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Volume 46 (1995)
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Volume 46, Issue 3
Displaying 1-16 of 16 articles from this issue
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Article type: Cover
1995 Volume 46 Issue 3 Pages Cover10-
Published: September 15, 1995
Released on J-STAGE: August 23, 2016
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Zohair H. MOHSEN, May AL SAADYArticle type: Article
1995 Volume 46 Issue 3 Pages 219-222
Published: September 15, 1995
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSLaboratory experiments were conducted to examine the effects of intra- and interspecific competition on the survival and development of larvae of Culex quinquefasciatus Say and Culex pipiens molestus Forskal. The survival of both mosquito species decreased substantially when reared at the density of 1 larva/ml of water than at the density of 1 larva/8ml. The larval and pupal periods were also substantially longer at the density of 1 larva/ml than at the density of 1 larva/8ml. The rearing of the 2 mosquito species together at different combination ratios (300 : 100,200 : 200 and 100 : 300) revealed that Cx. quinquefasciatus was a superior competitor than Cx. p. molestus as indicated by the difference between expected and realized ratios of the emerging adults.View full abstractDownload PDF (401K) -
Masahiro TAKAGI, Yoshio TSUDA, Yoshito WADAArticle type: Article
1995 Volume 46 Issue 3 Pages 223-228
Published: September 15, 1995
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSA mark-release-recapture experiment of Aedes albopictus was carried out in Nagasaki, Japan. A total of 1,478 unfed females of 4-5 days after emergence was sprayed with 0.5% water solution of Rhodamine B and released into an isolated, small, grassy and scrub area. Human bait collections were made for 9 days at 10 fixed collection points to observe the temporal and spatial variations of released females. A total of 348 females was recaptured and the recapture rate was 23.55%. The variations in the number of marked females among 10 collection points were analyzed by multiple log-regression analysis using the number of unmarked females in each collection point and the distance from the release point as independent variables. The relative importance of the distance in explaining the number of marked females at each collection point was the highest just after the release and then became lower according to days post-release, whereas the relative importance of the number of unmarked females became higher with increasing days post-release. The probability of surviving and staying in the release point and in the study area was estimated as 0.299 and 0.429,respectively, by log-regression analysis of the temporal changes in the number of recaptured females.View full abstractDownload PDF (562K) -
Toshihiko HAYASHIArticle type: Article
1995 Volume 46 Issue 3 Pages 229-233
Published: September 15, 1995
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSTwo lesser dung fly species, Coproica rohaceki Carles-Tolra and C. rufifrons Hayashi, are recorded from Japan for the first time. A key is provided with ten Japanese species of the genus Coproica.View full abstractDownload PDF (391K) -
[in Japanese]Article type: Article
1995 Volume 46 Issue 3 Pages 234-
Published: September 15, 1995
Released on J-STAGE: August 23, 2016
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Upik Kesumawati HADI, Hiroyuki TAKAOKA, Chiharu AOKIArticle type: Article
1995 Volume 46 Issue 3 Pages 235-239
Published: September 15, 1995
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSLarval salivary gland chromosomes of the blackfly, Simulium (Gomphostilbia) yaeyamaense Takaoka, 1991,from the Yaeyama Island group of the Ryukyu archipelago, were observed and mapped. This species had three pairs of polytene chromosomes. The longest pair, chromosome I, is metacentric and the two shorter pairs, chromosomes II and III, in descending order of length, are submetacentric. The centromeric region of all chromosomes was not expanded and barely recognized by the existence of a heavy band. The nucleolar organizer was situated in section 18 of chromosome I. The Balbiani ring, double bubble and the Parabalbiani ring were situated in sections 47,46 and 61 of chromosome II, respectively. From three populations examined, one inversion (IIIL-1) was always heterozygous in females, and four other inversions (IIIL-2,IIIL-3,IIIL-4 and IIIL-5), were polymorphic and found as heterozygote in both sexes. This study is the first to map the larval salivary gland chromosomes of the subgenus Gomphostilbia, and to record the heterozygous inversion related to the female sex among the Oriental Simuliidae.View full abstractDownload PDF (564K) -
Minoru NAKAOArticle type: Article
1995 Volume 46 Issue 3 Pages 241-247
Published: September 15, 1995
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSThe ixodid tick, Ixodes persulcatus, is a principal vector for the Lyme disease spirochete, Borrelia burgdorferi sensu Iato. To examine whether the infection affects the tick development, the amount of oviposited eggs, hatchability, molting rate from larvae to nymphs, and body sizes of nymphs and adults were compared between the infected and noninfected groups. No remarkable differences were observed in these parameters. Comparison was also made on the blood-feeding activity. The infected nymphs showed the same activity as the noninfected ones. These results suggest that the spirochete may act as a commensal in the tick host.View full abstractDownload PDF (685K) -
Tsunemaru OKADOMEArticle type: Article
1995 Volume 46 Issue 3 Pages 249-254
Published: September 15, 1995
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSDiurnal and seasonal fluctuations of a heleomyzid fly, Tephrochlamys japonica, were surveyed at three points : a pig pen, poultry house and cattle shed, of the Faculty of Agriculture, Meijo University Farm, at Kasugai, near Nagoya, in central Japan. The total specimens were collected by fly-paper strips, light traps, and on glass windows. According to observation of the diurnal activity of this species, it was found to have two peaks, one in the morning (7 : 00-10 : 00) and the other in the afternoon (16 : 00-19 : 00). The largest numbers of flies were trapped in the temperature range of 21 to 25℃ and under illumination of 1,000 to 3,000lx, during the day. Seasonal prevalence of T. japonica in central Japan showed two peaks, the first in April and the second, the following January.View full abstractDownload PDF (570K) -
Manabu SASA, Hiroshi SUZUKIArticle type: Article
1995 Volume 46 Issue 3 Pages 255-288
Published: September 15, 1995
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSCollections of chironomid midges were carried out by H. Suzuki on May 18 to 20,1994,on Kuchinoshima and Nakanoshima of the Tokara Islands, by sweeping bushes near their breeding places (mainly rice paddies and small streams) with insect net during daytime, and also by operating a light trap at night. As the results, a total of 266 males of the family Chironomidae were individually mounted on slides for identification, and they were classified into as many as 49 chironomid species, including 17 new species. Twenty four species among them were in common with those of the mainland of Japan, and 15 were in common with the Nansei Islands; 8 species among them were in common both with the mainland of Japan and the Nansei Islands, but 7 were estimated as being in common with the species indigenous to the Nansei Islands, which invaded the Tokara Islands by crossing the Watase Line. It was also noted that Chironomus yoshimatsui, a species most commonly found in the polluted sewage ditches in the mainland of Japan but not in those of the Nansei Islands, is distributed to Tokara.View full abstractDownload PDF (3654K) -
Kenji TAKAI, Takeo TADANOArticle type: Article
1995 Volume 46 Issue 3 Pages 289-297
Published: September 15, 1995
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSTwenty-nine spontaneous gynandromorphs in the mosquito, Aedes togoi, were analyzed in order to construct an embryonic fate map. The estimated distances on the blastula between primordial discs for the abdomen, genitalia, antenna, palp, and wing showed sufficient consistency to form the map. In Aedes, sex is determined by the sex factors M and m, with males being heterogametic and females homogametic mm. The mechanism by which a gynandromorph is produced in this insect can be ascribed to double fertilization of a binucleate egg by spermatozoa carrying different sex factors. The two nuclei undergo nuclear division and resultant nuclei form two clusters of different sexes and cover the blastoderm surface. Primordial discs are then developed after cell division. Because this process is conceived to be equivalent to that a sexual boundary separates the cells on the blastoderm at random, distances between the primordial discs of structures can be estimated from their segregation ratios of sex in gynandromorphs. The results of the present study are expected to provide a better understanding of how the mosquito gynandromorph is produced.View full abstractDownload PDF (928K) -
Yasumasa TONGUArticle type: Article
1995 Volume 46 Issue 3 Pages 299-300
Published: September 15, 1995
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESS -
Tsutomu TANIKAWAArticle type: Article
1995 Volume 46 Issue 3 Pages 301-303
Published: September 15, 1995
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSThe circadian rhythm of the roof rat, Rattus rattus, had peaks soon after the beginning and before the ending of the dark period. The circadian rhythm was deranged by the 3hr delay of the light off time. The derangement of the circadian rhythm will be useful for controlling the rat infestation.View full abstractDownload PDF (332K) -
Katsumi SAITO, Akihiro KANAYAMA, Hideki SATO, Kiichi UEMOTOArticle type: Article
1995 Volume 46 Issue 3 Pages 305-312
Published: September 15, 1995
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSThe fauna and distribution of the blackflies in Miyagi Prefecture were investigated from collections of larval and pupal stages of flies from streams and imaginal stages flying around the collectors at 78 localities in the spring of 1986. A total of 9,441 blackflies, 7,928 larvae, 1,464 pupae and 49 adults, was collected at 63 sites. Those blackflies were classified into 3 genera and 23 species. Sixteen species, Prosimulium (Prosimulium) yezoense, P. (P.) jezonicum, Cnephia (Stegopterna) mutata, Simulium (Nevermannia) konoi, S. (N.) subcostatum, S. (N.) uchidai, S. (Gomphostilbia) ogatai, S. (Gom.) shogakii, S. (Gnus) bidentatum, S. (Gnus) malyshevi, S. (Simulium) kawamurae, S. (S.) nikkoense, S. (S.) suzukii, S. (Eusimulium) sp. H., S. (E.) sp. Y. and S. sp. M-1 were newly recorded from Miyagi Prefecture. Predominant species was S. (N.) uchidai (26.8%), followed by S. (O.) aokii (24.8%), S. (S.) japonicum (19.1%) and S. (N.) konoi (7.3%). The most widely distributed species was S. (N.) uchidai (53 sites), followed by S. japonicum (39 sites), S. (O.) aokii (32 sites), S. (N.) konoi (19 sites), S. (S.) rufibasis (19 sites) and P. (P.) yezoense (16 sites).View full abstractDownload PDF (809K) -
Keiji MORI, Takashi TSUNODA, Masato FUJIMAGARIArticle type: Article
1995 Volume 46 Issue 3 Pages 313-316
Published: September 15, 1995
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSIn the southern part of Chiba Prefecture, we collected 24,539 ticks of 2 genera including 6 species on Sika deer Cervus nippon in October, 1990,August, 1993,and February and March, 1994. Haemaphysalis megaspinosa was the dominant species in October (92.9% of male, 89.8% of female, 91.2% of nymph), February (78.5% of male, 65.3% of female, 83.0% of nymph) and March (73.1% of male, 62.9% of female, 48.1% of nymph), but, in August H. longicornis was dominant (97.8% of male, 98.8% of female, 98.4% of nymph). Furthermore, we collected 10,928 ticks on vegetation by the flagging method in the Sika deer habitat on respective months from 1990 to 1994. The dominant species of ticks on Sika deer were approximately similar to the results of the flagging method. But, Ixodes turdus was collected only by the flagging method, and I. ovatus was collected only on deer.View full abstractDownload PDF (489K) -
[in Japanese]Article type: Article
1995 Volume 46 Issue 3 Pages i-
Published: September 15, 1995
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSDownload PDF (214K) -
Article type: Cover
1995 Volume 46 Issue 3 Pages Cover12-
Published: September 15, 1995
Released on J-STAGE: August 23, 2016
JOURNAL FREE ACCESSDownload PDF (73K)
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