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Volume 35 (1984)
- Issue 4 Pages 325-
- Issue 3 Pages 225-
- Issue 2 Pages 95-
- Issue 1 Pages 1-
Volume 35, Issue 2
Displaying 1-10 of 10 articles from this issue
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Article type: Cover
1984 Volume 35 Issue 2 Pages Cover6-
Published: June 15, 1984
Released on J-STAGE: September 02, 2016
JOURNAL FREE ACCESSDownload PDF (49K) -
Yoichi YAMAGATA, Takao OKAZAWA, Pedro Antonio MOLINAArticle type: Article
1984 Volume 35 Issue 2 Pages 95-102
Published: June 15, 1984
Released on J-STAGE: September 02, 2016
JOURNAL FREE ACCESSOn-foot surveys were made for the purpose of mapping perennial streams infected with Simulium ochraceum in an endemic area of onchocerciasis in Guatemala. Of 246 perennial streams (144.4km) found in 477(km)^2,119 (48.4%) or 27.8km (19.3%) were found infested with S. ochraceum. S. ochraceum larvae were found mainly from older impermeable rocks such as Tertiary lahars and lavas, arkosic conglomerate and Cretaceous granite. Although recent volcanic rocks have very few perennial streams due to permeability, they are important as water reservoirs for the underlying impermeable rocks. Quarternary alluvium showed high stream density, but no S. ochraceum larva was found from these streams, due probably to small channel slope. The area with Tertiary lahars and lavas is the most important bed of ochraceum-breeding streams, which roughly coincides with the onchocerciasis endemic area. Of total 1469 channel segments in this area, only 203 (13.8%) had perennial streams, of which 108 (53.2%) were infested with S. ochraceum. With increment of the channel order, the raito of channel segments with perennial streams increased, while, on the contrary, the ratio of perennial streams with S. ochraceum larvae decreased. No S. ochraceum larva was found in the fourth and fifth order channels. S. ochraceum larvae were found mainly in the uppermost part of the stream network, immediately below headsprings. The headsprings were found arranged nearly horizontally on the elevations 900m, 1100m and 1300-1460m above sea level.View full abstractDownload PDF (708K) -
Tadashi MIYATA, Tetsuo SAITO, Kazuo YASUTOMIArticle type: Article
1984 Volume 35 Issue 2 Pages 103-107
Published: June 15, 1984
Released on J-STAGE: September 02, 2016
JOURNAL FREE ACCESSIn vitro degradation of ^<14>C-malathion by Culex pipiens quinquefasciatus was studied. The optimum temperature of ^<14>C-malathion degradation in vitro by C. p. quinquefasciatus 900g supernatant fraction was 25℃. Most of ^<14>C-malathion degradation activity was found in the 105,000g supernatant fraction. ^<14>C-Malathion degradation activity of the 105,000g supernatant fraction was 20-35-fold higher in the resistant strain than in the susceptible one. ^<14>C-Malathion degradation activity was higher in adults than in larvae.View full abstractDownload PDF (409K) -
Katsumi SAITO, Hideki SATOArticle type: Article
1984 Volume 35 Issue 2 Pages 109-116
Published: June 15, 1984
Released on J-STAGE: September 02, 2016
JOURNAL FREE ACCESSA fauna and distribution of black flies (Simuliidae : Diptera) in Wakayama Prefecture were investigated by collection of larvae and pupae. A total of 3,639 larvae and 556 pupae was collected from 44 sites. Three genera, eighteen species were found, of which Prosimulium kiotoense, Cnephia mutata, Simulium kobayashii, S. uchidai, S. yamayaense, S. mie, S. shogakii, S. aokii, S. quinquestriatum, S. nikkoense, S. rufibasis and S. sp. were newly recorded. The predominant species was Simulium japonicum, followed by S. uchidai, S. bidentatum, S. subcostatum, S. suzukii, S. mie and S. sp.View full abstractDownload PDF (768K) -
Syoziro ASAHINAArticle type: Article
1984 Volume 35 Issue 2 Pages 117-120
Published: June 15, 1984
Released on J-STAGE: September 02, 2016
JOURNAL FREE ACCESSSeventeen species of the cockroaches were recorded from three islands of the Ryukyus, namely, Okinawa, Ishigaki and Iriomote. These were all taken during my survey in May 1983. The female of Symploce yayeyamana Asahina (1979) was first described herein as taken from Iriomote Island. A brief description of the Allotype female is as follows; Body ca. 17mm, hindwing length 15mm. Body shining chestnut brown; the large prothoracic marking is deep brown, narrowly striped in the center as is the case in the male insect. Abdomen broad, supraanal plate broadly triangular, the apex rounded (Fig. 1). Subanal plate very broad covering whole abdominal end beyond the supraanal plate. A female and a larval specimens of Trichoblatta nigra (Shiraki) were recorded for the first time from Japanese faunal limits. Those were taken by Mr. S. Hori on Mt. Omoto, Ishigaki Island, and preserved in the collection of Mr. F. Kawamura, Ryukyu University.View full abstractDownload PDF (505K) -
Hiroyuki TAKAOKA, Hiroshi SUZUKI, Shinichi NODA, J. Onofre OCHOA A., I ...Article type: Article
1984 Volume 35 Issue 2 Pages 121-127
Published: June 15, 1984
Released on J-STAGE: September 02, 2016
JOURNAL FREE ACCESSIntake, migration and development of Onchocerca volvulus microfilariae in Simulium haematopotum in Guatemala were experimentally studied, as compared with those in S. ochraceum. When wild females of blackflies fed on the three regions of a volunteer's back (A, B and C), each harboring 133,90 and 12 microfilariae per one skin snip, average intakes by S. haematopotum were 92 (A), 86 (B) and 59 (C), respectively. However, as seen in S. ochraceum, most microfilariae ingested were injured and/or killed, presumably by the buccopharyngeal armature. At a constant temperature of 22℃, infective larvae were found for the first time in females of both species, dying between the eighth and ninth days after ingestion of microfilariae. Simulium haematopotum was not adversely affected by ingesting of microfilariae, and survival rates beyond eight days (45.5-56.4%) were nearly as high as those in S. ochraceum. However, larval development was asynchronous in this species, unlike in S. ochraceum. Thus, the proportion of female S. haematopotum harboring third-stage larvae among survivors through eight days was 80.0% (A), 21.4% (B) and 10.2% (C), being somewhat lower than corresponding rates for S. ochraceum. Overall, it was concluded that S. haematopotum is a less efficient potential vector of O. volvulus than S. ochraceum.View full abstractDownload PDF (634K) -
Masatoshi TAKAOKA, Shojiro OKADAArticle type: Article
1984 Volume 35 Issue 2 Pages 129-137
Published: June 15, 1984
Released on J-STAGE: September 02, 2016
JOURNAL FREE ACCESSSeasonal occurrences of the pyroglyphid mites in house dusts were observed during period from October, 1981,to September, 1982 in Saitama prefecture. Six houses were selected for this survey. Of these, 3 houses had asthmatic children in their families. Surveys on the seasonal fluctuation of mite population in house dust was carried out in Saitama prefecture. Eighty four samples from 26 houses were examined in 4 seasons, 1981-82. Distinct seasonal changes were observed in number of pyroglyphids in all the houses surveyed. The highest density of mites in the house dust was shown from July to September in 1982. Dermatophagoides pteronyssinus was the most abundant species from August to September, while D. farinae was more prevalent than D. pteronyssinus in July and August. Average numbers of mites per 0.5 gram fine house dust were 152.3 in winter (26 samples), 254.0 in spring (20), 663.0 in summer (19), and 333.1 in autumn (19). Pyroglyphid mites were dominant in number in each season. Mites belonging to Acaridae, Analgesidae, Trombidiformes and Mesostigmata increased in number in summer. On the other hand, Glycyphagus spp. increased in winter, Chortoglyphus sp. of Glycyphagidae in autumn, and oribatid mites in spring. Among the pyroglyphid mites obtained, D. pteronyssinus, D. farinae and Hirstia domicola showed the largest numbers in summer, however, Malayoglyphus intermedius reached a peak in number in autumn and Euroglyphus maynei showed no remarkable seasonal fluctuation. Statistical analysis was done for number of pyroglyphid mites collected from 18 houses in four seasons by Wilcoxon's method. Statistically significant differences were shown in number of pyroglyphid mites in the house dust as follows : Sum.>Win., Sum.>Spr., Sum.>Aut., Aut.>Win. and Spr.>Win. except to Spr. vs. Aut .(p<0.01).View full abstractDownload PDF (784K) -
Terumi NAKAJIMA, Tadashi YASUHARA, Hisanobu YOSHIDA, Yayoi UENO, Chie ...Article type: Article
1984 Volume 35 Issue 2 Pages 139-147
Published: June 15, 1984
Released on J-STAGE: September 02, 2016
JOURNAL FREE ACCESSWaspkinins, active peptides analogues to bradykinin in the vespid venom, of some Japanese species were isolated and their structures were determined. The structural differentiation of 9 kinds of the Japanese species in the genera of Polistes, Vespa and Vespula was presented by comparing with their amino sequences.View full abstractDownload PDF (752K) -
Waseem AHMAD, Anjum ARA, Usman M. ADHAMIArticle type: Article
1984 Volume 35 Issue 2 Pages 149-150
Published: June 15, 1984
Released on J-STAGE: September 02, 2016
JOURNAL FREE ACCESS -
Article type: Cover
1984 Volume 35 Issue 2 Pages Cover8-
Published: June 15, 1984
Released on J-STAGE: September 02, 2016
JOURNAL FREE ACCESSDownload PDF (54K)
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