Medical Entomology and Zoology
Online ISSN : 2185-5609
Print ISSN : 0424-7086
ISSN-L : 0424-7086
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Volume 67, Issue 1
Displaying 1-12 of 12 articles from this issue
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Original Articles
  • A nationwide survey on distribution of mosquitoes in Japan
    Yoshihide Maekawa, Yoshio Tsuda, Kyoko Sawabe
    2016 Volume 67 Issue 1 Pages 1-12
    Published: March 25, 2016
    Released on J-STAGE: September 25, 2016
    DOIhttps://doi.org/10.7601/mez.67.1
    JOURNAL FREE ACCESS
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    A nationwide survey of mosquito distribution in Japan was carried out in 2013 and 2014, in order to determine the current distribution of vector mosquitoes. Forty-two study sites located either in coastal or inland areas were selected from Hokkaido to Kyushu, and mosquitos were collected using CDC-like traps with 1 kg of dry ice (dry ice traps), a sweeping net and a dipper for collecting larvae. Ten dry ice traps were operated at each study site for 3 or 4 days. Larvae were collected from various bodies of water and carried to the laboratory, where they were reared until adult for species identification. The locations of the trap and larval collection sites were recorded using GPS. A total of 16,608 mosquitoes of 44 species and 11 genera were collected in this study. Adult density ranged between 0.002 and 16.51 adults/trap night among the 34 species collected by the dry ice traps. The geographical and altitudinal distributions of the mosquito species were compared. Culex tritaeniorhynchus, Cx. pipiens group, Aedes albopictus, and Cx. orientalis were distributed widely and with a relatively high density of >2 adults/trap night, suggesting that these species are of high medical importance. In Hokkaido Ae. excrucians, Culiseta nipponica, and Ae. punctor/communis were collected at relatively high densities ranging between 0.51 and 1.98 adults/trap night, and are thus considered a locally abundant species.
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  • Indoor mass occurrence of Oecia oecophila (Staudinger) at a food manufacturing facility in Japan: the seasonal change in abundance and the source of occurrence
    Yasuhiro Tomioka, Kazuki Hirota, Tsutomu Tanikawa, Yoshitsugu Nasu
    2016 Volume 67 Issue 1 Pages 13-16
    Published: March 25, 2016
    Released on J-STAGE: September 25, 2016
    DOIhttps://doi.org/10.7601/mez.67.13
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    In 2014 and 2015, mass occurrence of Oecia oecophila was observed in a food factory in central Tokyo, Japan. The external morphology and male and female genitalia were described. Adults started appearing in April, peaked in May, and disappeared in November. Feces of rats were considered to be the source of the mass occurrence of O. oecophila.
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  • Six new species of the genus Xenotachina Malloch from Japan, with known species X. tsushimensis Shinonaga (Diptera, Eginiinae, Muscidae)
    Satoshi Shinonaga, Motoki Sagara
    2016 Volume 67 Issue 1 Pages 17-27
    Published: March 25, 2016
    Released on J-STAGE: September 25, 2016
    DOIhttps://doi.org/10.7601/mez.67.17
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    Six new species from Japan belonging to the genus Xenotachina are described and illustrated. The new species include the followings: Xenotachina longicornis n. sp., X. albicorpus n. sp., X. surugaensis n. sp., X. awaensis n. sp., X. nigrithorax n. sp. and X. montana n. sp.
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Short Communications
Special Issue: Autochthonous dengue outbreak in Japan after a blank of approximately 70 years (continuedfrom Vol. 66 No.4)
Mini Review
Special Issue:
Original Articles
  • A comparison of predacious aquatic insect fauna and density in ground pools and concrete pools created during the Great East Japan Earthquake in 2011
    Shin-ya Ohba, Yoshio Tsuda
    2016 Volume 67 Issue 1 Pages 45-50
    Published: March 25, 2016
    Released on J-STAGE: September 25, 2016
    DOIhttps://doi.org/10.7601/mez.67.45
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    The tsunami caused by the Great East Japan Earthquake on March 11, 2011 hit the Pacific coast and caused heavy destruction of natural and man-made environments in north-eastern Japan. This study focuses on mosquito larvae and their potential aquatic insect predators associated with ground pools and pools that appeared in the concrete foundations of destroyed houses (concrete pool) in inundated areas in Miyagi Prefecture, Japan. Field samplings were conducted on late July 2013. Culex inatomii, Cx. pipiens group, Cx. tritaeniorhynchus, and Cx. orientalis were collected from ground pools and concrete pools. The abundance of Cx. inatomii and Cx. pipiens groups in concrete pools was significantly greater than that in the ground pools. A large number of Hydroglyphus japonicus were collected as potential mosquito predators, followed by Micronecta spp., Enochrus japonicus, Rhantus sturalis, Aquarius paludm paludum and Hydrochara affinis, categorized as “flight dispersers,” which might immigrate rapidly from the non-inundated rice fields or wetlands. Stepwise generalized linear models suggested that larval abundance of Cx. inatomii in the pools studied was affected by the vegetation cover and habitat type (ground pool or concrete pool), but not by water depth, salinity, presence of predators, and bottom type (sand or concrete) of aquatic bodies. Concrete pools and covered with dense vegetation provide breeding habitat for Cx. inatomii along with their potential predators.
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  • Annual changes in distribution and abundance of mosquitoes in rice field areas in southern Miyagi and Fukushima Prefectures, Japan, during the four years after the Great East Japan Earthquake of 2011
    Yoshio Tsuda, Keiichi Ishida, Shigeru Yamanouchi, Kenichi Uchida, Jun ...
    2016 Volume 67 Issue 1 Pages 51-60
    Published: March 25, 2016
    Released on J-STAGE: September 25, 2016
    DOIhttps://doi.org/10.7601/mez.67.51
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    Annual changes in the distribution and abundance of mosquitoes were studied in rice field areas of southern Miyagi and Minamisouma in Fukushima, Japan, where urban and rural environments were destroyed by the Tsunami caused by the Great East Japan Earthquake in 2011. A total of 16 species and species groups of mosquitoes were collected by dry-ice traps from 2011 to 2014, with the dominant species being the Culex pipiens group, Cx. inatomii, Cx. tritaeniorhynchus, and Aedes albopictus. The mean density of the adults of the dominant species in July and August was calculated for each year, and was higher in the “Tsunami” area than the “No-Tsunami” area, except for Ae. albopictus, and the area difference became smaller year by year in southern Miyagi. A clear relationship was observed between distance from the coast and the density of Cx. inatomii females in southern Miyagi in 2011 and 2014, indicating the presence of suitable larval habitats along the coast. There was no relationship between distance from the coast and female density of the Cx. pipiens group in 2014. The percentage of ground pools containing mosquito larvae was higher in the “Tsunami” area than the “No-Tsunami” area in southern Miyagi, whereas the opposite result was observed in Minamisouma in Fukushima.
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  • Chironomid fauna in Tsunami disaster areas of the Great East Japan Earthquake —Focus on the suburban Sendai area in Miyagi Prefecture and Minami-Souma area in Fukushima Prefecture, Japan in 2013
    Kimio Hirabayashi, Masaru Yamamoto, Yoshio Tsuda, Kenzi Takamura, Nats ...
    2016 Volume 67 Issue 1 Pages 61-65
    Published: March 25, 2016
    Released on J-STAGE: September 25, 2016
    DOIhttps://doi.org/10.7601/mez.67.61
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    The aftereffects of the Tsunami on the chironomid fauna were studied in the suburban Sendai area in Miyagi Prefecture and Minami-Souma area in Fukushima Prefecture, Japan during June 4–6 in 2013. A total of 31 individuals of 7 species were collected at 13 sampling stations. At the suburban Sendai area, we could mainly collect the larvae of Chironomus biwaprimus in small swamps. Moreover, Pseudosmittia sp. which is semi-terrestrial species, and Polypedilum nubifer were also collected there. The larvae of Chironomus salinarius inhabit halophytic swamps or small water bodies formed in grassy areas affected by the seawater in both investigated areas. Almost all chironomid species larvae collected in this study were preferred sandy mud conditions. Especially, C. salinarius may be regarded of a wide range of saline conditions. C. salinarius larval brackish and sandy mud habitat had expanded in that area two year after the Tsunami.
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Japanese summaries of papers written in English in this issue
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