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Article type: Cover
2006 Volume 57 Issue 2 Pages
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Article type: Cover
2006 Volume 57 Issue 2 Pages
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Article type: Appendix
2006 Volume 57 Issue 2 Pages
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Article type: Appendix
2006 Volume 57 Issue 2 Pages
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Kazuyoshi FUJIMOTO
Article type: Article
2006 Volume 57 Issue 2 Pages
69-74
Published: June 15, 2006
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In order to clarify the seasons of the alternation of the new and old generations, the seasonal activities of Haemaphysalis flava nymphs, which were collected monthly from the field, were observed in plastic cylinders placed outdoors. The activities of the field-collected nymphs in May 2004, March and April 2005 were high until June after they were introduced into the plastic cylinders. However, the activities decreased in July and were scarcely observed in August. The activity of the field-collected nymphs in June 2004 was observed until December after introduction, but there were few active nymphs. The activities of the field-collected nymphs in July and August were high until October or November after introduction. Furthermore, active nymphs were observed even in the following spring, although these were few. The activity of the field-collected nymphs in September was similar to those of the nymphs in July and August. The activities of the field-collected nymphs in October and November were high until the following spring (May) after introduction, although the nymphs temporarily decreased their activity in January. The activities of the field-collected nymphs in December, January, and February were similar to those of the nymphs in the autumn (October and November). These results suggest that the participation of the new generation of H. flava nymphs occurs in two seasons; summer and autumn. The new generations in summer and autumn probably begin to climb floor vegetation in June and October, respectively, and all die in June and August/September of the next year.
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Yoshio TSUDA, Yukiko HIGA, Hiromu KURAHASHI, Toshihiko HAYASHI, Keita ...
Article type: Article
2006 Volume 57 Issue 2 Pages
75-82
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Mosquitoes were collected by using dry-ice traps at urban areas surrounding Tokyo, Japan, in 2003 and 2004. Twelve and 18 collection sites were selected beside human houses in 2003 and 2004, respectively, and a battery-operated suction trap with 1kg of dry-ice was operated weekly for 24hr. A total of 6 mosquito species were collected, and among them the Culex pipiens group and Aedes albopictus were the dominant species in the study areas. The average number of collected females /trap/day for Cx. pipiens gr. and Ae. albopictus was 7.4 and 1.8 in 2003, and 9.4 and 2.0 in 2004, respectively. A large variation in the number of the collected mosquitoes was found among the collection sites. Aedes albopictus was collected from May to October, while Cx. pipiens gr. was found from April to December. To distinguish females of Cx. pipiens pallens and autogenous Cx. pipiens pipiens, the ommatidial number of the collected females was examined, and autogenous Cx. pipiens pipiens was found from all the collection sites. Culex pipiens pallens, autogenous Cx. pipiens pipiens and Ae. albopictus were considered to be potential vectors of the West Nile virus at urban areas surrounding Tokyo, Japan.
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Hiroyuki TAKAOKA, Wej CHOOCHOTE
Article type: Article
2006 Volume 57 Issue 2 Pages
83-92
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Simulium (Nevermannia) fangense sp. nov. is described based on the female, male, pupal and larval specimens collected from northern Thailand. This species is assigned to the feuerborni species-group of the subgenus Nevermannia, and is very similar to S. (N.) sasai (Rubtsov), but is distinguished by the medium brown scutum of the female with three longitudinal vittae, and the greater number of secondary lobules of the rectal organ in the larva.
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Yukiko HIGA, Keita HOSHINO, Yoshio TSUDA, Mutsuo KOBAYASHI
Article type: Article
2006 Volume 57 Issue 2 Pages
93-98
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Host-seeking mosquitoes were collected by CDC-type traps enhanced with 1kg of dry-ice and human bait collection in August 2003 and August 2004 at 6 localities along the coastal region of the eastern part of Hokkaido, Japan. A total of 10 species in 5 genera was encountered, and Culex pipiens s.l. and subarctic aedine mosquitoes were abundant. The mosquito fauna was compared between localities and among collection sites with different vegetation type. The species composition of mosquito samples differed greatly between localities. There was a clear relationship between species composition and vegetation type in Kushiro, suggesting a species-specific habitat selection among the 4 dominant species; Cx. pipiens s. l., Aedes esoensis, Culiseta nipponica and Ae. yamadai. The potential vectors of the West Nile virus in the eastern part of Hokkaido, Japan, were discussed based on the results of our mosquito collections.
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Hiroyuki TAKAOKA
Article type: Article
2006 Volume 57 Issue 2 Pages
99-103
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Simulium (Simulium) arboreum sp. nov. is described based on the female reared from a pupa collected from Luzon Island, Philippines. This new species is characterized by the pupal gill with an arborescent type of 38 slender filaments, a character never found in the subgenus Simulium s. str. in the Oriental Region.
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Si-Woo LEE, Minoru MIHARA, Takashi TOMITA, Shinji KASAI
Article type: Article
2006 Volume 57 Issue 2 Pages
105-110
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Stability of nucleic acids in the body louse preserved under several conditions was investigated in order to explore the ideal stock method of the human louse for molecular diagnosis. The partial DNA sequence of the para-orthologous sodium channel, which is the target site of pyrethroid insecticide, was amplified by utilizing the polymerase chain reaction (PCR) and the stability of genomic DNA and poly (A)^+ RNA in dead insects was evaluated. Overall, poly (A)^+ RNA was less stable than the genomic DNA even if lice were stored in 70% or in absolute ethanol. Stability of genomic DNA lasted for at least two months when the lice were fixed in 99.5% ethanol or even in the lice which died of starvation at room temperature without any treatment. On the contrary, apparent degradation of genomic DNA and poly(A)^+ RNA was observed for lice, which were killed with vapor of diethyl ether, suggesting that the moisture or blood in the body of louse needs to be dried out or digested naturally before storing insects for molecular analysis.
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Satoshi SHINONAGA
Article type: Article
2006 Volume 57 Issue 2 Pages
111-113
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Two new Hydrotaea-species, H. iwasai sp. nov. and H. lalashanensis sp. nov., are described and figured from Taiwan.
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Hiroyuki TAKAOKA, Wej CHOOCHOTE
Article type: Article
2006 Volume 57 Issue 2 Pages
115-124
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A new simuliid species, Simulium (Simulium) visuti sp. nov., is described on the basis of the females, males, pupae and mature larvae collected from northern Thailand. This new species is assigned to the griseifrons species-group of the subgenus Simulium (Simulium), and is characterized by the haired basal portion of the radial vein of the wings not only in the female but also in the male adults. Morphological characteristics differing from those of four related known species are noted.
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Koichiro KAWAI, Yosuke ADACHI, Hiromichi IMABAYASHI
Article type: Article
2006 Volume 57 Issue 2 Pages
125-129
Published: June 15, 2006
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The survival, development, emergence and effect on water quality of the common Japanese chironomid, Chironomus yoshimatsui, were examined under different combinations of food dose and larval density in a container (φ15×H 9cm). Emergence rate was higher than 80% in a combination of 5g dose and 100 ind. density. Mean adult weight was about 0.7mg or higher than 0.7mg in 10g dose. Total survival rate was higher than 50% in the combinations of 2.5g and 100 ind. and 5g and 100 or 200 ind. Reduction in PO_4-P concentration of the rearing water was higher than 20% in the combinations of 2.5g and 100 ind. and 5g and 200 ind. About 50% or higher than 50% of reduction in protein concentration was obtained at 5 or 10g dose. The results suggest that there is a possibility of improving water quality by cultivating this species in waste water.
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Hiroto NAKAYAMA
Article type: Article
2006 Volume 57 Issue 2 Pages
131-134
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Plethysmochaeta nobilis hitherto known from Java was discovered in Fukuoka and Tokorozawa, Japan. Morphological characters of the specimens obtained in Japan are briefly described, and a key to morphologically similar phorid species in the lowland of Japan is given. In Fukuoka, P. nobilis was caught by sweeping at a park where thousands of crows gathered and the ground was covered with their droppings. In Tokorozawa, it was collected by traps baited with decaying meat. The genus Plethysmochaeta is saprophagous in the larval stage and has been known from Africa and Southeast Asia. It is possible that P. nobilis was transported to Japan by human activity, judging from its food preference and known locality of the genus. It is also possible that P. nobilis is native to Japan at least in the southern region, and the lack of its distribution record in the past is due to limited investigation on the phorids in Japan.
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Yukiko HIGA, Takako TOMA, Ichiro MIYAGI
Article type: Article
2006 Volume 57 Issue 2 Pages
135-137
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Due to completion of taxonomical descriptions of mosquitoes in the Ryukyu Archipelago, type specimens of Topomyia yanbarensis Miyagi and 3 endemic species, Aedes daitensis Miyagi et Toma, Toxorhynchites okinawensis Miyagi, Toma et Tanaka and Ficalbia ichiromiyagii Toma et Higa, were properly deposited in the National Science Museum, Tokyo and the Entomological Institute of Hokkaido University in 2005. Deposition lists of type specimens of the 4 species are shown in this paper.
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Yuichi CHIGUSA, Koshi KAWAKAMI, Mizuho SHIMADA, Hiromu KURAHASHI, Haji ...
Article type: Article
2006 Volume 57 Issue 2 Pages
139-143
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A 74-year-old woman, who has been suffering from type II diabetes with insulin therapy, was found infested with around 5mm-long maggots in her oral cavity in a general hospital in Shimane Prefecture, Japan. The maggots were identified as Boettcherisca septentrionalis Rohdendorf, 1937 from their morphological characteristics of the emerged adult fly. This is the first myiasis case caused by B. septentrionalis. She also had a past history of myocardial infarction and cerebral infarction. She underwent left femoral amputation due to left femoral artery embolism. The present case revealed that the patient had many predisposing factors for acquiring myiasis.
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Article type: Bibliography
2006 Volume 57 Issue 2 Pages
145-147
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Article type: Appendix
2006 Volume 57 Issue 2 Pages
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Article type: Appendix
2006 Volume 57 Issue 2 Pages
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K. Fujisaki
Article type: Article
2006 Volume 57 Issue 2 Pages
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Y. T. Huang, H. Sasaki, S. Shinonaga
Article type: Article
2006 Volume 57 Issue 2 Pages
151-
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T. Maruo, M. Ueda, M. Iwasa
Article type: Article
2006 Volume 57 Issue 2 Pages
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M. Uno, M. Aoki, T. Tsuzimoto, T. Itagaki, M. Iwasa, T. Hasegawa
Article type: Article
2006 Volume 57 Issue 2 Pages
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K. Takahashi
Article type: Article
2006 Volume 57 Issue 2 Pages
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S. Aoyama
Article type: Article
2006 Volume 57 Issue 2 Pages
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S. Suda, D. Endo, Y. Osa, M. Asaakwa
Article type: Article
2006 Volume 57 Issue 2 Pages
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S. Fukumoto, R. Mochizuki, H. Arakaki, H. Ueno, T. Sugiura, T. Inoue, ...
Article type: Article
2006 Volume 57 Issue 2 Pages
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Article type: Appendix
2006 Volume 57 Issue 2 Pages
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Article type: Appendix
2006 Volume 57 Issue 2 Pages
154-155
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Koichi Murata
Article type: Article
2006 Volume 57 Issue 2 Pages
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Y Chigusa, M. Hitosugi, A Kurosu, M. Kido, H. Kurahashi, T. Hayashi, T ...
Article type: Article
2006 Volume 57 Issue 2 Pages
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Y. Chigusa, S. Shinonaga, M. Kirinoki, H. Matsuda
Article type: Article
2006 Volume 57 Issue 2 Pages
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Atsuko Moribayashi, Kyoko Sawabe, Yoshio Tsuda, Hiromu Kurahashi
Article type: Article
2006 Volume 57 Issue 2 Pages
157-
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T. Hashimoto, A. Yoshikawa, M. Motoki, K. Sasaki, A. Muto
Article type: Article
2006 Volume 57 Issue 2 Pages
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K. Fujimoto
Article type: Article
2006 Volume 57 Issue 2 Pages
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Y. Higa, Y. Tsuda, I. Miyagi, T. Toma
Article type: Article
2006 Volume 57 Issue 2 Pages
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K. Hoshino, H. Isawa, T. Sasaki, K. Sawabe
Article type: Article
2006 Volume 57 Issue 2 Pages
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K. Sawabe, Y. Higa, Y. Tsuda, S. Kasai, H. Isawa, K. Murata, Y. Sato, ...
Article type: Article
2006 Volume 57 Issue 2 Pages
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K. Nomoto, K. Urabe
Article type: Article
2006 Volume 57 Issue 2 Pages
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Y. Shirai
Article type: Article
2006 Volume 57 Issue 2 Pages
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K. Nakano
Article type: Article
2006 Volume 57 Issue 2 Pages
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K. Hata, T. Kurihara
Article type: Article
2006 Volume 57 Issue 2 Pages
159-
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Goro Shinjo, Kiyosi Mizutani, Minoru Mihara
Article type: Article
2006 Volume 57 Issue 2 Pages
159-
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T. Tanikawa, T. Harunari, K. Nagaoka
Article type: Article
2006 Volume 57 Issue 2 Pages
159-
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Article type: Appendix
2006 Volume 57 Issue 2 Pages
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Article type: Appendix
2006 Volume 57 Issue 2 Pages
162-163
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Takao Saruta
Article type: Article
2006 Volume 57 Issue 2 Pages
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H. Hirai
Article type: Article
2006 Volume 57 Issue 2 Pages
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T. Shiota, T. Saito
Article type: Article
2006 Volume 57 Issue 2 Pages
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M. Natsuaki
Article type: Article
2006 Volume 57 Issue 2 Pages
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