Medical Entomology and Zoology
Online ISSN : 2185-5609
Print ISSN : 0424-7086
ISSN-L : 0424-7086
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Volume 40, Issue 2
Displaying 1-13 of 13 articles from this issue
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  • [title in Japanese]
    Article type: Cover
    1989 Volume 40 Issue 2 Pages Cover6-
    Published: June 15, 1989
    Released on J-STAGE: August 26, 2016
    DOIhttps://doi.org/10.7601/mez.40.Cover6
    JOURNAL FREE ACCESS
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  • Genetic variability in isozymes of Anopheles minimus group from various localities in Thailand
    Narumon KOMALAMISRA
    Article type: Article
    1989 Volume 40 Issue 2 Pages 69-80
    Published: June 15, 1989
    Released on J-STAGE: August 26, 2016
    DOIhttps://doi.org/10.7601/mez.40.69
    JOURNAL FREE ACCESS
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    Twelve enzymes (20 loci) were analyzed electrophoretically to investigate the genetic relationships among 8 populations of Anopheles minimus from 7 localities in Thailand. Seven isozymes, Aph-1,Est-2,Lap-1,Lap-2,Pgi, Pgm, and Xdh, were used to discriminate some minimus populations from the others. All of the populations seemed to be very polymorphic, especially the population from Tha Lum Yai, Kanchanaburi. The expected mean of heterozygosity of this population was 0.36. The populations with pampanai form and minimus form from Pu Toei, Kanchanaburi were more homogenous in the genome than the other populations. A dendrodram, based on the UPGMA method, of genetic divergence among the 8 populations of the minimus group proved Saraburi and Loei to be the local populations (Nei's genetic distance was 0.027). The others were lower than the subspecific level but higher than the local population level. This indicated there exist various grades of genetic divergence among the populations due to their evolutionary process.
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  • Correlation of mosquito size, blood meal size and malarial oocyst production
    Kazuyo ICHIMORI
    Article type: Article
    1989 Volume 40 Issue 2 Pages 81-85
    Published: June 15, 1989
    Released on J-STAGE: August 26, 2016
    DOIhttps://doi.org/10.7601/mez.40.81
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    Three experiments were carried out to determine whether blood meal size is related to mosquito size and to malaria oocyst production in mosquitoes. Anopheles stephensi (BEECH) and Plasmodium yoelii nigeriensis (N67) were used in all experiments. Wing length was used as a measure of mosquito size, blood meal size was calculated using a ferrocyanide method and oocysts were counted under the microscope. Mosquito size showed a strong positive correlation with blood meal intake, though neither of these two parameters showed any positive relationship with malaria oocyst production in the mosquito stomach wall. The implications of these results for the transmission of malaria are discussed.
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  • Experimental crossing of Aedes albopictus, Aedes flavopictus downsi and Aedes riversi (Diptera : Culicidae) occurring in Okinawajima, Ryukyu Islands, Japan
    Ichiro MIYAGI, Takako TOMA
    Article type: Article
    1989 Volume 40 Issue 2 Pages 87-95
    Published: June 15, 1989
    Released on J-STAGE: August 26, 2016
    DOIhttps://doi.org/10.7601/mez.40.87_1
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    The degree of sexual isolation among three species of mosquitoes, Aedes albopictus (Skuse), Aedes flavopictus downsi Bohart and Ingram, and Aedes riversi Bohart, occurring in Okinawajima, Ryukyu Islands was assessed by "hide-and-seek" tests and experimental crosses. The males of Ae. albopictus and Ae. f. downsi could readily discriminate conspecific females. However, under a non-choice condition, interspecific insemination took place. The cross between Ae. albopictus females and Ae. f. downsi males produced a small number of fertile hybrids. These hybrids were bred through the F_2 generation and appeared to be normal in every way. However the eggs from the reciprocal cross were completely sterile. Backcrosses of F_1 hybrids between female Ae. albopictus and male Ae. f. downsi to both parents produced partially fertile eggs, with the exception of Ae. albopictus males crossed with hybrid females. No insemination was observed in the Ae. riversi females crossed to either Ae. albopictus males or Ae. f. downsi males, as well as in the reciprocal crosses. Pre-and postmating isolation mechanisms were suggested to be operative among these 3 species.
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  • [title in Japanese]
    [in Japanese]
    Article type: Article
    1989 Volume 40 Issue 2 Pages 96-
    Published: June 15, 1989
    Released on J-STAGE: August 26, 2016
    DOIhttps://doi.org/10.7601/mez.40.96
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  • Ultrasonic calls produced by pups of Rattus rattus and R. norvegicus (Wistar rat)
    Yousuke WATANABE
    Article type: Article
    1989 Volume 40 Issue 2 Pages 97-108
    Published: June 15, 1989
    Released on J-STAGE: August 26, 2016
    DOIhttps://doi.org/10.7601/mez.40.97_1
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    Ultrasonic calls caused by three stimulations of "isolation, " "handling" and "electricity" in 7-to 30-day-old Rattus rattus and 10-to 30-day-old Wistar rats (R. norvegicus) were examined. FVgrams (ultrasonic diagrams compiled by a FV-converter) were available for analysis of long-time-recorded ultrasound produced by R. rattus and Wistar rat pups. Analysis with FVgram was based on wave frequency at "peak component" of ultrasound, duration of ultrasonic calls, and pattern grouping of ultrasonic calls. Distribution curve of wave frequency at "peak component" showed that younger pups in both rat species used higher frequency. It also showed that among 30-day-old Wistar rats, females emitted calls of higher frequency than males. Distribution curve of duration of the calls showed that older pups in both rat species produced longer calls. So far as pattern groupings of ultrasonic calls on FVgram are concerned, five different types were identified with possible meanings for ultrasonic communication among rats.
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  • Studies on the cockroach allergy : 2. Nature of the German cockroach antigen and its allergenic activity in experimental animals
    Toshioki KAWAKAMI, Chiharu SUTO, Nobuo KUMADA
    Article type: Article
    1989 Volume 40 Issue 2 Pages 109-116
    Published: June 15, 1989
    Released on J-STAGE: August 26, 2016
    DOIhttps://doi.org/10.7601/mez.40.109
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    Allergenicity of the cockroach, Blattella germanica L. (B. g.), was studied by means of the following examinations, namely basophil degranulation (BD) test in rabbits and humans, passive cutaneous anaphylaxis (PCA) reaction in rabbits and rats, and prick test in humans. Also examined was the cross-antigenicity among the crude antigens of cockroaches and house-dust mites. Inhibition effect of several anti-asthmatic drugs on BD test in rabbits and humans was tested additionally. Inoculation of crude B. g. antigen into mice and rabbits produced specific IgE antibodies detectable by BD test and PCA reaction. Although the cross-antigenicities were seen among several kinds of cockroach antigens including the whole body antigens from B. g., Periplaneta americana, and P. fuliginosa, and from the feces and saliva of B. g., none of these cockroach antigens cross-reacted with the antigen from the housedust mite, Dermatophagoides farinae. Of the six fractions collected from the crude B. g. antigen through Sephadex G-100 column, F-2,with molecular weight of 25,000-45,000,showed the maximum activity in BD test in rabbits in IgE production in mice, and in the prick tests in humans who suffered from asthma. The effect of ca. 50% inhibition on BD in rabbits and humans was seen in aminophylline and ketotifen treatment each at (10)^<-3>M concentration. From these results, the BD test in rabbits proved to be one of the reliable bioassay methods applicable to the screening of anti-allergic agents.
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  • Surveys of tabanid flies in the early stage of the dry season in Nigeria
    Hirofumi HAYAKAWA, Mamoru WATANABE, Hirosi TAKAHASI
    Article type: Article
    1989 Volume 40 Issue 2 Pages 117-122
    Published: June 15, 1989
    Released on J-STAGE: August 26, 2016
    DOIhttps://doi.org/10.7601/mez.40.117
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    At the Jos Plateau in Nigeria 11 species of tabanid flies belonging to 6 genera were recorded by collecting adults and larvae. Haematopota pallidipennis and Chrysops distinctipennis were dominant at the early stage of the dry season. C. distinctipennis was regarded as a candidate vector of loiasis in the area. Three patterns of daily biting activity were seen in tabanid flies in the rain forest; crepuscular activity in Ha. guineensis, midday activity in Tabanus conformis and T. secedens, and daytime actively in T. besti. Parous rate of the flies was extremely high in C. distinctipennis, Ha. guineensis and Ha. pallidipennis. This result suggests a possibility of autogeny.
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  • A new species of Phumosia from Malaya, Malaysia : Diptera : Calliphoridae
    Hiromu KURAHASHI
    Article type: Article
    1989 Volume 40 Issue 2 Pages 123-126
    Published: June 15, 1989
    Released on J-STAGE: August 26, 2016
    DOIhttps://doi.org/10.7601/mez.40.123
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    Phumosia viridis sp. nov. is described and included in a revised key to the Oriental species of the genus Phumosia Robineau-Desvoidy.
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  • Qualitative and quantitative changes of metabolites in developmental stages of Culex pipiens pallens as demonstrated by proton NMR
    Masakazu TAKAHASHI, Chieko SHUDO, Mitsuo TAKAHASHI, Kazuhiro MATSUSHIT ...
    Article type: Article
    1989 Volume 40 Issue 2 Pages 127-131
    Published: June 15, 1989
    Released on J-STAGE: August 26, 2016
    DOIhttps://doi.org/10.7601/mez.40.127
    JOURNAL FREE ACCESS
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    [in Japanese]
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    Article type: Article
    1989 Volume 40 Issue 2 Pages 132-
    Published: June 15, 1989
    Released on J-STAGE: August 26, 2016
    DOIhttps://doi.org/10.7601/mez.40.132
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    Article type: Article
    1989 Volume 40 Issue 2 Pages 144-
    Published: June 15, 1989
    Released on J-STAGE: August 26, 2016
    DOIhttps://doi.org/10.7601/mez.40.144
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    Article type: Cover
    1989 Volume 40 Issue 2 Pages Cover8-
    Published: June 15, 1989
    Released on J-STAGE: August 26, 2016
    DOIhttps://doi.org/10.7601/mez.40.Cover8
    JOURNAL FREE ACCESS
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