in the relative hair length were seen as the localities of collection moved towards the south. The only exception was Kawasakicolony, which represented an autogenous or molestus form and morphologically closer to fatigans form than pallens or anautogenous form of the same area.View full abstractDownload PDF (1055K) -
Zenemon OnoArticle type: Article
1963 Volume 14 Issue 3 Pages 151-
Published: October 31, 1963
Released on J-STAGE: September 05, 2016
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Toshiaki Ikeshoji, Tokuko Umino, Takeshi SuzukiArticle type: Article
1963 Volume 14 Issue 3 Pages 152-156
Published: October 31, 1963
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSThe attractiveness of 20 amino acids and two decomposed products to Culex pipiens pallens were determined. A mouse, which wet with 0.5cc of the test solution at various concentrations, was used as an animal trap for the mosquitoes. The female mosquitoes trapped, most of which were fed to repletion, were counted and the ratio to the control well compared. Sulfur containing amino acids, methionine at 0.01% and cystine at 0.001% were highly attractive as 9.7 and 7.0 in the relative attractiveness respectively. Hydrogen sulfide, a decomposed product from sulfur containing amino acids, was also highly attractive as methionine. Glycine, lysine and threonine in 1.0%, tryptophane in 0.1%, tyrosine, arginine glutamic acid, serine and leucine in 0.01% and aspartic acid in 0.001% were also more or less attractive to the mosquitoes. The relationship between the best attractive concentration of each amino acid and the quantity in animal tissues and blood was discussed.View full abstractDownload PDF (361K) -
Kazuki Ogata, Takao NakayamaArticle type: Article
1963 Volume 14 Issue 3 Pages 157-166
Published: October 31, 1963
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSIn order to obtain basic data for paddy-field mosquito control, a survey of the mosquito population and its fluctuation was carried out during the season of 1962, at a paddy-field in the suburbs of Kawasaki. The mosquitoes collected through the survey consist of nine species belonging four genera. Culex tritaeniorhynchus and Anopheles sinensis occupied the majority of the specimens collected from the paddy-field, whereas, Culex hayashii was a dominant species in the irrigation ditch. During the period of the rice nursery, the breeding of mosquito larvae was not abundant yet, because of the area covered by water is restricted and the season is too early. After the riceplanttransplantation (June 11-17th), C. tritaeniorhynchus and A. sinensis increased remarkably. They were, however, entirely eradicated on July 14th by the parathion spray which was made for the rice stem borer control. The population density of mosquitoes almost recovered nine days thereafter, and, on July 24th, the second peak of mosquito abandance was observed when the drainage began. Drainage was repeated for eight times until the final one (Sept. 13th) when the irrigation ceased completely. The period when the mosquito larvae most prevailed was estimated approximately 40 days begining from the riceplant-transplantation to the first drainage. It was fortunate to say that the parathion was applied in the middle of period giving favorable effect upon mosquito control. From the result stated above, the authors assume that if appropriate insecticide was applied twice between the riceplant-transplantation and the final drainage, or, drainage procedure was attempted twice, it will give a decisive effect upon the mosquito control in the paddy-field.View full abstractDownload PDF (1044K) -
Syoziro Asahina, Kazuo Yasutomi, Yoshiko NoguchiArticle type: Article
1963 Volume 14 Issue 3 Pages 167-175
Published: October 31, 1963
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESS1. The lumber yards located on the low coastal area of Tokyo are supplied with waters subjected to sewage pollution and subsequent successive breeding of the mosquitoes of Culex pipiens group. 2. The mosquito species, prevalent at Sarue lumber yard, and, has been becoming a serious pest since several years, was Culex pipiens pallens accompanied with a great many Culex pipiens forma molestus and small populations of Culex tritaeniorhynchus and Anopheles hyrcanus sinensis. It seems noteworthy, in this country, that the autogenous C. molestus made an abundant appearance since an early summer season in an open water like lumber yard. 3. It may be also noteworthy that the LC_<50> against p, p′-DDT of C. molestus larvae showed such a high value as 17.78ppm; the same species also gave, at the same time, a high resistant value against γ-BHC and dieldrin. 4. The LC_<50> value of Culex pipiens pallens larvae was extremely high when compared with those of other populations of the same species in this country. It seems doubtful to get a sufficient control effect against these populations by chlorinated hydrocarbons. 5. However, organophosphorous insecticides showed high efficiency as indicated by the following sequence : Baytex-Sumithion-Nankor-DDVP-diazinon-malathion-Dibrom-Dipterex. 6. Against Culex tritaeniorhynchus and Anopheles hyrcanus sinensis larvae both hydrocarbons and OP-compounds gave excellent efficiency. 7. By application of 0.3% DDVP oil solution, 60ml/m^2, a larval check was recognized for three or four days. 8. By application of 5% diazinon emulsion, diluted 50 times, and sprayed 100ml/m^2, a larval check was seen for four days. 9. By application of 1% or 3% Baytex floating dust 1 to 2 gram/m^2 a larval check was seen for about 14 days. 10. Against the pupal stage of these mosquito species DDVP oil solution showed a high efficiency, while diazinon emulsion, which was rather insufficient in dosis in the present test, did not affect satisfactory. Baytex floating dust was satisfactory when applied to the pupae. 11. Adult survey by a light-trap showed that : 1. In the case of DDVP oil solution the adults population recovered 4-5 days after the spray; 2. In the case of Baytex floating dust the adult mosquitoes were satisfactorily checked, so that no adult was trapped after Aug. 22.View full abstractDownload PDF (962K) -
Kazuo YasutomiArticle type: Article
1963 Volume 14 Issue 3 Pages 176-179
Published: October 31, 1963
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSN, N-Di-n-butyl-p-chlorobenzene sulfonamide was studied as a synergist for DDT against resistant houseflies. The ratio of N, N-Di-n-butyl-p-chlorobenzene-sulfonamide against technical DDT was 1 to 5. The dosage required to obtain 50 per cent mortality ((LD)_<50>) for the resistant Hokota strain was above 60 microgram per female fly on DDT alone, whereas it was 2.35 microgram on mixture containing synergist. The technical DDT plus N, N-Di-n-butyl-p-chlorobenzene sulfonamide was much effective in causing knockdown of CSMA, Obitsu, P-9 and Nebi strains. Fairly high efficacy was still obtained when the concentration of DDT was cut in half. It also activated γ-BHC against the resistant Ebina strain. A similar synergistic effect was recognized for DDT when it was applied as larvicide against the larvae of resistant fly.View full abstractDownload PDF (449K) -
Akifumi Hayashi, Akira ItogaArticle type: Article
1963 Volume 14 Issue 3 Pages 180-182
Published: October 31, 1963
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSEffects of five synergists, namely, piperonyl butoxide, S-421, Safroxan, MGK 264 and n-propyl-isom, as used in combination with pyrethrins and allethrin, were evaluated comparatively in tests with house flies, Musca domestica, employing the spray chamber method, the Petri-dish contact method and the topical treatment method. In the synergism to pyrethrins evaluated in terms of (LD)_<50> or (KT)_<50> for each synergized formulation used in the test, the five synergists are ranked as follows in order of superiority for the respective methods indicated : Topical Application : piperonyl butoxide, n-propyl-isom, Safroxan, MGK 264, S-421 Spray Chamber : piperonyl butoxide, n-propylisom, MGK-264, S-421, Safroxan Petri-dish Contact : piperonyl butoxide, MGK-264, n-propyl-isom, Safroxan, S-421 In the synergism to allethrin evaluated on the same basis as above, the five are ranked in superioirty as follows : Topical Application : S-421, Safroxan, n-propylisom, piperonyl butoxide, MGK-264 Spray Chamber : S-421, piperonyl butoxide, Safroxan, MGK-264 Petri-dish Contact : MGK-264, piperonyl butoxide, S-421, Safroxan, n-propyl-isom As used with each principal toxicant, the order of superiority among the five synergists varied with the test method employed. Regardless of the method employed, however, the synergistic effect of piperonyl butoxide on pyrethrins and that of S-421 on allethrin were indisputably high.View full abstractDownload PDF (373K) -
Junichi AokiArticle type: Article
1963 Volume 14 Issue 3 Pages 183-185
Published: October 31, 1963
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSOribatid mites which live freely in surface layer of soil are seemed harmless to men. But, in case that these mites appeared in great number indoor they may cause generally uncomfortable feeling.View full abstractDownload PDF (417K)
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