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Volume 17 (1966)
- Issue 4 Pages 223-
- Issue 3 Pages 161-
- Issue 2 Pages 83-
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Volume 17, Issue 4
Displaying 1-9 of 9 articles from this issue
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Article type: Cover
1966 Volume 17 Issue 4 Pages Cover8-
Published: December 31, 1966
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSDownload PDF (34K) -
Rokuro Kano, Satoshi ShinonagaArticle type: Article
1966 Volume 17 Issue 4 Pages 223-225
Published: December 31, 1966
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESS -
Tadaya Takeuchi, Isamu Mori, Mikio MaedaArticle type: Article
1966 Volume 17 Issue 4 Pages 226-231
Published: December 31, 1966
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSIn order to know the relationship of flies with the food pollution, the quantity of bacteria carried by them was studied fundamentally in the present study and the following results were obtained. The pathogenic bacteria (Shigella dysenteriae, Salmonella typhi murium) which were taken by flies in their larval stage were extinguished in the pupal stage, but the pupal content, harbouring non-pathogenic bacteria, did not become an aseptic state. At ordinary creeping of the adult flies, the transmission of bacteria was mainly the mechanical dissemination by means of adhesion of bacteria to tarsi. The quantity of bacteria attached to the tarsi was proportional to the density of bacteria on the materials on which flies creeped. The maximum value of bacterial transmission was observed when a fly creeped on the materials of which water content was 30 per cent and viscosity was 180.View full abstractDownload PDF (774K) -
Hiroshi Matsuzawa, Nobuo KitaharaArticle type: Article
1966 Volume 17 Issue 4 Pages 232-235
Published: December 31, 1966
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSA study on the biology, especially on the egg laying, development and the survival of the adult of Aedes albopictus SKUSE was carried out in 1965 and the following results were acquired : 1. About 80% of the number of the blood-sucked female adults gathered in summer from the bush at the beginning of the study, normally laid their eggs in the rearing container. They laid out 80% of the number of eggs for 3-5 days after the introduction of the female adults under the constant temperature of 25℃. 2) The total number of eggs laid out per female mosquito is about 80 on the average. 3) The developmental period in days of each stage of this species of mosquito is : egg 8.1 days, larva 10.2 days, pupa 5.9 days and total 24.3 days under the temperature of 20℃, egg 3.8 days, larva 7.5 days, pupa 2.4 days and total 13.7 days under 25℃ temperature, and egg 3.8 days, larva 5.9 days, pupa 2.3 days and total 12.0 days under 30℃ temperature. As the developmental zero point the following values are presumed : 10°-11℃ for egg, 9℃ for larva, 11.5°-13.5℃ for pupa and 9°-10℃ for all the developmental stage. 4) The duration of survival of the adult male is shorter than that of the female under 25℃. Generally speaking, they live for 6-7 days on the average in the rearing with water only and for 21-26 days in that with 20% sugar water respectively. However, the duration of their survival seems to become longer to some extent than the duration above mentioned, if the rearing container is suitable enough.View full abstractDownload PDF (404K) -
Shunnosuke HirakosoArticle type: Article
1966 Volume 17 Issue 4 Pages 236-238
Published: December 31, 1966
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSExperiments were made to investigate the inactivating effects of parathion and fenitrothion on mosquito larvae lived in culture media of microorganisms. From experimental results, remarkable reductions of effectiveness were seen in culture with 1% of peptone containing bacteria of Pseudomonas ovalis IAM 1069, Pseudomonas aeruginosa IAM 1007, Pseudomonas aeruginosa OTU 8252, Pseudomonas aeruginosa HO, Pseudomonas fragi IAM 3458, Pseudononas fragi IAM 1650, Pseudomonas cruciviae IAM 1048, Pseudomonas aureofaciens IAM 1001, Bacillus subtilis 10, Bacillus megaterium IAM 1166, Bacillus cereus IAM 1072 and Bacillus macerans IAM 1227. It was also determined that nitrophenol and nitrobenzene did not convert to aminophenol and aniline, though parathion and fenitrothion were converted to amino-parathion and amino-fenitrothion, respectively, in the presence of these microorganisms.View full abstractDownload PDF (332K) -
Yoshisato InoueArticle type: Article
1966 Volume 17 Issue 4 Pages 239-242
Published: December 31, 1966
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSVery few informations with regard to the insecticide resistance of medical flies are available other than the house fly. In this paper, γ-BHC resistance in a flesh fly, Boettcherisca peregrina, which is a main pest in the privy-pot of our native-type lavatories, was reported. The flies collected from Yushima, Tokyo, in 1962, and Ohmiya, Saitama Prefecture, in 1964 were tested after being reared in laboratory and compared with a susceptible strain maintained in our insectarium since 1956. For detecting the resistance of the larvae, the last instar larvae were tested under the author's "dilution contact method" in which the larvae were exposed to a thin layer of desired concentrations of insecticide emulsion for 48 hours and the mortality was counted. The adults were assessed by topical application test. The LC-50 values in the larval tests were 19ppm in susceptible strain, 125ppm in Yushima colony and 500ppm in Ohmiya colony. Both colonies, Yushima and Ohmiya, were, consequently, fairly resistant to γ-BHC, showing 6.6 and 26.3 folds respectively as resistance ratio. Their resistance seem to be caused by frequent spraying with γ-BHC emulsion over the privy-pots. The LD-50 values in the adult flies were 0.08μg per female fly in susceptible strain, 0.1μg in Yushima and 0.26μg in Ohmiya. Though the latter colony is certainly resistant to γ-BHC, the resistant level is not so remarkable as shown of their larval stage. It was also confirmed, using fenthion emulsion to the larvae, that the γ-BHC resistant Ohmiya colony is still susceptible to it.View full abstractDownload PDF (499K) -
Syoziro Asahina, Kazuo Yasutomi, Yoshisato Inoue, Kazuki Ogata, Yosiko ...Article type: Article
1966 Volume 17 Issue 4 Pages 243-246
Published: December 31, 1966
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSInsecticide resistance level of two different colonies of the larva of Simulium ornatum was compared. One colony was taken at Chino, Nagano Prefecture, where frequent control by DDT or diazinon was made for more than five years, another colony was taken at Saku, Nagano Prefecture, where no insecticide control was made due to the regulation of local fish culture. A rather simple test method was adopted and satisfactory results were obtained. Larvae are dipped in each the emulsions for ten minutes and mortality was observed after 24 hours in aerated water. The Chino-colony showed in LC_<50> about 10 fold greater in DDT, diazinon and fenthion than that of Saku-colony. These results may be due to the fact that the Chino-colony has experienced past insecticide pressure. At present the following sequence in the efficiency of these insecticides can be mentioned for this species. fenthion=fenitrothion>diazinon>trichlorfon>DDTView full abstractDownload PDF (530K) -
Kazuo Yasutomi, Seiroku Tokuchi, Kiyotoshi Ishikawa, Kazue Tateno, Som ...Article type: Article
1966 Volume 17 Issue 4 Pages 247-251
Published: December 31, 1966
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSA series of field control tests against diazinonresistant housefly larvae applying organophosphorus emulsions to manure heaps were made during June 1965 to July 1966 in Mihara area of Hokota Village, Ibaraki Prefecture. The results may be summarized as follows : Larvicidal treatments of fenitrothion or fenthion, at the dosage of 0.25 gram in active ingredients per square metre which has been recommended in the table prepared by Ministry of Health and Welfare, revealed unsatisfactory against the larvae in manure heaps, but they could be controlled by adding the dose up to 1.25 gram. Fenthion was the most effective, fenitrothion comes the next, but diazinon was naturally far inferior to them at the same dose of 1.25 gram. Against the larvae of Stomoxys calcitrans, fenthion and fenitrothion proved most effective and dichlorvos was the next.View full abstractDownload PDF (610K) -
Yukihiko Fujii, Tadasi Takahashi, Shigeyoshi Yoshida, Fumiyo Konishi, ...Article type: Article
1966 Volume 17 Issue 4 Pages 252-255
Published: December 31, 1966
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSAn experiment was made on mosquito control using fenitrothion (Sumithion) in a hamlet at a site formerly used for salt -fields in a suburb of City of Sakaide, Kagawa Prefecture in July 1965, and following results were acquired. 1) The six species of mosquitoes such as Culex pipiens pallens, Culex tritaeniorhynchus, Armigeres subalbatus, Aedes togoi, Aedes albopictus and Anopheles hyrcanus sinensis were observed at the experimental area and its vicinity, and several noticeable breeding places of Culex pipiens pallens were found there. 2) Application of the insecticide in this experiment seems to have been successful, judging from the data of the number of mosquitoes invaded the residences in this area at night and that of the number of mosquitoes captured by the light trap set by the main breeding place. 3) The number of Anopheles hyrcanus sinensis captured by the light trap was especially large in the latter part of July. Perhaps this state was due to the remarkable emergence of the species at this time of the year in paddy-fields around the experimental area.View full abstractDownload PDF (413K)
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