Medical Entomology and Zoology
Online ISSN : 2185-5609
Print ISSN : 0424-7086
ISSN-L : 0424-7086
Volume 38, Issue 4
Displaying 1-13 of 13 articles from this issue
  • Article type: Cover
    1987 Volume 38 Issue 4 Pages Cover14-
    Published: December 15, 1987
    Released on J-STAGE: September 02, 2016
    JOURNAL FREE ACCESS
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  • Fe Reyes MAGPAYO, Satoshi SHINONAGA, Rokuro KANO
    Article type: Article
    1987 Volume 38 Issue 4 Pages 257-269
    Published: December 15, 1987
    Released on J-STAGE: September 02, 2016
    JOURNAL FREE ACCESS
    A survey on the muscoid fly fauna in Philippines was made based on the collections of Tokyo Medical and Dental University, B.P.Bishop Museum, Hawaii, and Ateneo de Davao University, Philippines. Among those identified were 15 species belonging to the Genus Musca, contributing new knowledge on the locality of the species in many islands of the Philippines. Musca cassara and Musca formosana are newly recorded from the country. A key to the recognized species and some notes on their bionomics are included.
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  • Makoto HATAKOSHI, Hitoshi KAWADA, Sumio NISHIDA, Hirosi KISIDA, Isamu ...
    Article type: Article
    1987 Volume 38 Issue 4 Pages 271-274
    Published: December 15, 1987
    Released on J-STAGE: September 02, 2016
    JOURNAL FREE ACCESS
    A newly synthesized juvenile hormone active compound, S-31183 (2-[1-methyl-2-(4-phenoxyphenoxy) ethoxy] pyridine) was evaluated for its inhibition of emergence of adult Culex pipiens pallens, Anopheles stephensi, Aedes aegypti and Musca domestica in the laboratory. It was more active than methoprene, diflubenzuron, or temephos against last instar larvae of Cx. p. pallens, An. stephensi and Ae. aegypti. S-31183 was more active than methoprene and diflubenzuron against 4-day-old larvae of M. domestica in the artificial medium, and more active than methoprene against eggs and 4-day-old larvae of M. domestica in the chicken manure medium.
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  • Hideo HASEGAWA, Manabu SASA
    Article type: Article
    1987 Volume 38 Issue 4 Pages 275-295
    Published: December 15, 1987
    Released on J-STAGE: September 02, 2016
    JOURNAL FREE ACCESS
    The morphology of the chironomid pupae and larvae of the tribe Chironomini collected from the Ryukyu Islands, Japan, were studied. New species names are proposed for the four chironomids whose adults were described in the former report in 1983. The pupae and larvae of 8 species, i.e. Chironomus longilobus, Chironomus glauciventris, Chironomus javanus, Chironomus okinawanus sp.n., Chironomus samoensis, Chironomus crassiforceps, Dicrotendipes yaeyamanus sp.n. and Polypedilum miyakoense sp.n., and the pupae of 3 species, i.e. Dicrotendipes niveicaudus, Cryptochironomus hentonensis sp.n. and Cryptochironomus javae, are described and illustrated. Keys for pupae and larvae of Okinawan species of Chironomini are also provided.
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  • Seiken MATAYOSHI, Shinichi NODA, Atsuo SATO
    Article type: Article
    1987 Volume 38 Issue 4 Pages 297-301
    Published: December 15, 1987
    Released on J-STAGE: September 02, 2016
    JOURNAL FREE ACCESS
    Seasonal fluctuations in the egg production of the giant African snail, Achatina fulica, the growth of the snail and the rate of infection with Angiostrongylus cantonensis in relation to the size of the snail were studied on the Amami Islands. Two clear peaks in the egg production were observed in June and in October/December. Almost all the eggs and infants produced in the latter period died from the cold. The effective reproduction season, therefore, was assumed to be around June. Infant snails grew rapidly to 50-70mm in shell height and then leveled off. The infection rate with A. cantonensis rose rapidly in snails over 50mm in shell height, namely from 11.7 (20-49mm) to 67.9% (50-89mm)
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  • Kiyoshi N. SATAKE, Masayuki YASUNO
    Article type: Article
    1987 Volume 38 Issue 4 Pages 303-316
    Published: December 15, 1987
    Released on J-STAGE: September 02, 2016
    JOURNAL FREE ACCESS
    An insect growth regulator diflubenzuron was applied to the Kokawa River at the concentration of 1.25ppm for an hour to control simuliid larvae (Ogata et al., unpublished). On that occasion, the effects of the chemical on both invertebrate communities and fish were assessed. Weekly sampling of invertebrates and fish was conducted till the 4th week after the application in both treated and untreated region. Most of invertebrates were eliminated within 2 weeks, while Hydropsycidae died out gradually. Adults of Elmidae, which had not found before, appeared 1 week after in large number at the uppermost of the treated region. Fast recovery of Baetis at the same place was recognized. Downstream drifts from untreated region accounted for this result. While recolonizations by newly hatched larvae of Baetis, Chironomidae, Antocha and Simuliidae were prominent 3-4 weeks after in all the treated region. These fast recolonizers reached abnormally higher densities. On the other hand, most of caddisflies and mayflies had not recovered by the 4th weeks. Since application of diflubenzuron induces an enormous increase in target dipteran larvae including simuliids, once this chemical is used in a river, frequent applications are required subsequently. No fish mortality was observed on Phoxinus lagowski f. steindachneri and Leuciscus hakonensis. Both adults and fry of the former were commonly found during the study periods. Their condition factors increased after the application, suggesting that this species fed on attached algae which became abundant in the treated region.
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  • Hitoshi KAWADA, Kazunobu DOHARA, Goro SHINJO
    Article type: Article
    1987 Volume 38 Issue 4 Pages 317-322
    Published: December 15, 1987
    Released on J-STAGE: September 02, 2016
    JOURNAL FREE ACCESS
    The newly synthesized pyridyl ether compound 2-[1-methyl-2-(4-phenoxyphenoxy) ethoxy] pyridine (S-31183), which acts as a juvenile hormone, was evaluated for larvicidal potency against the larvae of six strains of the housefly, Musca domestica. S-31183 showed higher larvicidal activity against pyrethroid and organophosphorus resistant houseflies than methoprene or diflubenzuron in the laboratory, and showed promising results under the semi-field conditions.
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  • Kimito UCHIKAWA, Nobuo KUMADA
    Article type: Article
    1987 Volume 38 Issue 4 Pages 323-332
    Published: December 15, 1987
    Released on J-STAGE: September 02, 2016
    JOURNAL FREE ACCESS
    Soil samples were taken monthly at 7 stations, 4 in Matsumoto and 3 in Miasa, Nagano Prefecture, and examined for the presence of trombiculid mites by the improved Tullgren's method during the period from June 1985 to May 1986. Additional examinations were continued until October 1986 at 1 each station in the 2 areas. Trombiculid fauna and density of each species varied according to the differences in vegetation and soil nature of the stations surveyed, indicating definite dependency of trombiculids on these environmental factors. Stations in grasslands of Miscanthus and Artemisia, which were newly formed on abandoned fields and abounded with tunnel networks made by field rodents, as well as stations in the similar grasslands on gravelly lands gave the richer yields of trombiculids of the genus Leptotrombidium, particularly L. pallidum and L. intermedium, than stations in the stabilized Miscanthus grasslands. Banks of paddy fields seemed to be the more suitable habitat for L. pallidum than the Miscanthus grasslands formed on abandoned paddies, where the bed soil is chiefly composed of clayish matter. Seasonally, L. pallidum larvae in the soil first appeared in August, increased in number and reached the peak of abundance in September, then declined but maintained a fairly good population through autumn and winter, and became depopulated by June next year. This seasonal pattern of fluctuation differed remarkably from that observed on wild rodents trapped in the same areas, which showed the clear bimodality in autumn and spring. The trombiculid densities in the soil observed at 2 of the 7 stations were unusually high in 1985,comprising L. intermedium and L. pallidum as the main species; but the densities were significantly decreased in 1986. In these stations, replacement of the dominant species by other one was also observed, giving support to the movability of endemic foci of tsutsugamushi disease.
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  • Toshiaki IKESHOJI
    Article type: Article
    1987 Volume 38 Issue 4 Pages 333-338
    Published: December 15, 1987
    Released on J-STAGE: September 02, 2016
    JOURNAL FREE ACCESS
    Autochemosterilization of mosquitoes by a sound trap necessitated designing an improved formulation of chemosterilant for treatment at inside of the trap. When 18 chemicals including some putative mosquito attractants were screened in mixtures of hempa by contact test, lactic acid mixture gave significantly higher sterility than hempa to Culex pipiens molestus. Metepa was more effective and residual than hempa up to 5 days after treatment both in lactic acid mixture and metepa per se. Topical application of the mixture proved the synergistic activity of lactic acid with metepa. Gas chromatographic analysis of metepa showed that males took up 0.4 times less amount of metepa from the mixture-treated sound trap than the metepa-treated sound trap, because lactic acid was somewhat repellent to males. Nevertheless, the sterility of males was slightly higher with the mixturetreated trap than the metepa-treated trap.
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  • Takashi ISHII
    Article type: Article
    1987 Volume 38 Issue 4 Pages 339-340
    Published: December 15, 1987
    Released on J-STAGE: September 02, 2016
    JOURNAL FREE ACCESS
  • Article type: Index
    1987 Volume 38 Issue 4 Pages 1-2
    Published: December 15, 1987
    Released on J-STAGE: September 02, 2016
    JOURNAL FREE ACCESS
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  • Article type: Index
    1987 Volume 38 Issue 4 Pages 3-5
    Published: December 15, 1987
    Released on J-STAGE: September 02, 2016
    JOURNAL FREE ACCESS
    Download PDF (177K)
  • Article type: Cover
    1987 Volume 38 Issue 4 Pages Cover16-
    Published: December 15, 1987
    Released on J-STAGE: September 02, 2016
    JOURNAL FREE ACCESS
    Download PDF (52K)
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