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Volume 44 (1993)
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Volume 44, Issue 1
Displaying 1-14 of 14 articles from this issue
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Article type: Cover
1993 Volume 44 Issue 1 Pages Cover2-
Published: March 15, 1993
Released on J-STAGE: August 23, 2016
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Satoshi SHINONAGA, Rokuro KANOArticle type: Article
1993 Volume 44 Issue 1 Pages 1-6
Published: March 15, 1993
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSFive new sarcophagid flies are described and figured from Fiji and Solomon Islands. These are Sarcophaga malaitensis, S. isorokui, S. nigridorsalis, S. tephroides, and S. vitilevensis.View full abstractDownload PDF (502K) -
Mamoru TAKAHASHI, Michisato MURATA, Kazuhiko MACHIDA, Hitoko MISUMI, E ...Article type: Article
1993 Volume 44 Issue 1 Pages 7-14
Published: March 15, 1993
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSSurveys of trombiculid mites were collected from wild rodents and soil, and isolation of Rickettsia tsutsugamushi (Rt) from the rodents and engorged larvae were performed during the period from December 1984 to November 1985 in the northern part of Saitama Prefecture, Japan, where a patient of tsutsugamushi disease had been reported. The trombiculid mites collected from 114 rodents totalled 12,846 individuals, consisting of 6 species : Leptotrombidium (L.) fuji (36.8%), L. (L.) pallidum (36.8%), Gahrliepia (Gateria) saduski (24.0%), Neotrombicula (N.) japonica (2.1%), L. (L.) miyajimai (0.2%) and Eltonella (E.) ichikawai (0.1%). A total of 224 mites were also recovered from soil. They consisted of 4 species, namely, L. pallidum (40.6%), L. fuji (37.1%), G. saduski (18.3%) and N. japonica (4.0%). The presence of engorged larvae of L. pallidum and G. saduski in rodents reached a remarkably high peak in autumn; L. fuji showed high peaks in autumn and spring. On the other hand, the unfed larvae of these species in soil showed the highest peak in autumn or winter. Rts were isolated from only 60.7% (17/28) of L. pallidum recovered from rodents while none were isolated from the other 696 larvae consisting of 5 species. High ratios of Rt isolation, 33.3-58.9%, were especially successful in autumn and winter. Serological investigation of anti-Rt antibody in the rodents revealed 100% positive in December 1984 and November 1985,respectively, and 20.0-72.7% in other months. These results indicate that L. pallidum may serve as the most important vector of tsutsugamushi disease in this endemic area.View full abstractDownload PDF (860K) -
Yoshiaki KONO, Takashi TOMITAArticle type: Article
1993 Volume 44 Issue 1 Pages 15-21
Published: March 15, 1993
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSIn order to elucidate the role of highly active carboxylesterases (CE's) in organophosphorus insecticide resistance, characteristics of CE's in a resistant strain of Culex pipiens molestus were investigated with special reference to their susceptibility to insecticides. Two CE's named E1 and E2 were separated from whole body larvae of a resistant strain by polyacrylamide gel electrophoresis (PAGE). E1 was found specifically in alimentary canal of the larva and E2 was distributed in every tissue of the body. The activities of E1 and E2 in the resistant strain were several and 25-30 times higher than the corresponding CE in a susceptible strain, respectively. E1 was strongly inhibited by most of the organophosphates tested and was moderately inhibited by carbamates. On the other hand, E2 was inhibited by limited types of organophosphates and was not inhibited by S-n-propyl phosphorothioate and carbamates. Insecticides which strongly inhibited E2 gave a high resistance ratio or a strong synergistic effect. Very low dissociation constant of the CE to insecticides indicated that the CE's have no potential to hydrolyze the insecticides. These results support that CE's conjugate with the insecticide uptaken into the body cavity, and consequently prevent the access of the insecticide to the target.View full abstractDownload PDF (656K) -
[in Japanese]Article type: Article
1993 Volume 44 Issue 1 Pages 22-
Published: March 15, 1993
Released on J-STAGE: August 23, 2016
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Katsuhiko MATSUMOTO, Masako OKAMOTO, Yoshitake WADA, Hisashi YAMAURAArticle type: Article
1993 Volume 44 Issue 1 Pages 23-28
Published: March 15, 1993
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSA study was made to observe the effect of various kinds of diet in individual rearing methods on the life cycle of Lardoglyphus konoi under the condition of 30℃ and 96% R.H., in which the hypopus formed easily. For the breeding of the mites, it was found the animal diets were necessary and plant diets were unsuitable. The appearance rates of hypopi of the mite increased when the mites were reared in L. konoi powder, dry yeast powder or wholewheat flour. In the diets containing dry yeast powder, it seemed that the appearance rate of the hypopi was proportionate to the content of dry yeast powder.View full abstractDownload PDF (673K) -
Yoshinori SHONO, Ryo ARAKAWA, Masachika HIRANO, Yasuo ABEArticle type: Article
1993 Volume 44 Issue 1 Pages 29-32
Published: March 15, 1993
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSThe susceptibility to fenitrothion and permethrin of two species of fly pupal parasitoids, Spalangia endius and Nasonia vitripennis, which are important natural enemies of flies, was examined by the direct spray of the emulsifiable concentrate. The susceptibility of N. vitripennis (Toyama strain) to permethrin was 17.5 times and to fenitrothion 4.5 times higher respectively, than that of S. endius (Toyama strain). Small difference of susceptibility to both insecticides was recognized among three strains (Toyama, Miyazaki and USA) of S. endius. The treatment of pyriproxyfen (6.4μg/g medium) to the hosts did not have much influence on the emergence of the two species, and the emerged adults reproduced offspring normally. These results suggest the possibility of combined control by pyriproxyfen and mass releasing of the housefly parasitoids.View full abstractDownload PDF (415K) -
Kimio HIRABAYASHI, Ryoji NAKAZATO, Akio OHARA, Tokio OKINOArticle type: Article
1993 Volume 44 Issue 1 Pages 33-39
Published: March 15, 1993
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSA study on attraction for two nuisance chironomid midges, Chironomus plumosus L. and Tokunagayusurika akamusi T., were carried out through the use of light of different colors, wattages, and wavelengths in light traps at the rooftop of the Suwa Hydrobiological Station. The color effects for attracting chironomid midges were tested by five kinds of 100W color incandescent lamps; white, yellow, blue, green, and red. The effects of light intensities were also studied using white lamps with four different wattages; 100,60,40,and 20. The effects of five different light wavelengths were studied using a BLB lamp (290-410nm), BL lamp (290-500), FLW lamp (350-705), FLY lamp (500-705) and white 100W lamp (control). The midges were attracted more to the quality (wavelength) than to the quantity (intensity) of light. This result indicated that the manipulation of light wavelength may be appropriate for the development of an overall integrated strategy to control nuisance chironomid midges in the Lake Suwa area.View full abstractDownload PDF (719K) -
John I. AKOH, Felix I. AIGBODION, Jonny O. A. ONYEKAArticle type: Article
1993 Volume 44 Issue 1 Pages 41-43
Published: March 15, 1993
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSThe effect of the source and size of bloodmeal on egg production in Culex quinquefasciatus was investigated. Three vertebrate hosts (man, rat and chicken) were used as sources of bloodmeal. Results show that the differences in the amount of blood engorged from the various hosts were not significant. However, the number of eggs produced by the mosquitoes fed on the blood of the various hosts varied significantly (p<0.001). Female Cx. quinquefasciatus that took avian blood laid a greater number of eggs than those that fed on mammals.View full abstractDownload PDF (305K) -
Tohru INAOKA, Minoru NAKAOArticle type: Article
1993 Volume 44 Issue 1 Pages 45-47
Published: March 15, 1993
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESS -
Minoru NAKAO, Kenji MIYAMOTOArticle type: Article
1993 Volume 44 Issue 1 Pages 49-52
Published: March 15, 1993
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESS -
[in Japanese]Article type: Article
1993 Volume 44 Issue 1 Pages 53-62
Published: March 15, 1993
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSDownload PDF (1314K) -
[in Japanese]Article type: Article
1993 Volume 44 Issue 1 Pages i-ii
Published: March 15, 1993
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSDownload PDF (166K) -
Article type: Cover
1993 Volume 44 Issue 1 Pages Cover4-
Published: March 15, 1993
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSDownload PDF (74K)
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