All issues
Volume 38 (1987)
- Issue 4 Pages 1-
- Issue 3 Pages 169-
- Issue 2 Pages 65-
- Issue 1 Pages 1-
Volume 38, Issue 2
Displaying 1-8 of 8 articles from this issue
- |<
- <
- 1
- >
- >|
-
Article type: Cover
1987 Volume 38 Issue 2 Pages Cover6-
Published: June 15, 1987
Released on J-STAGE: August 31, 2016
JOURNAL FREE ACCESSDownload PDF (43K) -
Takashi ISHII, Masaharu KAMEI, Shuya SHIMADA, Shoji ASANOArticle type: Article
1987 Volume 38 Issue 2 Pages 65-75
Published: June 15, 1987
Released on J-STAGE: August 31, 2016
JOURNAL FREE ACCESSThe efficacy of Altosid^[○!R]10F (A 10 F; a slow release formulation containing 10% methoprene) was tested against Culex pipiens pallens larvae and pupae living in four highly polluted ditches in Tokushima. Diluted A 10 F was sprayed on the water surface so that the concentration of methoprene was 0.86-2.27ppm to standing water or 0.34-0.71g/m^2 to the area of water surface. The control effect was evaluated by measuring the corrected emergence inhibition rate (CEIR). The effect of methoprene appeared in pupae and 4th instar larvae collected 0.5hr after spraying and CEIR reached 96-100% in the pupae collected after 24hr. The larvae were immersed in sprayed ditches for 2hr. The adults from those larvae were divided into three groups by the time of their emergence; 0-3,3-13,and 13-24hr. The 3-13hr group was most sensitive to A 10 F. When sprayed into gently flowing ditches, methoprene's relative concentration measured by CEIR of immersed larvae remained higher in the margins than at the center of ditch. The CEIRs at three sprayed ditches remained at 82-100% for one week after the first spray. Following the second spray application carried out one week after the first, the CEIRs remained at 81 and 100% for 9 days at Jonan and Tomitabashi, and 88-100% for 16 days at Okinohama I, and sectors of the ditch downstream from the experimental one also showed reduction in mosquito emergence due to A 10 F. The period showing more than 70% CEIR was 10 days after the second spray application at Jonan-1 (78m downstream), 11 days at Jonan-2 (112m downstream), 10 days at Jonan-3 (153m downstream) and 11 days at Jonan-4 (191m downstream). High CEIRs persisted for 16 days after the second spray application at Okinohama-1 (84m and 37m downstream from the application sites). A similar high level was registered on day 54.View full abstractDownload PDF (1103K) -
Katsumi SAITO, Akihiro KANAYAMAArticle type: Article
1987 Volume 38 Issue 2 Pages 77-84
Published: June 15, 1987
Released on J-STAGE: August 31, 2016
JOURNAL FREE ACCESSThe fauna and distributions of blackflies in Ibaraki Prefecture were investigated by collecting larvae, pupae and adults at 74 sites in spring of 1985. A total of 4,214 larvae (86.0%), 594 pupae (12.1%) and 91 adults (1.9%) belonging to two genera and eighteen species was collected at fifty-eight sites, of which Prosimulium (Prosimulium) yezoense, Simulium (Gomphostilbia) ogatai and S. (Boophthora) yonagoense were newly recorded from the Ibaraki Prefecture. Predominant species was S. (Eusimulium) uchidai (37.8%), followed by S. (Odagmia) bidentatum (15.4%), S. (Simulium) arakawae (13.0%), S. (O.) aokii (12.3%) and S. (E.) konoi (9.7%). The most widely distributed species was S. (E.) uchidai (81.0%), followed by S. (O.) aokii, S. (E.) subcostatum, S. (S.) arakawae, S. (O.) bidentatum and S. (S.) japonicum.View full abstractDownload PDF (707K) -
Shigeru KIKUCHI, Yoshiteru OKUYAMAArticle type: Article
1987 Volume 38 Issue 2 Pages 85-91
Published: June 15, 1987
Released on J-STAGE: August 31, 2016
JOURNAL FREE ACCESSA northern fur seal, Callorhinus ursinus, captured off the coast of Hanasaki, Hokkaido died in the Marine Aquarium in January, 1980. A total of 283 mature and immature mites were collected from the nasal cavity. Mature mites are elongated in the posterior part of body to form a club-shape with the rounded posterior extremity. Ten to 12 transverse rows of 8 to 12 sharp denticules each and a few rows of minute spines are present on the ventral surface of the capitulum and the posterior surface of coxa III, respectively. From these morphological characteristics the present specimens were identified as Orthohalarachne attenuata (Banks, 1910). Pathological changes in the affected sites by the mites were the marked abrasion of the mucosa and the destruction and necrosis of the deeply placed tissues by the action of the legs, palps and chelicerae of the mites.View full abstractDownload PDF (1353K) -
Chobei IMAI, Hisao YAMUGI, Willem PANJAITANArticle type: Article
1987 Volume 38 Issue 2 Pages 93-102
Published: June 15, 1987
Released on J-STAGE: August 31, 2016
JOURNAL FREE ACCESSLaboratory and field evaluation of larvicides was carried out against Anopheles sundaicus in a coastal village of North Sumatra, Indonesia in 1984 and 1985. The 4th instar larvae were highly susceptible to methoprene (IC_<50>=0.00009ppm), and susceptible to temephos (LC_<50>=0.0032ppm) and chlorpyrifos-methyl (LC_<50>=0.0037ppm). However, they seemed to be a little tolerant to fenitrothion (LC_<50>=0.015ppm) and fenthion (LC_<50>=0.025ppm). Temephos 5% wp was effective to suppress larval densities almost completely for at least 9 days at a target concentration of 1ppm. Practical efficacy of this chemical was considered to remain for at least 2 weeks, taking the developmental period of the immatures into account. Chlorpyrifos-methyl 5% wp was effective to control larval densities almost completely for 7 days, and fenitrothion 50% EC was effective for less than 5 days after 1ppm field application. Field application of methoprene 10% flowable formulation (Altosid 10F) attained more than 90% emergence inhibition against the immatures for 2 weeks in artificial ditch type ponds at 1ppm target concentration, and 100% inhibition for 4 weeks in a natural flood field at 0.062g a.j./m^2 dose.View full abstractDownload PDF (865K) -
M. A. Jabbar KHAN, Raana Jabbar KHANArticle type: Article
1987 Volume 38 Issue 2 Pages 103-105
Published: June 15, 1987
Released on J-STAGE: August 31, 2016
JOURNAL FREE ACCESSA case of hematoma of scalp in a 9-year-old female baby caused by Lucilia sericata (Meigen) was recorded in August 1985. This case is the first verified record of myiasis produced by L. sericata from Pakistan. The salient morphological features of third instar larvae can easily be distinguished from those of other bottle flies.View full abstractDownload PDF (292K) -
Hirofumi HAYAKAWAArticle type: Article
1987 Volume 38 Issue 2 Pages 107-109
Published: June 15, 1987
Released on J-STAGE: August 31, 2016
JOURNAL FREE ACCESSEgg-batches of Hybomitra montana (Meigen, 1820) were collected from marsh plants at Ajiro Heights of Iwate Prefecture from middle to late August of 1982 and 1983. The batches were found on the underside of leaves of 3 plants, mostly Gentiana triflora, at the average height of 12cm above the ground or the water surface. Those were greyish brown to dark brown in color, and roughly semi-oval in shape with 3 to 4 layers of eggs. Average number of eggs per batch was 206. Only one egg-batch was parasitized by wasps. An ant, Formica sp., was observed preying upon eggs.View full abstractDownload PDF (522K) -
Article type: Cover
1987 Volume 38 Issue 2 Pages Cover8-
Published: June 15, 1987
Released on J-STAGE: August 31, 2016
JOURNAL FREE ACCESSDownload PDF (47K)
- |<
- <
- 1
- >
- >|